Results 1 to 30 of 30

Thread: High Oil Pressure

  1. #1
    Supporting Member Diseazd's Avatar
    Member ID
    CZCC-14126
    Join Date
    Mar 2007
    Location
    Richmond
    Posts
    1,852

    Default High Oil Pressure

    My 71 240Z (L24engine) runs 75 lbs. of oil pressure at 3000 rpm. It's not a defective gauge. What can cause high oil pressure in a Z motor? The engine has 2000 miles on it and runs perfect.
    http://www.flickr.com/photos/1404980...7600346077563/
    ______________________________________________
    http://www.flickr.com/photos/1404980...7603350695459/

    70, 71, 2 72's, and a 73 240z....
    90 300zx and a 1996 Acura NSX.....but who's counting?

  2. #2
    HLS30A 17574 djwarner's Avatar
    Member ID
    CZCC-27817
    Join Date
    Aug 2012
    Location
    Central FLorida
    Posts
    405

    Default

    There is a pressure relief valve in the oil pump itself. Also there is a clogged filter bypass where the filter mounts. Normal operation at 3000 rpm is for the pump to produce excess pressure and the relief valve to bleed this off.
    1971 240Z HLS30A 17574 L24-021025

  3. #3
    Supporting Member Diseazd's Avatar
    Member ID
    CZCC-14126
    Join Date
    Mar 2007
    Location
    Richmond
    Posts
    1,852

    Default

    What would you suggest.....a new oil pump?
    http://www.flickr.com/photos/1404980...7600346077563/
    ______________________________________________
    http://www.flickr.com/photos/1404980...7603350695459/

    70, 71, 2 72's, and a 73 240z....
    90 300zx and a 1996 Acura NSX.....but who's counting?

  4. #4
    Registered User madkaw's Avatar
    Member ID
    CZCC-7622
    Join Date
    Dec 2004
    Location
    bloomington IN
    Age
    57
    Posts
    2,288

    Default

    Will be watching this closely. I have been fighting high oil pressure since day one.
    Nothing wrong with high oil pressure until it starts pushing oil past the rear main seals. I have a constant oil leak that I have pretty much given up on until I solve the high oil pressure issue.

    My best guess at this time is that I have some kind of obstruction in my oil system somewhere that is driving up my pressure. I run a stock pump and have checked for obstructions as far as I can without dismantling the whole motor.


    Isn't the filter bypass working if the pressure does not exceed 75?
    Steve
    71 240z,bw-5sp 2.4-40 over,balanced,e-88,big valves,ported&polished, stage2,header, triple Mikuni's 40's
    3.90 Subaru STI LSD

  5. #5
    Supporting Member Diseazd's Avatar
    Member ID
    CZCC-14126
    Join Date
    Mar 2007
    Location
    Richmond
    Posts
    1,852

    Default

    I too run a stock oil pump.....I changed to a new oil filter (Niisan) after the first 200 miles as always when I build a new motor. The engine has 2000 miles, so if it were tolerance based, you'd think it would have been toast by now. Also, the crank was polished and passed as standard, so I used standard Clevite bearings. I'm very careful to keep things spotless when building my motors. I'm stumped unless the new oil pump is defective.
    http://www.flickr.com/photos/1404980...7600346077563/
    ______________________________________________
    http://www.flickr.com/photos/1404980...7603350695459/

    70, 71, 2 72's, and a 73 240z....
    90 300zx and a 1996 Acura NSX.....but who's counting?

  6. #6
    Registered User madkaw's Avatar
    Member ID
    CZCC-7622
    Join Date
    Dec 2004
    Location
    bloomington IN
    Age
    57
    Posts
    2,288

    Default

    Quote Originally Posted by djwarner View Post
    There is a pressure relief valve in the oil pump itself. Also there is a clogged filter bypass where the filter mounts. Normal operation at 3000 rpm is for the pump to produce excess pressure and the relief valve to bleed this off.
    What are you using for reference for this statement - FSM?

    From all my reading the pressure of a hot engine usually runs approximately 10psi per 1000rpm. The relief valves are just for that- relief of excessive pressure above 70psi. Not to regulate pressure above 3000rpm.
    Steve
    71 240z,bw-5sp 2.4-40 over,balanced,e-88,big valves,ported&polished, stage2,header, triple Mikuni's 40's
    3.90 Subaru STI LSD

  7. #7
    Registered User madkaw's Avatar
    Member ID
    CZCC-7622
    Join Date
    Dec 2004
    Location
    bloomington IN
    Age
    57
    Posts
    2,288

    Default

    Some questions:

    You run a PVC system?
    What head and cam ? Is cam spray oiled or internal?
    Did you enlarge the oil feed port on the block?
    Steve
    71 240z,bw-5sp 2.4-40 over,balanced,e-88,big valves,ported&polished, stage2,header, triple Mikuni's 40's
    3.90 Subaru STI LSD

  8. #8
    HLS30A 17574 djwarner's Avatar
    Member ID
    CZCC-27817
    Join Date
    Aug 2012
    Location
    Central FLorida
    Posts
    405

    Default

    First of all, having too much oil pressure is much less a problem than too little. That said, was the pump replaced, cleaned, or overhauled during the overhaul? Also, what oil viscosity are you using?

    The engine manual states that the relief valve is not adjustable and the only maintenance checks are the free and operating heights of the spring. The plunger on the end of the spring could be hung up. The only other possibility is a partial clog in the relief channel that passes the excess oil back to the inlet side of the pump. In all cases everything is within the pump itself, so short of the pump being mis-assembled, the solution can be had by changing the pump.

    I am assuming that you have independently verified the oil pressure and the oil filter has been recently changed.

    From the engine manual, the relief spring's free and operating heights are 2.24" and 1.54" respectively. The oil pressure at idle is 14.2 to 17.1 psi at idle. And the relief valve should open at 54.0 to 59.7 psi. Relief valves typically open at around 2500 rpm. The pump is a constant displacement style pump ( that is the volume of oil pumped is constant for each revolution ). This means that as the pump spins faster, the greater volume of oil has to pass through the relief channel. As the flow rate increases, the pressure drop in the channel increases. So while the valve may open at 54 psi, the pressure will probably still increase somewhat at higher rpms.

    Please note that the viscosity of the oil will affect how efficiently the excess oil flows through the relief passage. This is why a cold engine generates higher oil pressure. If you are using 20-50 weight oil, I would expect the oil pressure to be higher at the normal 180 degree operating temperature of the engine. ie 40 weight oil at 185 degrees has a viscosity of 19 Centipoises while 50 weight oil is 28 Centipoises.

    So first I would check the oil pressure in a fully warmed engine at 2500 rpm, if it's 60 psi or less, stop worrying.
    1971 240Z HLS30A 17574 L24-021025

  9. #9
    Supporting Member Diseazd's Avatar
    Member ID
    CZCC-14126
    Join Date
    Mar 2007
    Location
    Richmond
    Posts
    1,852

    Default

    I did stop worrying and yesterday, I was trying to quiet what I thought was a squealing fan belt and the engine shut down. It is locked solid and will not budge.....my guess is that the bearings are welded to the crank.....trying to figure out what caused it. Check your filter and oil pump Madkaw.....high oil pressure is not a good thing......I think the squealing was bearings not fan belt.
    http://www.flickr.com/photos/1404980...7600346077563/
    ______________________________________________
    http://www.flickr.com/photos/1404980...7603350695459/

    70, 71, 2 72's, and a 73 240z....
    90 300zx and a 1996 Acura NSX.....but who's counting?

  10. #10
    HLS30A 17574 djwarner's Avatar
    Member ID
    CZCC-27817
    Join Date
    Aug 2012
    Location
    Central FLorida
    Posts
    405

    Default

    Wow, several posts came in while I was typing my last. Sorry to hear about your engine seizure. Sounds like a blocked oil channel deprived oil to the bearings. It's amazing that it took 2000 miles for this to show up.
    1971 240Z HLS30A 17574 L24-021025

  11. #11
    Registered User madkaw's Avatar
    Member ID
    CZCC-7622
    Join Date
    Dec 2004
    Location
    bloomington IN
    Age
    57
    Posts
    2,288

    Default

    Wow- sorry to hear that. Bearing clearances weren't good?

    I have about 14k miles on my engine now and still running strong. My issue must be different. I guess I will have to my engine apart to figure out why.
    Steve
    71 240z,bw-5sp 2.4-40 over,balanced,e-88,big valves,ported&polished, stage2,header, triple Mikuni's 40's
    3.90 Subaru STI LSD

  12. #12
    Supporting Member Diseazd's Avatar
    Member ID
    CZCC-14126
    Join Date
    Mar 2007
    Location
    Richmond
    Posts
    1,852

    Default

    If bearing clearances were too tight, the crank would not have spun so effortlessly when the engine was assembled....standard crank and standard bearings....you wouldn't think too little, you'd guess too much if anything. I use 30 weight oil.......I know nothing about an oil pump, but suspect that.....an oil filter wouldn't be blocked that quickly, especially after changing the first one......I'm stumped.....I'll be pulling the engine when my "pressure" returns to normal....what a bitch!
    http://www.flickr.com/photos/1404980...7600346077563/
    ______________________________________________
    http://www.flickr.com/photos/1404980...7603350695459/

    70, 71, 2 72's, and a 73 240z....
    90 300zx and a 1996 Acura NSX.....but who's counting?

  13. #13
    Rust Free'ish zKars's Avatar
    Member ID
    CZCC-12190
    Join Date
    Jul 2006
    Location
    Calgary, AB Canada
    Posts
    1,256

    Default

    My understanding of oil pressure is that is caused by the balance of two controlling factors. One is the internal relief valve in the oil pump, and the other is main and rod bearing clearance. The pump relief is a spring pressure controlled device that just allows internal bypass at a certain max pressure, but the bearing clearance and pump volume determine the overall pressure over the range of normal operating conditions.

    I can't see one bad bearing causing high pressure. When the pump relief valve sticks, the pressure gauge becomes a tach, ie rpm determines pressure and it can quickly get WAY above 60 at as little as 3k. Doesn't sound like your case.

    Time to take it apart and diagnose. If its one bearing seized and the other have correct clearance and no sign of scoring and starvation, likely just a blocked passage to that bearing and bad luck...
    -----------------------------------------
    Jim
    73 240Z HLS30 149331
    69 510 PL510 77603

    www.zKars.com
    www.calgaryzclub.ca
    Reference materials
    www.xenonS30.com

  14. #14
    Registered User
    Member ID
    CZCC-23125
    Join Date
    Dec 2010
    Location
    Spartanburg, SC
    Age
    50
    Posts
    468

    Default

    I hate that. I have built a number of engines Z's and others. I agree the bearing clearances on a polished crank running standard bearings should be on the loose side not too tight. I am curious to see which bearings or whether it's all of them. Take some pictures of each bearing and keep them in order. I have had motors destroyed like this but from different circumstances. I have one motor I built that has excessive oil pressure that I have yet to identify. I tend to agree that you had a blockage or partial blockage somewhere, junk out of the filter, a piece of gasket or a loose piece of RTV something. If the bearings are evenly worn and cooked It would have to be a serious blockage to blank the whole crank. Remember that you may not be able to remove the bearings from the crank. I had one fail like that too, they were welded on. I really feel for the loss of time, parts and machine work.
    Charles

  15. #15
    Registered User madkaw's Avatar
    Member ID
    CZCC-7622
    Join Date
    Dec 2004
    Location
    bloomington IN
    Age
    57
    Posts
    2,288

    Default

    Did you plastigauge all bearings?
    Steve
    71 240z,bw-5sp 2.4-40 over,balanced,e-88,big valves,ported&polished, stage2,header, triple Mikuni's 40's
    3.90 Subaru STI LSD

  16. #16
    Registered User Lazeum's Avatar
    Member ID
    CZCC-15411
    Join Date
    Nov 2007
    Location
    Paris, France (prev. Troy, Mi)
    Posts
    302

    Default

    I'm sorry also to hear that. Was it on your L28 with L24 crank?
    I'm posting also to follow up on your findings

    Bleed valve from the oil pump should be able to maintain 60psi at 3000rpm but also at 6000rpm. Could too high pressure at 3000rpm be related to by-pass restriction since it should be capable to do the job also at twice the rpm?
    I would suspect something is going on inside the pump. I would also check galleries inside the block between the sender and the pump.

    Regarding crankshaft clearance, too much clearance would make the oil layer to fail withstanding high pressure resulting in metal contact => failure.
    I don't know what are the limits, they might not be that small.
    Bearing failure could also come from clogged galleries inside crankshaft.
    Matt - 72' 240z

  17. #17
    Registered User
    Member ID
    CZCC-23125
    Join Date
    Dec 2010
    Location
    Spartanburg, SC
    Age
    50
    Posts
    468

    Default

    I also second Madkaw's question. I assume you assembled the bottom end did you plasti-gage or mic your clearances?
    C

  18. #18
    Supporting Member Diseazd's Avatar
    Member ID
    CZCC-14126
    Join Date
    Mar 2007
    Location
    Richmond
    Posts
    1,852

    Default

    Lazeum.....No it was the L24 block and crank on the gold 71.....I didn't use plastigage, but every standard on standard I've ever plastigaged has been acceptable, plus the crank spun effortlessly with the mains torqued. Besides, the pressure increased later, if it had been a clearance issue, it should have started from the first start up, but you're correct, it could have been an out of tolerance shell, but I don't think so. I'm bummed and haven't pulled the engine yet, but will keep everyone informed. Luckily, I have the L28 motor with the L24 crank and rods almost finished....it didn't have anywhere to go......now it does.....could be the gods.
    Last edited by Diseazd; 07-28-2013 at 03:41 PM.
    http://www.flickr.com/photos/1404980...7600346077563/
    ______________________________________________
    http://www.flickr.com/photos/1404980...7603350695459/

    70, 71, 2 72's, and a 73 240z....
    90 300zx and a 1996 Acura NSX.....but who's counting?

  19. #19
    Registered User Travel'n Man's Avatar
    Member ID
    CZCC-14147
    Join Date
    Mar 2007
    Location
    Western North Carolina
    Age
    59
    Posts
    1,486

    Default

    Sorry for the bad luck - but the good part is the new engine is going to rock. Let us know about the new configuration with the crank and rods.
    Life's a journey; enjoy the ride!

    Mitchell
    L28 - N42 Block w/Flat tops - N42 Rebello Head & Cam - Triple 40 PHH Mikuni's - Headers - Recaro Seats -
    R180 3.9 Diff - Close Ratio 5 Speed - Toyota Vented Brake Upgrade w/ Porterfield High Performance Pads & Shoes

    1972 Datsun 240z
    HLS30-75040


  20. #20
    Registered User Lazeum's Avatar
    Member ID
    CZCC-15411
    Join Date
    Nov 2007
    Location
    Paris, France (prev. Troy, Mi)
    Posts
    302

    Default

    You've got a golden back-up At least, there's some positive outcome to this failure.
    Matt - 72' 240z

  21. #21
    Supporting Member Diseazd's Avatar
    Member ID
    CZCC-14126
    Join Date
    Mar 2007
    Location
    Richmond
    Posts
    1,852

    Default

    This is the engine before installation .......sure was pretty.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	kdw 004.jpg 
Views:	107 
Size:	168.1 KB 
ID:	64853   Click image for larger version. 

Name:	kdw 005.jpg 
Views:	89 
Size:	170.1 KB 
ID:	64854  
    http://www.flickr.com/photos/1404980...7600346077563/
    ______________________________________________
    http://www.flickr.com/photos/1404980...7603350695459/

    70, 71, 2 72's, and a 73 240z....
    90 300zx and a 1996 Acura NSX.....but who's counting?

  22. #22
    Supporting Member Diseazd's Avatar
    Member ID
    CZCC-14126
    Join Date
    Mar 2007
    Location
    Richmond
    Posts
    1,852

    Default

    Thanks everyone for your condolences in my time of need........you guys are the best!
    http://www.flickr.com/photos/1404980...7600346077563/
    ______________________________________________
    http://www.flickr.com/photos/1404980...7603350695459/

    70, 71, 2 72's, and a 73 240z....
    90 300zx and a 1996 Acura NSX.....but who's counting?

  23. #23
    Boat Anchor Repairman Captain Obvious's Avatar
    Member ID
    CZCC-24608
    Join Date
    Jul 2011
    Location
    Philadelphia, PA
    Posts
    1,845

    Default

    Woof. That sucks... Hope you get to the bottom of it.

    Hoping to help in that endeavor, I'm no hydraulics expert, but I think you can rule out filter bypass problems.

    The purpose of the bypass on the filter is that as the filter gets dirty, the pressure required to force oil through it goes up. If the pressure differential between inlet and outlet of the filer gets too high (like in the event of a badly clogged filter), the bypass valve will be forced open and unfiltered oil will pass around the filter instead of through it. The engine will still get oil and the theory is that even unfiltered oil is better than no oil at all. There is a filter bypass valve built into the block, and most commercial filters have one built into the filter themselves.

    All that said... The opening pressure differential across the filter required to open the filter bypass is only a couple psi. I didn't look it up, but probably about five psi or so. Remember that you're only concerned with the differential between inlet and outlet. The absolute pressures don't matter. The point is that a clogged filter should not result in significantly higher oil pressure. The pressure increase even from a completely blocked filter should only be the pressure required to force open the bypass.

    Here's a snippet from the FSM that shows the lube scheme. You can see the pressure relief valve in the pump and the bypass valve on the filter:


    As for the pressure relief valve getting plugged with something? I doubt it. It's built right into the pump and essentially short circuits the pump. If the pump pressure gets too high (and we're talking absolute here) it will force open a valve that connects the outlet of the pump back to the inlet. The passages are large and if you've got a goober in there big enough to clog them, then you've got other serious issues.

    The valve might stick shut, but I'd be surprised if it got clogged shut.

    My theory is that as your bearings started to weld and the clearances went away, you started bouncing off the pressure relief in the pump. Prior to that time, your pressure was limited by the bearings, but when the bearings went south, the pressure went up until the pressure relief took over.

    Maybe you spun a bearing or five and blocked the oil supply holes to the crank as a result? Is that even possible?

    My condolences...

  24. #24
    Registered User Jeff G 78's Avatar
    Member ID
    CZCC-7975
    Join Date
    Mar 2005
    Location
    Northville, Michigan
    Age
    54
    Posts
    1,895

    Default

    OMG Guy, this is terrible! I'm so sorry to hear that your Safari Gold car is down.

    The only thing I can think of is if there was a blockage in one of the oil galleys that occurred at the machine shop or shortly after startup. If a piece of flash got lodged in an oil passage, it could create the high pressure and starve the bearings. Hopefully, the damage is limited and has not ruined everything in the engine.

    Have you drained the pan to see how much metal is in the oil?

    Please let us know what happened.
    Jeff
    Northville, Michigan
    IZCC #1285
    '78 280 10:1 CR, Arizona Z Car header, urethane bushings, Tokico springs, Illumina struts, Panasports w/Hankook R-S2 225/50R16 tires, Maxima 105 amp alternator
    http://www.classiczcars.com/photopos...00&ppuser=7975
    '74 260Z BRE look-alike crap can for Optima Batteries ChumpCar World Series Racing racing
    https://www.facebook.com/Jeff.Grauer

  25. #25
    Registered User madkaw's Avatar
    Member ID
    CZCC-7622
    Join Date
    Dec 2004
    Location
    bloomington IN
    Age
    57
    Posts
    2,288

    Default

    Quote Originally Posted by Jeff G 78 View Post
    OMG Guy, this is terrible! I'm so sorry to hear that your Safari Gold car is down.

    The only thing I can think of is if there was a blockage in one of the oil galleys that occurred at the machine shop or shortly after startup. If a piece of flash got lodged in an oil passage, it could create the high pressure and starve the bearings. Hopefully, the damage is limited and has not ruined everything in the engine.

    Have you drained the pan to see how much metal is in the oil?

    Please let us know what happened.

    This is what I think is my issue. In fact, one oil pan gasket change I found the foil seal from a oil bottle in the bottom of my oil pan. If somehow a piece of that lodged itself somewhere, there is my partial blockage.
    Steve
    71 240z,bw-5sp 2.4-40 over,balanced,e-88,big valves,ported&polished, stage2,header, triple Mikuni's 40's
    3.90 Subaru STI LSD

  26. #26
    Supporting Member Diseazd's Avatar
    Member ID
    CZCC-14126
    Join Date
    Mar 2007
    Location
    Richmond
    Posts
    1,852

    Default

    Click image for larger version. 

Name:	GOLD ENGINE.jpg 
Views:	164 
Size:	453.0 KB 
ID:	64860

    Thanks Jeff......I'm building two other engines at the time, so pulling that engine is on the back burner. I suspect oil pump, and will drop that this weekend. If the bearings are shot, I understand that when I drain the oil it'll smell like burnt toast. I go out of my way to keep an engine clean when I build them, and I never use RTV anywhere (I use form a gasket on the rear side seals and clean any excess on the inside), so that isn't a problem. I believe it's going to be oil pump related, but will have to wait and see. I've never heard of anyone having a failed oil pump....have you? Whatever it is, I hope that expensive E31 head is OK......we'll see, this is how you learn I guess......high oil pressure is a warning sign, just like low pressure.
    Last edited by Diseazd; 07-29-2013 at 11:48 AM.
    http://www.flickr.com/photos/1404980...7600346077563/
    ______________________________________________
    http://www.flickr.com/photos/1404980...7603350695459/

    70, 71, 2 72's, and a 73 240z....
    90 300zx and a 1996 Acura NSX.....but who's counting?

  27. #27
    Nova Scotia,Canada,Earth Blue's Avatar
    Member ID
    CZCC-7641
    Join Date
    Jan 2005
    Location
    NS
    Posts
    4,085

    Default

    Sad news. Strange problem. What does the oil filter contents look like? Open it up and have a look. I can only guess that something in the filter went down stream and blocked the main passage to the bearings.
    There is scarcely anything in the world that some man cannot make a little worse, and sell a little more cheaply.
    The person who buys on price alone is this man's lawful prey.


    John Ruskin (1819 - 1900)



    ZCars in Eastern Canada seaport ready for shipment to Europe

    http://ZSportCanada.com


  28. #28
    Boat Anchor Repairman Captain Obvious's Avatar
    Member ID
    CZCC-24608
    Join Date
    Jul 2011
    Location
    Philadelphia, PA
    Posts
    1,845

    Default

    I had a failed oil pump, but the failure mode was low pressure due to being all chewed up inside. Wasn't "positive" displacement anymore. Was sort of "fuzzy" displacement... I can't imagine a pump failure mode that would result in pressure too high other than a stuck pressure relief valve or incorrect spring pressure.

    It wouldn't take a lot of movement on a main bearing to eclipse the oil feed hole and if that happens, you'll see a pressure increase. Not sure if one main would be enough to bounce off the relief or not.

    So I'm still asking chicken or the egg?

    Did the oil galley to the mains get plugged with something and starve the mains? In order to get to that galley, it would have to have been left in there upon assembly or it would have to make it through the oil filter (or be a part of the filter itself that let go).

    Or did the mains grab the crank and due to too tight of an initial setup and eclipse the holes causing a chain reaction?

    In any event, sorry it happened and awaiting the autopsy.

  29. #29
    HLS30A 17574 djwarner's Avatar
    Member ID
    CZCC-27817
    Join Date
    Aug 2012
    Location
    Central FLorida
    Posts
    405

    Default

    Diseazd,

    Could we have a follow-up. What did you find?
    1971 240Z HLS30A 17574 L24-021025

  30. #30
    Supporting Member Diseazd's Avatar
    Member ID
    CZCC-14126
    Join Date
    Mar 2007
    Location
    Richmond
    Posts
    1,852

    Default

    Sorry DJ.....I haven't pulled it apart yet. I had another new engine to drop in, so I haven't checked the bottom mains yet. I certainly will follow up and let everyone know what I find when I do. Guy
    http://www.flickr.com/photos/1404980...7600346077563/
    ______________________________________________
    http://www.flickr.com/photos/1404980...7603350695459/

    70, 71, 2 72's, and a 73 240z....
    90 300zx and a 1996 Acura NSX.....but who's counting?

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. ac high pressure switch?
    By dcruz in forum Help Me !!
    Replies: 2
    Last Post: 10-05-2011, 04:58 AM
  2. Fuel Pressure - Schrader valves for checking and pressure relief
    By Zed Head in forum Fuel Injection (S30)
    Replies: 4
    Last Post: 08-29-2011, 08:50 AM
  3. High oil pressure
    By UR2H in forum Help Me !!
    Replies: 17
    Last Post: 08-21-2011, 10:32 AM
  4. Oil Pressure and Temper High
    By wreckerjimbo in forum Help Me !!
    Replies: 2
    Last Post: 06-11-2010, 09:14 AM
  5. High Pressure Fuel Lines?
    By mattymatmat in forum Carburetors (S30)
    Replies: 4
    Last Post: 08-27-2002, 04:05 AM

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •