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Thread: Back to the track

  1. #1
    Registered User Pablo's Avatar
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    Default Back to the track

    Hi! New member looking for suggestion from expirienced Z-car techs and racers. I have a 73 240z that I found been used as a shelf because of blown eng. owner stored it for about 5 yrs till decide to sell. It was in New Jersey {rust} I brought it down to Florida took it all apart in 1989 made some what of a race car of it and did some scca ITS for a couple of years til money and time put it on HOLD. Now thing are a bit better looking to get back to mainly have fun. It has a nice custom cage welded in ground control coil over convertion, suspension technique sway bars frt/rear, switch to dome top su's. The car handled good with the best of them, just when we got to the straights the best would pull away like if I was still. since then I got a E-31 head still boxed till needed. I have a E-46 manifold I been using also have a N-33 that came in a junkyard eng. They look pretty much the same? I hear there are some better than others. and cam I have a couple of the stock E-31 cams one has some worn lobes? Looking to do a 1.5 hr enduro at Daytona {My favorite} in May 07 been doing some DE's to brush up on the driving now if some of you guys would help me with some ponys I'll hope to dust some of those Mazdas. That would be worth the effort. Thanks Pablo
    PS sorry for been so long got carried away.

  2. #2
    HLS30165540
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    Hopefully one of our club racers will give some input. But I can tell you this. To go faster you will have to spend $$. More $$$ the faster you will go. What kind of engine modifications are allowed?
    The 1973 240Z 165540 Slightly modified. L28, 5sp, cam, headers, MSD 6AL, power windows, power door locks, leather seats, custom this and custom that.

  3. #3
    Registered User Pablo's Avatar
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    Thanks ED! Yes I spend a few $$$ already to get it to this stage. That was 16 yrs ago when I started the project. Then the 240's were competive till the 2nd generation RX7 and 325 Bimmers were made legal. There is a 240 down here that he got his dialed in. He put them in their place [behind ], I"m not sure how willing he would be about letting out some secrets. As far as the rules I'm not up on the latest, but I can change to 15 inch rims. the eng. you are allowed up .5 compression ratio. all stays stock allowed to change parts within a model [got rid of the flat top Hitachi's], and fuel metering and air cleaners are open. I'm sure there is more to it than that or how to interpret rules? I had my E-88 head shaved forgot how much I'm sure is in paper somewhere bearlly to the bottom of the E-88 I had it out in March over at Sebring for a DE, it felt real good back behind the wheel. Going back in Nov. with some mod. already in the works. Always open for suggestions
    Thanks

  4. #4
    HLS30165540
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    Depending on the track maybe a rear diff gear ratio change. This would definately give you better acceleration, and hurt your top speed. But if you never reach top speed anyway then the diff would be the way to go.
    The 1973 240Z 165540 Slightly modified. L28, 5sp, cam, headers, MSD 6AL, power windows, power door locks, leather seats, custom this and custom that.

  5. #5
    Registered User Pablo's Avatar
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    Thanks ED. I was giving-up hope for help! But I have three diff ratios the 180 that came with the car plus two 200 that I got from the junkyard, all three I welded. I could never find a limited slip [did not know what cars had them] but I understand they like to overheat, so for now I'll keep the welded ones. does anyone know specs on n-27 su needles. I hear they are the hot ticket?

  6. #6
    Registered User Pablo's Avatar
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    Hey Ed1 Just noticed you are from the Niagara Falls area. I grew up in N.J. now that I'm down in Fl. me and the family are talking about going up there for vacation next summer or 08.

  7. #7
    The Lone Potter v12horse's Avatar
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    Pablo,

    I know that the Z31 turbo had a R200 LSD. Maybe you could find one at a junkyard. Most of the yards around here have had those special pieces removed. Good luck with the racing. These cars are quite the spectacle in action.

    take care,
    Ben
    "A real sports car chooses its owner because it has a soul. If you're chosen, you'll love it, and the more it requires care and maintenance the more you love it." -Mr. Morita (Z432 owner)

    RLS30-034436
    305 GP Light Blue

  8. #8
    Registered User Pablo's Avatar
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    Does anyone know if there were different cams for the 240z in different years or packages and how to tell them appart. Thanks

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