3rd Generation Specific Talk about 3rd gen RX-7's here.

question for you guys...

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Old 08-19-2002, 09:37 PM
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does anyone here know of a daily driven fd single turbo that makes over 400 whp that has lasted longer than a year without blowing a seal or otherwise crapping out. (daily driven= 8000+ miles per year)



i'm trying to convice vosko to install a supra motor or just buy a supra.

help me out.
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Old 08-19-2002, 09:46 PM
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I actually know of 5 FD's here in Okinawa that have lasted that long. In fact, One of them is a T-51S Bridgeport...500+ rwhp. He breaks trannys...not engine's though.



400 rwhp...NO PROBLEMO...



500 rwhp...a little harder, but still do-able. I would tune a little richer here since the margin for error is smaller.
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Old 08-19-2002, 09:54 PM
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ok i hear that, but i really am wondering about this, my bro is looking into an fd and when he looks on autotrader and ebay every single one he finds has had a new engine at about 50 or 60 thousand miles.... i would love to have another 7 at the house, but he's not convinced on the reliability...tell me why!
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Old 08-20-2002, 06:25 AM
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Originally Posted by EmpDenied' date='Aug 20 2002, 12:54 PM
ok i hear that, but i really am wondering about this, my bro is looking into an fd and when he looks on autotrader and ebay every single one he finds has had a new engine at about 50 or 60 thousand miles.... i would love to have another 7 at the house, but he's not convinced on the reliability...tell me why!
Because of Driver maintenance. Simply put.
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Old 08-20-2002, 06:58 AM
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Originally Posted by jspecracer7' date='Aug 20 2002, 05:25 AM
[quote name='EmpDenied' date='Aug 20 2002, 12:54 PM']ok i hear that, but i really am wondering about this, my bro is looking into an fd and when he looks on autotrader and ebay every single one he finds has had a new engine at about 50 or 60 thousand miles.... i would love to have another 7 at the house, but he's not convinced on the reliability...tell me why!
Because of Driver maintenance. Simply put.[/quote]

Exactly. These cars are not race cars off the showroom floor, they are built for the general public. If someone wants to drive an R-X7 like a race car, it needs to be upgraded like a race car, and then maintained like one. You dont see very many top fuel dragster teams or Indy teams run the crap out of their car in an afternoon, load it on the trailer, and do it again the next weekend w/o some serious tear down, i.e major maintenance.
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Old 08-20-2002, 09:20 AM
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this thread is from my friend steve who's car was stolen. anyway he's just mad his car is slower than both of mine :P
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Old 08-20-2002, 11:11 PM
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how many hp can the stock FD tranny take reliably? What mods do u needa do to it to make it take over 500rwhp reliably?



cheerz volod
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Old 08-21-2002, 08:15 AM
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Originally Posted by Volodkovich' date='Aug 21 2002, 02:11 PM
how many hp can the stock FD tranny take reliably? What mods do u needa do to it to make it take over 500rwhp reliably?



cheerz volod
I've seen a stock tranny FC go to 550+ rwhp...but his entire drive line was replaced since he was breaking axle/half shafts/diffs...



I've seen a BP FD with roughly 500+ untuned rwhp do the same on a stock tranny/axle/half shafts and a Cusco Diff.



They'll hold WAY more than ANY SR20DET...no doubt.
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Old 08-21-2002, 11:48 AM
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The reason the motor on a FD only last to 50-100K is because at around 50K miles the apex seals stard to harden which makes them more brittle. The more miles you go the more brittle it gets. If your only running 5psi like a Turbo 2 its no big deal. If your N/A its no big deal, the brittle seals will last 150K miles.



If your running 10psi of boost and more it is a big deal and they break....everytime.



I think cryo treatment will help this and it would be very cheap for apex and side seals and springs. I might do it but I havent yet because I figure I'll pop it before 50K anyway. I plan on pushing 400+rwhp and I dont expect it to live to see 50K. Maybe I'll get them treated anyway though just for the hell of it....it would be a good test.



STEPHEN
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Old 08-21-2002, 05:01 PM
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Originally Posted by SPOautos' date='Aug 21 2002, 09:48 AM
The reason the motor on a FD only last to 50-100K is because at around 50K miles the apex seals stard to harden which makes them more brittle. The more miles you go the more brittle it gets. If your only running 5psi like a Turbo 2 its no big deal. If your N/A its no big deal, the brittle seals will last 150K miles.



If your running 10psi of boost and more it is a big deal and they break....everytime.



I think cryo treatment will help this and it would be very cheap for apex and side seals and springs. I might do it but I havent yet because I figure I'll pop it before 50K anyway. I plan on pushing 400+rwhp and I dont expect it to live to see 50K. Maybe I'll get them treated anyway though just for the hell of it....it would be a good test.



STEPHEN
thats interesting i've never heard that before. i know the old 2 piece seals either have some kind of harmonic, or going over the exahaust port hurts them because they all break the same way. actually most of the 3 piece ones break the corner off, next to the triangular end piece.



mike
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