Engineering a Turbo RX-8 Series 2 GT

Discuss any information on turbo charging or super charging the RX8.

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Re: Engineering a Turbo RX-8 Series 2 GT

Post by zoom » Sat Aug 01, 2015 8:57 pm

Brettus, where did you see that said?
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Re: Engineering a Turbo RX-8 Series 2 GT

Post by brettus » Sun Aug 02, 2015 9:03 am

Two posts back :mrgreen:

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Re: Engineering a Turbo RX-8 Series 2 GT

Post by zoom » Sun Aug 02, 2015 9:14 am

Ohh wow. I read the thread front to back and back to front and missed that. Sorry :/
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Re: Engineering a Turbo RX-8 Series 2 GT

Post by brettus » Sun Aug 02, 2015 9:29 am

Saint wrote:Yup, all running smoothly now, I had to rebuild the engine but Ric looked after me above and beyond. The turbo is a Borg Warner 7671.
So lets talk about spoolup . At what rpm can you see 10psi ?

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Re: Engineering a Turbo RX-8 Series 2 GT

Post by skc » Sun Aug 02, 2015 1:55 pm

brettus wrote:Can't see how a sohn adapter would prevent an omp failure .
Stand corrected, yes omp will control both methods. However, this a very rare failure and supposedly, the engine should go into limp mode if such a failure occurs.
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Re: Engineering a Turbo RX-8 Series 2 GT

Post by ric shaw » Sun Oct 04, 2015 12:23 pm

the RX8 GT series 2 cars have a very different omp system, you can not fit an sohn adapter.
lack of oil feed to lube apex seals will create heat that will damage the seals and eventually the chrome on the housings.
always best to add premix to fuel. the turbo cars need more oil than what is injected by factory.
Saints car had the oil warning light flashing intermittently , the omp was not operating right and is impossible to test on a S2 car.
Because we have to use apex seals that wont break in a turbo conversion the same seal as a trade off will bend more easily. this saves the engine so far as housings and rotors and turbo rather than breaking and damaging these components. You cant have a seal that wont break and wont bend from heat (lack of oil or fuel). Every thing is always a compromise.
I continue to test Apex seals and that is for another thread. Madza spent millions to make/test the factory seal material but not for RX8 turbos with a static comp of 10:1 on shit fuel.

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Re: Engineering a Turbo RX-8 Series 2 GT

Post by donger » Tue Nov 03, 2015 10:27 am

I have a low mount yes it is tight ,225 atrw on 10 psi , it is legal with the engineers cert that I have. it is worth all the money you spend making your wolf in sheep's clothing !! get ready to buy tyres more often !!

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Re: Engineering a Turbo RX-8 Series 2 GT

Post by skc » Wed Nov 04, 2015 10:38 am

Any updates photo before and after dyno?
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