W00T!!!

Any details on what you changed? Mine glugs a little bit after shutdown, through the heater core, which feeds the turbo. I haven't really been worried about it, but interested to know how you addressed yours.

 

Just run a separate coolant circuit for the turbo with a pump, reservoir, and heat exchanger. Complicate all the things,

 

The fabricator made a bracket to fit both hoses up high . The return had to drop down a good 10" to feed back into the block . I just eliminated that and fed the hoses straight in.

 

Summary of what has been done since engine torn down.

Engine rebuilt :
No new major parts
Stock rx8 corner seals machined for deeper rx7 apex seals
Side exhaust ports ported
Rotating assy. balanced
Siamese sleeve modded for increased flow
Injectors cleaned and flow tested

New second hand 5 speed transmission fitted
New 600hp+ carbon Kevlar clutch fitted
Turbo switched back to 1.01 twin scroll turbine hsg.
Added heat shielding under compressor hsg.
Turbo water cooling re-routed
Manifold flange now has boost gage to show turbine backpressure . Both sides tapped.
Drilled and tapped turbo entry for possible pre turbo W/I in future or vac. gage.

Have to put a few miles on it now before slapping it on the dyno and seeing what she will do .
Road trip time !

 

Any dowels or studding?

 

Yep .... dowelled as per Brettus turbo 11 thread.

 

Lol that's too much work for me

 

Did you clock the chra 30 deg and plan for the water flow? Where'd you run your water.

I came from the heater core to the bottom of the turbo, then out the top of the turbo to the thermostat housing.

 

Yes , turbo was clocked to get the siphoning . I run mine off the take off points for the throttle body.



Results are in for spoolup ! :

10psi at 3400
14psi by 3900
16psi by 4200 ish .... (estimated)

Exhaust backpressure is following boost pressure up to 4500 . Have not boosted past that rpm yet.

This is slightly better than a Greddy turbo so not too shabby .
So ...... not as good as I had hoped for but way better than it was on my other engine.
Probably would have got the 16psi by 3500 I had hoped for if I'd have opted for the GTX3576 .

Will do some full logs once engine is fully run in.

 

Better than Greddy spool + 400whp peak = Total Win!!!

 

Sounds good man, can't wait to see some videos!

 

I would say spoolup is now acceptable given what i set out to do . I'll be happy with it . Now to find out how the top end has been affected

 

16 psi on a renesis is amazing. Hope your cooling holds up

 

Not a problem for street ............. on track i wont run it that high.

 

Starting to get excited about the potential of this setup . This is at only 10psi ..........................




Edit : put torque and power on same axis

 

Nice numbers for 10psi!!!

 

 

I'll be recommending large injectors are fitted into Secondary position from now on . I accidentally got mine reveresed when i put it together so thought i'd tune it that way rather than pull it apart again.
Works much better - way easier to tune . Plus i think it's better to have more fuel going into the sec. ports rather than such a high % going into the primary ports.

 

 

Next minute, 14psi vs. 16psi

 

Some people are boost junkies. I just don't get it

 

Time to try an open wastegate ........................ turbine backpressure is way higher than I expected !

 

I got accused of being the "oldest teenager in town" today !

 

sounds like more of a compliment than an accusation

 

What about cooling ??? And how can it be reliable with stock seals ? This amount of power "must" need seal ugrade and also a methanol kit install to make it reliable if you ask me ...