Brettus turbo 111 (the ultimate Renesis turbo ?)
12-17-2015, 12:36 PM
#701
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.
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.
12-17-2015, 02:01 PM
#704
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 !
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 !
Last edited by Brettus; 12-17-2015 at 02:56 PM.
12-17-2015, 10:11 PM
#707
12-17-2015, 10:21 PM
#708
Driving my unreliable rx8
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.
I came from the heater core to the bottom of the turbo, then out the top of the turbo to the thermostat housing.
12-18-2015, 12:31 AM
#709
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.
Last edited by Brettus; 12-18-2015 at 01:07 AM.
12-22-2015, 03:57 PM
#718
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.
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.
12-23-2015, 02:01 AM
#724
sounds like more of a compliment than an accusation
12-23-2015, 07:23 AM
#725
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 ...