Originally Posted by Brettus
(Post 4734473)
She Runs !!!
Originally Posted by Brettus
(Post 4734475)
This seems to have worked .... the loud glugging after engine shutdown has gone and now I just hear a swishing noise so I think the turbo water is siphoning perfectly now .
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Just run a separate coolant circuit for the turbo with a pump, reservoir, and heat exchanger. Complicate all the things, :lol:
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Originally Posted by slash128
(Post 4734658)
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. |
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?
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Originally Posted by skc
(Post 4734696)
Any dowels or studding?
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Originally Posted by 9krpmrx8
(Post 4734664)
Just run a separate coolant circuit for the turbo with a pump, reservoir, and heat exchanger. Complicate all the things, :lol:
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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. |
Originally Posted by logalinipoo
(Post 4734709)
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. 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!!!
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Sounds good man, can't wait to see some videos!
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Originally Posted by JimmyBlack
(Post 4734719)
Better than Greddy spool + 400whp peak = Total Win!!!
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16 psi on a renesis is amazing. Hope your cooling holds up
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Originally Posted by skc
(Post 4734868)
16 psi on a renesis is amazing. Hope your cooling holds up
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Starting to get excited about the potential of this setup . This is at only 10psi ..........................
https://cimg1.ibsrv.net/gimg/www.rx8...205c822d2f.jpg Edit : put torque and power on same axis |
Nice numbers for 10psi!!!
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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. |
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Next minute, 14psi vs. 16psi
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Originally Posted by JimmyBlack
(Post 4735377)
Next minute, 14psi vs. 16psi
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Time to try an open wastegate ........................ turbine backpressure is way higher than I expected !
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Originally Posted by slash128
(Post 4735403)
Some people are boost junkies. I just don't get it :icon_no2:
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sounds like more of a compliment than an accusation
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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 ...
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