Subject	I built and positioned the turbos for easy access to the
Posted by	Ash's Z on February 17, 2006 at 8:06 PM
	This message has been viewed 135 times.
In Reply To	You have way more patience than me my friend. posted by Riddick on February 17, 2006 at 07:58 PM
Message	bolts that hold them in place. The wastegates in the turbos are too small to vent exhaust manifold pressure away from the turbine. Even with a base actuator setting of 10psi, it will hit 10psi by ~3000RPM and by 5000RPM it is around 18psi, and then by 8000RPM it is around 23psi. Its a hell of a ride as it just keeps pulling harder and harder to redline, but this is a very unsafe condition for the engine. I am going to port out the wastegate hole and feather the port on the inside to allow more pressure to vent through the wastegate. This should resolve the problem. This never once crossed my mind while putting the engine together though - first time I have ever seen it. Took me the past 3 days to diagnose it. :-/ [ ashspecz.com ] [ agpowers@bellsouth.net ] Enthusiasts soon understand each other. --W. Irving. Are you an enthusiast? If you are out to describe the truth, leave elegance to the tailor. Albert Einstein
Follow Ups	AshsZ-II Ultimate Street Z Progress: Turbo Removal: 3hrs - Ash's Z 19:30:36 02/17/06 nice with the motor in the car and everything... looks good (n/m) - chris@boostpro.net 19:32:27 02/17/06 I'm gonna try and pull a monkey out of my - zgene4 19:38:13 02/17/06 nice hope u fix it.. didnt u rig that motor,exhaust,manifold - fst300zx 19:45:43 02/17/06 Yep - you can access the turbine housing bolts relatively - Ash's Z 20:11:33 02/17/06 Ash, what parts did you repostion...and where - jzee32tt 20:19:26 02/17/06 I didn't move anything around in the engine bay for the - Ash's Z 20:33:09 02/17/06 You have way more patience than me my friend. - Riddick 19:58:12 02/17/06 I built and positioned the turbos for easy access to the - Ash's Z 20:06:55 02/17/06 Ah. Got it now. Thanks bro for the detailed explanation. - Riddick 20:12:03 02/17/06 Wow ash, thats incredible. This setup sounds beyond - CaliguyPurdue 20:23:24 02/17/06 boost creep is common on other cars >> - ztunerz 20:40:38 02/17/06 I have 3" downpipes and have never had that problem.. - Shawn300zTT GT28R MD 20:55:17 02/17/06 They are 5speed housings, .63 A/R. - Ash's Z 22:12:04 02/17/06 whoops, I thought I read it was the auto housings... - Shawn300zTT GT28R MD 22:26:49 02/17/06 Base boost was originally 18psi, then I dropped it to 14psi - Ash's Z 10:11:04 02/18/06 Let's hope that it is not the 1 5/8" dump pipe (n/m) - govaardz(Aruba) 13:56:19 02/18/06 I have a spare set of newer HKS actuators if needed. (n/m) - SniPer SR71 (Dallas) 22:28:59 02/17/06 Hey bro, That's not really a bad problem when you think - DAYTONAZ 20:14:55 02/17/06 Not really, no. I can think of a thousand other things that - Ash's Z 20:37:13 02/17/06 How do you think the 60mm TB's are working for you? - Shawn300zTT GT28R MD 21:41:40 02/17/06 Well, I'm sure they are better than the oem units. :) (n/m) - Ash's Z 22:12:58 02/17/06 Why are the AN fittings on the EGR returns on the sides - Shawn300zTT GT28R MD 21:44:39 02/17/06 Those tie into my TiAl BOVs. (n/m) - Ash's Z 22:15:47 02/17/06 thats a pretty neat idea... - Shawn300zTT GT28R MD 22:28:03 02/17/06
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