turbo "trim"

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turbo "trim"

Postby theUNYTEDone » Wed Apr 12, 2006 2:06 am

im sorry this is a very noobish question, but can someone explain what turbo trim is, as well as the benefits of having upgraded trim is. im purchasing a CT26 with 58 trim, and really have no idea about the trim part. i tried searching wikipedia, and have read it numerous times on the board....any clarification, please?
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Postby Gary » Wed Apr 12, 2006 3:04 am

93 ST185
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Postby theUNYTEDone » Wed Apr 12, 2006 6:54 am

WOW! thanks a LOT Gary...very insightful.
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Postby Toxygene » Wed Apr 12, 2006 3:53 pm

I read that whole thing and man.. I am insatiable.. I want more! haha.. I am hungry for Engine tech articles. I eat it up like a fat lady on chocalate binge. :D
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Postby db » Wed Apr 12, 2006 8:39 pm

The most common trims for upgraded CT26s are 46 and 50. Everyone at MR2OC seems to think anything bigger is a waste.
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Postby Toxygene » Wed Apr 12, 2006 8:40 pm

:shock: Desert is SERVED! YUM! :lol:
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Postby db » Wed Apr 12, 2006 8:47 pm

Desert is served?

Remember, we'd rather have two deSSerts than two deSerts.


Sorry, I had retarded teachers.
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Postby Toxygene » Wed Apr 12, 2006 8:48 pm

This is what I have read before on the Stock CT26 turbo and it explains it's pros and cons.

http://www.mrcontrols.com/primers/turbo.htm

They discuss that the only upgrade anyone should ever need on a stock block would be this one:

http://www.extremeboost.com/specials/CT26-35R.htm

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Postby db » Wed Apr 12, 2006 8:49 pm

That CT26/35 is cool, but I think it's a pretty big sized turbo for a stock block.
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Postby Toxygene » Wed Apr 12, 2006 8:51 pm

I wish they had a compressor map of that turbo. Otherwise I'd love to hear more specifically why you feel that way DB. I would value your opinion as I'm seriously considering purchasing that turbo. Although, I also plan on doing a 2.2 liter stroker kit as well in the future. So could you tell me what you think about that turbo in both applications?
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Postby db » Wed Apr 12, 2006 8:55 pm

Like you said, no one has a compressor map for it, but I've heard its comparable in size to a GT30, maybe a tad larger.

So, it could be used with a stock block, but to get a decent amount of boost out of it, I'd recommend a built engine and EMS for longevity and durability.

I do think there was an MR2 with one installed. Maybe I can find if it had any dynos done to it.

Edited to add:
Didn't find any dynos handy, but a bunch of references after searching for "ct26/35r" on MR2OC.com

Here's a quote, ".85 a/r turbine with a GT35R compressor wheel. 61mm 56 trim compressor. No, it will not run out of puff"
Also, it supports about 300 whp near 10 psi (therefore the limit of boost on the stock fuel system) and well over 400 whp at more realistic boost levels.

Do a search yourself for more info.
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Postby theUNYTEDone » Thu Apr 13, 2006 1:15 am

hey toxy, with that hot end bolt configuration, won't one need to get a downpipe with a matching flange? 7 bolt...hmmm....externally wastegated. awesome.
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Postby theUNYTEDone » Thu Apr 13, 2006 1:17 am

db wrote:The most common trims for upgraded CT26s are 46 and 50. Everyone at MR2OC seems to think anything bigger is a waste.


does a higher number indicate higher trim, or is it the other way around?
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ct26/gt35r

Postby GMan » Thu Apr 13, 2006 1:40 am

> Toxygene
> Location: Long Beach, CA
> Posted: Wed Apr 12, 2006 8:48 pm
> They discuss that the only upgrade anyone should ever need on a stock block would be this one:
> http://www.extremeboost.com/specials/CT26-35R.htm

LB's of Extreme Boost fame ? :-)
Anyone get one of these hybrids?
They were Big bucks $2k US ?
There was supposed to be a Group Purchase started.
Never heard of anyone getting one though.

one graph of output.
http://www.turboforum.net/dyno/pages/ct2635r.htm

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