trims?? - Page 2

Burn N' Up · 11-16-2005, 01:44 AM

Thanks a bunch

1988gte · 11-16-2005, 08:53 PM

so are we 50 trim in factory form?

joel w · 11-16-2005, 09:00 PM

no, 50 trim is upgrade from stock to flow 17% more air. not sure of the stock trim size. but PT told me that the ct-26 was undersized even at 6.8 lbs from the factory....

dcrusupra · 11-16-2005, 09:09 PM

Whats the max boost on 50 trim and how much is it to get it to 50 trim?

joel w · 11-16-2005, 09:22 PM

i was told by PT it can boost up to 25 lbs, but it wont last long hahha and its way un-efficient(creates heat). i wont run over 15 psi cuz thats about the sweet spot (where its most efficient without creating heat) i think the rebuild was $350, and to upgrade was about 100$ +- more. but call around. lots of turbo shops out there.

dcrusupra · 11-17-2005, 05:44 AM

Whats the biggest trim the CT26 can take?

joel w · 12-05-2005, 10:22 PM

dcrusupra, im not sure how big they can go , sorry.

Quote:

Originally Posted by joel williams

trim by the way...
i think trim is just the size of the intake wheel diameter? mine was upgraded to 50 trim and the housing was machined to fit the larger wheel..and nothing was done to the exhaust side. i guess the exhaust side mods are not needed untill higher boost levels. 50 trim is good to about 400 hp or 15psi (the sweet spot of the turbo) where it runs most efficiently....bigger hp motors need more air and or lager wheel to flow more air..

hate quoting myself, but i posted bad info...

i just found out that trim is just the ratio of the two diameters of the compressor wheel. EXDUCER (big diam.) and INDUCER (small diam) ...trim is how much bite the blades have not the size of the wheel.. to help clearify..

stock ct26 is a 49 trim with 1.75(in) and 2.5 (ex) compressor wheel.
My upgrade is a 50 trim,with 2.25(in) and 3" (ex) compressor wheel. the ratio of the (ex) and (in) is almost the same but the wheel is overalll 1/2 inch bigger than stock diameter..... these measuremeants are not exact but rounded up or down..
ok... sum it up again, a 60. trim on a 3" wheel will grab much more air than say a 45. trim on a same 3" wheel due to the shape of the blades, not the size of the wheel.. but at the same time the 45. trim will spool much faster than the 60. trim its all very complex and mathmatical.. im still learning..

but remember the size and shape of the exhaust side wheel will also make a difference in spool time and flow and power..

hope this help..

1988gte · 12-06-2005, 05:40 AM

great info, i have always wondered about the trim stuff. make lots of sense now

89platypus · 07-14-2009, 06:37 AM

if you get a trim upgrade, do you start running leaner?do you have to get bigger injectors and the lexus afm?

11-16-2005, 09:00 PM	#13
joel w Lexus & 550's Join Date: Aug 2005 Location: In the shadows Posts: 506	no, 50 trim is upgrade from stock to flow 17% more air. not sure of the stock trim size. but PT told me that the ct-26 was undersized even at 6.8 lbs from the factory.... Last edited by joel williams; 12-05-2005 at 11:30 PM.

11-17-2005, 05:44 AM	#16
dcrusupra 500whp yet? Join Date: Aug 2005 Location: Plantation, Fl. Posts: 1,052	Whats the biggest trim the CT26 can take? __________________ New Rebuild My CarDomain

07-14-2009, 06:37 AM	#19
89platypus Stock Join Date: Apr 2009 Location: wisconsin,USA Posts: 9	if you get a trim upgrade, do you start running leaner?do you have to get bigger injectors and the lexus afm? __________________ 89 turbo supra K&N intake HKS mhg air conditioning delete lowering springs and struts Konig 17" Theory rims

11-16-2005, 01:44 AM	#11
Burn N' Up 3" Exhaust Join Date: Sep 2005 Posts: 238	Thanks a bunch

11-16-2005, 08:53 PM	#12
1988gte 3" Exhaust Join Date: Jul 2005 Location: Lubbock Texas Posts: 140	so are we 50 trim in factory form?

11-16-2005, 09:09 PM	#14
dcrusupra 500whp yet? Join Date: Aug 2005 Location: Plantation, Fl. Posts: 1,052	Whats the max boost on 50 trim and how much is it to get it to 50 trim?

11-16-2005, 09:22 PM	#15
joel w Lexus & 550's Join Date: Aug 2005 Location: In the shadows Posts: 506	i was told by PT it can boost up to 25 lbs, but it wont last long hahha and its way un-efficient(creates heat). i wont run over 15 psi cuz thats about the sweet spot (where its most efficient without creating heat) i think the rebuild was $350, and to upgrade was about 100$ +- more. but call around. lots of turbo shops out there.

12-06-2005, 05:40 AM	#18
1988gte 3" Exhaust Join Date: Jul 2005 Location: Lubbock Texas Posts: 140	great info, i have always wondered about the trim stuff. make lots of sense now