Turbo boost

Chi_Town_MK3 · 03-15-2010, 12:19 AM

I got a 87 supra turbo and I was wondering how I can increase the boost on the stock C26 turbo. Is their a bigger internal wastegate I can get? Im not use to Supra's because I had a 98 Eclipse gsx b4 and I have a 92 twin turbo Supra that I bought modded already

Green7mgte · 03-15-2010, 02:02 AM

buy a boost controller.. or shim your wastegate

MA70-3.0GT · 03-15-2010, 05:23 AM

Lots of info on mbc's and shimming under that thar search button.

Chi_Town_MK3 · 03-15-2010, 04:49 PM

shimmed it today and it works great, thanks

MA70-3.0GT · 03-15-2010, 11:11 PM

Dont you just love how cheap and easy this turbo tuning lark is? Haha its great...

Green7mgte · 03-16-2010, 12:17 AM

whats a lark? like a gig.
how ez this turbo tuning gig is. aka job
just wondering

cre · 03-16-2010, 01:35 AM

Shimming the wastegate is a bad ideal, you limit the gate's ability to open as much as it is designed for... I'll let you guys search why that's bad.

If you're dying for more boost Google DIY MBC and build a "grainger MBC" for $15.

Also, be CAREFUL when upping the boost! Fuel cut is a safeguard, but it's not a 100% guarantee that you won't kill your engine.

Green7mgte · 03-16-2010, 06:18 AM

i was a faction of a second away from adding (not recommended) which it isn't. I just assumed the poster read up on the subject and weighed the consequences. lets hope so.

Chi_Town_MK3 · 03-16-2010, 05:51 PM

I only added 2 washers just to be safe

03-15-2010, 12:19 AM	#1
Chi_Town_MK3 Intake Join Date: Feb 2010 Location: Chicago Posts: 31	Turbo boost I got a 87 supra turbo and I was wondering how I can increase the boost on the stock C26 turbo. Is their a bigger internal wastegate I can get? Im not use to Supra's because I had a 98 Eclipse gsx b4 and I have a 92 twin turbo Supra that I bought modded already

03-15-2010, 02:02 AM	#2
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	buy a boost controller.. or shim your wastegate __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

03-15-2010, 05:23 AM	#3
MA70-3.0GT 12psi boost Join Date: Oct 2009 Location: Crewe, England Posts: 356	Lots of info on mbc's and shimming under that thar search button. __________________ '89 MA70 Supra GT aero 3.0turbo JDM, Rebuilt motor, K&N intake, 3" stainless turbo-back. New turbo and braided line kit... '89 Honda NC27 400, NC23 cams, open pipe, PC36a shock & possibly Showa USD forks... '83 Yamaha 29R XJ750E-II, number 69 off the line, only runner in the country? Original except Koni shocks '95 Honda PC26 CB500R, Winter hack, hateful, trying to sell it I'm not paranoid, they really ARE after me!!!

03-15-2010, 11:11 PM	#5
MA70-3.0GT 12psi boost Join Date: Oct 2009 Location: Crewe, England Posts: 356	Dont you just love how cheap and easy this turbo tuning lark is? Haha its great... __________________ '89 MA70 Supra GT aero 3.0turbo JDM, Rebuilt motor, K&N intake, 3" stainless turbo-back. New turbo and braided line kit... '89 Honda NC27 400, NC23 cams, open pipe, PC36a shock & possibly Showa USD forks... '83 Yamaha 29R XJ750E-II, number 69 off the line, only runner in the country? Original except Koni shocks '95 Honda PC26 CB500R, Winter hack, hateful, trying to sell it I'm not paranoid, they really ARE after me!!!

03-16-2010, 12:17 AM	#6
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	whats a lark? like a gig. how ez this turbo tuning gig is. aka job just wondering __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

03-15-2010, 04:49 PM	#4
Chi_Town_MK3 Intake Join Date: Feb 2010 Location: Chicago Posts: 31	shimmed it today and it works great, thanks

03-16-2010, 01:35 AM	#7
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Shimming the wastegate is a bad ideal, you limit the gate's ability to open as much as it is designed for... I'll let you guys search why that's bad. If you're dying for more boost Google DIY MBC and build a "grainger MBC" for $15. Also, be CAREFUL when upping the boost! Fuel cut is a safeguard, but it's not a 100% guarantee that you won't kill your engine. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

03-16-2010, 06:18 AM	#8
Green7mgte Supra Forum Moderator Join Date: Nov 2009 Location: Green-Ohio Posts: 1,297	i was a faction of a second away from adding (not recommended) which it isn't. I just assumed the poster read up on the subject and weighed the consequences. lets hope so. __________________ 92 Ma71 7mGTE Auto. SafcII Supra FAQ Supra MKIII FAQ Classified Section guidelines :

03-16-2010, 05:51 PM	#9
Chi_Town_MK3 Intake Join Date: Feb 2010 Location: Chicago Posts: 31	I only added 2 washers just to be safe

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