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Old 03-15-2010, 12:19 AM   #1
Chi_Town_MK3
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Default 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
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Old 03-15-2010, 02:02 AM   #2
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buy a boost controller.. or shim your wastegate
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Old 03-15-2010, 05:23 AM   #3
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Lots of info on mbc's and shimming under that thar search button.
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Old 03-15-2010, 04:49 PM   #4
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shimmed it today and it works great, thanks
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Old 03-15-2010, 11:11 PM   #5
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Dont you just love how cheap and easy this turbo tuning lark is? Haha its great...
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'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
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Old 03-16-2010, 12:17 AM   #6
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whats a lark? like a gig.
how ez this turbo tuning gig is. aka job
just wondering
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Old 03-16-2010, 01:35 AM   #7
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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.
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Old 03-16-2010, 06:18 AM   #8
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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.
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Old 03-16-2010, 05:51 PM   #9
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I only added 2 washers just to be safe
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