Shimming Wastegate - Page 3

boostedmkIII · 11-21-2005, 03:39 PM

Shimming the wastegate is fun! And a cheap way to make power!

MA70-3.0GT · 03-08-2010, 06:21 PM

Thread necromancy I know but just a quick q, everyone is talking in terms of washers but has anyone ever measured the actual thickness in case someone comes across a batch of thicker washers & toasts their baby?

Also, on the subject of toasting & the question of boost spike/creep. Wouldn't 'yotas fuel cut save the motor & give a hint that something's wrong provided you took action as soon as it happened?

And I'm considering going for maybe 4/5mm worth of shimming, as from what I gather (although it's not so clear hence why I asked) that would take it from 6 to about 10/11psi?

john_lauj · 03-08-2010, 06:46 PM

is there another way of shimming it cause mine is shimmed and i can not figure out where its shimmed at. i bought it from a old white dude. he said he shimmed 2 washer but there is no way of showing that he shimmed it. that is the only way i know how to shimmed it too. but there is no washer right there, is there another way???

11-21-2005, 03:39 PM	#21
boostedmkIII 3" Exhaust Join Date: Aug 2005 Location: Colorado Posts: 98	Shimming the wastegate is fun! And a cheap way to make power! __________________ 4" Turbo back/maft-pro powered/70mm TC turbo/JE Built forged motor

03-08-2010, 06:21 PM	#22
MA70-3.0GT 12psi boost Join Date: Oct 2009 Location: Crewe, England Posts: 356	Thread necromancy I know but just a quick q, everyone is talking in terms of washers but has anyone ever measured the actual thickness in case someone comes across a batch of thicker washers & toasts their baby? Also, on the subject of toasting & the question of boost spike/creep. Wouldn't 'yotas fuel cut save the motor & give a hint that something's wrong provided you took action as soon as it happened? And I'm considering going for maybe 4/5mm worth of shimming, as from what I gather (although it's not so clear hence why I asked) that would take it from 6 to about 10/11psi? __________________ '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!!!

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03-08-2010, 06:46 PM	#23
john_lauj Stock Join Date: Mar 2010 Location: frresno Posts: 20	is there another way of shimming it cause mine is shimmed and i can not figure out where its shimmed at. i bought it from a old white dude. he said he shimmed 2 washer but there is no way of showing that he shimmed it. that is the only way i know how to shimmed it too. but there is no washer right there, is there another way???