Head skim requirement? - Page 2

cre · 12-08-2009, 08:49 PM

That's the thing... Toyota only ever made the one head gasket for the 7M. I assume they expected you to just use it and not worry about the small increase in compression ratio until you had milled down to a certain level.

MA70-3.0GT · 12-15-2009, 06:03 PM

Hmm, seems I missed this post too! Been too busy hassling the bank for more money to get online much lately...

Anyhow, the head's come back as nice & true and should come up a treat. Think it's going to be well after Christmas though before I rebuild everything, mainly 'cause of cashflow but also my folks are moving house in a few days & I should really lend a hand with the inevitable mayhem. What a time to move, right before Christmas...

It's 'cause our lovely, kind, giving government are putting up the duty on house sales (amongst other things) after then & well, we ain't the kind to avoidably line the pockets of a stinking politician...

So anyways, If I don't get back online before then, Merry Christmas to all & hope 'Supra-Claus' brings all the Toyota goodies everyone's wishing for!!!

12-15-2009, 06:03 PM	#12
MA70-3.0GT 12psi boost Join Date: Oct 2009 Location: Crewe, England Posts: 356	Hmm, seems I missed this post too! Been too busy hassling the bank for more money to get online much lately... Anyhow, the head's come back as nice & true and should come up a treat. Think it's going to be well after Christmas though before I rebuild everything, mainly 'cause of cashflow but also my folks are moving house in a few days & I should really lend a hand with the inevitable mayhem. What a time to move, right before Christmas... It's 'cause our lovely, kind, giving government are putting up the duty on house sales (amongst other things) after then & well, we ain't the kind to avoidably line the pockets of a stinking politician... So anyways, If I don't get back online before then, Merry Christmas to all & hope 'Supra-Claus' brings all the Toyota goodies everyone's wishing for!!! __________________ '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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12-08-2009, 08:49 PM	#11
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	That's the thing... Toyota only ever made the one head gasket for the 7M. I assume they expected you to just use it and not worry about the small increase in compression ratio until you had milled down to a certain level.