tonyhawk Posted January 15, 2007 Share Posted January 15, 2007 I've just started a rebuild of my engine and I was wondering what head gasket to use? I apologise if this has been posted before, I did a search and found tons of threads on Head Gaskets, but nothing definitive on what to use for my intended config; although there are over 400 threads with that key word, so I've probably missed it! I'm looking to get about 550RWHP when I'm finished, but it'll be done in stages as cash allows; as such, while I am running hybrids at the mo, I will be getting something with a little more punch later, so should I provide a lower CR to allow for the increased boost? My question is, in relation to my end goal, what head gasket (thickness) should I use? I can put an engine together, but my knowledge of CR verses Boost is not exactly comprehensive, so any advice would be very much appreciated. Thanks Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted January 15, 2007 Share Posted January 15, 2007 I've just started a rebuild of my engine and I was wondering what head gasket to use? I apologise if this has been posted before, I did a search and found tons of threads on Head Gaskets, but nothing definitive on what to use for my intended config; although there are over 400 threads with that key word, so I've probably missed it! I'm looking to get about 550RWHP when I'm finished, but it'll be done in stages as cash allows; as such, while I am running hybrids at the mo, I will be getting something with a little more punch later, so should I provide a lower CR to allow for the increased boost? My question is, in relation to my end goal, what head gasket (thickness) should I use? I can put an engine together, but my knowledge of CR verses Boost is not exactly comprehensive, so any advice would be very much appreciated. Thanks Stock thickness, CR is adjusted by piston dish depth, or chamber volume, not gasket thickness. Thick gaskets kill the squish volume that's needs to be kept small to stop detonation. Using a thick gasket is a really crude way to drop CR. Quote Link to comment Share on other sites More sharing options...
tonyhawk Posted January 15, 2007 Author Share Posted January 15, 2007 Thanks for that, it's much appreciated. My next question is: would the Toyota gasket be good enough, or should I opt for something else; if the later then what is the stock thickness? I have seen conflicting reports on this forum as to whether it is 1.2mm or 1.4mm. Sorry to respond with another question. Quote Link to comment Share on other sites More sharing options...
adi2009 Posted January 15, 2007 Share Posted January 15, 2007 I think for those power levels the stock TT headgasket is absolutely fine, most people dont alter compression ratio on the TT engines as it is 8.5:1 stock. Quote Link to comment Share on other sites More sharing options...
Jake Posted January 15, 2007 Share Posted January 15, 2007 The stock head gasket is fine for any power level. There are guys in the states running 1000bhp with the stock one Quote Link to comment Share on other sites More sharing options...
tonyhawk Posted January 15, 2007 Author Share Posted January 15, 2007 Thanks for all responses, it's much appreciated; stock it is then... :o) Quote Link to comment Share on other sites More sharing options...
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