ancullen Posted November 5, 2006 Report Share Posted November 5, 2006 (edited) I've searched everywhere and can't seem to find any specs on the volume of the piston dish for 4A-GZE pistons. I want to know this as I'd like to calculate what my compression ratio would be with a different head gasket. All that I have been able to establish so far is that the volume of each cylinder in a 4A-GE 16v's head is 39cc. Now all I need is the volume of the piston dish so I can do the calculation. If anyone knows this figure, or has a spare 4A-GZE piston sitting around that they can measure the volume with, could you please post the answer up here. BTW, if there are any of you guys that work for Toyota who could get a definite answer on this figure, it would be much appreciated. And if you've got the time, it'd be good to know the volumes for each piston available so no-one runs in to this issue in the future as we can FAQ it. Edited November 7, 2006 by ancullen Quote Link to comment Share on other sites More sharing options...
Des Posted November 6, 2006 Report Share Posted November 6, 2006 Because of the compression difference's between the bigport and smallport of the 4agze's would they have different pistons ? Quote Link to comment Share on other sites More sharing options...
ancullen Posted November 6, 2006 Author Report Share Posted November 6, 2006 I'm not sure. I'm hoping whoever can answer my question can also answer that one. The smallport 4A-GZE may use a different thickness head gasket (thinner), or the pistons could be different, or there could be a difference in the cylinder head volume between the smallport and bigport. Does anyone know? Teddy? TRD brothers? Redwarf? Quote Link to comment Share on other sites More sharing options...
Des Posted November 6, 2006 Report Share Posted November 6, 2006 I just got back from toyota in beaudesert and they didnt have any listings on any 4AGZE's. Old mac toyota is ment to have some info on 4AGZE's so teddy this is where you come into it..... Quote Link to comment Share on other sites More sharing options...
ancullen Posted November 13, 2006 Author Report Share Posted November 13, 2006 I take it that no one has access to this information? Quote Link to comment Share on other sites More sharing options...
Trev Posted November 13, 2006 Report Share Posted November 13, 2006 If its any help the 86-90 & 86-89 GZE had a C/R of 8.0:1 and the 89-91 & 91-95 had a C/R of 8.9:1 Quote Link to comment Share on other sites More sharing options...
ancullen Posted November 14, 2006 Author Report Share Posted November 14, 2006 No, that's no help at all. Quote Link to comment Share on other sites More sharing options...
Trev Posted November 14, 2006 Report Share Posted November 14, 2006 No, that's no help at all. No worries mate, Good luck, Might pay to put it in the FAQ if you find it. Quote Link to comment Share on other sites More sharing options...
ancullen Posted November 15, 2006 Author Report Share Posted November 15, 2006 Was planning on it. Quote Link to comment Share on other sites More sharing options...
Sam_Q Posted March 28, 2007 Report Share Posted March 28, 2007 why do you need to know the cc of the piston to work out the compression ratio change? heres how I see it, you know this: existing compression ratio + stroke + bore and therfore you can easly work out the cc of the combustion chamber from there you just work out the reduced volume of the thinner gasket and reduce that from your chamber cc and re work out the ratio, makes sense? Quote Link to comment Share on other sites More sharing options...
kickn5k Posted March 28, 2007 Report Share Posted March 28, 2007 (edited) I am pretty sure i have a sample of both comp ratio at work, or i`ll try to dig something up off a job sheet if not. Should have something for you tomorrow. stu. Edited March 28, 2007 by kickn5k Quote Link to comment Share on other sites More sharing options...
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