increase compression on 4g93

slipar

500 RPM
Senior Member
Thread starter
Apr 29, 2006
500
61
1,528
banting - pj
been running the newly mod engine about 1 week now..
but notice the engine temp slightly high than b4 mod..
is this normal..
sifu help me..
 

slipar

500 RPM
Senior Member
Thread starter
Apr 29, 2006
500
61
1,528
banting - pj
mmm.. any sifu can help me..
temp slightly increase..
is there any other thing to check or fine tune..
or any mistake that i make that make the temp increase..
 

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Hi all,

Looking to increase CR on my mirage. Currently on SOHC 4G92 head & 4G93 block with Toyota 4AG-ZE low compression pistons. Previous owner's plan was to turbo the car but dint get around to do it. I would like to keep it as NA and planning to bring CR to 10.5/11:1, RON 97 with Unichip piggyback.

1 - Will I be able to fit in 4G92 Mivec pistons to my 4G93 block with ease? Will the pistons be able to clear and not knock into the valves?
2 - Will I have to skim the block?
3 - What...
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