Pit Crew
2.0 and 2.3 dura pistons
Can i use a set of 2.0 high compression pistons in my 2.3?
I know they are the same bore size but is the location and size of the pin the same?
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Re: 2.0 and 2.3 dura pistons
it would seem so, both accralite and cosworth list the same forged pistons for 2.0 and 2.3
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Pit Crew
2.0 and 2.3 dura pistons
Excellent news, seen lots of sets for the 2.0 with a 12:1 cr.
Ill have to just work out the compression ratio, im assuming the bigger 300cc will give a higher cr
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Re: 2.0 and 2.3 dura pistons
yes, it will be around 13.1
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Pit Crew
Re: 2.0 and 2.3 dura pistons
Ok having just compared my 2.0 pistons with the 2.3 a few thing are clear.
The 2.3 rods are bigger in every way, height, thickness and bearings
The pistons and wrist pins appear identical in dimensions
The 2.3 pistons are domed inward and have valve seat cut outs
So the next obvious question is, can i use stock 2.0 pistons in my 2.3 to raise compression without having to spend a fortune?
Does anybody know if its been done before?
can anybody confirm the compression ratios of the 2.0 and 2.3 non-ranger (ive seen many different values quoted online)
Its likely that with my high lift cams ill need valve seats to be cut out but ill cross that bridge when i get to it.
the 2.3 is mazda, not that i think it makes much difference
Last edited by 5tox; 30-09-2019 at 17:44.
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Pit Crew
2.0 and 2.3 dura pistons
Comparison
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Re: 2.0 and 2.3 dura pistons
it would seem likely you can use stock 2.0 pistons in a 2.3 to give more compression, but you will be in trouble with valve/piston clearance if you fit any sort of cam
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Pit Crew
2.0 and 2.3 dura pistons
Yeah im using the cosworth yd0859 and yd0860 with a view to fit the even bigger lift piper ultimate road cams later on.
Will definitely need to look at getting the valve cut outs machined in
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