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4g13 upgrading
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<blockquote data-quote="darrengoh89" data-source="post: 4548499" data-attributes="member: 79630"><p>4g13 and 4g15 head is the same! .... only different is the block ...to stroke a 4g13 block to 1.5 is not recommended ...coz you will be facing reliability issue ...the cylinder wall will be too thin ..the max bore size for a 4g13 block without facing reliability issue is 74mm low compression piston ...which it would be 1430cc...if you wanna plonk in a 4g15 block ...then go for it ...don't worry about the head muz skim or not to fit in...no suchthing ...4g13 is a high compression engine is due to the piston ...not the head ...if you want high compression after plonking a 4g15 block ...send your head for high compression skim ..thats it ...in my humble opinion ...do it 1 shot if budget allowed ...do not make it a 2 times job in the end ...do 1 shot as in 1.6 stroker kit and PnP headjob ...</p></blockquote><p></p>
[QUOTE="darrengoh89, post: 4548499, member: 79630"] 4g13 and 4g15 head is the same! .... only different is the block ...to stroke a 4g13 block to 1.5 is not recommended ...coz you will be facing reliability issue ...the cylinder wall will be too thin ..the max bore size for a 4g13 block without facing reliability issue is 74mm low compression piston ...which it would be 1430cc...if you wanna plonk in a 4g15 block ...then go for it ...don't worry about the head muz skim or not to fit in...no suchthing ...4g13 is a high compression engine is due to the piston ...not the head ...if you want high compression after plonking a 4g15 block ...send your head for high compression skim ..thats it ...in my humble opinion ...do it 1 shot if budget allowed ...do not make it a 2 times job in the end ...do 1 shot as in 1.6 stroker kit and PnP headjob ... [/QUOTE]
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