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Old 03-02-2020, 07:57   #1
zookermaa
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Evo 5 build 2LR or 2L

Hi!

I just rebuild my evo 5 engine. Power target about 500hp, and main question: Are long rod or forged 2l better option. Do i need block machining if i get long rod kit? And how about pistons height it must be lower in long rod? Its that right?
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Old 03-02-2020, 10:31   #2
Arronevo8
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Go long rod revs nice and less thrust on cylinder walls. No machining required on block with std throw crank.
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Old 03-02-2020, 11:55   #3
Mark Shead
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If you go long rod make sure you don’t get stroker pistons and ruin your compression ratio. Seen too many done like this.

Mark
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Old 03-02-2020, 13:38   #4
zookermaa
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Okey, is this https://www.rosssport.com/Brands/CP-...COMP-RATIO-9-5 or https://www.rosssport.com/Brands/MAN...h-20l-Long-Rod piston good choice? How i can know that it is not stroker pistons?��





Quote:
Originally Posted by Mark Shead View Post
If you go long rod make sure you don’t get stroker pistons and ruin your compression ratio. Seen too many done like this.

Mark
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Old 03-02-2020, 14:25   #5
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Quote:
Originally Posted by zookermaa View Post
Okey, is this https://www.rosssport.com/Brands/CP-...COMP-RATIO-9-5 or https://www.rosssport.com/Brands/MAN...h-20l-Long-Rod piston good choice? How i can know that it is not stroker pistons?��
Ask your tuner
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Old 03-02-2020, 15:58   #6
Mark Shead
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Quote:
Originally Posted by zookermaa View Post
Okey, is this https://www.rosssport.com/Brands/CP-...COMP-RATIO-9-5 or https://www.rosssport.com/Brands/MAN...h-20l-Long-Rod piston good choice? How i can know that it is not stroker pistons?��
For best results Grant is correct you are best to get your trust tuner to sort it out for you.
First you would need to know the bowl size to know what compression you should be aiming for.

Mark
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