PR-3 Rods in B20b Vtec motor

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khai_tuan_nguyen

Senior Member
What car did the PR-3 piston rods come from? Also is it possible to use with aftermarket pistons in a crvtec?
 
No- you would need really tall compression height pistons to get that to work with a usable compression ratio. The rods are too short for an LS crank.
 
Eh? You're confusing.

Originally posted by pheonixb16aguy@Oct 8 2004, 08:55 PM
ya but he is using a b20 crank... or are the ls crank and the b20 crank the same?? either way i know that you would have to do like calesta saide get some really tall pistons cause


The B18A/B cranks are the exact same as the B20B/Z cranks. They give the same stroke.

you wont have enough stroke with the short b16 rods,


You will have the exact same stroke no matter what rod you use. The rod length has absolutely NO EFFECT on the stroke length of the engine. It just changes how high the piston rises in the bore at TDC and how low it goes at BDC.

i think you have to use either
b20 rods and b20 pistons
forged b20 rods with stock pistons or
forged b20 rods and pistons
but for your questions can you put stock b16a rods on a forged b20 piston and NO unless you get a custom forged set of pistons made and for that price you could have some ib spec forged rods and pistons for your b20 .. visit www.importbuilders.com for there b20 rod piston combo
[post=400286]Quoted post[/post]​


You could move the pin down in a custom piston, but that would:

1. Cost a lot
2. Make rod/stroke ratio worse

Just buy new rods.
 
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