gsr or ls crank

94civicoupe · Post by **94civicoupe** » Mon Jan 14, 2008 3:34 am

anyone know how to tell the difference between a integra ls or gsr crank???? thanks

v-tecivic · Post by **v-tecivic** » Mon Jan 14, 2008 3:36 am

im 100% almost positive the ls crank has a longer stroke. otherwise im not sure.

94civicoupe · Post by **94civicoupe** » Mon Jan 14, 2008 3:42 am

no i know that the strokes will be different and that you can't mix crank and different pistons and rods unless you wanna hit a valve ( i think ) but does anyone know how to tell the difference between an ls and gsr crank when looking at them???

Gunmetal Si · Post by **Gunmetal Si** » Mon Jan 14, 2008 3:53 am

i do not think they are marked( ryanA correct me). either way let me know what it is ur trying to do.

94civicoupe · Post by **94civicoupe** » Mon Jan 14, 2008 5:09 am

iam doing a bottom end rebuild and there was already a motor swap done to it before i got it. a ls/vtec swap, and i don't know if he used a gsr crank or an ls crank so i know what type of rods to get for the stroke. you know what i mean, i can't mix up gsr rods with a ls crank. (from what i know)

5thgen · Post by **5thgen** » Mon Jan 14, 2008 6:03 am

ls crank is considered 89mm and gsr is somewhere around 87.2mm

94civicoupe · Post by **94civicoupe** » Mon Jan 14, 2008 3:54 pm

lol, ya i no there difference but anyone to determine it with any markings on them

Spork · Post by **Spork** » Mon Jan 14, 2008 7:10 pm

well... if there are no markings on the crank to help you, start looking at the rods

94civicoupe · Post by **94civicoupe** » Tue Jan 15, 2008 2:13 am

ya i no, i tried that, the only markings on the rod is a R 7 and i don't know what that is

Gunmetal Si · Post by **Gunmetal Si** » Tue Jan 15, 2008 3:09 am

94civicoupe;90639 wrote:ya i no, i tried that, the only markings on the rod is a R 7 and i don't know what that is

if it is a stock rod, it will say pr4 or p72 on it