tnsxsear1

Will a gsr crank and rods fit into an LS block, and if so, is their any benefit to it? Reason im asking is cuz i have a ls/vtec with 11.5:1 compression, But i just bought a turbokit and want to redo the bottem end. But i have a spare jdm gsr bottom end (cracked sleeve)with crank,eagle rods and arias 9:1 pistons. And was thinking of just stuffing all that into the LS. Thanx for any input. -pJ

tnsxsear1

ttt.

W.Zero

correct me if im wrong, the ls crank gives you the torque, if you put the gsr crank in then youll have less torque. i believe the rods and pistons should work.

Mr. Softee

it would work but id keep the ls stuff.

tnsxsear1

The gsr rods/pistons wil work with the LS crank? Why would you just keep the LS stuff, if the gsr stuff is all forged for turbo? So i shouldnt do it than..

Rusty Shackleferd

Ive done it a couple times with a ls block and a b20 block (using gsr crank & rods)
Everyone has there own personal preferences between the ls and gsr cranks, I personally would chose the smaller of the 2 (gsr 87mm) for a turbo motor.

Bailhatch

why would you pick the shorter stroke for turbo? I like longer stroke hondas for boost

Mr. Softee

just use the ls crank / rods / pistons. sell the gsr crank etc..

the best idea would be to use a gsr block (KS, girdle) and LS crank, spec rods, any b pistons.

Rusty Shackleferd

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bailhatch &raquo;</TD></TR><TR><TD CLASS="quote">why would you pick the shorter stroke for turbo? I like longer stroke hondas for boost</TD></TR></TABLE>

Ive had better experinces with that crank. Ive built two gsr motors one 87mm stroke & one 89mm, both 84mm bore. the smaller stroke motor made power in the top end like a vtec motor is suppose to, the bigger(89mmstr) motor made alot of torque in the mid range, but wouldnt make power past 8000.
I like rpm, and were talking fi motors that are going to make a alot of torque no matter what crank you use.
i'll sarafice a little torque for more top end horse power.
But thats just how i like to build motors and im not going to say its the right or the wrong way to do it. figure it out for yourself like i did.

earl

If you could not make power above 8000 rpm, there had to be something else wrong. An extra 1.8mm stroke could not cause that kind of problem.

Rusty Shackleferd

you could me right, i dont know if its the different rod angles between the two or maybe the head needs bigger ports to accommodate more displacement. I'd like to build a long rod motor with an ls crank and see what the out come would be. Until then I'll just use the gsr crank.