ok, every one says to get their hands on a gsr bare block and swap a ls crank for the longer stroke for reliability and also the girdle for reliability. Right now I have a ls motor that I am using to makea lsvtec. I also have a blown gsr motor that I am using as a donor. Is it at all possible to transfer the vtec oiling components over to the ls block????? Im already having the girdle machined and dowelled for the block and I am using arp bolts and forged internals, and am getting the rotating assembly balanced. I just want to try to make everything as reliable as possible.

another thing that I am speculating is sleeving to 84mm, around 12:1 compression. Does anybody know about piston to head clearances on this particular setup. I have heard all sorts of similar set ups but noone ever mentions anything about having to have the head matched to the block or deshrouded to make room for the piston.

I know I am asking alot but this is going to make or break my decision on whether or not I go stock bore or 84mm bore.

any responses would be greatly appreciated

thanks in advance,

john

 

If you're going to sleeve it anyway, I would just put the LS rotating assembly into the sleeved GSR block. You can swap the VTEC oiling components over to the LS block, but it'd just be easier to leave them in the GSR block and sleeve that. The VTEC oil pump would go into the LS block easily enough, but I believe there's some extra machining to do if you want to run VTEC oil squirters. Plus, you wouldn't need to have a girdle doweled in if you ran the GSR block.

 

rod went through the side of the gsr block. block is no good otherwise that would be sweet, but on the other hand I wouldn't of got the motor for free either.

 

any insite on the 84mm bore 12:1. you think it will clear without any additional machining. I will be using a b18c1 head, I know they have a little more compression and the cams are a little more aggressive.

 

Depending on the dome configuration, you may have to deshroud the head to have the proper clearance.