I have a 95 LS. Ive read on a couple places that I would be a lot better off doing LSVTEC if I was using a GSR Block with LS crank and rods. It already has the oil squirters, the head will bolt right up, its got the internal oil passages, and its got a stock block girdle. Does anyone know or see any problems with doing the GSR block with LS rods and pistons. Im going to get a GSR block and get some forged rods and pistons. Im going to built it up slowly because I have the money for the block but not anything else. What are your opinions and such. Im just getting the block with no internals(gsr crank or gsr rods). Im just going to find another used ls crank. Then sell my engine swap to help pay for the one im building. Im also planning to use a b16a tranny.
Thanks for any help or opinions

 

to tell you the truth, one of the things that alows the gs-r to get those higher rpm's is the rod stroke ratio. it doesnt bare so much pressure on the cylinder wall. but if you do it right, the ls combo in there with a crazy compression like 12.0:1 or something like that will make that motor scream. But say you setup was stage three cams (your choice of good brand) new valve springs and retainers. Then you get that high comp with the ls stroke in it, thats a very potent motor.

 

Well Ive heard of using longer rods and moving the pin up in the piston to help we rod to stroke ratio. Also I dont rev the crap out of my engine or try to race people everday. And another thing is Im going to use aftermarket pistons and rods. I want to have a CR of about 10:1 maybe lower. Sometime In the future I want to run a supercharger on it. Ive heard another thing is that it has rods that weigh in around 520 grams then the ls rods are like 580. Then they said the GSR rods are shotpeened. Im going to do a full built like forged rods. I decided on high silicone forged pistons. I might have the money for some skunk2 stage 2 cams thats what I want to use if I do. Its going to be a street car so I dont think so on the 12:1 cr part. Also will the LS crank work in the gsr block and fit properly and everything? Which Main bearings do I use? Another thing Ive thought bout is using a deck riser or whatever its called. That you put between the head and block to raise it up so I can use longer rods.
Thanks

 

you can run 12 to 1 if you would like as long as you dont abuse the motor, which you said you wouldnt. if you are going to supercharge, wiy put a longer stroke in it. the shorter stroke is so much more boost aplyable as far as stock sleeves go. now if you are going to sleeve it then go with a freakin stroker kit if you would like with boost. its up to you and what you think the smartest decisions are but the ls crank will work wit ls sized rods.

 

Ill just build a stock gsr. How much boost with a supercharger can I run. I was going to use Eagle H beam rods and about 10:1 compression with some high silicone forged pistons. A block guard also
Thanks

 

Don't bother with swapping rods, crank, and crap... the LS's displacement advantage is tiny. Not worth it.


If you want forced induction, forget VTEC and turbo your LS. You'll make a lot more power and save thousands of dollars.

 

ls turbo :thumbup:

 

Yeah, most definently. I did not know you had a ls motor already. if i were you, I would not go with supercharger due to the fact that boost is addicting and torque off of the line in a front wheel drive is not good. auto cross people even do turbo setups because turbo lagg has been made so minute now that there is nothing to care about in that area. anyhow if you already have a ls then just slap a turbo in there and tune it and call it a day.

 

Well check this site out http://www.cse.uconn.edu/~yelevich/turbo/turbo.html

The reason I was wanting to build a GSR is because I can sell my ls swap and put it in another civic for around 2000-2500. Then I got 500 saved. So I thought I could get a block for around 300 or 400 on ebay theres on there right now. Then I looked and forged rods and pistons together were like 600. Then a guy in florida is gonna sell me a complete b16a head. I think all together just the motor rebuild was around 2000 then the 500 or so I was going to use for a clutch flywheel and tranny.

If I get a turbo I have to buy a bunch of extra stuff that I would have to come up with the money for.

 

I also have a freind that has a wide band 02 sensor I can use. Then I planned on using the apexi safc. Any other opinions