I have to select some 84mm pistons.

I'm curious would the shelf pistons made by JE specified for the B20 work with the GSR rods?

This is going in my 2.0L block using the GSR crank. If it wont. Can somone tell me what would be a good setup to run.

 

Bump to the tizzle. Help him out.

 

Do you have any preferable brands for pistons? I know several different companies make custom pistons. Hell you could probably get CTR style at 84mm custom made for you.

 

To answer the B20 / GSR rods question... the B18C engines (GSR==B18C1) have 17.5mm wide rods, and the rest are 19.5mm. So... pay close attention.

Mark

 

I've been curious about the IB Spec Weisco pistons. They come in 84, 84.5, and 85 mm bore. Have you heard anything about them?

 

Je 4.8 cc ones work well. I ran them and they have super deep valve releifs. I was at 0 deck with a .040 gasket with toda b's and had no clearance issues. They were also 13.1 in my motor because of welded combustion chambers and i was running on 94 oct.

 

Just curious, why destroke your engine? It's still gonna have B20 sleeves which are notorious for breaking unless resleeved. Why not put an LS crank in your GSR bottom end, this seems to be the most reliable way to do an LSVTEC. Or why not buy an LS block, resleeve it and go from there, much safer and more ability for further manipulation of the block later. Like I said, just curious.

 

Wiseco has some good 84mm pistons that fit onto the GSR rods.... we used them in a customer's B20-VTEC setup and he's been happy with them. Approx 12:1 compression. BTW, if you use a GSR crank and rods, you're not really destroking the B20 setup... well maybe by 50-75cc but it's negligible, and not like putting a B16 or B17 crank into the B20 block, and dropping that down to 1.8L, where as the GSR crank still keeps the motor around 1.95L