[SleeperWagon]

First off who on here has done it successfully. I saw one come up in the FS section recently. The LSX and Ford guys have been doing this for a long time with good results and the machine work isn't really too expensive. It looks like you can get ~0.2L out of offset grinding the crank on a 2JZ. Combine this with a larger bore and you could be close to a 3.3L.

So, are you severely weakening the crank to the point that your negating any benefit you would get from the additional displacement? Is there anything special besides the machine work and custom pistons and rods? Does the block have to be "notched" to accommodate the crank? Would you be able to rev high with this set-up or are you going to be limited?

I'd like to hear what you guys have to say so feel free to post.

 

[Wreckless]

Sound Performance has offered a 3.2L offset ground stroker 2JZ for some time. Not a new idea to the Supra world at all.

I've seen vids and build threads of 3.2L offset stroker 2JZ cars making in excess of 1000whp at 8500+rpm.. so clearly they aren't compromised in strength when the process has been done correctly!

I haven't heard of block notching needing to be done on anything based on the stock crank. I could be wrong on that, though.

Obviously any time you increase stroke you are going to be increasing piston speeds at a given RPM. I know HKS recommends a maximum of 7500rpm for their own fully counterweighted 3.4L stroker kit.
But several stroker guys have done upwards of 9000+ RPM consistently without problems or failure. But I'd expect the life of the piston rings to be less than they would be on a stock stroke at those sorts of engine speeds.

As with any high RPM engine build, most of it gets down to how well balanced and assembled the engine is, and whether or not the engine has the oiling system, cylinder head work, valvetrain parts, etc to support that kind of RPM reliably.

 

[SleeperWagon]

Thanks a lot Wreckless. This is exactly the info I was looking for. Anyone else who has actually done one?? I'm contemplating a "budget" build and this would be nice.

 

[Wreckless]

Just contact Sound Performance, they offer complete 3.2L shortblock packages at a very compelling price point, particularly compared to what a typical built 3.0L costs.

Just remember to go for billet mains or a block girdle if you're shooting for 1000whp+

 

[Axoman]

I've ran a 3.2 setup and it works great. No clearancing of the block needed for the crank.

Only thing really different from a standard rebuild is you use a honda journal rod bearing.

I have a complete 3.2 rotating assembly for sale if you are looking to do it, it would be cheaper than getting your own crank offset ground and buying rods and pistons...

 

[Tayousei]

So the stock journal rod bearings will not work? I was also contemplating having this done soon as I'm in the process of a complete teardown and upgrade (goin single, yay). Which Honda bearings would I need then if going for an offset grind to 3.2L?

 

[Axoman]

So the stock journal rod bearings will not work? I was also contemplating having this done soon as I'm in the process of a complete teardown and upgrade (goin single, yay). Which Honda bearings would I need then if going for an offset grind to 3.2L?

Tried to respond to your PM, but your box is full.