Longevity of 2.3 Stroker Motors

[TargeT]

Cool, another racing innovation from SBR.

Hal

when i got my 2.3L short block from them they had the oil pick up stud in the wrong place,

but other than that everythign was tq'd down right & all the bearings were the right size...

croshatching looked good etc...


I wouldn't bash any particular vender, they all employ humans, and we (humans) make mistakes, if its important to you, double check anyones work.

 

[GimpyTalon]

The difference is, most humans learn from their mistakes...

While some consistantly screw up.

These guys can't even manage to put AN fittings in a box right, ... build my shortblock? I'd rather have the local SBC/SBF wizard give it a whirl on my 4g63.

 

[Intrusive97gsx]

The rod ratio of a 4g64 2.4L is different than a 4g63 2.3L stroker. The 2.3L stroker uses a 150mm rod with the wrist pin set 6mm higher in the piston while the 2.4L has a taller deck so you can make up the difference in stroke with a 156mm rod. So that means you have a rod ratio of 1.50:1 with a stroker and 1.56:1 with a 2.4L so the 2.3 will put more stress on the bearings and on the thrust sides of the cylinderwalls. I'm not really sure what kind of problems you guys are having but you might want to try coating the bearings and the skirts of the pistons.

Sorry about the confusion but the above rod/stroke ratios numbers are for a long rod 2.4L.

 

[Hal]

How will it put more stress on the cylinder walls?

The angle from wall to rod and from rod to crank is exactly the same as a 2.3

The only difference is the DISTANCE from the wrist pin center line to the top of bore.

 

[TargeT]

The difference is, most humans learn from their mistakes...
While some consistantly screw up.
These guys can't even manage to put AN fittings in a box right, ... build my shortblock? I'd rather have the local SBC/SBF wizard give it a whirl on my 4g63.

I live in alaska... I do what i gotta.

 

[Intrusive97gsx]

You're right about the rod angle, I noticed increase wear on the cylinder walls from my 2.0L to my 2.3L . I figured that some of the side loading I was seeing might also be from the fact that the pistons had a shorter skirt causing the pistons movement to be less stable, but to be honest it should actually reduce friction.