Thread: Fitting a Tomei 91MM Stroker Crank

I've seen a few threads on boring & sleeving can't find the answer to this question.

What work has to be done to the block to fit a Tomei 91mm stroker crank & rods?

If you already have an 8cw DE crank & cradle in there, will it make the job easier, harder or no different? In other words, is it easier to start with a new block or is there an advantage in already having an 8cw fitted?

IF you're increasing the stroke, without modifying the deck height, wouldn't you need shorter pistons? IDK, just asking for personal knowledge.

Indeed you do, I think you raise the pin by 2.5mm.

It's the actual block itself that I would like to know about. You have to modify the sump for a std 8cw but do you have to do much more for a stroker, specifically a Tomei stroker.

there are block mods that are needed, i believe tomei has the info on there website

Thanks, I had a look but I guess it's all about which block you have as to what is exactly needed. I'll have a chat to my engine builder at some time & see if he's done any Tomei stroker engines.

you have to shave down the girdle and inside the block so the crank will have clearance when it is rotating.