Cutting the crank on a turbo engine

[Deeznuts]

My Crank has been welded on and cut down .030" should i use it or invest in a stock one (7m-GTE 1990)

 

[jdub]

I'd get a one that hasn't been turned yet...try to find a 7M crank (vs a 6M found on pre-'89 and some '89 motors. The 7M crank is a little heavier, but it's better balanced.

 

[Tim]

your crankshaft has been welded and then cut to .030".:nono: I would definately not use that. Usually they weld cranks to get them back to standard size, but if yours was welded and cut to get it to .030 then no way man, don't use that.

 

[suprarich]

Why was it welded, was it welded on the mains or the rod journals. Who did it? Is it still straight?

 

[Adjuster]

I think that adding hard chrome plating is better, then machine it back to OEM specs.

Contact Crankshaftspecialist.com for details.

They did my stroker crank, and it's holding up fine. (Welded up for more stroke, then machined to 327 Chevy V8 rod size.)

You would need custom rods and pistons to make your own stroker, but going with the plating on a stock crank would work just as well.

It is not low cost however, but it's superior to stock when your done. (They basicly add layers of very hard metal at the journals, and then machine them to stock specs. The softer forged crank material retains the ability to twist and absorb shock loads while the very hard journal material keeps any wear issues away, but does not make the entire crank brittle from being so hard.)

 

[Selz202]

Contact Crankshaftspecialist.com for details.

Link doesn't work anymore.