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Want to find: good crank grinding in NE IL or SE WI

Posted: Wed Nov 08, 2017 7:38 am
by fordboy628
Looking for QUALITY crank grinding service in the Chicago, Milwaukee, Rockford triangle. MUST be able to grind a decent radius and maintain stroke. Mostly 4 cylinder applications. Anybody have any shop they would recommend?

Re: Want to find: good crank grinding in NE IL or SE WI

Posted: Thu Nov 09, 2017 3:06 pm
by williamsmotowerx
262-268-0040 Jeff St Peter. Give him a call

Re: Want to find: good crank grinding in NE IL or SE WI

Posted: Fri Nov 10, 2017 2:41 pm
by fordboy628
Thanks, I'll give him a call.

Cheers

Re: Want to find: good crank grinding in NE IL or SE WI

Posted: Fri Nov 10, 2017 5:41 pm
by PackardV8
and maintain stroke.
When an accurate crank is wanted, it's best to discuss and have the shop agree to the max allowable variation in stroke and indexing. It's incredibly tedious to get it on the money. Another factor, there is a surprisingly high percentage of V8 cranks which can't be brought in close on both stroke and index. Many will take more than .030" to get them all the same, essentially scrapping the crank after much machine time.
Mostly 4 cylinder applications.
I've been told most import 4-cylinder cranks, are both a much simpler piece and more accurate from the factory and thus usually easier to get on stroke.

Re: Want to find: good crank grinding in NE IL or SE WI

Posted: Sat Nov 11, 2017 7:20 am
by fordboy628
PackardV8 wrote:
Fri Nov 10, 2017 5:41 pm
and maintain stroke.
When an accurate crank is wanted, it's best to discuss and have the shop agree to the max allowable variation in stroke and indexing. It's incredibly tedious to get it on the money. Another factor, there is a surprisingly high percentage of V8 cranks which can't be brought in close on both stroke and index. Many will take more than .030" to get them all the same, essentially scrapping the crank after much machine time.
Mostly 4 cylinder applications.
I've been told most import 4-cylinder cranks, are both a much simpler piece and more accurate from the factory and thus usually easier to get on stroke.
Thanks for the input. I would agree that there are lots of cranks out there that are . . . inaccurate. IMHO, because they are NOT checked, at any stage of engine build. What I am running into is an attitude problem: "This is how we do it. If you don't like it, too bad" Unfortunately, these are the same type of folks who do not think that a radius dresser is something they should use, even if their grinder has one. Why they would think a radius is "unimportant", is beyond me.

Most of the time, I am using a billet or other aftermarket crank for the stuff I'm doing. But I have about 15 Ford 2.0L cranks that are stock "take-outs" that I want to prep for SCCA type racing. Can't do it without grinding .25/.25 u/size, hence the search.

Yeah, I could ship the batch to one of the larger crankshaft specialty manufacturers, but the cost would then exceed any "market value".

At my age, I gotta be able to make a few bucks on these types of deals, or it's not worth getting up off the couch . . . . . .

Thanks for your thoughts.

Cheers

Re: Want to find: good crank grinding in NE IL or SE WI

Posted: Sat Nov 11, 2017 6:02 pm
by Dave Koehler
thoughts when vetting a crank grinder.
1: make sure they understand you are not after a throw it out the door budget grind. Be willing to pay for the time.
2: Someone that does diesel cranks is more likely to be up on the radius game. Diesels break without the radius being righteous.
3: Either should have a tool to measure actual stroke and I don't mean the numbers on the crank grinder itself.
In fact you may want to find out where your strokes stand before making any visit. You may find that the strokes vary from the factory.
4 poppers are generally better than V8s. The point is that some may be long and some short. If that is the case you often have to settle for a finish stroke somewhere in between if you want to take the minimum metal off of the rod journal.
4: You may want to politely ask to see their stroke checking tool
should look like this. If they deal with longer strokes or diesel the legs will be longer.
If they hesitate or don't have one move on to the next guy.
FWIW some use dial calipers with a similar stand. Dial calipers suck as far as accuracy.
You may want to buy your own tool if you do enough of this stuff. Makes folks toe the line within reason.

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