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Mahle cylinder boring

Posted: Sat Sep 09, 2017 7:22 pm
by Bsherrard
Anyone know a shop that can bore my original German Mahle cylinders to 96mm?? Not having any luck finding a place.

Re: Mahle cylinder boring

Posted: Sat Sep 09, 2017 9:21 pm
by Piledriver
European Motor Works or RIMCO.
Getting them packaged right is most of the battle.

Be aware you are not saving money going down that path, the new EMW jugs are also not bad from all accounts.
The potential advantage is the heat cycled/aged jugs should stay round better, as well as wear better..

Also note most motorcycle shops can bore/hone free standing iron jugs, or know a machine shop that can.

Re: Mahle cylinder boring

Posted: Sun Sep 10, 2017 7:19 am
by Bsherrard
Piledriver,
I will check with EMW and RIMCO. Thanks.
Good thought on the bike shops, didn't think of that.
Brook

Re: Mahle cylinder boring

Posted: Mon Oct 09, 2017 4:50 pm
by Bsherrard
Just a quick follow up. Neither EMW or RIMCO would do the cylinder boring. There is a local shop that does jet ski and motorcycles but they wouldn't do them either. Finally found a machine shop that will do them, they have done them in the past but it was a long time ago. They are going to have to fabricate a thrust plate to do the job. We will see how they turn out - might end up just going with the Chinese junk!
This is just crazy - I bet 20 years ago this was an everyday procedure!
Brook

Re: Mahle cylinder boring

Posted: Mon Oct 09, 2017 9:09 pm
by sideshow
Wow, I kinda expected RIMCO to fall off the planet due to all the in-house skill lost over the last few moves.
I also thought this was still a common procedure especially in the bike crowd.

So I guess it is just a matter of hours before the only person on the planet that can afford to repair a car will be Jay Leno.

Re: Mahle cylinder boring

Posted: Tue Oct 10, 2017 3:34 pm
by H2OSB
I have a set of those cylinders and considered both boring the 94s to 96s, and finding workable 94s for the 66mm crank(T1Cs...i think that's what it is), but in the end with Pile's good advice and considering the fact I'm a cheap ass, I decided to hold off to get set of EMW 96 Ps&Cs. Glad I waited...I ended up acquiring a 71mm crank when my son gave up on his T4 dreams.

H2OSB

Re: Mahle cylinder boring

Posted: Tue Oct 10, 2017 3:38 pm
by Bsherrard
I may end up going that route if the boring doesn't work out. I really prefer to keep the German Mahle's - they are nice cylinders!
I guess I could always splurge on Nickies, I mean hey...their only $2,760!!
Brook