Liner O-ring grooves

Message

cannondale27 · #1 Post by **cannondale27** » Tue Apr 03, 2007 1:34 pm

I have seen a few castiron liners with incorrect groove depths.Never saw a defective aluminum one but I bet they are out there.Some 98mm sleeves have different sizes I believe.Anyway if your liner uses stock x-ring and o-ring this is sizes.All are in inch.

Easy E · #2 Post by **Easy E** » Tue Apr 03, 2007 3:25 pm

Have you found the differences enough to cause sealing issues?

cannondale27 · #3 Post by **cannondale27** » Tue Apr 03, 2007 7:59 pm

If groove depth is incorrect it cracks the liner.

Easy E · #4 Post by **Easy E** » Wed Apr 04, 2007 1:59 pm

Ahh, gotchya. So the the grooves are too deep creating a thin spot in the liner....

NRath · #5 Post by **NRath** » Wed Apr 04, 2007 4:02 pm

Nice job on the graphic, 27! Good info, too.

cannondale27 · #6 Post by **cannondale27** » Wed Apr 04, 2007 8:08 pm

Easy E the castones that crack the groove is too shallow.Usually there is about a +.003-.000 tolerance on depth of o-ring groove.If it is too shallow o-ring doesnt have any where to squeeze to when headbolts are torqued.Cracks liner.Good indicator of a shallow one is it wont have radius on thee top corners of groove.

wistech · #7 Post by **wistech** » Wed Apr 04, 2007 8:26 pm

Was that the issue with rogers ATK?