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I have a cylinder that I would like to use but has a hairline crack in the liner right in the middle of the bridge.
Will the crack cause problems? I would think that if it had proper bridge relief it wouldn't- hoping to hear some other opinions.

PM roostious maximus...he'll set you strait

mine was that way for a long time until resleeved. someone had ground a slight chamfer on the crack to be safe I guess. didn't seem to hurt anything.

Just like what you got there- thanks for getting back to me.

i hacked it out

yeah, I'd just remove it

I remove the complete bridge on my new race porting.Glen

Does removing the bridge mess with the longevity of the cylinder/piston?

not sure, prob not if its done right.

ive noticed it happens on bores 90mm and over. ususlly when it gets bored over the scollops it cracks. its an observation ive noticed, maybe cos the metal bore thins out too much or something.

on that picture you show there, it looks like the rings have worn out on the bridge causing the blow by above it

nmdesertrider wrote:Does removing the bridge mess with the longevity of the cylinder/piston?

Cylinder no-
Piston yes- Exhaust side rings smear and stick eventually.

We've been testing two years and have had little problems with removal of bridge.The thing is you have to know how much and where to size the exhaust port to much excessive ring wear not enough loss in top end,just right Rings and piston under normal riding should last a long time.Even Honda say's own a stock engine change rings after 6 races,And a new piston when mesurment are out of spec. Glen

Not sure what "normal riding" is...

Show us the exhaust port. Boy don't let 100 see that piston heal for sure say it has been hitting the head.Glen

glen howell wrote:Show us the exhaust port. Boy don't let 100 see that piston heal for sure say it has been hitting the head.Glen

ive never had a problem with petes work, nor have i ever heard of anyone having a problem. if i hear of a problem ill be the first to post it up.

The piston appers to be smered all around ,The top ring is stuck way around. Show the exhaust port, I like the Idea of no bridge it works for us and most race engine porters.Glen

my '86 engine is bridgeless, you gotta make the port easy for the ring to come onto, not flat accross it. no probs here, stil got all the squeeze and its faster than my other stuff

As the CBers say 10-4 GOOD BUDDY .Glen

Slomo wrote:Not sure what "normal riding" is...

Doesn't look like you know what "normal roller-blading" is either:

Slomo@TheBeach