1985 120hp cracked bowls

[tal]

I have found 2 bowls cracked around where the needle valve seat screws in. I think the best thing is to replace all 4. I don't know if I cracked them or if they were already cracked and I didn't see the hairlines when I rebuilt them because of lighting conditions.

Questions is, are there any places prone to cracking on the upper body of the carb? I looked them over but I didn't see any. I need to go over them really good again. I'm hoping those aren't cracked because they're really expensive.

Also, I turned up a thread where someone had to replace the bowls on another hp and they said the bowls are now aluminum and thread pitches aren't the same as the plastics. Sound right?

 

[mikesea]

Re: 1985 120hp cracked bowls

there are possibilities anywhere there is a screw and the pickup tube can become loose,especially if someone soaked the carbs in a carb solution,the plastic carbs should not be soaked in the strong carb solution

 

[Faztbullet]

Re: 1985 120hp cracked bowls

Maybe for the crossflow engine but never seen a aluminum bowl on a plastic body carb. There are plenty of used bowl out there so shouldnt be to hard to find replacements..

 

[tal]

Re: 1985 120hp cracked bowls

Thanks Faztbullet,

I did soak the carbs for only 30 minutes a piece. I don't see cracks anywhere in the uppers, so I think they're fine. I went ahead and ordered 4 new bowl chambers just to be safe. I'll make sure the hardware is screwed in appropriately to not cause cracking.

I had another thread about having issues getting the outboard to idle. Someone pointed me in the direction of the manual choke (red) lever. I believe this might be the culprit along with cracked bowls. I'll pickup where I left off after I get the new bowls on.

Thanks.