More aluminum warpage problems

[Rick Prentice]

Hello all. Not only do we see signs of warpage on the carbs, but I just noticed alot on the back sides of the rear seal housings. The housing on the left was just bored to accept the new seal for GaryS, and I noticed the housing wasn't setting real flat on the jig. Sure enough, I had to flatten things out. The housing on the right, I just touched the high spots to magnify the areas to proove my point. We're talking about .015 or more. I wonder how many oil leaks from these areas and are blamed on the seal instead. Here's another jig to make, Don McCombs or Lurker

Rick

[Don McCombs]

Well, Rick. Go ahead and make one. We'll try it out at Cubfest Northeast.

[George Willer]

Rick,

That treatment will show similar results when applied to the carb to manifold flange. I guess that many of our parts were over-tightened over the years. No big deal, but we should be aware.

[John *.?-!.* cub owner]

Just put a glob of gasket compound on it. Sorry, I couldn't resist.. I haven't cheked it for warpage, but the retainer (R2 series) on the eingine I just got from Ralph was leaking under the gasket. I may also have the same problem.

[Lurker Carl]

The rear seal housing is probably easier to straighten than the carburetor - no idle tube and venturi and float protuberances to worry with. Still, that's a much heavier piece of metal to warp like that.