I still am fighting the weeping issue with my 6453S Thermoquad.
I've checked the plastic bowl and it appears to have the dreaded warp issue.
I recently picked up a 9100S and would really like someone really knowledgeable on this carb if the plastic bowls are interchangeable. The 9100S while awfully dirty, does have a nice straight bowl.
Much appreciated.

Graham

I would go ahead and say yes. The carbs, while two years apart, share the 1 1/2" primary size. The 6453S being a 360 carb, and the 9100S is a 400 carb. I have swapped the phenolic centers between 6xxx and 9xxx series carbs successfully, provided the bore size is the same between the two. Double check the centers visually, and verify similarities and give it a shot. Make sure the jet wells are not leaking as well