Accelerator pump diaphragm question

[Sharp64]

I am "rebuilding" a 30PICT-1 solex carb. I have a rebuild kit, and yes I know they aren't the same quality as the OG ones, but its what I have. In looking at the AP diaphragm, the one in the carb doesn't have any rips or tears, but it is a different material and rather rigid compared to the one that comes in the rebuild kit. The one in the carb is more of an orangish color whereas the rebuild is black rubber.

Id rather use what's there, but is the rigidness supposed to be like that? When I pulled the other 30PICT-1 apart that I have, it had the same sort of rubberish diaphragm..
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1960 Indigo Blue Ragtop (Blue Barry)
1967 Ghia
1985 Westy Money Pit
“...some men aren't looking for anything logical, like money. They can't be bought, bullied, reasoned, or negotiated with. Some men just want to watch the world burn.” - Michael Caine

[60ragtop]

rigid is not good, it needs to flex. If you search the classifieds there are original solex diaphragms for sale sometimes.
_________________
Rick
Certified Mechanic by the State of Michigan in 1977
ASA certified in 1987
Certified Hunter Wheel Alignment Master Technician 1986

[Sharp64]

[60ragtop]

could be original and the ones in the new kits are not as thick but I've never had any problem with them. install the old one and see if you get a good squirt out of the dump tube.
_________________
Rick
Certified Mechanic by the State of Michigan in 1977
ASA certified in 1987
Certified Hunter Wheel Alignment Master Technician 1986

[EverettB]

I know what you mean about the one on the left, it sort of pops in and out really firmly.

I always thought that meant they were worn out and would crack soon.

I've replaced ones that were like that but it was usually because the cover was leaking, I had assumed it was because the material got too hard to seal.
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[KTPhil]

The rubber hardens with age. If it is so stiff it "oil cans" then it is well past its prime.

One tip I read ages back: Install the accel pump cover somewhat loosely, maybe one full turn loose on each screw. Then open the throttle all the way, and while holding it there, tighten the screws of the pump cover. This ensures the diaphragm is not overstretched at full throttle, making it last longer and giving a more consistent injection.

[Sharp64]

Works for me. I'll just put in the one form the kit.
_________________
1960 Indigo Blue Ragtop (Blue Barry)
1967 Ghia
1985 Westy Money Pit
“...some men aren't looking for anything logical, like money. They can't be bought, bullied, reasoned, or negotiated with. Some men just want to watch the world burn.” - Michael Caine

[GratefulPhish]

Permatex gasket sealer with a new diaphragm or no? TIA

[Cusser]

[GratefulPhish]

That's enough for me, thanks.