Anyone used JBM Industries Diaphragms for the BS38 or BS36?
I put a set of these in, they are too stiff and the slides sometimes don't return like they should. Do they loosen up with time?
I put a set of these in, they are too stiff and the slides sometimes don't return like they should. Do they loosen up with time?
Yep. It's not the slides it's the diaphragms. On the bench with the carbs level if you push them up all the way they don't come back down immediately when you let go like they should. If I run wot then back off quickly to about half it will sometimes stumble because of this. Once things warm up and the material softens it gets better.Did you install the slides in the same carb they came out of?
Did they return ok on the bench? How long have you been running them?Mine are still working great.
Good question. They measure 4.25" extended.Are the slide springs in good shape? The JBM’s in my ‘76 have been working great.
Yep. It's not the slides it's the diaphragms. On the bench with the carbs level if you push them up all the way they don't come back down immediately when you let go like they should. If I run wot then back off quickly to about half it will sometimes stumble because of this. Once things warm up and the material softens it gets better.