View single post by redracer
 Posted: 11-26-2025 12:54 am
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redracer

 

Joined: 09-10-2012
Location: BROOKHAVEN, Georgia USA
Posts: 681
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 Super late to this thread, but noomg might be correct in Grose Jets made lately. I used to order 400 at a time and NEVER had a problem with them(UNLESS one lets their gas sit for a long time which builds "varnish" on them). I have not ordered anymore since the '90s, so if many vehicles are "having problems with them" , then noomg may be correct.
Mr. "dig"; the GROSE jets are to be installed with the fiber washer ONLY, until you can just see the edge starting to deform. An aluminum washer on that fiber one will NOT have enough pressure and will likely leak.
As for a bit of history, the original needle valves were brass-on-brass; eventually, the brass needle would get a "dent" in it and not seal. The replacement for them years later were/are the ones with a ??neoprene?? tip on the end of the needle. I have hundreds of them, but have no idea how long they will last since I don't use them(however, I carry a few spare im my travel tool kit just in case!)
happy T-Day to you, bruce/RedRacer