Hi all, the previous owner of my 1923 Touring/Pickup sent me all the receipts for the work that he had done on the car during the restoration. I noticed that one of the purchases was a Kingston L-4 carb rebuild kit and a Grose jet. From what I've read on this forum, the Grose jet is bad news, how easy is it to return the carb to its original configuration? Does installation of the Grose jet involve any non-reversible (like drilling or threading) operations that would make going back to original difficult?
There's no changes to the carb. Replacing the float needle and seat (Grose Jet) simply involves removing the carburetor then removing the float bowl and float.
There was an updated version of the Grose Jet a few years ago that was supposed to correct the problem. If you're not leaking fuel out of the carburetor, then it's probably ok.
Thanks for the info. No leaks yet, so far so good! I think I'll go ahead and order a gasket kit and a new stock float needle and seat so that I'll be ready if the Grose jet ever acts up.
Mark it may never give you a problem, I have had one on my touring car for at least 10 years and it has never leaked or not performed properly. I would not fix something that is not broken. Just my 2 cents.
I have L-4 on both cars and have never had a problem, they were rebuilt by Rus Potter.
It's just a few minutes' work. If it were mine, I'd replace it in the comfort of my shop, rather than in a motel parking lot while on tour.
I am probably 1 of the titewadedist persons here,I bought 1,tried it,took it out and have lost it and dont miss it.I only wanted to find it so I could smack the crap out of it with a hammer to save some poor sole the trouble of replaceing it again.
Some leaks come from the gasket around the brass seat.I tried,but dont think it helped,some thread tape around the threads of the last seat I put in a carb.