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Carb rebuild kits

jaybird

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How do I know which one to order for my carbs? Is there a # on the carbs somewhere?
 
Jay bird, there should be a tag on the carbs. usually under one of the screws that hold the lids on. watch it tho they are probaly not the same number. one should be a front and the other a rear

mark
 
They're HIF4's but it wouldn't be that simple, would it? I'll go look & see what I can find.
 
HA! See? I am NOT a gearhead. I don't know what you mean lids. The screen thing that holds the filters or the lid on the dash pots?
 
item #30 moss
actually the float bowl lid assembly. Note the AUD number this is what your looking for.



mark
 
Ahh, thanks Mark!
(I won't mention I have no idea where the float bowl assembly is...YET!)

Do not tell me, I'll find it.
 
(whew, lotsa parts in there! (moss #30) - we going to be able to rebuild these carbs and stay married? We don't even wallpaper well together.
 
well thats where they should be....... hopefully they are still on the carbs.

mark
 
I overheard some of the guys after the last club meeting talking about rebushing carbs and changing the throttle something or other. Should we do that? Is that part of the rebuild kit?

There's a guy in Bartlesville OK that will do the duals for $200. I'm wondering if that's not a good idea!
 
just make sure they dont look like This .

mark /ubbthreads/images/graemlins/lol.gif
 
Ha bloody ha. I DO know a speaker from a carburetor!
tongue14.gif
 
oops you said HIF. try here instead .

200 sounds like a pretty good deal to me, rebushing the carbs is not part of the kit. Its a separate operation to re ream and install new bushes to remove any egged shaped wear from the carb body it self. it needs to be done correctly is kinda imporant. worn bodies or bushes cause air leaks and poor proformance. makes them difficult to tune and get running well.

perhaps Da hubby and his Buds can do it?


mark
 
I think that is a good idea Mark. And I think rebushing my carburetors is going to be suggested for one of our winter tech sessions! (hoping rebuilding an overdrive is another!)

For the LIFE of me I could NOT find any numbers on the carbs.
 
oh the irony of that HS-4 speaker... it's even MG Electronics! ... *snicker*
 
I just cleaned mine and if you are going to rebuild your own then I would recommend the video on rebuilding SUs. The tape is worth every penny as you can replay what ever you are missing. They are great carbs and are not that hard to rebulid or set back up.
 
Aloha Jaybird,

The guy you mention in Oklahoma, Jim Taylor I'm assuming does great work. His price included all the parts generally and he cleans the carbs up so they look new. He will also include a complete report of what work was done. The carbs are in a ready to install condition when they come back to you, perhaps only minor mixture and idle speed adjustments. He has done three sets of SUs for me.

Unless your club or Da Hubby has tools for machine work, rebushing the throttle shaft may be beyond a DIY job. This is a precision job.

Safety Fast,
Dave
 
Seconded: Align boring new bushings is precision work best left to machine shops equipped for the task. Another good rebuilder is Joe Curto, in N.Y. ( https://www.joecurto.com ). Used 'em for years, they have even found me old brass floats (NLA) for carbs on 1100cc (1098) engines.
 
I don't know the guy's name Dave, but I know he's in Bartlesville. And Doc, I've heard good things about Joe Curto also.

At dinner tonight dahubby (odd how conversations these days revolve around things like carbs and manifolds) was talking like he was just going to send the carbs off to be rebuild and rebushed. By the time we buy the rebuild kit and the video and any other miscellaneous, for a little bit more someone else who is experienced at this can do the work.

Dahubby was a machinist by trade for 32 years, he can do the rebuild and rebush, but I think he'd rather not!!!

Hmmm. I bought the carbs and manifold. Header was given to me. I was going to buy the rebuild kit. BUT...if dahubby doesn't want to do the work, and decides to send it out, doesn't it seem fair that he pays for it?
/ubbthreads/images/graemlins/devilgrin.gif
 
Gad! You're Jaybird's ~Evil Twin~!! What'd you do with the real Jaybird?!?!?

Seriously: 32 years as a machinist more than qualifies him to ream out those bushings in a straight line. BTW: there have been oversize shafts available as well, so's to allow using the old bushes reamed to size. I wuz operating on an assumption: minimum experience with machine tools... Offer dahubby my apologies, and look into oversize shafts next.

It'll be "Baby S**t" for him to do it correctly. Then you could dedicate the savings to JetHot the already *free* exhaust lump. ;}
 
<https://www.chicagolandmgclub.com/home.html>
The article on reaming the carb bushings using an inexpensive reamer is on the Chicagoland MG club's site in the tech area I believe.
This first appeared in the Sept./Oct 2001 MG Driver from NAMGBR. An easy way for the home garage mechanic to accomplish the task.
Jaybird, if the carbs you have are the 71-72 style they have those little poppet valves on the throttle discs.
If so either buy new plain discs or have whoever overhauls them install the older style ones without the poppet. The poppets never seem to work as designed due to the springs weakening and messing with your mixture settings.
 
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