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MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG TD TF 1500 - H4 Carb Cover

Darn it all
My Saturday project on the TF was to clean the air filters and fuel filters and adjust the carb air/fuel mixture. After cleaning the thimble filters in the carb bowl covers, I stripped the thread in the front cover!! Yes, the WSM says "take care not to overtighten". I SHOULD have had new fiber washers to take care of the expected seepage. *%&!?!
Order phoned in to Moss, but I thought I'd ask....

Does one of you have a spare H4 float bowl cover, front carb??
When I do get my replacement, what tips are there in preparing the banjo bolt and the fiber washers? Is there call for any particular thread prep on the banjo? Should the new washers be soaked in anything in particular, or installed dry?

If you have a cover, please email me.

Thanks
Tom
'54 TF
Tom Norby

Tom-
That is a very large thread and it is very difficult to overtighten it to the point of stripping; more likely to break the float bowl arm at the bottom. All of which means the damage was probably done long ago. The usual start is the bolts seize in the covers, and heat plus extreme force is used, which partially tears the threads out of the lid.
I use Lubriplate on the threads, and washers, and I soak the fibre washers in oil while I am rebuilding the carbs. I rarely to never replace the washers between rebuilds, and I never have leaks. The banjos are recessed one side, and that side must go toward the bolt head, with the flat side toward the lid. Otherwise you usually cannot tighten them enough to stop leaks.

FRM
FR Millmore

Tom, the two washers should have different o.d. requirements. The banjo bolt fits into the banjo. The o.d. of the washer in that location MUST be small enough to fit inside of the banjo. The o.d. of the washer that goes between the banjo and the cover doesn't matter. If you put a larger o.d. washer into the banjo you'll quite possibly strip the threads trying to stop the leak. Bud
Bud Krueger

Bud=-
Original washers are identical, no comment on repro, but Tom would do well to note the implications of your info.

FRM
FR Millmore

Thanks guys
I am well aware that the banjo washers are different sizes. That was not the issue. I've done this job before. They are correctly placed.
I merely overtightened the banjo bolt and that damaged the threads.
This was a quick off/on to clean the thimble.
FRM may be correct that damage was done long ago.
Lesson learned.
Still hoping someone has a good used cover. That way I can return the new one to Moss. Nothing on ebay now.
I have new respect for the critical nature of the fuel line to bowl cover connection. There is pressurized gas being delivered. The fitting needs to be opened every few years to clean the thimble filters. Cannot have damaged threads there.

Tom
'54 TF
Tom Norby

Tom; Can you post a pic of your cover? May have something in the parts bin-need a pic to help me compare.Dan
Dan Craig

Thanks Dan
Here is a photo. It has the SU number 1160 on it.
The banjo fits to the right of center.

Tom
'54 TF


Tom Norby

Tom - Wish you had contacted me before ordering a new cover, I have a helicoil kit for the banjo port and the proper gaskets If you want to repair you old cover as a spare, contact me at SUfuelpumps@donobi.net Cheers - Dave
David DuBois

Tom

I have an 1160 cover. The little pin is missing the spring inside, but is there, It also has the lever and the jet.

Send me an address off line.

rgt3000 at fuse dot net


RG Taylor

Tom; Looks like you are covered-pun intended-lemme know if you still need me to scrounge. Dan
Dan Craig

Thanks for all the assistance, guys.
Dave B offers a very economical repair, see above post.
I am sure others will do what I did and overtighten that banjo bolt. I can see that it is good to have a spare carb bowl cap after this.

Tom
'54 TF
Tom Norby

This thread was discussed between 09/06/2012 and 11/06/2012

MG TD TF 1500 index

This thread is from the archive. The Live MG TD TF 1500 BBS is active now.