Good to hear from California! My daughter lives in Sacramento.......
Rust probably not a problem for you and you should be able to find everything you need for the B. Lots of used spares available over here, and I assume also in the USA.
All the best
Ian F
What is this thing attached to the lid with 2 screws and do I need it? '77 MGB
Re: What is this thing attached to the lid with 2 screws and do I need it? '77 MGB
MGCC member
1972 BGT, Blaze, Navy trim, recessed grill
1961 Midget, 948cc, Clipper Blue, Blue trim and weather gear
1972 BGT, Blaze, Navy trim, recessed grill
1961 Midget, 948cc, Clipper Blue, Blue trim and weather gear
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- Posts: 2
- Joined: Fri Mar 25, 2022 4:09 pm
- Forename: Steef
- Surname: van den Brink
- MGCC Member: Yes
Re: What is this thing attached to the lid with 2 screws and do I need it? '77 MGB
It is the "spark advance solenoid", a valve that closes off the vacuum line to the vacuum advance of the distributor. Only in fourth gear is the valve opened by the "spark control switch", so that the ignition time is greatly advanced (up to 12 degrees of distribution!) This is to limit emissions at cruising speed. It has been removed from most cars over time for a variety of reasons.
Re: What is this thing attached to the lid with 2 screws and do I need it? '77 MGB
Thanks for the explanation, clearly a lot more complexity than I ever imagined.
If it was April 1st I would have found it difficult to take seriously!
Many thanks
Ian F
If it was April 1st I would have found it difficult to take seriously!
Many thanks
Ian F
MGCC member
1972 BGT, Blaze, Navy trim, recessed grill
1961 Midget, 948cc, Clipper Blue, Blue trim and weather gear
1972 BGT, Blaze, Navy trim, recessed grill
1961 Midget, 948cc, Clipper Blue, Blue trim and weather gear
Clutch Reservoir
Hi, I have fitted some months ago a new brake and clutch reservoir. However the clutch reservoir is constantly leaking through the cap. Is the solution simply a new screw cap or something different? I have tried a thin washer inside and PTFE tape to no avail. A simple journey of 80 to 100 miles reduces the level from max to min. The cap seems to go on tight but overtight and it slips the thread. It's ruining the paintwork!
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- Posts: 237
- Joined: Tue Sep 22, 2020 9:33 am
- Forename: Chris
- Surname: S
- Location: UK
Re: What is this thing attached to the lid with 2 screws and do I need it? '77 MGB
Are you certain the fluid is escaping through the thread on the cap and not the grommet where the reservoir fits to the cylinder ?
1979 MGB GT
2003 MG TF
2003 MG TF
Re: What is this thing attached to the lid with 2 screws and do I need it? '77 MGB
You probably need to post this in a new thread with a new title.
However, a photo would be helpful. It's not a common problem. I have found though that several of the white plastic aftermarket caps do not fit and cannot be tightened. I resorted to digging out an old scruffy cap which did fit well. I did get a refund from Moss. Still difficult to see how as much fluid as you say could leak out though?
Ian F
However, a photo would be helpful. It's not a common problem. I have found though that several of the white plastic aftermarket caps do not fit and cannot be tightened. I resorted to digging out an old scruffy cap which did fit well. I did get a refund from Moss. Still difficult to see how as much fluid as you say could leak out though?
Ian F
MGCC member
1972 BGT, Blaze, Navy trim, recessed grill
1961 Midget, 948cc, Clipper Blue, Blue trim and weather gear
1972 BGT, Blaze, Navy trim, recessed grill
1961 Midget, 948cc, Clipper Blue, Blue trim and weather gear
Re: What is this thing attached to the lid with 2 screws and do I need it? '77 MGB
Yes quite sure it's coming from the cap. I wrap a cloth around the reservoir to limit the paint damage and after a journey the cloth is damp and just wiping your finger around the base of the cap gives a fluid covered finger.Not_Anumber wrote: ↑Tue Jun 07, 2022 12:36 pm Are you certain the fluid is escaping through the thread on the cap and not the grommet where the reservoir fits to the cylinder ?