Search found 2147 matches

by IslipMinor
Tue May 26, 2020 4:48 pm
Forum: Mechanical
Topic: mg gearbox
Replies: 9
Views: 146

Re: mg gearbox

That's interesting. The earlier BMC Parts Manual for the Sprite/Midget lists the switch with a change point of 12CC/Da/H12411 on, but nothing shown on the exploded parts diagram, whereas the later BL Parts Manual simply states '1275 Engine' for the reverse light switch with no introduction date!
by IslipMinor
Tue May 26, 2020 4:13 pm
Forum: Mechanical
Topic: mg gearbox
Replies: 9
Views: 146

Re: mg gearbox

The 1098 box and hydraulic clutch were fitted to the MkII A40 Farina. All the parts are the same as the Minor, with the exception of the clutch release arm. I have attached an updated version of the list that Phil shows, and as you can see the ratios on the Sprite/MG version of the box are closer th...
by IslipMinor
Tue May 26, 2020 8:51 am
Forum: Mechanical
Topic: Thread sizes
Replies: 113
Views: 58468

Re: Thread sizes

Don, I cannot say for certain, as ours is 1958, so does not have the dash surround, but it is unlikely that a Unified thread was used originally on the body. There was usually a clear distinction between thread series and application. The body uses the BSF/BSW series, and mechanical uses UNF/UNC. If...
by IslipMinor
Fri May 22, 2020 4:00 pm
Forum: Mechanical
Topic: MGB EGNINE IN MORRIS
Replies: 3
Views: 216

Re: MGB EGNINE IN MORRIS

The B-Series engine is much heavier than the A-Series and produces a lot more torque, which will very likely destroy the halfshafts in no time. The link is to someone who did it, and found, very predictably, that the heavier engine created a lot of understeer, particularly in the wet, which is not a...
by IslipMinor
Fri May 22, 2020 3:50 pm
Forum: Mechanical
Topic: clutch relay shaft misaligned
Replies: 9
Views: 200

Re: clutch relay shaft misaligned

The attached file shows the layout of the front and rear engine/gearbox mountings. The front mounts should have the rounded edge of the large hole facing the rear. The positioning of the front mount is controlled by the 4 mounting bolts, and should not need to be enlarged, elongated or anything else...
by IslipMinor
Thu May 21, 2020 3:35 pm
Forum: Mechanical
Topic: clutch relay shaft misaligned
Replies: 9
Views: 200

Re: clutch relay shaft misaligned

From distant memory (we now have a Toyota 5-spd), if the metal gearbox to crossmember mountings are switched side-to-side, it will position the whole engine/gearbox assembly wrongly - is that right? The rubber mounts are symmetrical, but the metal ones are handed left and right. Might be worth swapp...
by IslipMinor
Thu May 21, 2020 3:16 pm
Forum: Mechanical
Topic: Mystery pipe
Replies: 31
Views: 522

Re: Mystery pipe

Standard BMC closed circuit 10 V Engine The attached file shows the inlet manifold part of the closed circuit system - it is from the BMC Workshop Manual. The bottom of the PCV is connected directly to the inlet manifold and the hose coming out horizontally connects to the oil separator on the fron...
by IslipMinor
Wed May 20, 2020 6:10 pm
Forum: Mechanical
Topic: whining diff
Replies: 24
Views: 255

Re: whining diff

John,

I have no experience of them, but I'm sure there are plenty of other owners who have.
by IslipMinor
Wed May 20, 2020 6:09 pm
Forum: Mechanical
Topic: Mystery pipe
Replies: 31
Views: 522

Re: Mystery pipe

Mike,

Yes if you could get one for £10/15 that would be well-worth doing. When you get it make sure that you flush out the oil separator thoroughly to clear out any muck and debris.
by IslipMinor
Wed May 20, 2020 6:05 pm
Forum: Mechanical
Topic: whining diff
Replies: 24
Views: 255

Re: whining diff

John, That means that you could use the 4.22 carrier as the base for the rebuilt 3.9 ratio, but it will make no difference to what is required to build it - bearings, shims, crushable spacer, thrust washers, seal etc. Also you cannot just put all the 4.22 parts into the 3.9 carrier without setting i...
by IslipMinor
Wed May 20, 2020 5:50 pm
Forum: Mechanical
Topic: whining diff
Replies: 24
Views: 255

Re: whining diff

That would suggest the diff needs rebuilding/resetting and that bearings themselves are not the cause of the whine. Can you check to confirm that neither diff carrier has an oil filler in it? Swapping between diffs is not likely to help as the crucial set up is between the crownwheel and its pinion,...
by IslipMinor
Wed May 20, 2020 5:41 pm
Forum: Mechanical
Topic: whining diff
Replies: 24
Views: 255

Re: whining diff

First of all what sort of whine do you have? You said that over 30 mph the 3.9 whines. Is this at all speeds >30 mph and does it whine on or off load, or both? Also with regards to swapping between different diffs, there are 2 basic types: The diff carrier with the oil filler in it The diff carrier ...
by IslipMinor
Wed May 20, 2020 3:05 pm
Forum: Mechanical
Topic: Mystery pipe
Replies: 31
Views: 522

Re: Mystery pipe

I got that from a diagram online Mike, Can you forward the diagram to me please? In-line A-Series engines need all the help they can get to limit oil leaks, particularly from the crankshaft rear scroll. Running with no form of positive crankcase ventilation will almost certainly lead to oil leaks. ...
by IslipMinor
Wed May 20, 2020 2:33 pm
Forum: Mechanical
Topic: whining diff
Replies: 24
Views: 255

Re: whining diff

the noise is coming from that cage that holds the small gears Running in a straight line the whole diff cage rotates as one, there is no relative movement, so no capability to create any whining noise. Noise will be either the crownwheel and pinion and/or bearings. The typical 'on load' or 'off loa...
by IslipMinor
Wed May 20, 2020 9:57 am
Forum: Electrical
Topic: Replacement Fuse Box
Replies: 8
Views: 262

Re: Replacement Fuse Box

I have fitted 2 additional fuse boxes, behind the drivers side dash (have removed the glove box liner). One for ignition-fed circuits and one for non-ignition-fed circuits. They are out of sight, leaving the under-bonnet 'clean' with the original 1958 connections to the fuse box, but allow the use o...
by IslipMinor
Wed May 20, 2020 8:43 am
Forum: Mechanical
Topic: Mystery pipe
Replies: 31
Views: 522

Re: Mystery pipe

Mike, It is not a connection to the rocker cover, but is a connection to either the oil separator on the front side tappet cover, or if using the 1275 timing cover, the oil separator on that. The rocker cover is only ever connected to the air filter, to provide the source of filtered air into the cr...
by IslipMinor
Wed May 20, 2020 8:25 am
Forum: Mechanical
Topic: Differential oil – which type?
Replies: 7
Views: 166

Re: Differential oil – which type?

Castrol Classic EP90 is GL4, so perfect!
by IslipMinor
Tue May 19, 2020 10:16 am
Forum: Mechanical
Topic: Differential oil – which type?
Replies: 7
Views: 166

Re: Differential oil – which type?

Straight EP90 and no more than GL4 rating. GL5 will 'eat' the phosphor bronze components in the diff itself. I would always go for a well-known oil provider.
by IslipMinor
Fri May 15, 2020 12:46 pm
Forum: Mechanical
Topic: Rear hub bearing carrier
Replies: 5
Views: 173

Re: Rear hub bearing carrier

This is a fastener that I had not included on my 'Thread Sizes' list, and have just done so, BUT I cannot update the same list at the beginning of the 'Mechanical Section' on the Board Index.

Moderators - how can we update earlier posts with later information please?
by IslipMinor
Wed May 06, 2020 10:05 am
Forum: Mechanical
Topic: Identifying 1275 engine
Replies: 32
Views: 685

Re: Identifying 1275 engine

One big advantage of the electric pump is that it primes the carburettor ahead of starting the engine. With a mechanical pump the engine has to be turned over a number times on the starter to fill the float chamber. Probably not a problem with a car that is regularly used, but after a week or so, th...