8 replies to this topic

[Sterling M]

I have a flywheel that the timing marks (TDC 1/4, 5, 10) are away from any of the pressure plate mounting holes.
I'm trying to locate the correct position of the assembly marks on the flywheel to align the factory 'A' marks that are on the pressure plate and the spring plate.
All my reference books indicate the 'A' marks should be lined up with the timing marks hole, but since they occur half way between two of the pressure plate mounting holes, I have two choices, what is the recommendation in that case please?
All other mountings are correct, the crankshaft to flywheel washer etc is correct and the timing marks line up when the motor has cylinders 1 and 4 at top dead centre. It's just the holes for the 'A' marks that doesn't line up.
This is an Australian built BMC 998 1967 build.
TIA.

 

[nicklouse]

Put up a picture. So we are not guessing at what you are looking at.

[Spider]

That sounds like an earlier flywheel, 2 piece.

The stampings can be very hard to see, on the flywheel, they are usually on the edge, just above the ring gear. Usually on these flywheels, it's the window that's opposite the timing marks.

Having said all that, given it's age and reasonable likelihood of being mixed since leaving the factory, you'd do well to have the flywheel assembly balanced. If you don't yet have the bottom end assembled, have it all balanced.

[Sterling M]

I've managed to draw on the photo so you can see the timing marks at the top and where I've located the assembly marks 'A' to the left of the timing marks. 

Attached Files

•  Flywheel Modified2.jpg   80.58K   2 downloads

Edited by Sterling M, 29 August 2023 - 09:13 PM.

[nicklouse]

I've managed to draw on the photo so you can see the timing marks at the top and where I've located the assembly marks 'A' to the left of the timing marks. 

Nah no image.

[Sterling M]

Sorry, had some fun getting it small enough!

[nicklouse]

Mmm I can see why you are asking the question. That is just wrong.

Here is an image of an after market flywheel marked up correctly

 

i would say yours has had the marks removed during a lighting session and then put back wrong.

what is under the white paint? Can you pop the cover off? 

[Sterling M]

I put the pressure plate on top as a comparison.

I have just striped it down again and had a really close inspection at the hole opposite the timing marks and there looks like what could have been part of the letter 'A'(?)

Attached Files

•  Mini Flywheel reduced.jpg   72.17K   0 downloads

Edited by Sterling M, 29 August 2023 - 11:35 PM.

[Sterling M]

On further inspection I have located some centre punch marks on all three parts which does not line up with anything else, tempted to go with these marks as at least the are on all three parts, what do you think please?