Spoke too soon? S1 odd noise...

[Rich H]

Fusking hell mate! That is one fecked crank if it was supposed to be a woodruff!

Not good at all.

[timmsky]

Fusking hell mate! That is one fecked crank if it was supposed to be a woodruff!

Not good at all.

I cleaned up the pulley from the crank that runs the timing belt:



It is definitely mullered, but it looks to me that with a woodruff key in it, it would form a flat which would mate perfectly with the crank that has the flat on it.

So, i'll order a new pulley and key and as long as the pistons havent mated with the valves, I should be back in the running.

As Robin said, what a bizarre turn of events!

Thanks to all for all the 'live' help today and throughout this saga!

Cheers,
Iain

[timmsky]

This is a better shot of the crank pulley showing where the woodruff key would fit, and if the other lobe was still there, then it would form a flat to mate with the end of the crank:



New pulley
New timing belt
New woodruff key
New hope

Fingers crossed....

[fd]

But there isn't a slot in the crank for the key . . . ?

Someone has been playing at botchitt brothers . . . sorry to see that . . . but at least you now know . . . pish . . .

We can have a look at an old engine tonight at Lawrences and see what it should look like . . . I'll let you know . . .

Fd

[timmsky]

But there isn't a slot in the crank for the key . . . ?

Someone has been playing at botchitt brothers . . . sorry to see that . . . but at least you now know . . . pish . . .

We can have a look at an old engine tonight at Lawrences and see what it should look like . . . I'll let you know . . .

Fd

Thanks.

I'm thinking that the key for the pulley would be a D shape and the flat of the D mates with the face of the crank flat IYSWIM?

The two lobes on the pulley form the rest of the larger D shape, all 3 parts (2x lobes, 1x D shape woodruff key) form the flat that mates with the crank flat?

Is that as clear as mud?

Cheers,
Iain

[Dicey]

New tensioner too may be worthwhile...

Fingers crossed the compression test is okay.

Mike.

[Rich H]

The woodruff should be in a slot on the crank. If it's not a woodruff then it must just be a flat in the pulley and a matching flat on the crank. Dunno wha tthe hole is for in that flat...

Give one of the usual suspects a ring, JPS or Sinclares see if they can help with wht it should be.

[mac]

I'm beginning to think the woodruff key is a bit of a red herring and it's a D shape on the crank for locating purposes - as Fd said we'll know tonight. looks like the slot on the pully is home made.


mac

[MacK]

I'm thinking that the key for the pulley would be a D shape and the flat of the D mates with the face of the crank flat IYSWIM?

The two lobes on the pulley form the rest of the larger D shape, all 3 parts (2x lobes, 1x D shape woodruff key) form the flat that mates with the crank flat?

Is that as clear as mud?

Cheers,
Iain

That scenario makes sense, but what purpose is the woodruff key, in that situation?

Surely a full size flat on the pulley would give just the same result, and easier to make and fit?

[timmsky]

I'm thinking that the key for the pulley would be a D shape and the flat of the D mates with the face of the crank flat IYSWIM?

The two lobes on the pulley form the rest of the larger D shape, all 3 parts (2x lobes, 1x D shape woodruff key) form the flat that mates with the crank flat?

Is that as clear as mud?

Cheers,
Iain

That scenario makes sense, but what purpose is the woodruff key, in that situation?

Surely a full size flat on the pulley would give just the same result, and easier to make and fit?

Yes, i'd thought of that too, but I can't make sense of the combined scenario, I guess we'll know more after Fd has inspectected the spare engine at Lawrences!

Cheers,
Iain

[fd]

Could be the wrong pulley on the engine, could be the pulley has been butchered . . . looks to me like the crank has been machined with a flat on . . . I wouldn't bet my house on my engine (s) being a woodruf or a flat - too many engines recently to truly remember . . . regardless . . . your crank doesn't fit your pulley . . . . . .

I say stick it together with some chemical metal and an old gardening glove . . . only because gaffer tape and cable ties probably won't last . . .

If there's an engine we can look at I'll see tonight . . .

Robin also has my old 1.8 block with pulley attached in his garage . . . I'm not sure I want it stripped for spares (because one day it may turn into a 2 litre K) - but it would serve as a reference to look at today . . .

Fd

[robin]

As far as I can see, there is no woodruff key on the crank for this engine design - checked both parts and engine manual and it doesn't exist. As far as I can see, all the pictures show the crank pulley as having a flat drive.

My guess as to how we've gotten here:

Your pulley has been badly fitted at some point in the past (this much is clear from the fact the the 22mm bolt was loose).

It's been flapping back and forth on the crank and has fretted the crank a bit, but mostly just beaten itself senseless (as soon as there is any play, a lot more play will develop rapidly). The remnants of one flat can be seen to the left of the mysterious slot in your picture; the other half is better preserved, but obviously beyond use. My only guess as to why there is a round section slot cut into the flat is for balancing purposes (the crank is already balanced).

I will check Fd's and McKean's old engines tonight and let you know what I find (assuming I can tunnel my way into the garage).

Cheers,
Robin

[robin]

P.S. Assuming the drive on McKean's old engine is viable, I'll send it up to you - I won't have a use for it in a hurry

[Rich H]

Lets hope that is the only damage, fingers crossed

[timmsky]

P.S. Assuming the drive on McKean's old engine is viable, I'll send it up to you - I won't have a use for it in a hurry

Many thanks Robin, any chance it will have a good woodruff key? ;)

Cheers,
Iain