hi guys, i was test driving the car today up and down the motorway and as i was coming off the motorway i pressed the clutch and downchanged and heard a "graunch"? Now i can hear strange noises from the box, sounds like grinding. If i press the clutch pedal it goes away, and it speeds up with relation to engine rpm. Could it be spigot bearing? or Input shaft bearing? I do recall the spigot bearing being a tight fit.

Adam

Possibly the clutch release bearing gone?

Or is that when you press the pedal the noise goes away? can't remember

[Edited on 28/3/12 by Daddylonglegs]

Most likely release bearing has come off the clutch fork or clutch fork has come off the pivot.

its hydraulic so no clutch fork. The noise goes away when i press the pedal. I lift the pedal the noise comes back, it wasnt there before and the noise came suddenly. Hope the oil didnt drop out!

I take it you remembered to fit a spigot bearing in the end of crankshaft ?


if not it is either the release bearing or the fingers on the pressure plate.

Both could be caused by excessive movent of the slave cylinder, in any event the engine gearbox need split to find out which.

A remote possibility is the crankshaft thrust bearing but it is unlikely.

I'd guess release bearing
Its going to need splitting to check it all anyway



Also Did you fit a stop under the clutch pedal ?

What bellhousing do you have?

If its anything like the Raceline one then have you fitted a blanking piece to retain the layshaft

worth having a read of this thread anyway and theres a link to a another thread in there too

http://www.locostbuilders.co.uk/viewthread.php?tid=159976

hope that helps

Patrick

Thanks for the replies guys. I have a raceline one. I had no idea about the spacer needed. I noticed the shaft sticking out and I even cut a hole in the gasket for it as I thought it was normal. I had a small oil leak while driving and I guess being on the motorway it made it worse. I never heard about the spacer before, really pissed off!!! Thanks to everyone for all the help though, really good site this one.

Adam

The spigot bearing becomes loaded when the clutch is depressed so I would doubt if its that. The release bearing is unloaded untill the clutch is depressed so I doubt that aswell. When you depress the clutch the input shaft to the box is not driven so I suspect the problem is internal.
Steve.

Thanks Steve, def sounds like the lay shaft . Anyone here got a v6 type gearbox available?

Adam

quote:

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Originally posted by itsawindupuk
Thanks Steve, def sounds like the lay shaft . Anyone here got a v6 type gearbox available?

Adam

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The lay gear is directly driven by the 4th gear on the input shaft and is always in mesh so it seems to stack up. If it has run like that for any length of time it may be fugged.

I knew about the longer input shaft and cut it down along with using a spacer. It's an early gearbox without the retainer in the front face, it looks identical to a normal sierra box apart from the longer input shaft

would it also explain why i sometimes had trouble finding gears whilst driving, and 4th gear popping out under load?

wait a second!!!! Im using the v6 gearbox and these spacers

http://www.retro-ford.co.uk/shop/content/gearbox-spacer-kit-28-capri-gearbox-drt001

Surely the spacers will stop it popping out?

[img]http://
plate [/img]

looks like that spacer would stop the layshaft so perhaps this isnt your problem afterall

correct me if Im wrong but isnt the V6 a HD box?

Normally yes but it's an early box so no heavy duty

I take you'll be taking the engine and box out then?

Let us know when you do get the bottom of the problem.

Yeah definitely, its really pissed me off as I've only driven 50 odd miles and it was fine. I'll prob remove it Saturday.

Sounds weird but I really hope it's something silly like no oil, as at least it's something simple like a leak