Fitted new exhaust and extractors on saturday last week. Started to here what sounded like an exhaust leak from the cat. Let it go as I will be going to an exhaust place soon to get a new cat.
Last thursday dropped the car off at the mechanics. Getting a few things done:
Lightened flywheel
Twin plate clutch (both came together in a kit from 949racing)
Braided clutch line
Slave cylinder
Gearbox oil
Rear main seal
And ask them to check the cat.
Well figured it would be a half day job, dropped it off at 8.30, but didn't get the call to pick it up till 6.30. When I recieved the call, they also asked me if there was a noise coming from the gearbox, to which I said that there could be, but i thought it was the cat. Anyway went down there an picked up the car. Oh an the cat was loose which they had tightened back up. They told me that the reason it had taken so long was because the spigot bearing was too small and had to be enlarged a couple thou. Didn't say anything was just happy to get my car back.
Not even 2 minutes into the drive back home, I heard that gearbox noise they were talking about! It's extremely loud, and only really happens above 2-2500rpm when decellerating. On acceleration there is no problem. I went back the next day and they said it could have been the gearbox oil is too thin, so Monday morning went back and got that changed. (Now I should mention that I don't know when the last time the gearbox oil was changed as that would have been the previous owner that had it done. I did see the gearbox oil a few weeks back when I fitted the short shifter in, and it was grey. I took the gear stick out on the Saturday before it went back in for another oil change, and it was blackish. Haven't checked it since, but it will soon.) So took it for a drive and went straight back in to the mechanic and told him that, that sound was not there before it came in to him and it's still there. He said it's nothing to do with them, as they only changed the oil. Should also add that there is a knocking sound coming from the clutch when idling and a rubbing sound when the clutch is pressed in, figured you get that with a twin plate clutch, but not this loud. I also asked the mechanic about this, to which he said it's the trust bearing, but that came in new with the kit.
So I've been looking at buying a new gearbox, but today I realised that when I'm decellerating and it's making that noise, that there is no vibration in the gear stick. Now I think it's the clutch, and that they opened (enlarged the spigot) too much and that would be the cause too all the issues I have now.
I still have the old clutch and flywheel and they are still in good condition. I figure that if I put that back in and there is no noise that I would be proven right with my theory of where this noise is coming from, but I can't do it myself and can't afford to pay to get it done to find out it is the gearbox, as that would be money to go to it.
Any ideas on what it could be? Or any ways to try and figure out what it could be or to narrow down the list out what it could be?
I am willing to let people take it for a spin or take them for a spin and tell me what they think it is. I will try to come down to garage cafe tomorrow night, if I finish work early enough, if you need to hear the problem for yourself.
Sorry for the long post, but I figured if I said everything about it it may answer some questions and lead to more answers
Evan
