heple1983

I have got a small grind when selecting fifth gear, but my clutch has gone and is slipping quite bad (from about 2000revs +)

Just wanted to know if this is the reason behind the grinding or whether i should have it looked at when it goes in the garage this week when i have the new clutch fitted.

The cars a 1999 Uk Turbo (Standard no mods)

DeanF

iTrader: (1)

Hard to say as the knackered clutch could be contributing to this, If the clutch was fine you would say it was the Syncro, Try this select the gear very slowly & without much load, Does it still gring ?? Now try selecting it faster, Does it grind now ??, If it did not grind when selected slower but did when faster, does sound like a syncro issue also...

Dean

heple1983

it grinds a little no matter how i drive

heple1983

the clutch is being done on thurs i'll get back to u then

Playsatan

iTrader: (2)

I've have a similar problem, see here

http://bbs.scoobynet.co.uk/showthrea...ighlight=snick

Seems common on 99's.

heple1983

cheers sounds like we have the same prob i'll ask the scooby specialist i'm takin it 2 on thurs about fixin it if its still their after the clutch change

RON

Sounds like the nut on fifth's loose!! either fix it, or get a newer box!..... in time.

heple1983

just got my car back after the clutch has bin fitted.

it has a little nick into 5th and the garage said they found some filings in the oil (they wern't brass so he said it cant be the syncro) does anyone know whats involved in fixin it and how much its likely to cost

heple1983

anyone

Fat Boy

Tightening the nut on 5th can be done with the box in car, but it still costs a few hundred quid at dealers - may be cheaper if done while the clutch is being sorted. MY99 prone to this I'm afraid - 3 times on my P1...

scoobyboy

the filings are probably the remains of the 3rd gear washer and sounds like you need new synchros on 5th gear

heple1983

i was told it cant be the syncro coz the filing weren't brass and the sycro is made of brass

scoobyboy

when synchros go they dont usually break up there are grooves on one face that grip on to a smooth face and being slightly conical in shape as you change gear one gets pushed in to the other and eventually grips enabling the synchro hub to turn at the same speed and enable a nice change. when they are gone as to speak there is a problem either with the grooves or the angle that the two faces meet at this then wont allow them to grip to each other and the the hub grates as it goes in. as yours are just snicking as it goes in means they are on the way out usually. but try putting a good oil like syntrax in the gearbox first before you have a rebuild as it might just be the oil is the wrong grade. if you do this and it still does it then it's just starting to go wrong and new synchros will be needed eventually.
im sure some one else can explain a bit better!

Spenny_B

I've got a receipt in my paperwork file that I got from my mate when buying his car (MY98 STi5 TypeR) which had the loose nut prob in 2002.

The receipt is from Surrey Performance:

"Remove Gearbox, check all gears & bearings, cleaned internals"
"Tightened 5th gear stake nut"
"Reassemble gearbox"
"Fitted & supplied lightened flywheel & clutch assy"
8.0 hrs labour
£200

HTH if its the usual nut prob

Spen

Edited to say; per Scoobyboy above, cheapest & easiest 1st step is to change oil for known & recommended grade, can make a HUGE difference.

heple1983

Cheers mate - hopefully its the 5th retaining nut seems to be goin off other peoples probs on my model car.

Prob take it to scoobyclinic see what they say.

oldman

My 2004 XT had the same problem. Grinding got worse when shifting at higher speeds. Bad 5tyh gear syncro and related parts.