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Clutch Slipping Questions. Prices For Clutch Installation?

baby34
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baby34 Experienced

baby34

Posted
Posted

hi few questions about clutches

my clutch is dying :D

when i change gears like my gearbox crunches and when i let the clutch go slowly the car like jumps like its about to stall until i fully release it..

Anyway, when im pushin the car in like 2nd or 3rd sometime it cuts out for a half a second like i took the clutch in and out .. (is this slipping)

anyway, pretty sure i need new clutch, does anyone know where in melbourne to get it done? how much the labour will cost?

Anyone know where to buy cheap clutches?

What kind of clutch to get? im running about 180rwkw.. will exedy HD clutch be good enough? ($400 from ebaY)

Moodles2 Grand Master

Moodles2

Posted
Posted
would clutch cause crunching on gear shift?

i have same problem.. not sure if its my gearbox or clutch tho lol.

That would probably be your synchro's in the gearbox, Redline Shockproof Lightweight does wonders for Skyline gearboxes (well masking it anyway, when synchro's are gone the only true fix it to replace them)

Wacky Dee Veteran

Wacky Dee

Posted
Posted

I get gear crunching when changing from 1st to 2nd .... no crunch if I do it real slow. Is this in any way dangerous or likely to affect the rest of the gearbox ?

Out of interest how are synchros for an R34 GTT approx. and how many hours labour to install?

Moodles2 Grand Master

Moodles2

Posted
Posted
I get gear crunching when changing from 1st to 2nd .... no crunch if I do it real slow. Is this in any way dangerous or likely to affect the rest of the gearbox ?

Delaying the shift will save your 1st and 2nd gear synchros, shockproof might help in your case

Birds Grand Master

Birds

Posted
Posted

As a rule of thumb, if all gears are crunching on change it is likely your clutch that is causing it (as per the gearbox not being disconnected from the crankshaft rotating it). If only one or two gears are crunching then it will likely be their individual synchros.

The crunch from 1st to 2nd (accompanied by a lack of this crunch when shifting slow) usually happens when travelling uphill, because the vehicle speed drops faster than normal when you clutch in, resulting in an RPM mismatch. Shifting slower allows the engine revs more time to drop and the synchromesh to catches the correct RPM on the way down. If this is happening on flat ground, however, then your synchros are worn or you are shifting way too fast. It will not put the rest of the gearbox in danger, only the 2nd gear synchro, however too much crunching will eventually wear down 2nd gear itself.

Wacky Dee Veteran

Wacky Dee

Posted
Posted

the 1st to 2nd crunch usually happens only when the car is cold on any type of surface .. if I shift real slow, no crunching. Any ideas how much synchros cost for a R34 GTT ? Hard to install ?

Birds Grand Master

Birds

Posted
Posted

Syncrho will be on it's way out...but it's not that bad if it only happens when cold. Changing oil for a different grade can help the problem. No idea on the cost of synchros mate I'd have to call up one of our suppliers...reconditioning your box which includes replacing synchros shouldn't cost you more than a grand with a gearbox specialist, assuming you're pulling out your gearbox and dropping it off to them.

Impact Collaborator

Impact

Posted
Posted

i get crunch on every gear, and its hard to put in first and reverse.

usually always get crunch no matter how fast or slow i change, although it is less noticable the slower i make the change.

so going by ur rule of thumb posted above.. its my clutch? as its crunching all gears?

also when going real slow, either parking, or going up a hill just after a hill start i get this weird.. grinding sort of noise (with clutch in taking off)

ideas?

Birds Grand Master

Birds

Posted
Posted

Most likely clutch yes. Won't rule out that all your synchros are worn, but it's unlikely. Did the gears all start doing this around the same time or sort of one by one?

The grinding noise is probably your teeth meshing together incorrectly - it's possible that from all the grinding when changing into / pulling out of gear with your buggered clutch, you've worn down some teeth on 1st gear.

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