Interesting, so that's a 225mm, I thought it would be 240mm?
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280z clutch
- Thread starter Rob Gaskin
- Start date
Interesting, so that's a 225mm, I thought it would be 240mm?
yellowz
Club Member
Me too, just picked up a 240mm clutch for a 280Z.
richiep
Club Member
This. My 71' Fairlady ZL currently has a 240mm 280Z clutch in it, along with the matching flywheel. It's all about having the right clutch collar for the particular combination in use.
I'm not sure a 240mm will fit on a 225mm flywheel. AND I seem to remember the pressure-plate hole spacing and number of bolts can be different even across the same size (240mm) clutch.
I went from 225 to 240 and was told I could used the same flywheel but there was a problem. I bought another flywheel and then had it lightened by 4lbs to compensate for the heavier, bigger clutch. Needed the longer collar too.
I went from 225 to 240 and was told I could used the same flywheel but there was a problem. I bought another flywheel and then had it lightened by 4lbs to compensate for the heavier, bigger clutch. Needed the longer collar too.
If you've got a 240mm friction surface flywheel, I *think* it will fit, but you might need to move the dowels and you'll need the shorter collar.
Robotsan
Club Member
I haven't a clue what I've got tbh
But from talking to people, I like the sound of a lighter flywheel. Other than that, I'm clueless as to what I have & what I need, and will require enlightenment from those in the know!
When I went from 225 to 240mm I got a different flywheel and collar. I had the new flywheel lightened by the extra amount that the bigger clutch weighed - about 5lbs I think. Both flywheels weighed the same as standard.
Robotsan
Club Member
I've just been reading up on clutches and flywheels and it seems like only the 2+2s came with 240mm?
But the width of the flywheels seems to have increased over the S30 production time?
Btw, will a 10 or 11lb flywheel be ok with a stock L28? It seems like it will be from what I've read.
But the width of the flywheels seems to have increased over the S30 production time?
Btw, will a 10 or 11lb flywheel be ok with a stock L28? It seems like it will be from what I've read.
I think 10/11 lbs would be too much both for driveability and safety. I don't think an engineering shop would do that much anyway.
Robotsan
Club Member
Ahh I was thinking more of buying a lighter flywheel, along the lines of a Fidenza or something. Can't really find them for sale in many places in the UK though.
Might be cheaper to import from Japan.. if only I'd just been there
Robotsan
Club Member
Hi Jon, just wondering why you said 240mm here? As the item for sale is 225mm? Or did you just mean if my 280z happens to have a 240mm it should still fit?
I'm thinking of going for this 10.5lbs / 4.8kg flywheel from Kameari: https://greenline.jp/catalogue/item...eel+(Large+Clutch+Type)&carcode=S30&fromlink=
Reckon that would be ok? It's much cheaper than anything I can find in the UK or US right now.
Yes, thats what I meant. I thought all 280zs had 240mm flywheels, but looks like I was wrong.
If it turns out you've got a 240 one, I've got a selection of collars I got from @Rob Gaskin so might have one to fit in there.
Robotsan
Club Member
Brilliant cheers Jon. Yeah looks like it was just 2+2s that had 240mm ones.
Ok cool, I'll grab this one then and one of those kameari flywheels then. May as well get a few bits at once though if I'm ordering from Japan.. <rubs hands together>
Huw
Club Member
Clutch cover dowels are in different positions.
Something else I seem to have in my memory is that not all 240mm clutch covers have the same amount of bolts?
Can anyone elaborate?
Can anyone elaborate?
Robotsan
Club Member
Would you guys recommend sticking with a stock clutch for a mildly fast road car, or should I go for a slight upgrade? Just thinking as in the next couple of years I plan on fitted the S13 box, 3.9 diff, a custom exhaust & manifold, triple webers and then getting it ported and polished.. would it make more sense to fit a stronger clutch at that point too, or will the stock clutch be fine for approx 200 bhp? I wouldn't want to make the pedal too firm which puts me off the performance clutches, if indeed they are usually firmer.