Discussion
Hi all, after a little advice.
I've an Alfa v6 mated to a honda s2000 6 speed gearbox. All well and good, but no clutch yet.
Unfortunately, the honda clutch disc is a little too small for the alfa flywheel, so my hoped-for "just bolt it together" approach isn't going to work.
Seems to me I've got two options: 1 - get a custom flywheel machined up which will match a honda clutch, and "just bolt it all together".
2 - try to find / get made a clutch which will match the honda input shaft and alfa flywheel.
1 is seeming like it might be easier, since for 2 I'll still have to get the flywheel drilled to take whatever clutch pressure plate I end up with, and gawd knows if it'll all work with the gearbox release arm.
So, has anyone done this sort of thing before? Any advice or suggestions, or pointers for where to go for information, greatly appreciated
I've an Alfa v6 mated to a honda s2000 6 speed gearbox. All well and good, but no clutch yet.
Unfortunately, the honda clutch disc is a little too small for the alfa flywheel, so my hoped-for "just bolt it together" approach isn't going to work.
Seems to me I've got two options: 1 - get a custom flywheel machined up which will match a honda clutch, and "just bolt it all together".
2 - try to find / get made a clutch which will match the honda input shaft and alfa flywheel.1 is seeming like it might be easier, since for 2 I'll still have to get the flywheel drilled to take whatever clutch pressure plate I end up with, and gawd knows if it'll all work with the gearbox release arm.
So, has anyone done this sort of thing before? Any advice or suggestions, or pointers for where to go for information, greatly appreciated
First stop would be to try to get hold of/compare a friction plate from a larger capacity Honda (probably larger Dia but with the same splines) to do the job,(the splines may well be SAE ),your local Honda dealer may well be able to help you,or try Honda Technical,failing that trawling through the net to ascertain the exact spline size/spec then looking through your local friendly motor factors catalogues,there will almost certainly be another plate with matching splines and a larger Dia available.
If all the above prove fruitless then a custom friction plate can be made at a cost.
Another alternative is to have your flywheel redrilled by a reputable/capable machine shop to enable a different (S2000?)clutch cover to be fitted .
Good luck with the release bearing/arm,you may well find that a hydraulic co-axial set up will be the easiest way to solve the problem.
If all the above prove fruitless then a custom friction plate can be made at a cost.
Another alternative is to have your flywheel redrilled by a reputable/capable machine shop to enable a different (S2000?)clutch cover to be fitted .
Good luck with the release bearing/arm,you may well find that a hydraulic co-axial set up will be the easiest way to solve the problem.
Cheers
yes I've been looking at other honda clutches - they all seem to use the same splines, but a larger diameter input shaft.
My original plan was to redrill the flywheel to accept the s2000 pressure plate, but the friction surface of the flywheel is too far out - the clutch disc would be partly unsupported. Hence why I was thinking that replacing the flywheel might be easier/cheaper - nothing need change at the gearbox end - I've found some places which do them, I need to measure up and get a quote.
Good call on the coaxial release bearing, wasn't aware of them, so that could be useful. Thanks!
yes I've been looking at other honda clutches - they all seem to use the same splines, but a larger diameter input shaft.
My original plan was to redrill the flywheel to accept the s2000 pressure plate, but the friction surface of the flywheel is too far out - the clutch disc would be partly unsupported. Hence why I was thinking that replacing the flywheel might be easier/cheaper - nothing need change at the gearbox end - I've found some places which do them, I need to measure up and get a quote.
Good call on the coaxial release bearing, wasn't aware of them, so that could be useful. Thanks!
here's another vote for a concentric clutch as part of your solution
My Midget has a Ford five speed gearbox mated to its Aseries engine and I had lots of problems with the clutch diaphragms breaking when I used it with a lever as original
I fitted a Burton Engineering adapter inside the bellhousing and added a concentric from a Saab, works beautifully
When it comes to mix-n-match clutch and flyweel bits you need to get hold of a catalogue from a clutch manufacturers
Try asking at the local car spares shop if they have a catalogue they are ditching in favour of a new one
A mate gave me his old "National" clutch catalogue and as it lists every car you would imagine and gives dimensions and part numbers it becomes a simple research job to look one out
I'll do a sample one for you
Honda Prelude (my old 2000/1 catalogue doesn't have S2000 parts listed, no doubt because it was new enough to be dealer only parts) cover plate NCK674 diameter , driven plate NHB0248 has 220mm O/D splines diameter 26mm with 24 teeth on it
from this kind of info you can work out the mixers you need
For a V6 Alfa it shows a couple of choices one of which is a full kit only t'other has a 215mm diameter clutch (fitting the flywheel) and from this you work out which suitable Honda driven plate to go for. Take a NHE0337 cover plate and add a suitable Honda driven plate
takes longer to write than to look up
Honda will have several diameter clutches to fit those splines, you may even find a Rover Group plate that fits
have fun
good luck
bill
My Midget has a Ford five speed gearbox mated to its Aseries engine and I had lots of problems with the clutch diaphragms breaking when I used it with a lever as original
I fitted a Burton Engineering adapter inside the bellhousing and added a concentric from a Saab, works beautifully
When it comes to mix-n-match clutch and flyweel bits you need to get hold of a catalogue from a clutch manufacturers
Try asking at the local car spares shop if they have a catalogue they are ditching in favour of a new one
A mate gave me his old "National" clutch catalogue and as it lists every car you would imagine and gives dimensions and part numbers it becomes a simple research job to look one out
I'll do a sample one for you
Honda Prelude (my old 2000/1 catalogue doesn't have S2000 parts listed, no doubt because it was new enough to be dealer only parts) cover plate NCK674 diameter , driven plate NHB0248 has 220mm O/D splines diameter 26mm with 24 teeth on it
from this kind of info you can work out the mixers you need
For a V6 Alfa it shows a couple of choices one of which is a full kit only t'other has a 215mm diameter clutch (fitting the flywheel) and from this you work out which suitable Honda driven plate to go for. Take a NHE0337 cover plate and add a suitable Honda driven plate
takes longer to write than to look up
Honda will have several diameter clutches to fit those splines, you may even find a Rover Group plate that fits
have fun
good luck
bill
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