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About to drop my clutch due to a chatter and cannot find anyone to resurface the Intermediate Plate if required. Can anyone recommend a machine shop that could handle this. Most do flywheels but the opening on the IP is too large to mount on there machines.
Thanks
About to drop my clutch due to a chatter and cannot find anyone to resurface the Intermediate Plate if required. Can anyone recommend a machine shop that could handle this. Most do flywheels but the opening on the IP is too large to mount on there machines.
Thanks
928 International sells resurfaced intermediate plates....might be easier than finding someone to do yours.
Keep in mind what I have been writing about with "hot spots" on clutch pieces. You can never get rid of those black "metal altered" hard spots.....the cast iron has actually changed to a harder material, very deep into the metal. Resurfacing them "hides" the hardened hot spots until the clutch discs touch the newly resurfaced material a few times. The hot spots come right back.....they are there, forever.
Carl at 928 Motorsports is offering "rebuilt" intermediate plates, in which he is having the entire plate changed to new material. I'm not sure if the new plate is cast iron or steel or if he has done any torque testing on these pieces. Material type turns out to be very important to brake rotors and the metal clutch pieces....even different grades of cast iron behave differently.
One of the other challenges in resurfacing the intermediate plate is that you will be reducing the final stack height of the twin-disk clutch when you remove material from the intermediate plate. That makes the clamping force less of the clutch as an assembly. This is why we went the re-manufacturing route instead of the resurfacing route.
Not to say that a re-manufactured intermediate plate is without risk, either. We inspect used intermediate plates before we have them re-manufactured, and cracks in the springs are the main reason a core is rejected. We have to re-use those springs (have not been able to source new ones), but then again, if you resurface an intermediate plate you are putting back used springs, too. The core of our intermediates is steel, and it restores the full thickness of the clutch stack for optimum clamping force. As Greg has said, hot-spots in the old plate are eliminated as a whole new center plate is installed.
Guys: we desperatly need old clutch intermediate plates as cores to rebuild. I will now pay $120 a piece for these things, and the clutch area can be scratched and blued - I don't care. Just gotta send me pics so I can see it has good springs and is rebuildable.
Sorry, I do not need 78-80 concentric type intermediate plates. Just the late 1980-1986 pinned-style intermediate plates.
If you have any sitting in your pile of old parts - SELL IT TO ME - and help a fellow 928'r get his car back on the road.
PM me, or just email me at carl@928motorsports.com if you have one you want to turn into cash.
One of the other challenges in resurfacing the intermediate plate is that you will be reducing the final stack height of the twin-disk clutch when you remove material from the intermediate plate. That makes the clamping force less of the clutch as an assembly. This is why we went the re-manufacturing route instead of the resurfacing route.
Not to say that a re-manufactured intermediate plate is without risk, either. We inspect used intermediate plates before we have them re-manufactured, and cracks in the springs are the main reason a core is rejected. We have to re-use those springs (have not been able to source new ones), but then again, if you resurface an intermediate plate you are putting back used springs, too. The core of our intermediates is steel, and it restores the full thickness of the clutch stack for optimum clamping force. As Greg has said, hot-spots in the old plate are eliminated as a whole new center plate is installed.
I'm sorry, I do not know the specific alloy that our manufacturer uses. What I can say is that the Company that re-manufactures them for us builds and rebuilds clutches for a living, so I trusted them to know what material to use when they told me they could do it. I can also say that trust has been well placed. I have been providing these re manufactured intermediate plates to the 928 community since January 6, 2016 (I looked it up) and have not heard back a complaint or issue with them
What type of cost for the reman?
I have not dropped it yet and want everything in place before I do, not sure what I will find. I did find a local machine shop after numerous phone calls and emails with pictures. They said they could do it for $125 both sides but I’m a little concerned if both the flywheel and IP is resurfaced loosing too much material will cause another problem. I assume a straight edge or dial indicator is the best way to test to determine if I even need to resurfaced. Is there anything I should look for when it’s out, I believe the super charger was the cuplret since there is very limited mileage on this assembly. Clatter is not that bad worse when cold but just annoying.
https://www.design911.co.uk/
has them new for sale for 1074 pounds. If you are registered at their side and put parts in the baskets leave the parts there and donīt shop.
The next day you receive a mail with the question why you donīt order.
Fill the claim with parts to expensive and you will receive a - 10 % discount.
FVD Brombacher has the plate also for 1580 or so....
I am writing to you with regards to you order, reference: (462104).
Unfortunately, we have been informed by manufacturers that the part: (92811603322 Intermediate Ring),is no longer being manufactured.We will refund you for the cost of this part,
02-27-2019, 09:43 PM
Intermediate Plate resurface options.
