| Slant Six Forum https://www.slantsix.org/forum/ |
|
| Reccommendations for a clutch disc and pressure plate ? https://www.slantsix.org/forum/viewtopic.php?t=4794 |
Page 1 of 1 |
| Author: | Tim_K [ Sun Jan 12, 2003 7:48 pm ] |
| Post subject: | Reccommendations for a clutch disc and pressure plate ? |
I went through the search thing here, and also the online McLeod catalog, but didn't really find the answers I'm looking for. So here's the question: As I build my 1974 duster /6 race car, I am coming to the point of needing to buy a clutch. And I want to do it right the first time if possible. I need to know what kind of disc and pressure plate combination would hold up to a built /6, which will eventually have a turbo or nitrous on it. The car will be raced and driven hard both on the track and street, so it must be a heavy duty setup at the least. I'll be using a stock iron 25 pound flywheel, so I'll need a 10" disc. The McLeod catalog showed a 200 series organic disc for $83, but offered no technical information on it. The pressure plate section was no better. I'd like to have a high load pressure plate, and I don't care if it's a Borg & Beck 3 finger or a diaphragm design. I was thinking of a Centerforce dual friction disc, but does it need a certain type of pressure plate and flywheel? This engine probably won't go over 5500 rpm often if at all. |
|
| Author: | bud L. [ Sun Jan 12, 2003 10:41 pm ] |
| Post subject: | ? |
I don't have any experience with the dual disc setup, per se, but I think it's a good idea to lighten the load on the pressure plate, and thus the linkage. I believe that's one of the advantages with the dual disc setup, good holding power with lower pedal pressures. |
|
| Author: | Dart270 [ Mon Jan 13, 2003 8:21 am ] |
| Post subject: | |
Do a search on this site for "Mcleod" and other clutch related terms. Rick Covalt, I believe, just bought a full HiPo setup from Mcleod with HD disc and plate and the part numbers and prices are in there. There is also the clutch article in the "articles" section. I plan on copying Rick's setup from McLeod with diaphragm PP, HD disc, and an aluminum flywheel when I get the dough for it. Lou |
|
| Author: | Rick Covalt [ Mon Jan 13, 2003 12:53 pm ] |
| Post subject: | Flywheel |
Hey Tim, Just my 2 cents worth. If you plan on racing, or doing a lot of full throttle speed shifts, invest in the steel flywheel. I know Doug will agree. I had a major explosion about 20 years ago and feel lucky to still have both feet!! Destroyed belhousing, flywheel, engine block,nose cone on input shaft, floor boards and hood. Considering the prices of these items today ,$275 for a steel flywheel looks pretty good. If you would like to talk to me by phone feel free to call. PS. I don't know what the long term holds for this webber set up, because it only has about 1100 miles on it. But it really holds good now and has a very easy pedal push. Rick |
|
| Author: | Bruce Johnson [ Tue Jan 14, 2003 1:53 am ] |
| Post subject: | |
You could have clutch loaded to your specs. I had a 10"Borg and Beck put together with 2600 lbs of pressure, its a three finger but the guy who built it said he found a rather thick piece to start with he also said it was the most he ever loaded into a 10" and I think thats why he discuraged a disk with ceramic buttons, but I really like it for the street, but with 295 50 tires and a 3.50 rear it shows its limits. But the plus side is, its real cheap. With cores I only paid $95 for plate and disk, that was at Otts Friction, Portland Or. Check out Docs artical on clutchs, as for foot fatigue allot has to do with how you build the linkage. mine has a custom made fork because I'm useing a small flywheel on a truck. As for drag raceing I'd listen the Guys who are experianced. But Ive seen used 7 1/4" triple discs for auction on racersauction.com Otts told me that they will rebuild them Bruce Johnson |
|
| Author: | bud L. [ Tue Jan 14, 2003 9:12 pm ] |
| Post subject: | linkage |
If you increase the pedal pressure or even if you have a "quick leg", I can just about guarantee you'll break/bend the stock linkage on an early a-body. I did some extensive rework of mine. |
|
| Author: | Tim_K [ Wed Jan 15, 2003 6:52 pm ] |
| Post subject: | |
I was thinking I'd need to make a stronger "Z" bar for the clutch linkage. Shouldn't be a problem. What about a block saver plate? I've seen scattershields that came with them. Could I make one out of 1/8" mild steel and bolt it in between the block and bellhousing? Would 1/8" mild steel be enough? I don't think it'd offset the transmission enough to hurt anything. Or is the saver plate thickness built into the blowproof bellhousings already? A clutch explosion would be bad enough, I'd hate to lose the engine in the process. |
|
| Author: | Rick Covalt [ Thu Jan 16, 2003 12:43 pm ] |
| Post subject: | Block Plate |
The block plate thickness is taken into account with a blowproof bell. I personally don't think 1/8" is thick enough. Blow proofs are usually made from 1/4" and the block saver is 3/16 or 1/4" If we had not gone with the steel flywheel and the Webber set-up I would have definately put a piece of 1/4" plate under and beside my feet on the floor boards. This is cheap protection if you can't go the steel flywheel route. One other thing I fogot to mention. When my clutch explosion happened, pieces of shrapnel went in all directions. One piece hip the front brake line(The steel piece that crosses over to the right side) and smashed it flat. Luckily it did not cut the line!! No brakes at 20MPH is one thing, No brakes at 100 MPH is another. Rick |
|
| Author: | Tim_K [ Thu Jan 16, 2003 9:10 pm ] |
| Post subject: | |
I sure would like to buy a scattershield for my Slant 6, but I don't know of anyone who makes them. I will at least be putting some kind of plate protection between my feet and the flywheel. I may try to have a piece of 1/4 plate steel bent to the shape of the bellhousing and bolt it on somehow. A few years ago at a local burnout contest, some guy in a Nova tried to do a burnout, but the only thing that smoked was his clutch. This idiot stayed in it for about 10 seconds until it exploded. One piece of flywheel hit the ground, somehow made a 60-90 degree turn, and flew about 200 feet, over the heads of a crowd of people watching the contest, through a tent, and through both sides of a box truck parked on the other side of the tent! From the height of the hole in the side of the truck, it couldn't have been more than a few feet over those peoples' heads! No one got hurt, but someone WOULD have been killed if they caught that flywheel chunk with their face. |
|
| Page 1 of 1 | All times are UTC-08:00 |
| Powered by phpBB® Forum Software © phpBB Limited https://www.phpbb.com/ |
|