how to fit an extra clutch plate in front clutch pack

Anonymous · Post by **Anonymous** » Fri Jan 14, 05 12:29 pm

half way through 727 rebuild and have found in kit i have 5 front clutch plates and 4 rear

box has only 4 in at moment but have read you can fit the 5 plates in but how?

would it be best to ring Dunc or has someone got a way to do it?

cheers

Kev · Post by **Kev** » Fri Jan 14, 05 12:39 pm

Justa guess but I think the five plates will need the Hemi/Heavy duty drum to fit them all in.

Dave-R · Post by **Dave-R** » Fri Jan 14, 05 1:17 pm

Dunc is your man and Blue a close second.

Kevs right about the hemi drum except I think you can have another groove for the snap ring machined in higher up instead?

I think it also depends on how thick the friction material is. Just put in as many as you can and fit the correct thickness snap ring.

Ivor · Post by **Ivor** » Fri Jan 14, 05 1:18 pm

I just stuffed all five in and made sure the clearances were correct...I have yet to see if the box works though!

Dave-R · Post by **Dave-R** » Fri Jan 14, 05 1:34 pm

I am sure I have had 5 in before by using a very thin snap ring and the B&M friction plates (which are thin).

I am using better friction materials at the moment and could only get 4 in with a thicker snap ring.

Ivor · Post by **Ivor** » Fri Jan 14, 05 2:17 pm

Ahaa! I used B&M friction plates, so that could be the answer...though I still don't know if it works yet

Dave-R · Post by **Dave-R** » Fri Jan 14, 05 4:27 pm

As long as you remembered to fit the seal around the piston that compresses them.

I didn't the first time..

It slipped a little to say the least.

TrevD · Post by **TrevD** » Fri Jan 14, 05 5:34 pm

i done a mod on a front drum for blue , machined a secong groove to allow five plates , the pic isnt wonderfull but this is what is needed , the top groove is the new one .

Blue · Post by **Blue** » Fri Jan 14, 05 6:55 pm

If it's a B&M kit you are useing then the clutch plates are thinner (same thickness as in the rear drum) to allow you to fit 5 into the front drum if it originally had 4 or 4 if it originally had 3, without any other mods. The Mod. that Trev is showing you is a 3 plate drum with a new snap ring groove so it can take 4 plates. If you are useing stock thickness front clutch plates and you want to add 1 extra clutch plate then the thick retaining plate under the snap ring needs to be machined to suit. Hope that makes sense!

Anonymous · Post by **Anonymous** » Fri Jan 14, 05 7:43 pm

the clutch plates and steels are the standard thickness just made by jaybestos company.

please email the picture of the machined grove as it may be the way forward and i can't access it of the mma site.

Cannonball · Post by **Cannonball** » Fri Jan 14, 05 8:42 pm

if your drum will only take 4 plates just put that amount in dont go to the trouble off machineing the pressure plates thinner to fit five friction in. the trans work fine with 4 plates in, i have run up to around 750 hp so far on 4 plates, every time i used the b+m plates 5 off after i tore my box down just to check it was ok that clutch had always burnt the b+m plates i dont rate them to much, put 4 stockers in you will be fine, i also read somewhere not to put 5 in i cant remember why but it was a good source

Anonymous · Post by **Anonymous** » Thu Jan 20, 05 9:35 pm

I think my Protrans 727 has 5 that seemed to work ok And most of the transmission bits people send here to ship back to England seem to be from Cope's Racing Transmissions ( they have a good website). I just had a mooch through the catalog and their race boxes have 5 clutches as do the Prostreet ones..
Have a word with Blue and see what he says, or Tig Napier he's just bought a boat load of stuff from them too. That big old Challenger with the indy motor needs some serious transmission, he builds his own boxes though, maybe you should have a word with him.

Cannonball · Post by **Cannonball** » Sat Jan 22, 05 8:25 pm

just fit the 4 plates, no hassles will take the power, 5 is a myth if a 3,8001b hemi challenger with a 2201b driver can go 10.2s on 4 plates yours will be fine, forget a lot off the hype, have heard it to many times, many parts that have worked well for yrs are suddenly no use because some rich guy stateside has decided that they arnt because such and such says so,

Anonymous · Post by **Anonymous** » Sat Jan 22, 05 8:36 pm

Didn't the hemi box come with 5? I dunno , but Trev's mod looks pretty cool though and as for expensive -I reckon Cope's Racing Transmission do a pretty good deal , a lot of the lads in England are buying his stuff now, I've got two more loads of it sitting here on the floor ready to go.
That dollar rate is a killer at the moment , one of those Prostreet tranny's is , what 600 quid?

Cannonball · Post by **Cannonball** » Sun Jan 23, 05 1:57 pm

yes hemi boxes came with 5 plates but was a deeper drum to accept them, but has been proved not needed so why waste time modifying the drum, or piston or end plate, when 4 suffice, i reckon by the time your on the edge off makin the clutch slip through high horsepower you will be in to breaking gear sets or input/ output shafts first

Mopar Muscle Association UK

how to fit an extra clutch plate in front clutch pack

how to fit an extra clutch plate in front clutch pack

extra clutch plates