turbo2SE

iTrader: (1)

hey guys been looking in the archives and nothing on what im looking for also checked the manuals.not having any luck in there also .

well here is the deal.
i have a 81 gsl but its automatic. and got a parts car which is a 85 gsl with a manual. im stuck on getting the pedals out of the car i got the brake booster out and the clutch master cylinder out.
ive removed as much bolts i could see under the steering area. but its not budging out of there.

anyone have any detailed pictures on the bolt locations so i can get that part out.

thanks

turbo2SE

iTrader: (1)

update i found these but need somthing a little more detailed.

turbo2SE

iTrader: (1)

mods can you delete thread i found what i was looking for . thx rx-7 doctor

Kentetsu

Rather than deleting the thread, why not post what you found for future reference?




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Jeff20B

iTrader: (13)

Agreed. I'd like to let everyone know the '81-'83 pedal assembly is different from the '84-'85 assembly. I don't know if there are any differences in the firewall and how the pedal assembly bolts to it. I just know the '84-'85 clutch pedal travel feels noticeably longer and easier (ie more leverage) than the earlier assembly.

I'm very interested in this topic because I'd like to modify my '81 clutch pedal to act more like an '84-'85 so I can use a really heavy pressure plate and not fatigue my left leg in traffic.

I've thought of relocating my clutch master cylinder up higher on the firewall. This will provide longer pedal travel for the same cylinder/piston travel thus giving an easier pedal effort. Might be bad for a stock clutch disc with marcels, but I'm forced to go with a solid organic disc or a puck which normally have a very narrow engagement range. It might wind up feeling stockish, not quite so on/off.

Turns out there is already a precedent for relocating the clutch master on the firewall. When you upgrade an SA brake booster to the larger FB size, it's best to grab a set of FB pedals with backing bracket assembly and just swap it in. In order for it to fit, the clutch master has to move over a bit and up. This is what romo did.

https://www.rx7club.com/album.php?al...pictureid=5309
https://www.rx7club.com/album.php?al...pictureid=5308

We can tell it moves over but did you also notice it moves up too? I suspect the moving up of the clutch master is what is needed to accomplish my goals.


Oh by the way kentetsu, I installed an Exedy 10806 clutch kit in a friend's REPU the other day. This is the one you got from Billy at respeed. It feels a little on the heavy side for a daily driver, but it feels the same as the old setup he had in the truck consisting of an old style RB SS pressure plate and a slightly earlier version of the OEM clutch disc (with the rubber springs). I also swapped him over to an NA flywheel (N350 on an S5 T2 engine) instead of the light steel he had. Should be better for towing and hauling now.

Anyway to tie this into the thread topic, the REPUs had a fairly short pedal travel and a heavy duty pressure plate stock. Not as heavy as a street strip, but kinda medium. I bet if I relocated the master up a bit (if it's even possible on one of these) it might accomplish the same goal as described above for my '81.

Jeff20B

iTrader: (13)

To add a little more, I have an Exedy stage 1 pressure plate from the 10806 kit but not the disc. Instead I have an ACT organic "modified street disc". It is nearly solid (limited marcel) with 4 strong ACT yellow painted springs in the hub. I test drove this disc and a centerforce pressure plate already in my '81. The disc is a little heavy but really strong and never shuddered (unlike a typical RB clutchnet HD disc). The Centerforce pressure plate is basically a stock FC NA pressure plate but with the added weights on the spring fingers that are supposed to grip harder at higher RPM. Well, anyway it has a nice medium feeling pedal in my '81 which should transfer over into my REPU just fine. No reason for a heavy pedal if it's not needed, you know?

The 10806 Exedy kit boasts a healthy 183 foot pounds of torque capacity. This is plenty for a Camden. Even 84stock's record breaking setup making 227RWHP still only made about 180 foot pounds of torque. I'm sure my Camden setup in my REPU will only make about 170HP so the torque will be a lot lower. Probably 120 to 130 foot pounds. Does that sound right? Maybe more like 150 foot pounds and 180HP because it will have a 50" long dual primary exhaust flowing into a 2.5" secondary and 74 ported intakes with T2 exhaust timing.

Cliff notes: My Camden setup will be less powerful than 84 stock's because mine is going into a rotary truck. Less porting = more low end for towing, hauling etc. Therefore less high RPM power lets me use a lighter pressure plate such as a centerforce with a stock disc. This frees up my 10806 pressure plate for my FB but I'd like to relocate my clutch master to give a longer pedal travel with a solid disc so it feels more like a stock disc for easier daily driving and a lighter pedal feel with a stronger pressure plate. If I had an '84-'85 car, this would be unnecessary.

Anyone ever done anything like this before?

turbo2SE

iTrader: (1)

i managed to remove the pedal assembly found that long 14 m bolt that ties the pedal linkages together at the top and had to loosen the steering column so i could wiggle it around the column.

sadly my goal at this time was to source the parts i could needed for the swap. however im in the middle of a move. so the project is at a stand still. wont be able to make anymore progress till next year =/

but the 81 auto is basicly going to be a 5speed out of a 85 and pedals. and a 88 s4 13b na with the gsl-se mod to use omp cause im lazy to premix hah. with stock turbo. and megasquirt.