Bigracks

I have a 1986 na that I plan on running in the 24 hours of lemons. I am going to change the brakes on the 1986 to the brakes from a 1988 Turbo (Big reds?)
What things should I need to worry about; I have the complete 1988 turbo roller chassis.

Should I change the complete suspension? I know I will have to change the offsets from the stock NA to the Turbo; I will be changing from 15" rims to 16" rims. I still will need to run both sets of rims (15" for rain tires and 16" for Falkin 615k's race tires)

Do i need to change the master cylinder? I will be running a brake bias valve to.

The sway bar size on the 1986 now is 23mm front and 14 rear, what does the turbo have as It is still in transit and cannot measure now.

Also does anybody know of any trick to do to a automatic trans for a 944???
I know it's not the best to run a auto but that what the car had.

Thanks for you help in advance

Rock

It may be hard but with the right attitude and hard work, anything can be done!

Rock

Oh my god I am just kid!

Try doing a search for turbo brake upgrade, there are a lot of threads that will explain in a lot more detail what you need to do.

The entire suspension doesnt have to be removed, at most you may need the steering hubs and spindles if the car has the M030 option (assuming it does since you said big reds).

The sway bar size again could be considerably larger on the turbo if it has M030. Without M030, the swaybars are larger, cant remember the exact specs however as I havent had my coffee or my beatings

Bigracks

I dont know the actuel size of the brakes on the 1988 turbo but the calipers are red and look like duel piston, how can i tell if it has the MO30 OPTION???

Are the brake rotors, larger on the turbo than the NA? AND IF THEY ARE WHAT IS THE DIFERANCE?

V2Rocket

is there any reason you cant put the 944 motor in the 951 chassis and run that? then all the suspension is there and you have a manual gearbox which will help you in the racing...the automatic is a dog...plus you can put the 944 body panels on the 951 so no one suspects it

pettybird

you'll get penalized like a million laps for running Brembos.

unless someone actually put 993TT calipers on the car, it almost certainly has 951/964 brakes. four piston calipers, but smaller. the rotors are both wider and thicker than an NA car. you need to run the hubs and spindles. the master cylinder is the same. if you have an '86 you need to use the lower control arms and '87-up wheels. the rear rotors are also larger diameter and thicker, and you'll need the hubs out of the turbo arms due to the difference in offset.

if you won the lottery the car MAY have the M030 suspension, but I highly doubt it. the front calipers would be physically larger than the rears, unlike a standard turbo. the front calipers are radial mount, meaning they bolt on straight down. the front struts would be height adjustable (have coilover mounts). turbo sway bars are 25 and 18mm, turbo S (M030) sways are 26.8 and 18mm. the rear torsion bars would be larger (25.5) than the 24's on a regular turbo, and both are stiffer than your NA.

Bigracks

Brakes are open, it is a saftey item,you can put as big ones as you want. dont have the manuel trans for the 1988 T roller chassis. So it is easyier to chang the suspension, going thru the whole NA chassis anyways?

Rock

I dont think that running brakes or bigger brakes offer any sort of penalty in lemons. I think they are classified under safety. What if my lemon had busted *** brakes and I went over the $500 dollar budget with other things? I'd ramm the shat out of other cars before I take a penalty.

Bigracks

PRETTY BIRD,

Thanks for the info, the 1988Troller chassis I am getting Does not have coilovers.
so it looks like I will change the front and rear swaybars, and the rear torsion bars.

What I have now is?
front sway bar 23.5mm
rear sb 14 mm
rear torsion 23.5?
it does have koni adjustable shock in the rear and they are in great shape (have to dyno)

front sway bar 25mm
rear sb 18 mm
rear torsion 24??

what would be a good front spring to run? 200 lb 250lb? stock now as tested is 122lb

may cut 1.5" out and that will increase rate to 135? and then spring rubbers ? no penalty if I use the stock springs.

PorscheDoc

The 944 is a momentum car, you don't need big brakes, lol. The guys racing 944 spec series don't have any issues with just upgraded pads in the stock calipers. If you are going to late offset, then you will have to swap the control arms, tie rods, spindles, hubs and rotors over, possibly the struts due to mounting width, I can't remember. If you are keeping the same early offset, then you will have to swap the spindles, hubs, rotors, (again possible struts), but you will be limited on your camber adjustment. In the rear you will have to swap hubs and rotors if going late offset. You will have to do bearings at the same time likely.

88 turbo should have the 25.5 or 26mm front sway bar (i can't remember the exact dimensions, but it is one of those).

Bigracks

Had to change rims sizes from 15" to 16" (1988) as the tires we want to run Falkin 615k have a better range of sizes to fit the 16" rims so i have to change the hubs front and rear for the correct offset.

the 15" falkin is only available in 205-50-15"
and the 16" is available in 205-40-16 and 215-45-16 and225-50-16

What sizes will fit or be the best???

racer

15's don't fit over Turbo's front brakes.

Its Lemons.. its supposed to be a ****ty car so keep the stock brakes 225 or 245s would be best. 205s are way too small. 215? why bother..

Bigracks

That is why I have to go to the 16" rims from the T car, to go to the 225 they are only avaliable in those sizes.. we are limited to a wear rating of 200 and the falken 615k seem to hold up and handle the best,,the car will be on the track for at least 14 hrs

As stated above I will be installing the 1988 suspension and brakes on the 1986 NA.

dillon410021

maybe just install a proportioning valve so the rear brakes do more than stock.