Falk930

Hello,

I know some here have made the G50 swap.
As the engine moves a little to the back,
what have you made with your throttle linkage?

During some upgrade work I discovered that my
throttle opens only to ~85%, maybe its less.
The linkage touches the engine tin, see pic down here.

I am quite sure the reason is the G50 swap which was
made on my car many (~10) years ago (not from me).
It seems that since that, my 930 never saw WOT :-)

this is my throttle when pedal is pushed maximum


this is the linkage on maximum position (~85% )


rebending the linkage might solve the problem,
but maybe you have another solution?
Pictures how the linkage looks like on non G50 car
or a modified one would be very helpfull.

How much power was not used with this blockade?

thanks
Falk

Geoffrey

Update to the 89 turbo throttle linkage.

Falk930

Hello Geoffrey,

thanks for the idea!
What will be the difference?
*edit: from PET, all 930 linkage are the same from 78-89,
part nr. 930.423.019.02

...and still, how much power was not used
with 15-20% less throttle?

Falk

02fly

So how hard is a G50 swap? I talked to the guy that has the Ruf 5 speed for sale on ebay and he indicated that $8500 is what it was going to take seems like alot of $$$ but maybe not, what do you guys think is the better way to go?

pdqcarrera

Depends on specifics how hard it is. Year of vehicle, whether you get a shortened bell housing G-50, etc. Don't believe that RUF 5spd you're referring to is a G50. Do some research and you'll find that RUF trans isn't as strong as the stock 4 or a G50. You should be able to do a complete G-50 changeout using a complete G-50 trans kit from Patrick Motorsports in AZ for about $10k total including labor from a decent shop.

Falk930

If I am correct, the experts here should correct me,
even with a shortened bellhousing, your engine position
will move slightly backwards.

On first look this is not a big point, but I am discovering
more and more small problems with this.
1: I am installing a RUF IC currently.
This unit fits very close to the lid.
Very probably I need to cut out something here.
2: I took out my alternator incl housing.
It is a mess anyway, but with less space its not getting easyer.
3: this threats topic: Someone has made the G50 swap on my car
many years ago. I suspect something around 10 years.
Everything was done professionally, the car is perfectly running
with the G50 since that. Only they forgot to resize the throttle linkage.
I never had it on a dyno, power was great
Adjusting the linkage will be my cheapest performance upgrade :-)

So remember, there are few disadvantages withz a G50.
On the other side, I won`t miss this gearbox!

Falk

nathanUK '81 930 G50

The RUF 5spd won't give you the nice easy gear changes that you get with a G50.

My car has a 3.8RS tail and a bent throttle linkage...

I also think the cross member (engine bracket) is flipped to allow some extra distance as the holes for the 2 bolts for the mounts are not in the centre!