LF RUF 5 Speed Gearbox

[1986 930]

Greetings,

Breitwerks is getting spooled up to complete the conversion of the "Beast" to a RUF BTR Spec. The only thing I need is a RUF 5 Speed Gearbox. The original conversion was more or less a cosmetic job to showcase all of the crazy Ultra-Smith Electronics.



Thanks,

Mark

[reclino]

Maybe you could elaborate on ultra-smith electronics?

[1986 930]

The car was modified by Ultra-Smith with the following:

a) The "Winkler", which is the License Plate folds down by pushing a button while the car is in reverse
b) Upgraded Stereo with amp and additional speakers in the cabin
c) A smugglers Box which opens at the push of a button
d) Integrated Radar Detector where all of the controls were integrated into/under the dash
e) Auto up/down switches for the windows
d) A car phone mounted between the seats

Unfortunately, the Ultra-Smith Electronics did not stand up to the test of time and I had the electrical system returned back to stock to mitigate a bunch of shorts which ended up blowing up 3 CDI's. So, all of that stuff has been removed although the switches remain scattered about.

With this restoration, I am having a new stereo put in and I would like to get the one touch window switches working again. The regular switches work, just not the one touch switches. I have a copy of the build sheet that I can post later this week.

Mark

[Matt Monson]

Unless you’re really stuck on originality, you’re better off using a G50. Those 5spd conversions were clunky, the parts for repairing 5th/reverse are hard to come by, and it still is based on a 930. It will also cost about twice the price of the G50 route.

[Porsche 935]

A g50 will take some modifications to fit. It's an 86.

[Matt Monson]

Originally Posted by porsche 935

a g50 will take some modifications to fit. It's an 86.

1.1”.

[totle]

Buy and modify (short bellhousing) a G50 would still be cheaper than getting an original 5 speed ruf transmission. And better shifting.

I did the g50 conversion in my 79 930, and I did not find it tricky to no. No need to modify the torsion tube

[Axel84]

Ive sent you a PM.

[1986 930]

Hi Axel,

Thanks for the note. Breitwerks found a shop that can convert my 4 speed to a RUF 5 speed using RUF Parts for around $30K. I can't see dropping that much into the car above and beyond the cost of getting the engine and turbo back up to snuff. The transmission rebuild is $6500 so that is a pretty big difference for an extra gear.

Thanks,

Mark

[1986 930]

Here is the Build sheet from Ultrasmith.

[Porsche 935]

What are the engine specs going to be to make this the "beast"?

[1986 930]

We are looking to upgrade from the 3.3 to a 3.4 with RUF BTR Compression ratios and CAMs.

That is the plan now. We might look at custom CAMs to get some low-end torque for drivability, particularly if we stay with the 4 speed. The 5 speed may be a bridge too far as cost goes. It would be cool though!


My mechanic has each customer name their car. So the slant was dubbed the Beast years ago. With the B&B Headers, RUF Intercooler, and .9 atm of boost, it gets up and goes. I call the Cayenne S the Tank. I always liked Panzer Kampfwagen 955 but the woke crowd would lose their freakin minds!

[Matt Monson]

Not surprised to hear how cost prohibitive it is. I have an NOS 5/R shift sleeve for the Ruf, and I wouldn’t part with it for less than $1200. Regular 930 shift sleeves are $200.

If you want to stay 4spd, and optimize it to the engine, lmk. I continue to manufacture 930 race ratios and generally have the most popular ratios on the shelf.

[onboost]

Originally Posted by 1986 930

Here is the Build sheet from Ultrasmith.

That build sheet brings back such fond memories of the 80's/90's and all the crazy stuff going on with these cars in that era!

There was an Ultrasmith 930 here in the area, I almost bought it but the lady who owned it (took it from her husband in the divorce) was such a Bxxxch I decided not to. Ended-up providing my assement to Sloan (Sloan cars) and he purchased. Car was Pewter with lobster interior.. still around up in the NE somewhere.