LN Engineering 2563 Kit Options

[JimVG]

Has anyone here built a 914 Type 4 using the LN Engineering 2563-190 kit?

[technicalninja]

the 911 and the T4 rotate clockwise when viewed from the front of the engine (belt drive side) and this is the more common way.

This is why everything from a SBC to Subaru and even Ferrari will plug in and work.

The rotation direction stays the same through the transmission.

In the 911s case the tranny is designed to be in front of the engine the output shafts run in the opposite direction to the 914 transmissions. Reason for flipping the differential.

Transmissions with "straight cut" gears should be able to run either direction without too much fuss. Hewlands are often straight cut.

Straight cut is NOISY, bad bad noisy...
Fine for an all-out track car but often noisier than the engine at "street duty."

Almost all streetcar transmissions have helical cut gears. These are normally QUIET!

Helical cut gears have a drawback, side thrust. The trannies are designed for gear thrust in one direction. They ALSO have to be able withstand reverse thrust, engine compression deceleration, but they will often make more noise doing this.

I believe driving all the gears backwards all of the time will cause rapid transmission wear. Might do weird stuff with the syncros and sliders too.
I DO believe it would work!
Just not very long...

If I was contemplating reversing direction of rotation in a Porsche transmission, I do know who's opinion I would ask for...

Paging @Dr Evil (ok, why did that not work?)

Would you run a 901 or 915 with reverse rotation input?