924Board.org

[MikesCoupeGT]

Hi folks;

So I am looking around for a 5 spd that would work with my '76 924. I believe that I would be looking for an Audi 5spd for a quick and easy install, is that right? However I was thinking of seeing what it would take to install a hewland transmission? Has this been done before? Any other options or things that I should be wary of?

Thanks and Happy Thanksgiving all.
_________________
Cheers;
MikesCoupeGT
'76 924
'83 944
''19 Elantra GT N-Line

[ideola]

[MikesCoupeGT]

Thanks Ideola.

So from the lack of response I take it that no one has tried to fit a Hewland racing box to their 924. I know it would not be a straight bolt in, but it could be a nice upgrade for more gear choices.

And to also address the Audi box, I would need to find a 924 turbo or later 924 that has the 5 spd for a quick bolt in. Planning the upgrades to the car so that I have better acceleration and braking when on the track.

Thanks.
_________________
Cheers;
MikesCoupeGT
'76 924
'83 944
''19 Elantra GT N-Line

[fiat22turbo]

924 Turbo and 944 Audi boxes have larger splines and larger internal shaft for the Torque Tube. They will physically fit, since they are the same dimensionally, but you'll need to swap the Torque Tube, the transaxle, clutch disc and shift rods to make it work.

For a more straight-up conversion, you'd need to stick to an 80-82 924 non-turbo, since it leverages the smaller splines that you already have.

Here's most of the later 924 Turbo bit you'd need to convert your car: http://forums.pelicanparts.com/porsche-924-944-968-used-parts-sale-wanted/775974-fs-924-turbo-transaxle-torque-tube-bellhousing.html

Just need to ditch the 924 turbo bellhousing and change the disc to a Ford Bronco 2.9L unit (unless you want to relocate the starter and convert to an expensive 924 turbo clutch and hydraulic slave solution)

Also, pay attention to the gear ratios used in the 924 turbo, 944 and 944 turbo boxes you might look at, some will not be favorable for the comparatively low-powered 2.0 (unless you're planning on massive power increases in the near future)

Finally, there was mention here in another thread that the longer 5-speed interfered with the fuel tank on a very early 924 with the 4-speed. Of course the spare tire well typically gets dented in the process to help with the installation of the 5-speed.
_________________
Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

[fiat22turbo]

The Hewlend box would be a completely custom solution and would likely be more closely related to the dogleg aka Snailshell transaxle, which is loosely based around the 915 gearbox.

Most of the Hewlends I've seen were based around the old VW beetle gearboxes, so while there might be enough similarities to make it all work with a bunch of machine work, I don't know that you'd gain enough from it to deal with having to source the proper dogleg or snailshell torsion bar carrier and torque tube (remember only the 79 924 N/A had this gearbox and the 79-80 924 Turbos had the larger, stronger version of these gearboxes).

With that said, I believe someone here converted theirs a full dogbox with a custom gearset, but I don't know the full details.
_________________
Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

[ideola]

[MikesCoupeGT]

Thank you Fiat22 and Ideola. The information you have provided is great.
I will keep my eyes open in the area for later 80 82 model 924's that are not as solid or already partially dismantled so that I can grab the bits I need.

Cheers;
_________________
Cheers;
MikesCoupeGT
'76 924
'83 944
''19 Elantra GT N-Line