The one part of the oval project that has given me the the most challenges is the 915 gearbox conversion. Most people that opt to go down the Porsche 5 speed route use the much easier to fit 901 gearbox from the Porsche 914 / 912. Whilst not as strong as the later 915 box it shares the VW mountings, uses a cable pull style clutch and is much simpler to install. I opted to go with the 915 as the 901 was not suitable for the power of the big Type 4 that I had planned to hook up to it, plus I did not like the dogleg shift pattern of the 901.

If you read my last post - 'Hydraulic clutch slave' which was about fitting a hydraulic clutch to a Porsche 915 gearbox you might have thought that it was a good solution to an otherwise difficult issue to solve. Well that is what I thought until I tried to fit everything together. What I actually found was that the slave cylinder that I used was too long and meant that it fouled on the clutch assembly when the engine was installed in the gearbox. With limited time to buy and fit another shorter unit I decided to look at converting the old pull style 915 clutch release to a traditional push style.