SWB 912 to 911 advice please

[Micker747]

I'm considering converting a SWB '67 912 to 911, but before I go at it, I would appreciate your advice and experience!
I have a 2.2T motor and 901 box from my 1971 911T.
As far as I know I will need an oiltank, engine mounts and do some wiring, but what else?
I guess the brakes and trailing arms are different, but do I need new front struts too?

-Mike

[Daves911L]

This is a very simple conversion. As you said, motor mounts and the oil system. You will also need a fuel pump and a different tachometer. The throttle pull rod may be a different length, but can be modified if needed. The suspension parts (trailing arms/struts/etc.) are the same between 911/912, no changes needed. Brake sizes can be different, but no need to change unless you just want to. Your 912 might have the funky floppy transmission mount too, and you might want to change that to the more rigid 911 style.

[Patrick3000]

Have you found a donor, if so pictures?

[nilknarf]

Dave is right on target! The 912s even came from the factory with the same wiring looms as the 911 (the obvious exception being the engine wiring harness)... I'm using my 912 transaxle with a '76 2.7L engine, '69 flywheel and clutch- they work great together!

Fellow Pelican Bob Ashlock offers an awesome little box that will allow you to use your stock 4-cylinder tach (that's what I did on my conversion project- see Tachometer Adapter for more details)... you'll also want to make sure you get gauges that let you see what's going on with your oil pressure and temp... and you may find it helpful to snag an engine bay electrical console (handy for mounting CDI boxes, etc) and if you have the single-circuit brake system (my '66 had that), you'd be well advised to convert to a dual-circuit master cylinder- the kits are pretty easy to install.

I've also heard that there are worthwhile differences in oil tanks- the later tanks have more capacity and baffles to prevent starvation (I think I'm remembering that correctly).

You may also need to make adjustments to your torsion-bars to compensate for the added engine weight (you can re-clock the bars or get something thicker depending on your tastes)

Curt