Follow along as I build a high performance 914 engine
Distributor Drive Cover & CHT Sensors
I had to increase the diameter of the oil pressure sender hole in the sheet metal (the original sending unit was just for an idiot light - this one does both the pressure and the warning light). After trimming the tin, I used some rubber edging to help close up any air gaps - and to prevent metal rubbing against metal:
Because I'm using the electronic ignition, I'm not going to use a distributor. I can't leave blue masking tape over the hole forever (see, it's even torn in the picture above) so I needed some way to seal it off. I fabricated a little part out of aluminum that duplicates the distributor mounting shaft and the o-ring grove:
It's a nice fit and gives a clean appearance to the engine!
And, I've installed a cylinder head temperature (CHT) sensor on each bank. The sensor is bolted to the stock location of the original fuel-injection sensor - that's next to the #3 cylinder. I'm also putting a sensor on the other head, next to the #2 cylinder. The gauge is an avionics item from Aircraft Spruce. Also note the brass plumbing fitting - there is one of these on each head. They will be plumbed to a "catch can" and should allow venting from the valve train area. The ability to vent any engine pressure buildup should help reduce the chance of the valve covers leaking oil.
|All pictures and text copyright 2008|