928 engine "

[BoxxerSix]

Hi there. I'm just tinkering with an idea in my head for a future project here at my shop and I have a little task I need help with. Essentially I have a spare 928 engine here, no electronics at all for it. Utlizing electronics and spare parts from other project cars inhouse i want to attempt to start and run this motor in a cradle.

The firing order on a 928 engine is 1 3 7 2 6 5 4 8

(correct or wrong?)

That makes a waste spark ignition setup run as cylinder:

1 fires 4 intakes
3 fires 8 intakes
7 fires 1 intakes
2 fires 3 intakes
6 fires 7 intakes
5 fires 2 intakes
4 fires 6 intakes
8 fires 5 intakes

(correct or wrong?)

And finally the camshaft intake/exhaust lobe duration is:

253/236 degrees for a 32 valve engine
236/223 degrees for an S4 DOHC engine

(correct or wrong?)


Sorry I hit the "post" button before I was finished typing this up............

Thanks folks!!

[m21sniper]

If i was you i'd call 928 specialists and talk to either Wally Plumley or Dave Roberts.