Hey Lags,

Yeah, well I'm not going to bullshit you, but I'm pretty certain the first video was with the engine knocking pretty severely due to the 'pancake' GX head (milled excessively). There was also some timing errors and an exhaust leak.

I spoke to the engine builder who claimed the compression ratio was 12:1, and I figured with some high octane fuel (e85 - which is NLA in SA) and some octane booster I'd get away with it, so I found out pretty quick that the comp ratio was completely different. (lesson 001 measure, measure, measure then check and check and check) I shouldn't have taken his word for it.

After measuring everything up it turned out to be about 15:1 .......... yeah.

But this is a learning curve as much as a hobby for me so I figured I was lucky that I didn't put the engine under load when it was knocking so badly. To tell you the truth, the video audio actually helped to identify a knock rather than an exhaust note, so it was the video that confirmed it (a bit hard to hear anything when it was running).

Anyway the head on it now is a stock H75 with some old springs and I plan to use the GX head a little later (unless old mate decides to finally buy it) when I've got the carbs running sweet.

D, yeah I'm in debt pretty bad, nothing serious! but my credit card is smoking after all the swiping it's copped!

I f-in love Datsun 1000's so bad, it's going to be a real problem when I have a decent income....


EDIT SORRY I meant pinging where I said knocking.

EDIT EDIT; No, no I meant knocking, pffft.