geezer101 wrote:Good work Dave and Phil, persistence pays
Well, I can confidently say we've been persistent. Damn this thing has taken some time to get right.
It does really annoy me some of the small things we've missed along the way that would have saved us from doing things twice
geezer101 wrote:Maybe the act of skimming the head was enough to pull the timing out of whack?
It only got the slightest skim. It could be possible, but I dunno
It is possible the cam timing may have been advanced (by the previous owner), but on TDC the number 4 intake valve was near completely still open, and the exhaust valve not even starting to open.
My Lancer hatch ran the timing 2 teeth of the timing belt advanced. That allowed it rev higher (7000rpm), but no low down torque really at all.
This motor in Phil's car had no top end power at all so I was not expecting it to be advanced cam related. We live and learn I suppose.
I thought it was a fault in the ignition system because the problem came and went. I was thinking cracked lead or plug or something of that nature (I've had this problem before, and it's very irritating to drive a car with that problem). And as I was unfamiliar with side draft weber carbs, I was tending to blame it for the some of the issues (as I could not prove otherwise), so we ended up swapping it out, so that I could diagnose with something I understood (the stock carb).
Compounding problems are always harder to trouble shoot. If it was just one at a time I'd be sweet
The way forward for now seems to be to drive it as is for a while. And let's see what other problems it throws at us
I would still like to refit the weber on the motor to see how it performs now, before we move onto anything else. I have google searched as much as I can on it, and checking the jetting it appears to be right in the ball park for correct set up for a 1.6 (even though it was tuned for the 1300 originally) going on information on jetting set ups for Ford Escort crossflow 1600 motors.
Thoughts are possibly to fit a factory twin carb set up on it. On driving my wagon, Phil likes the way the twin carbs react on the car, and they return good economy as well (something the weber has not been so good at to date). The weber is running 30mm chokes, so effectively, it's running the same size chokes as the stock carb anyway (28/32). I think with correct tuning of the car to suit, I think the weber should be able to get good fuel economy. Maybe just including a vacuum advance off the intake manifold? It has not been running a vacuum advance with the weber at all to date. Vacuum advance is something that really helps fuel economy on a street driven car (not so important on a race car that's generally driven WOT).
Other things that need to happen on this car:
- Fit the 5 speed gearbox before Phil and the GA move to Vic.
- do some body repairs (one small patch of rust and rear damage done when the exhaust caught on the car trailer when going to the exhaust shop).
- fit the GS instrument cluster
- fix the head light situation (needs more illumination).
- get the 13x6 Bathurst Mk1 rims restored and polished and fitted to the car (to fill those guards out a bit more).
Can you think of anything else it needs Phil?
Dave..