Just updated it. Sorry about that.a lill in the signature line would help us as we would not have to go back & read it all to find the important stuff on this rig for problem solving/recomendations/advisement (drive train, carb [o0OP I C now], ignition, gearing, type of transmis, etc)
I'm still playing with this thing. It's fun to drive and I've been busy much of late. Got married, which was the event that I could not miss, nor could Sunshine as she was the chariot. Also bought a house. Shortly after that drove it to work one day and the cam gear decided to hop off the cam. My fault- looks like the cam spacer was installed backwards( chamfer away from cam) by my 19 year old self 6 years ago and broke, which caused the cam gear bolt to loosen. Opps. While putting it back together, found the carb was slightly loose on intake- good 1/2 - 3/4 turn. After that I'm back to the pinging, but my O2 appears to have died. I suspect I'm back to lean. I'm running a 160-180 main jets. And before the carb tightening my WOT AFR was still in the 13's, I'm amazed as to why i'm having to get it this much to close to my afr. I'm back to getting similar symptoms was I was before I made a big change to the mains before.How'd ya make out with this?
I had to use 85 Primary / 65 Secondary Idle.
Mains 160/150 just to get SOME color on the plugs...mine engine was hot & LEAN before with the stock jets.
i'll have to try manifold vs ported. It's using ported right now, but I'm having timing issues at higher rpm and under load. I'd love to get a holley system for the car, 2300 sniper with dizzy and hyperspark. Wasn't out when I built my set up. I really want to get a vintage inlines head and drill the intake for multiport fuel injection, running a holley dizzy and computer. I can't really drive at full trottle much due to the pinging. On a plus it's getting 22 mpg on the highway at 85.Dragonlich,
Are you running ported or manifold vacuum advance to your distributor? I was having similar issues with mine and switched from ported to manifold and solved my pinging issues at heavy throttle. As I understand it, using ported vacuum will, at higer throttle, advance the distributor from both the vacuum and the machanical advance within the distributor thus giving you too much advance. Manifold vaccum will drop the timing as the mechanical timing kicks in, which is what I think you want. You will have to watch for pinging when cruising at high speeds when you back off of the throttle.
Additionally you can get a synchronous kit to change your 32/36 from a progressive carb to a synchronous ( similar to the 38/38 ). This is what I'm currently using and the gas pedal doesn't have to live above 50%. As others have stated, the 32/36 is an economy carb out of the box, but if that's not exactly what you want, the synchro kit is a cheap way to get some pep out of it. It only affects how the pedal - carb feels, it does not improve overall performance and basically kills any fuel economy benefits that the carb would have had.
Beauty of a car/truck by the way,
Chris
He will have only 32 degrees total advance, should be at least 36 total. It has to be a lean WOT A/F mixture.Retard the the initial timing to 14 degrees then test drive it. I milled .060 off my 78 head. I run the cheapest gas without any pinging. I do not get any engine tuning advice from this "business" forum (which I suspect is more about part and services sales than performance). I have a wide band O2 sensor and an HEI dist in my 78 200. It runs great no pinging ever.
TOO LEAN @ WOT.I'm still playing with this thing. It's fun to drive and I've been busy much of late. Got married, which was the event that I could not miss, nor could Sunshine as she was the chariot. Also bought a house. Shortly after that drove it to work one day and the cam gear decided to hop off the cam. My fault- looks like the cam spacer was installed backwards( chamfer away from cam) by my 19 year old self 6 years ago and broke, which caused the cam gear bolt to loosen. Opps. While putting it back together, found the carb was slightly loose on intake- good 1/2 - 3/4 turn. After that I'm back to the pinging, but my O2 appears to have died. I suspect I'm back to lean. I'm running a 160-180 main jets. And before the carb tightening my WOT AFR was still in the 13's, I'm amazed as to why i'm having to get it this much to close to my afr. I'm back to getting similar symptoms was I was before I made a big change to the mains before.