What The Heck!!!!??????

[Mercmarquis]

Today I put on the edelbrock 600 I got from Pete(thanks alot mang I really appreciate it, I'll get the parts and $$$ out by mid next week hopefully).

I really like the edelbrock, its alot better than my holley on the topend and drives nicer. The thing is tho it keeps bogging down when I try to launch or get up and go from a roll. It pops and backfires and sometimes just shuts down. I am almost positive its my timing, but when I advance it to help on the bottom end it will ping when the rpms rise, if I retard it she'll get worse at launching.

When I was tuning the holley it helped when I gave it more pump shot, but I maxed it out couldnt get any more. Is there any way to get my distributor to have more advance when I try to launch and then drop off so I can run at high rpm with out pinging? Any ideas? I'm gonna try to get more of a pump shot on the edelcrock tomarrow when I replace my leaky front seal.

Should I try messing with the cam while I'm in there tomarrow and try to set it so I have more bottom end power? Would doing that kill my topend power?
Any Ideas are welcome, cause it really sux not being able to launch or burnout. I gotta say tho, when those secondaries crack....I'm friggin gone

[Grand Marquis GT]

Something doesnt sound right, timing wise...

By chance is the tining order correct with that cam you are running???

[Mercmarquis]

Firing order, yeah its correct. I'm gonna keep reading up on durasparks, and see if I can come up with something. The cam is also put in with the marks straight up like the manufacturer says, so no problem there. I didnt have time to adjust the carb for a bigger pump shot, but I'll try it tomarrow.

I replaced my front seal on the timing cover today, and so far....NO LEAKS YAY!!!!

[gadget73]

What is that carb jetted for? It might not be correct for your engine. You could try running the vac advance like Ford used to on thier trucks: direct to manifold vacuum. Timing was set at like 8 or 10 btdc with the hose unplugged. The timing would be way advance at idle or low throttle, and WOT it would actually kill the advance and run purely on electronic or mechanical advance. Give it a shot, worst that might happen is it'll suck and you can just move the vac line back to where it is now.

[mrltd]

I had to do alot of nozzle swapping and tuning on my edelbrock for the accelerator pump. That's most likely the bog issue. Once you get it right though, it never needs asjusting.

[85crownHPP]

glad the carb arrived safe mang, I hope you get the bugs worked out soon!

[Mercmarquis]

Alrighty...I read a bit on durasparks....I think I might change the reluctor arm from the 15L to the 10L. That way I can set my initial timing around 15* and end up with 35* total advance. Then I'll adjust my vac advance so she doesnt ping while cruising up hill. Then hopefully I'll have it set with a larger pump shot and the initial will be high enough so she doesnt bog down.

I think that sounds like the plan, I dunno if it will help or make it worse. I'm gonna have to mess with it. Spring break is coming up so I can mess with it then. I woulda worked on it today but it went from 60* and sunny this mornin to 36* and windy as hell with lots of rain.

[Mercmarquis]

H.O. FIRING ORDER 1-3-7-2-6-5-4-8
Non H.O. Firing Order 1-5-4-2-6-3-7-8

Is this correct? I think my haynes manual is telling me the HO order. I gotta check on this.

[Tiggie]

H.O. FIRING ORDER 1-3-7-2-6-5-4-8
Non H.O. Firing Order 1-5-4-2-6-3-7-8

Is this correct?

I do believe so. For the record, 302 HO Firing order is the same as all 351W.

[GoodSamaritan]

Have you tried adjusting the idle mixture on the carb?

It will make a big difference in how much initial timing the car likes.

It is easy, grab a vacum gauge, and adjust the mixture screws slowly until you have the most vacum you can get.

Another idea is to put a restrictor in the vac advance line to slow it down a bit.

One other thing, it is possible to get too much fuel from an accelerator pump, but I doubt it would cause the symptoms you describe.

Check on this stuff, and then play with your timing.

I have put on several of these carbs and a 600cfm should work decent on a 302 right out of the box.

[Grand Marquis GT]

Post a little on that info about durasparks...

Im interested..

[Mercmarquis]

I read this artical, and a few others on this site http://www.fordmuscle.com/TechDepartment/engine.php

Theres a ton of info on it, I might be getting a subscription to it. This is the specific artical: http://www.fordmuscle.com/archives/2000/03/timing/

[Grand Marquis GT]

Damn, I shoulda done that...

[gadget73]

re-curving a distributor. wow i haven't even considered doing that in ages. I'd have never even thought about it. Last thing I fooled with that ran on a mechanical advance was the 009 distributor in my Beetle. Timing was set to 30 degrees BTDC at 3000 rpm. Idle was where it was. I remember replacing it with a vac/mechanical distributor with the same advance curve and a vaccum can to try and fix an off-idle hesitation but my carbs were so worn at the throttle shafts that even connecting the two vac advance ports together couldn't get more than about 2" of vacuum, not enough to operate the mechanism. I think I used springs from a grenaded stock distributor to re-curve one of my mechanical advance ones but it ended up advancing too fast and the motor ran like crap.

[Mercmarquis]

I'm not sure I'm gonna try recurving it just yet cause I think I got it wrong. When I hit it from a stop, it reacts much nicer with the initial set closer to 0*
around 7-8* is best. But as the rpms rise it pings. I still have to try adjusting the accelerator pump. I might also get a metering rod kit for the carb since its easy to change. I also NEED to get rid of my 2.73 open for a 3.73 posi.