Quote:
Originally posted by Eljaro
If what you have is a bog or stutter, you may want to check your accelarator pump setting on your Holley. Check the play for lever to the actual pump, check the cam, it has two or three positions for more or less inmediateness and also see what injectors you have ( on mine , a 850cfm they are #31). Also check your main jets. If they are too small (white plugs indicate a lean setting) you will have accelleration problems too. I had a similar problem, which cured itself when I replaced the #76 jets my mechanic had thrown in there for I do not know which reason for a set of #85 jets. Stefan
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Stefan - I think you may be onto something.
Thanks to everyone else too, for all the comments. I have moved the MSD wires per Bob Putnams sugestion, changed out the wires to new Southern Automotives 8 mm wires (actually this was for looks), retorqued and tightened the plugs, and reset the timing (which was advanced off spec maybe 10 degrees).
As I drive the car and get more familiar with it I am starting to get a better sense for it. I just got back from what I call the "25 cent" tour - a lap around my township - slowly trundle out to the main drag to get the passenger oriented, then turn left onto the main drag (Rt 42) go about a 1/2 mile, then right onto a long sweeper (real fun) onto the AC Expw'y , " blast off " onto the AC Expressway for about 3 miles, where I really let 'er rip, and then jump off at the first exit - 25 cent toll. Then trundle back home. Awesome.
The car absolutely comes on hard from about 4000/4500 to 6000, where the MSD chip cuts out - I'm sure it would keep pulling..
Now, I am pretty sure the low end stumble is carb or cam..... it is still very driveable - it's not even really a stumble - just not as much power as the upper rpm range. I think now I need to be looking at fine tuning the carburation.
Is there a good DIY website I can consult for this?
My knowledge of carbs is limited to my days racing a Triumph Spitfire - the old twin SU carb setup...the Holley looks positively complex to me. Can all adjustments and jet changes be done with turkeypan in place?
Comments as always, appreciated.