Engine Problems, Please Help!!!!!
Burning Brakes
Joined: Apr 2003
Posts: 844
Likes: 0
From: Central KY
Mark,
I checked the resources you listed. Good stuff! I wonder if I can gin up a sensor that will give idle readings even if I don't want to weld a bung and instead only want to stick it up the tailpipe like they do at the emissions stations... Would make tuneups easy! Thanks!
I checked the resources you listed. Good stuff! I wonder if I can gin up a sensor that will give idle readings even if I don't want to weld a bung and instead only want to stick it up the tailpipe like they do at the emissions stations... Would make tuneups easy! Thanks!
Thread Starter
Advanced
Joined: Jul 2004
Posts: 66
Likes: 0
From: Belleville MI
Yep, my throttle is oping 100%...i had my uncle take it for a drive and we then looked at the carb and saw the back bowl was too full so we adjusted that. hopefully tomm i can get the distributor installed and timed and take it for another drive...Hope this michigan weather allows me to.
Thread Starter
Advanced
Joined: Jul 2004
Posts: 66
Likes: 0
From: Belleville MI
Yep the throttle opens 100%.
Put the new MSD distributor and Coil in today...Set timing to 34 degrees. Took it for a drive...its hard to tell if it is any different because drives are to far between. Next step is the air/fuel ratio. then i'm dynoing it again.
Put the new MSD distributor and Coil in today...Set timing to 34 degrees. Took it for a drive...its hard to tell if it is any different because drives are to far between. Next step is the air/fuel ratio. then i'm dynoing it again.
Safety Car
Joined: Jul 2002
Posts: 3,770
Likes: 3
From: St Louis MO
Stick an O2 sensor in the collector and read the output with a multimeter. My bbc runs good at around 900 millivolts. Any other method of carb tuning is guesswork. Also, the only time you need a large spread between the primary and secondary jet sizes is if you run a power valve plug in the secondary side. Otherwise, square jetting (or a size or 3 larger) is fine. But I agree with the others, it was prolly the timing gving a low HP number. Get that right and then work on the fuel mixture.
Brett
Brett
Brett
Brett
