Banging out big block
04-24-2011, 05:45 PM
Junior Member
SHOW GUEST
Thread Starter
Join Date: Mar 2005
Posts: 5
Banging out big block
I have a 482 big block that I ran 2 nights last season with my sons holley 1050 carb on it. It ran great. I ordered a new carb that was set up for my engine and it would launch great but would bang out shortly after it launched. We tried bigger jets and several trys with no success. The next week we put his carb back on and it started banging out again. Nothing else changed from last season. We checked plugs, valve settings, timing and a different coil. Nothing was found to be bad. Any ideas?
04-24-2011, 06:45 PM
Senior Member
EXPERT BUILDER
Join Date: Dec 2010
Posts: 345
Did you check fuel. Pressure, volume, ect.
04-25-2011, 03:50 AM
Junior Member
SHOW GUEST
Thread Starter
Join Date: Mar 2005
Posts: 5
Yes, we pulled fuel line and ran pump into a fuel jug untill fuel cell was empty. It ran a full stream the whole time.
04-25-2011, 04:49 AM
Senior Member
RACING JUNKIE
Join Date: May 2003
Location: Coldwater, MI
Posts: 2,998
Ohm he plug wires, and maybe check the cap and rotor. Seen a rotor crack this weekend, causing a issue like your having.
04-25-2011, 10:26 AM
Member
JUNIOR BUILDER
Join Date: Jan 2006
Posts: 98
carb
have you tried a tube from front vent to rear with notch cut at top
04-27-2011, 04:27 AM
Junior Member
SHOW GUEST
Thread Starter
Join Date: Mar 2005
Posts: 5
We have not tried the vent tube-but will. Also, I'll take cap off and inspect for cracks. Thanks guys
04-27-2011, 04:47 PM
Senior Member
EXPERT BUILDER
Join Date: Dec 2010
Posts: 345
There is something that i have seen before is rpm and retard chips that go bad.
04-27-2011, 05:02 PM
Junior Member
SHOW GUEST
Thread Starter
Join Date: Mar 2005
Posts: 5
I'll try different chips if dist cap looks good. Thanks
05-04-2011, 04:27 AM
Junior Member
SHOW GUEST
Thread Starter
Join Date: Mar 2005
Posts: 5
I found out I have at least 2 broke valve springs. Some check to be a little weak. Thanks for all the help.
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off