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Old 07-23-2015, 05:10 PM   #241
Fasteddy46
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Default Re: Holley 19XX Series Carb Stuff

Oh the book says the gasket sets for both of the carbs are the same. The kit May come with multiple flange gaskets though. If anyone know the difference in gaskets I'm hoping this will finally fix it.
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Old 07-23-2015, 09:25 PM   #242
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Default Re: Holley 19XX Series Carb Stuff

You've mentioned several times and been asked at least once what your vacuum was at idle. I don't recall seeing an answer. So let's pick up from there with a number we can sink our teeth into. We also need to know if the gauge needle is steady at idle or if bounces wildly. And by idle I mean, hot engine, choke wide open and engine speed at 800 rpms or lower. That May not be possible with your current situation, but you'd need to get as close to all that as you can to see an accurate reading on the gauge. Multiple carbs tried with the same result means either the carb isn't the issue or none of the carbs are correct for your engine. My money is on option a.
You say you also messed with the timing, but you didn't indicate what condition the points and condenser were in or what you set the dwell angle to. My suggestion, get all the ignition related stuff that you have the ability to adjust set to factory specs and leave them there. Once your dwell and timing are set, they're set. You could put 30 different carbs on there, and the timing and dwell wouldn't be affected in the least. On the flip side, an incorrect dwell angle or timing that is too far advanced or retarded can certainly have a detrimental effect on your fuel delivery system no matter which carb is on there. You have too many variables at play here. You need to get some base lines established. Set dwell angle, basic timing and spark plug gap to factory specs. Re-verify correct plug wire routing. Then take vacuum gauge readings as indicated above and post them here.
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Old 07-28-2015, 06:27 PM   #243
Fasteddy46
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Default Re: Holley 19XX Series Carb Stuff

Ok. My appologies I thought I posted te reading but as I look it over I did not. I checked the vaccuum, set plugs at the factory gap set the timing all that stuff but I don't remember off th top of my head what they were. I will go back and check them out again and put te readings on here. I will probably not get a chance to do so until the weekend. Thanks for the help so far. I'm really hoping to get this hammered out soon.
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Old 07-25-2016, 08:03 AM   #244
Mlofton
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Default Re: Holley 19XX Series Carb Stuff

Help!!
I have a 1970 Scout 800a.
It has a 232ci 6 cylinder and I need to id the carb so I can get a rebuild kit.
Can anyone assist me from these numbers on the carb?
It's a Holley and I think its a 1940 but not sure.
6286 1249
421714-c91
thank you
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Old 07-26-2016, 05:37 AM   #245
Mlofton
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clip Re: Holley 19XX Series Carb Stuff

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A picture of the number.
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Old 07-26-2016, 08:43 AM   #246
1975IH200
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Default Re: Holley 19XX Series Carb Stuff

Quote:
Originally Posted by mlofton View Post
help!!
I have a 1970 Scout 800a.
It has a 232ci 6 cylinder and I need to id the carb so I can get a rebuild kit.
Can anyone assist me from these numbers on the carb?
It's a Holley and I think its a 1940 but not sure.
6286 1249
421714-c91
thank you
Your carb is a Holley model 1920, Holley list no. 6286.

421714c91 is the IH part number.

My book shows this carb was originally used on a 6-258 engine.
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