Need to save it, it is, by far, the best flowing carb I have ever seen.Best to get a different carb. Its caused by overtightening the carb
I made a fixture to do this. I more or less anneal the aluminum flange. I take a felt marker..aka "Magic Marker" and color the whole flange area, kind of like layout dye. Using a low flame on my torch, I heat the flange area until the marker disappears. then straighten the flange, slowly. Then I touch up the flange on a surface place with some 320 grit paper with WD40. BE PATIENT!!Well you can have a machine shop make you a 1/2” thick steel block with the appropriate holes in it. Place washers on your bolts or better yet studs and tighten evenly with slight heat till it sits on its new solid foundation, then don’t use a breaker bar to put it back on the tank..
Sounded great until you mentioned touching up the flange with sandpaper. That'll be a DQ in the tech barn almost guaranteed. This is a gasket surface that cannot be machined, scraped on, filed on, sanded, polished, etc. It must remain "from factory."I made a fixture to do this. I more or less anneal the aluminum flange. I take a felt marker..aka "Magic Marker" and color the whole flange area, kind of like layout dye. Using a low flame on my torch, I heat the flange area until the marker disappears. then straighten the flange, slowly. Then I touch up the flange on a surface place with some 320 grit paper with WD40. BE PATIENT!!
This sounds almost like shrinking .I made a fixture to do this. I more or less anneal the aluminum flange. I take a felt marker..aka "Magic Marker" and color the whole flange area, kind of like layout dye. Using a low flame on my torch, I heat the flange area until the marker disappears. then straighten the flange, slowly. Then I touch up the flange on a surface place with some 320 grit paper with WD40. BE PATIENT!!
I know Brian, I was doing this back in the 80's, and to me a visual tech is an opinion and you know what they say about opinions.....everyones got one. I'm not junking a $400. carb over some ones opinion. Being a machinist I know all about surface finish. I ran these carbs in WKA Nationals and been thru tech with them with no problem. I didn't do this for a performance gain, I did it to save a carb.Sounded great until you mentioned touching up the flange with sandpaper. That'll be a DQ in the tech barn almost guaranteed. This is a gasket surface that cannot be machined, scraped on, filed on, sanded, polished, etc. It must remain "from factory."
The reason for this, is that we used to angle mill the flange to promote better airflow (back in the '80s probably) until it was declared a visual tech item. Even very light sanding was being done to remove/disguise machining marks, so the powers that be back then made it a rule that this gasket surface was a "do not touch" visual tech.
I understand that...so was I. I'm just saying that it is not legal to sand that gasket surface. Not surprised that it slipped through tech. There are many things that do.I know Brian, I was doing this back in the 80's, and to me a visual tech is an opinion and you know what they say about opinions.....everyones got one. I'm not junking a $400. carb over some ones opinion. Being a machinist I know all about surface finish. I ran these carbs in WKA Nationals and been thru tech with them with no problem. I didn't do this for a performance gain, I did it to save a carb.
Done it for yrs,,been teched 100 times and never been dq'edFiling it flat can cause a dq
Rules are rules and i will stick by them. Thats why we always have either A a backup motor on hand or B a backup carb in the track box. Because when we win we dont want our little ones disappointed when tech dqs them.Done it for yrs,,been teched 100 times and never been dq'ed
Thats what I was thinking for a plate motor, I would think that about any carb from any motor builder would work on it. The restrictor plate is messing with the flow so much I wouldnt think it would be a big deal about what carb you are using.Dumb question but if it's a plate motor wouldn't any carb work just as good as another?