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 91 
 on: April 22, 2014, 10:33:21 AM 
Started by daddyracing - Last post by Mowerpar
putting a 1.5 intake valve isn't just a drop in though.  It takes a fair amount of work, but I think it's worth it.

 92 
 on: April 22, 2014, 10:11:09 AM 
Started by daddyracing - Last post by Huffy044
My 8 hp intake was 1" from factory, I used a 1 1/2" in place of it, built a cutter to releive the head the valve was so big. Worked pretty good for me, use stock size on exhaust. I also went from 5/16" stems down to 1/4", better flow, less weight,=smaller springs, less hp to move valves.

 93 
 on: April 22, 2014, 08:33:50 AM 
Started by boomboom - Last post by Jim Knutson
I have seen some older oppy carbs that had a thicker plastic block in the pump, between membranes, that will pump as much as needed for any oppy build.

 94 
 on: April 22, 2014, 08:13:31 AM 
Started by boomboom - Last post by Jeff McKelroy #55A
I always had better success not using the carburetor-mounted fuel pump and running an external fuel pump.  Just strip off the original pump, flip the steel cover to block off the feed hole. Next, you see that boss to the left as you are looking at the fuel pump? Carefully drill straight through with a small bit to the fuel feed passage, then tap the boss with a 1/8" pipe tap.  The stock pumps are garbage for what we do.

 95 
 on: April 22, 2014, 07:04:42 AM 
Started by boomboom - Last post by boomboom
Running the stock air filter so the stock vents on top are not blocked.

 96 
 on: April 22, 2014, 06:18:18 AM 
Started by boomboom - Last post by PJG56
Do you have carbs externaly vented?

 97 
 on: April 22, 2014, 03:58:36 AM 
Started by jackson - Last post by jackson
for sale nikki 2 bbl carb has work done by g-team 100 shipped
send text or call 1 989-549-1915

 98 
 on: April 21, 2014, 10:57:29 PM 
Started by daddyracing - Last post by crazycraftsman
Yes, Mike at Precision Cams and Carol at EC are both great people to deal with. The only two places i,ve dealt with and haven't had any problems.  smile
Owen

 99 
 on: April 21, 2014, 09:42:59 PM 
Started by daddyracing - Last post by daddyracing
Alright thanks for the help guys. And just curious have yall ever used precision cams for parts? Or just ec

 100 
 on: April 21, 2014, 09:30:09 PM 
Started by boomboom - Last post by boomboom
Ok guys I need your help. New build, 16hp oppy, I have the motor set with the carb sticking out of the left side of the hood. I have 2 carbs Im playing with - 1 older with 3 bolt fuel pump and 1 with 4 bolt fuel pump. The 3 bolt is bigger but for some reason it will not pull the fuel.  Both carbs and pumps are fresh rebuilds. The 4 bolt pulls the fuel but I run out coming off the corner (this being because of the direction of carb....float raising the needle etc). Now....I ran 5/16 fuel line from tank to carb with inline filter. Tank is mounted under seat BUT is lower than the carb. Should I go back to 1/4 fuel line? Is it too much for the 3 bolt to pull? My vacuum hose to carb is pulling from the #2 boss on the intake (NOT the block) that I drilled and tapped. I recently read a post about a reserve tube off the side of the carb which I will try....but my concern is I know these things like to be on the rich side....NOT the lean side so Id rather run the 3 bolt. Any ideas? Any help is GREATLY appreciated. Thanks in advance!!

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