Did the throttle plate bleed hole mod...one word..WOW!
I decided to go with a 1.2mm bleed hole & see how it did. I pulled the slide & all related hardware, & taped the various openings. I then used a pin-vice (finger drill) to make the hole First pass was a 1.08mm & I followed that with a 1.2mm.
Here's the finished product...
Air filter side:
Intake boot side:
Carb rack:
Sucker idles in the high 12's now with the pilot screws 2 turns out. Hovers about 13 under hard acceleration, & cruises in the mid 14's. I'm beyond happy with this mod!
The CV's are much better balanced with the Uni 4229 pods & 813 cams now. CV carbs can be made to work well with intake & cam mods, but it takes some work.
After the carbs were reinstalled I also checked the float heights by the sight-tube method, & was disappointed to find a 1.5mm differential between the port & starboard carbs, even though both measured the same statically when the bowls were off. Bummer. Gotta address that. It sure points out the value of the sight tube method, though.
The carbs will also need to be sync'd, didn't have time to get to that yet.
Is a 1.2mm bleed hole optimal? Dunno. But is sure is WAYYYYYY better than no bleed hole. I'll leave it to tuners like TPUSA to dial it in. Get going on this, Carlos!
