finally took the time to get this done hopefully will be riding soon. remove the breather and backing plate. center punched both bosses directly under where the holes that lead to throttle body throat . drilled a pilot hole with a 1/8 bit and finished with a 21/64 drill bit and than tapped 1/8-27 npt . and had two 1/8 x 1/4 compression fittings put on 5/16 stainless braided hose. routed to the center, used a 5/16 vacuum tee and a external breather purchased from advanced auto. wanted it kept clean looking and like the thought of keeping my engine oil full. that 1/2 to 1 quart low is not the proper repair.

 

Had you been having any trouble with how you had it?

I haven't gotten around to doing anything like that, maybe I should.

Nice finished look

 

suede
when i ride it hard get some oil out of breather now and then. not as bad as when I had the smaller head work. have 5000 miles on new engine after tune took off air filter and opened up throttle body could see it was dirty. used a cotton rag and rubbed it around intake area. rag has oil residue on it. used carb cleaner and cleaned all of intake area into the heads. used my bore scope and looked in cylinders there is a small amount of residue on top of pistons. not bad, when its gets warmer outside will get engine up to temperature and use some GM top engine cleaner and give it a thorough cleaning.

 

Very Nice job! How did you plug the hole that leads into the throttle body?

Also did you use a drill press or just stick it in a vice and hand drill?

 

that's tight man, can hardly see it!

 

used a drill press, wash all down after with brake cleaner, air dried and used high temp silicone in the pressurized cans to push the silicone all the way through.

 

Excellent! This is up next for me after seeing how much crud was in the piston & heads w/only 3k on it.

I've had it on a few rides now with the caps off, cant bring myself to putting them in knowing what I do. Haha

 

Thanks Todd, I gotta do something like this!

 

Looks good! I wanted to somewhat "hide" my modification,
so I used all black hose & AN fittings. I also wanted to control
where the blow-by went, so I routed it to a small black catchcan,
then from there to atmosphere. Here's a few pics of my install.
hope this helps,

T.

 

Looks good!