Racer Brown valve clearance.

[Retroboy]

Howdy.
Can some one tell me the correct valve clearance (Cold) for a Racer Brown ST21 cam shaft using the early 273 adjustable rocker gear. I'm in Australia so can't just ring and ask. Cheers.
Tony

 

[RustyRatRod]

I bet Tracy (fishy68) can. He's a big Racer Brown guy. If he doesn't chime in soon, maybe send him a PM.

 

[74duster360]

I have an ST-21 from Racer Brown, my spec. card shows,
Int. .016 Ext. .018 These are cold lash specs.

Jim at Racer Brown told me I could run them a little tighter if I wanted to.
Hope this helps.

Glenn

 

[fishy68]

What 74Duster said^^^. I have the ST14 and it's rated at .017 int and .019 exh and I experimented with it. Found .013 and .015 was as tight as I could go without hanging a valve open when hot