sprinkler modification to ro jett venturi

[George Waters]

I cannot find the article that tells how to modify the venturi on ro jett engines  Could it possibly be reprinted here? Thanks George.

[Dave_Trible]

Hello George.  I'm not familiar with the article you are looking for but wondering why you would want to modify it.  I've been using them for almost a decade and the only thing I alter is to drill the venturi inside diameter out a bit larger on the .61s, .67s and .76s (to .205). Stock is about .180-.183 if I remember correctly.  Beyond that they are exactly as furnished......

Dave