Your exit hole, as a rule, needs to be twice the size of your air inlets.
I wouldn't take the chance of not cutting them, that motor is too expensive.]
Really depends on how "scale" you want to be.
When your running rich it wont matter that much, but after you get it tuned you run the risk of shortening the life of your twin without a place for that hot air to go.
ORIGINAL: Hill202
ORIGINAL: flyn_colorado
Hill,
Thanks for the fast response. That looks great!! Again, looks as if you did an outstanding job. I actually ordered my 1.60 twin yesterday and should receive it middle of next week. I just got off the phone with Keleo and he said there was one more left, so I ordered that today! :-) My bird is not as far along as yours is but I will post some pictures. Ill take them tonight. What spinner are you going to use? The Vortech? Are you planning on turning a 18x6?
Cheers
Thanks, yes a 3 inch vortech and a 18x6 zinger.
Thanks icrashbipes, they should make a clear cowl
I'm unsure about what size air exit holes to cut in the cowl, any suggestions? I read where someone did not cut any.