Ask A Question
 
Sailor
Junior Boarder
Blog Posts: 0
Forum Posts: 24
Rating: 0ApplaudCriticize
Posted 2 Years, 7 Months ago #1
The 2 intake tracts behind the rotary valve have a step relief on the bottom of both openings. Thewre is also a very small hole drilled at the bottom of the step. Does anyone know what purpose this serves? It appears to be somewhat restrictive to a clean flow pattern. Especially since it affects the opening of one tract and closing of the other.
The topic has been locked.
bluntedboy
Junior Boarder
Blog Posts: 0
Forum Posts: 23
Rating: 0ApplaudCriticize
Posted 2 Years, 7 Months ago #2
Leave it alone, it serves as a damper against crank turbulence. Unless you are in to racing.
The topic has been locked.
ppfpooghn
Fresh Boarder
Blog Posts: 0
Forum Posts: 13
Rating: 0ApplaudCriticize
Posted 2 Years, 7 Months ago #3
I believe they are there to help the distribution of oil from the brass nozzles. I made mine go away and it seemed to make it somewhat pipey. But more top end.
The topic has been locked.
CalebSavannah
Fresh Boarder
Blog Posts: 0
Forum Posts: 17
Rating: 0ApplaudCriticize
Posted 2 Years, 7 Months ago #4
Every case ported engine I've seen has that part removed. I asked the same question a couple of years ago and I believe Mr. HPT was suggesting that it is there to help the engine start easily. My personal conclusion is to remove it.

On Sat, 25 Nov 2000 18:51:56 -0600, 'Just Terry'
The topic has been locked.

Related Posts:

Spread the Word!

Four out of five users would recommend us to a friend. Shouldn't you?
Link to Us    Tell a Friend
The Content on this site is provided for general information purposes only. Your use of the Content, or any part thereof, is made solely at Your own risk and responsibility. By entering this site you declare you read and agreed to its Terms, Rules & Privacy.
Copyright © 2006 - 2010 My Jetski Buddies