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Old 07-23-2013, 08:18 AM
MikeyOrange88 MikeyOrange88 is offline
TT Enthusiast
Join Date: Jul 2012
Boat: 1988 Tristar 190 Sport (Closed Bow), 351W w/ GT-40's
Location: Southeast
Posts: 303
Originally Posted by thatsmrmastercraft View Post
OK, lets start from scratch on carb operation in our boats. The throttle lever causes the primary throttle blades to open and go fast. When approaching 3/4 throttle, the secondaries will open due to the secondary spring overcoming decreasing manifold vacuum. Location of the throttle linkage will not affect secondary operation.......only primary operation. Secondaries open strictly by vacuum.
Understood. I was trying to carefully craft the wording to indicate that a higher vacuum (lower pressure) would increase the degree that the secondaries would open (wider opening, allowing more air in. Correct? My wording was probably poor, but I stated twice that they are operated only by vacuum.
Certainly not a carb expert, but I do like to drive the boat fast! I've learned a tremendous amount on TT, and continue to, as I read it almost daily. Thanks for keeping us straight.

Sorry, can't put stickers on the boat. Heck, I've not been able to drill any holes in it yet.
1988 Tristar 190 Sport, 351W w/GT-40's, 1:1 Velvetdrive
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