01-01-2007, 08:02 PM #1
Balancing channels on carbs manifold
What is the purpose of the balancing channels on carbs manifold ???
Some people fills the balancig channels, what benefit does it has???
01-01-2007, 08:48 PM #2
Carb Manifold Channels JB Weld
The use of intake manifold cross-over channels on the GPR manifold was to improve the smooth-ness of low speed carburetion. These cross-overs work very effectively for stock engine platforms.
However on a setup built for high performance, these cross-overs can significantly reduce inlet signal at high rpm. This reduction in high rpm signal is not a problem for stock engines, however it can cause uneven “W.O.T” fuel metering on a higher rpm modified engine platform.
In the testing done over the years on modified GPR's, it has been found that by simply blocking off these inlet manifold cross-over channels with JB-Weld can yield a big improvement in the accuracy of fuel metering especially during extended "W.O.T" passes.
Basically carb signal is increased as each carb is rendering to the signal from that cylinder.
btw, those carbs look familiar
Last edited by RX951; 01-04-2007 at 12:32 AM.
01-03-2007, 08:28 PM #3
is blocking off these passages legal w/ijsba rules for stock ?
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By 2&4strokepolaristech in forum Yamaha ClassifiedsReplies: 4Last Post: 09-03-2009, 09:29 PM
By Seanace1 in forum Polaris How To & FAQsReplies: 10Last Post: 07-04-2009, 09:21 AM
By WFO in forum Yamaha ClassifiedsReplies: 6Last Post: 05-09-2009, 10:48 PM
By mrjetskey in forum Sea Doo ClassifiedsReplies: 0Last Post: 05-26-2008, 11:08 AM
By kevski in forum Yamaha PWC Performance (2-stroke)Replies: 3Last Post: 01-15-2007, 03:55 PM