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Author Topic:   KSE tandem pump, bypass or not?
worldcom
Dirt Maniac

Total posts: 148
posted March 28, 2005 07:05 AM  
I've seen the pump with and without an external fuel bypass. The unit states it has an internal bypass so why are guys also running another one?

NJantz
Dirt Forum Champ
Total posts: 755
posted March 28, 2005 07:28 AM  
We couldn't ever get the fuel pressure set so we had to go to the Barry Grant bypass regulator with our KSE fuel pump.

2nd2none
Dirt Forum Champ
Total posts: 755
posted March 28, 2005 08:13 AM  
the KSE pumps are notorius for the fuel pressure not setting. The spring that holds the pill in will become weak and will allow more fuel through. The simplest way to do it is with an external regulator.

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted March 28, 2005 09:18 AM  
The internal bypass works but it is by far more consistent to do away with the internal bypass and run an adjustable regulator. A lot easier to adjust as well.

dirtslinger66
Dirt Maniac

Total posts: 200
posted March 28, 2005 06:34 PM  
I agree I fought mine for weeks up and down. I then bought a Barry Grant bypass and problem solved.

sdracer12
Dirt Maniac

Total posts: 180
posted March 28, 2005 06:49 PM  
Yes, me too, lol. The internal bypass works for a while, but it's not reliable. We changed mine to the Barry Grant dual regulator and it works perfectly now. The Barry Grant is easy to get dialed in with the seperate idle jet and the adjustable high pressure setting. We had to go lots bigger on the idle jet than what it came with, though. I think our idle return jet is like a 90 now, to get the idle pressure down under 3 psi, at 1250 rpm.

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