Removing recirculation system

guy74

Senior Chief Petty Officer
Joined
Jul 12, 2007
Messages
794
Hi,
Is the recirculation system necessary on my 100XP? The older motors I work on don't have one. If I can I'd like to remove the hoses and checkvalves and plug off the ports. Is it possible to remove the recirculation valves and hose with no adverse effects or should I just leave it alone and live with the extra clutter? I've read some posts by some of the knowegable people on this forum that make the statment that most of them are plugged up anyway. That got me thinking about just removing it so the motor would be like the older ones.
Sincerely,
Brian
 

F_R

Supreme Mariner
Joined
Jul 7, 2006
Messages
28,226
Re: Removing recirculation system

Why would the mfr spend all the extra money to put the system on their motors without a good reason? I have worked in manufacturing. Bean Counters rule.
 

grid

Petty Officer 1st Class
Joined
Oct 29, 2002
Messages
232
Re: Removing recirculation system

The theory is that the recirc valves will draw the puddled excess fuel and running it back through the engine. Your old crossflow probably had them plugged in the first year, so plugging them yourself probably won't help. Or hurt. I can't imagine what you'd achieve by that modification, anyway. By now there's so much piston clearance you're probably seeing fuel spots on the water and the engine sounds like somebody's playing castanets in it. In effect, it's already like the old ones--though I certainly understand what you mean about the clutter!
 

flabum

Chief Petty Officer
Joined
Feb 17, 2007
Messages
567
Re: Removing recirculation system

There are not many hoses in the recirc system, no real reason to do away with them.
 

Harker

Chief Petty Officer
Joined
Sep 21, 2003
Messages
452
Re: Removing recirculation system

I understood the recirc system to pull puddled excess fuel and oil, up to the upper crank bearing for lubrication. I'd try to make sure the valves and hose aren't plugged and keep it on there.
 
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