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Tractor Pulling Discussion Forum

Fuel pump question

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6030tom

04-11-2005 19:16:56




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On the stock Bosch fuel pump for a 6030 there is valve that is opened by the boost pressure in the intake manifold. Can it be removed or even easier, can it be adjusted to be fully opened all the time? any help is appreciated. Thanks




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SUPER M PULLER

04-13-2005 15:22:31




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 Re: Fuel pump question in reply to 6030tom, 04-11-2005 19:16:56  
If you are going to make a pulling pump out of it, you can take the aneroid off and put a plate on the top of the govenor housing to close up the hole. Most of those pumps had a automatic excess fuel device that worked with the aneroid and was controlled by oil pressure. You can leave all that alone and only remove the aneroid and then all your fuel adjustments will be off of the screw in back of the govenor. Hope this helps with your question.

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6030tom

04-14-2005 17:32:11




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 Re: Fuel pump question in reply to SUPER M PULLER, 04-13-2005 15:22:31  
Does the valve just sit on top, or is there any kind of shaft or anything that goes down into the pump?



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SUPER M PULLER

04-15-2005 15:35:25




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 Re: Fuel pump question in reply to 6030tom , 04-14-2005 17:32:11  
The aneroid can easily be removed by taking the four bolts out that hold it on top of the pump. The lever inside the pump that the aneroid rides on will just sit there and not bother anything. You may have to wiggle the aneroid to one side as you raise it up to clear the rod but that should be all you have to do to remove it. The aneroid is only used to hold fuel back until a predetermined boost is reached and then it moves out of the way. All this is for is to cut down on excessive black smoke when we are not under boost conditions.

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6030tom

04-15-2005 19:05:35




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 Re: Fuel pump question in reply to SUPER M PULLER, 04-15-2005 15:35:25  
Thanks a lot



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Bryce

04-12-2005 14:17:22




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 Re: Fuel pump question in reply to 6030tom, 04-11-2005 19:16:56  
I agree with red but really the only way to do it is to add pressure at that line.There is a stop inside the pump that will not allow the rack to go to full fuel until a predetermined amount of boost pressure is acheived.It only takes approx. 3 lbs of air to do this.Good luck.



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Redman

04-12-2005 21:35:38




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 Re: Fuel pump question in reply to Bryce, 04-12-2005 14:17:22  
talked to a friend today that said if someone wants to bypass it as a test to see if it makes a differecr you can rig a short hose with a grease zerk on the end and pump it full of grease.
he said it is not pretty,but it will work.



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G/MAN

04-13-2005 07:43:59




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 Re: Fuel pump question in reply to Redman, 04-12-2005 21:35:38  
I would think it would be easier, cleaner and better for the aneiroid to use a pressure-regulator and connect it to shop air.



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Redman

04-13-2005 10:29:01




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 Re: Fuel pump question in reply to G/MAN, 04-13-2005 07:43:59  
i was talking on the track testing.



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G/MAN

04-13-2005 13:42:15




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 Re: Fuel pump question in reply to Redman, 04-13-2005 10:29:01  
Pumping grease into the aneiroid on a pump worth how many thousand dollars? How about an air bubble?



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Redman

04-13-2005 18:50:18




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 Re: Fuel pump question in reply to G/MAN, 04-13-2005 13:42:15  
the aniroid valve can be changed,and it is a part of the pump but it is not the pump.
last time i replaced one it cost a 100 dollar bill,this was on a field tractor.



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G/MAN

04-12-2005 11:04:10




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 Re: Fuel pump question in reply to 6030tom, 04-11-2005 19:16:56  
What you're referring to is the aneiroid system. It references intake manifold pressure and uses it to dictage how much fuel the pump can deliver at less than full boost conditions. At lower engine speeds and while the engine is accelerating (low-boost conditions), fuel delivery is limited in order to minimize the amount of black smoke (unburned fuel). I've never played with aneiroids myself, but I don't think messing with it is going to give you more power if that's what you're thinkg, as maximum fuel delivery is adjusted at the governor rack itself. You need to get in touch with someone that is familiar with the Bosch P7100 pump before turning screws at random.

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superbn

04-12-2005 10:00:06




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 Re: Fuel pump question in reply to 6030tom, 04-11-2005 19:16:56  
I don't have any experience on a 6030 but it sounds like when the boost pressure get high enough it restricts the fuel. Why don't you just block off the line so it reads no boost. BH



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Redman

04-12-2005 10:48:45




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 Re: Fuel pump question in reply to superbn, 04-12-2005 10:00:06  
backwarks,it will not give full fuel til it gets boost.
i think it can be bypassed but not sure how.



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superbn

04-13-2005 15:34:02




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 Re: Fuel pump question in reply to Redman, 04-12-2005 10:48:45  
Is there any way to fit a schrader valve between the pump and manifold, after it hit 3lbs of boost it will hold that so it reads boost.



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G/MAN

04-14-2005 10:45:15




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 Re: Fuel pump question in reply to superbn, 04-13-2005 15:34:02  
Why not just pull the cover off the top and rig a stop to keep it in full-fuel? Then you don't have to worry about losing the air pressure.



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Redman

04-13-2005 18:52:08




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 Re: Fuel pump question in reply to superbn, 04-13-2005 15:34:02  
should be able to rig up some sort of check valve to get the job done.



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