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The NEXT level of VE pump bombing

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Old Jan 24, 2005 | 11:04 AM
  #1  
jonmurr's Avatar
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From: New Lexington, Ohio
The NEXT level of VE pump bombing

I've finished installing the POD's on my cousin's 92, along with the HX35, 4" straight pipe and BHAF. I've maxed out all the VE adjustments listed here on the site, and the truck, though quite sprightly, is still very docile as far as smoke and EGT. (as in, he is unhappy with smoke quanitity. Yes, he is concerned with lack of smoke.) Egt around 1000.
Methinks the "problem" lies in the full power screw. This is a Reman Mopar pump, and the full fuel screw only went in a turn or so before stopped quite solidly. The idle is a bit low. (approx 650 rpm.)
I will be installing the -366 governor spring in the near future, and was wondering, if while I had the lid off, other things could be modified. I have read of couple of other modifications that could be performed while the lid is off, but nothing cohesive. I was wondering if the assembled experts could lead me in the right direction.
The first thing I thought of was adding some length to the screw with the TIG and then chucking the screw up in the lathe to get the top the right shape again.
Are there high resoultion illustrations available anywhere for the VE, or a comprehensive manual from Bosch?

Thanks
Jon
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Old Jan 24, 2005 | 11:25 AM
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ARedetzke's Avatar
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There should be a lock collar on the full fuel screw that can be taken off with a grinder. Take the screw all the way out and you'll see what I mean. Take that collar off, and then you should be able to crank it in a lot further.
AJ
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Old Jan 24, 2005 | 12:29 PM
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The lock nut and collar are gone. I have the bare screw wound into the pump untill it stops.

Thanks
Jon
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Old Jan 24, 2005 | 01:27 PM
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The little pin that sticks out of the front wall of the bore in the AFC acts as a stop for a lever inside the top cover of the pump. That lever can be ground down. This does basically the same thing as grinding the notch in the AFC eccentric deeper, but without the potential leakage problem that comes from the pin over-extending.

The only detailed VE info that I know of is a Bosch theory of operation manual that can be purchased from the SAE website. It has good theory info, but is light on specifics.
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