I have the 366 spring currently installed but I'm going to do the Denny T AFC delete. While I'm in the pump I want to do one more step up; the 4200 gov spring. Anyone have any leads on where to get it?

 

I was told you have to order it from bosch for a VW then have it clipped or something. I'm sure you can get it else where though. I'm wanting one too

 

Saw it on a site some time ago, can't remember what site for the life of me tho


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for some reason i think ive read somewhere that putting that gov spring in wont really give u much more cuz the ve pump cant fuel efficiently to that high of rpm. at least something along those lines. if you really want it though look up D&W Diesel Performance and see if they have a place near you. they are a bosch dealer.

 

In more than one place and from more than one person ive heard that the 4200 spring does nothing for you. As stated above the ve just doesnt fuel that high in stock form.

 

The VE isn't stock, I've got an AD150 supplying it and a Denny T AFC delete on it's way, I plan on re working the fuel return so that more fuel actually makes it to the pump instead of it all being bypassed by the fuel pumps regulator. I'm still using the stock return line that's a spaghetti line. I don't actually plan to take the truck up to 4k, just wanted the stiffer spring so it'd fuel hard at 3200 and not start to back off. Now if you're talking stock as in the cam plate and plunger; then yes; it's stock. Other than that I've opened up the fuel inlet and all that other good junk. I just want more fuel to make it to the pump than be bypassed and used as an "on demand" pump when this AD wasn't designed for it. That's the idea of it all atleast. Found a site last night and ordered the spring. It's just like everything else, some people love it, some people hate it. We'll see how it works for me, all else fails I'll still have the 366 spring. Also I ordered a complete set of 60# valve springs. I'm planning on getting a set of marine head bolts. I'm sitting at 38 pounds of boost with no regulation other than the wastegate, I would like to see 45 and I want a little extra insurance against head gasket failure. I plan on bumping the timing up once I get larger injector lines. They KSB spacer does wonders as is, just want some more .


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well i hope it works out for you. i dont have first hand experience with it but thats just what ive heard. id like to hear some feed back on how much you like or dislike it also by the way ive got marine head bolts too and when i got the package it came with one odd ball bolt that was bigger and longer than the others. idk if its like this with all of them but i figured id let you know. i just ended up using one of my old head bolts. just check to make sure its not cracked or anything.

 

Will do; I'll let you know. The most ive heard is that the throttle is extremely touchy that it makes it harder to drive on the street. But I think it's like anyone's older truck, they all have their hiccups and only the owner seems to be able to drive it .


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Your pump is stock in the way I was referring so good luck. Hope it turns our better than I have learned about.

 

Thanks, I've been contemplating a larger head and rotor and a modified cam plate while I was in there


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