finally found a bosch mechanic online very near me to do the spring for 50 bucks. He did have a question though. Is the spring that all of you who have this mod, a bosch item or some aftermarket item? Is there a bosch item number I guess I'm asking.

thanks,

brad

 

Bosch # 1-464-650-366

might as well have him grind the foot on the AFC lever as well.


Pat

 

Yes - grinding is good

 

He's a Bosch certified mechanic, so I doubt he'll grind the foot. Probably doesn't know anything about that kind of modification. If I don't plan to go over 30 lbs of boost and not put in POD's how will the foot benefit me? I have adjusted all the AFC stuff for fast fueling and believe me it is very strong on the bottom. What will I gain with the foot? more boost? Thats not my ultimate goal. I can get more from turning it up if I need to.

thanks,

brad

 

i didnt grind it on mine.

 

the grinding on mine added a bunch more lower end and a little smoke if you romp on it from a stop. but I changed so much that one day and didnt test drive between items that I'm not 100% sure what did what.

All I know is I like it now still looking for more lower end

 

mine smokes alot more (when i want it to) and it seems to pull a lot harder after each gear shift.

a lot more enjoyable truck to drive now with the governor spring, foot grinded, shaved washer, AFC at 100%, and throttle linkage tightened up.


Pat

 

call PDR and get one. fast easy order! jiMMy

 

Grinding the foot off the AFC lever increases the total travel of the governor lever. This allows you to make more power without turning the pump up and the problems that go along with it like runaways and not being able to get the idle slowed down. Turning the pump up only moves the governor arm further towards the full fuel position, it does not increase the range of motion. This is why you eventually reach the point of runaway if you keep turning the full fuel screw. The only time I would recommend NOT grinding the foot during a 3200 RPM spring install is if you live in a state where the truck has to pass a "snap test" for opacity.

Michael's truck is set up great (if I do say so myself ). It's got power you can be happy with, reasonable EGT, reasonable smoke (you can drive it clean if you want to), and still gets good mileage. Not bad for under $200 worth of parts plus a set of gauges.

 

Exactly what Wannadiesel said My pump is brand new and unmolested (ok, ok, I MAY have tweeked the full boogie screw toward the lock collar today... ) and I'm gonna grind the afc (and prolly void my warranty ) while leaving the full fuel lock collar on. I like the idea of being as far away from runaway as possible while still having more power. Plus, if I re-paint the afc bolts, maybe they'll still warranty the pump if it fails ....as an aside, I ground the snot out of my spare fuel pin the other day and I'm all with the gains!
g

 

Is there a place i can find with pictures of this mod? I want to do it, but i have no idea what or where this stuff is.

 

Nobody's taken good pics yet that I know of. Den was too chicken to grind it.



This is all I've got. The AFC lever is circled in yellow. The red line points to the "foot" that gets ground off. Mine is ground so that the area where the foot was is now in line with the rest of the lever.

 

Oh, so the entire pump has to come off the ctruck?

Thanks for the pic by the way.

 

no the pump stays on you just need to take the top of it off. thats where all the work takes place