P Series Bosch pumps

Charles said:
So if you want to adjust pump output balance you loosen the barrel bolts and turn the barrel (altering the helix to fill port relationships) until each cylinder moves the same?

Yes

So when I see reference to "turning the barrels" is that people rotating them so that the fill ports contact the helices at increased plunger stroke depths, all else constant?

Correct

And if so, how do these people just assume there will still be good balance with all the barrels bottomed out this way?

Good question

Do they just assume perfection in machine work between all parts?

That assumption would be a false hope. Even new b&p sets vary among 6 different ones, that's without factoring in thousands of miles of wear.

Speaking of which.... as if machining a good P&B weren't hard enough, cutting freakin slots in the plungers and then not having sealing problems at the edges of those slots, seems crazy.
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I'd still like to see this machining process. The machine work and metalergy involved in Bosch b&p's that will maintain within 10% of max output to well over 250,000 miles blows my mind. The Germans definitely have the processes figured out. I've torn down a ton of virgin pumps over the 200,000 mile mark and they show virtually no wear. Not only on the plungers, but also the cam, rollers, tappets, etc.
 
Snedge said:
I suck at magic. Crud Crud Crud :(
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I've met your wife Jeff...you must be skilled at some form of magic. :Cheer:

Back on topic, I've learned a lot in this thread that I was only questionable at best about before. Thanks CompD!!:cheer:
 
I bet she's nickels and dimes ya to death though. :hehe:
 
bsmith said:
What did charles get banned for?
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What?? No.
I liked Charles. I hope he can come back. Really. I talked to him the other day and he seems nice. The thing I learned about Charles is that he doesn't see the forums as a social setting. Just words, and I can see his point.
He was very cordual with me. We said bad words and stuff but thats ok. Maybe bad words got him banned.
 
Snedge said:
What?? No.
I liked Charles. I hope he can come back. Really. I talked to him the other day and he seems nice. The thing I learned about Charles is that he doesn't see the forums as a social setting. Just words, and I can see his point.
He was very cordual with me. We said bad words and stuff but thats ok. Maybe bad words got him banned.
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Ditto to everything you said.

I didn't like him at first but he grew on me.

Super knowledgeable and took the time to explain when others couldn't or didn't want too.
 
it's what happens when someone voices there opinions about vendors products, peoples "stories" and a combination of attitude/ego and making a few dumb comments.... seems like sombody figured he needed time to cool off
 
Seems like every three months or so he gets it....

I guess no-one has the big wooden cutout training aid to snap photos of?

I have a B/C model CAT pump in my tool box I thought about snapping photos of for this thread.

Also for others reading this, Weston/Smokem did an excellent job of explaining governor function in a thread or two. It would be worth finding if it didn't dissappear.
 
biggy238 said:
Also for others reading this, Weston/Smokem did an excellent job of explaining governor function in a thread or two. It would be worth finding if it didn't dissappear.
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I would appreciate reading that. Anyone have a link?

I learned the barrel/plunger relationship, but my understanding of the governor is still incomplete.
 
Several of Westons threads were removed when he left the forum this time last year. It may or may not be available by search.

I would like to see a comparison of AFC tuning compared to different driving/racing situations, since the afc is primarily in control when so equipped.
 
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