[Vwdiesel] Diesel octane or why can you run a diesel engine

[SLATERSFB at aol.com]

Nothing major on this one. The cast steel part at the discharge end of the 
pump is sealed to the aluminum part with an O ring. After years of vibration it 
finally failed, leaking fuel. Still worked OK; just pissed fuel. I removed the 
steel part, cleaned surfaces & replaced O ring. Lapped check valves with 
tooth paste while I was at it. Assembly is tricky - lots of parts to coordinate.
As for modification; I wouldn't, except for tweaking the fuel screw. The 
inside is simple in design, but very complicated in the way the different parts 
interact with each other. Not like a carburetor or gasser fuel injection. TD 
pumps have additional functions that respond to boost pressure. I've not been 
inside one of these yet. 
Get an old pump if you can find one. You will need to make some special tools 
to disassemble it; part of the fun. Very beautiful inside, German precision 
at it's finest. Excellent alloys that last through decades. Hard to conceive of 
the number of revolutions in it's life. 
A low mileage pump I would leave intact. Mine was high mileage and soaked in 
mouse piss. LOL Very corroded & rusted, but good to learn on. Good luck and as 
Hagar says, "have fun".

Bob in the entire state 

******************

Bob,

What did you do on the pump your repaired? I'm hoping to pickup a spare pump 
along with other parts next week, so I may have something to practice on 
(although 
it's a low mileage pump from an '82 Vanagon, so might be too nice to mess 
with). My 
TD pump ran ok, but since I'm rebuilding the engine from ground up, I'd like 
to find 
out about what I can do to the pump, without spending a ton of $$.

On 20 Mar 2005 at 17:51, SLATERSFB at aol.com <SLATERSFB at aol.com> wrote:

> Thanks, Hagar. I am honored.  :-)
> I also have refused to pay $2000 American for a new pump. I have had 
several 
> apart for repair with success. The pump in my daily driver was repired by 
me 
> over a year ago & is still doing the right thing by me. I have just 
completely 
> disassembled an old 107 and put it back together. I learned a lot.
> As for modifying my understanding - I am always ready to learn. But 
whatever 
> I learn must make sense to me. I accept very little on faith.
> Something for you to consider: swirl chamber. Turbulance there is created 
by 
> stuffing 400cc of air into a space the size of a bottle cap, through a hole 

> the size of a pencil. This happens after intake vakve has closed.
> At 600 rpm idle -  5 times per second.   Amazing.
> 
> Bob in the Entire State
> 
> ****************************
> 
> Ignition begins when injection begins. --- Bob in Entire state.
> 
> Bob  can I hagar  interest you in joining the "PUMP GANG" ?   we are a 
group
> who refused to accept --that the Pumps could not be done by  DIY  fanatics.
> 
> We say BULLSHIT  --it was made by MAN it can be fixed by MAN. (pun 
intended)
> 
> I was quoted 5000 dollars Canadian for a pump for my OLD  1982 1.6 L NA 
> Rabbit 
> 
> that did it  --I joined the Pump Gang --- and driving by that station sign 
> with the 
> price`?   at 78 miles to a gallon imp ?  in a 4 door 1984 Rabbit  1.6 L 
turbo 
> -------?
> 20 years old and purring like a kitten ?---reminds me of FLASHDANCE   I 
> arrived.
> I made it .   OK OK so I make it out more than it really is ---but the 
pride 
> and joy is
> showing ---it was a LOT of reading and experimenting.  To me ? it is like 
> winning
> a GOLD medal in the diesel olympics..
> 
> So BOB be prepared to modify your understanding of how things work  
----like
> a lot of us.
> 
> PS :    Injection point and point of ignition  are NOT the same.    And 
> Flashdance ?
> I saw the Royal Ballet of Copenhagen  ---and I doubt that any of those 
dames 
> could spin on
> shoulderblades like that. ---And NO stealership can TUNE an old Rabbit to 
my 
> satisfaction
> NO how NO way.
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