Author Topic: OMG!!! 560hp/980tq IDI!!! (Read 6078 times)

cyrus #1 · « **Reply #15 on:** February 03, 2007, 04:46:01 pm »

Don't forget that you will lose a bit of mileage during the winter as well due to the winter fuel.

jtanguay · « **Reply #16 on:** February 03, 2007, 06:10:25 pm »

yea.. sometimes people forget winter economy of gasoline powered cars when driving diesel... my winter economy was always super low... but thats because i had a heavy foot

Vincent Waldon · « **Reply #17 on:** February 03, 2007, 06:17:54 pm »

Huge thread on dynamic timing and additives to thicken diesel here:

http://www.vwdieselparts.com/forum/viewtopic.php?t=4868

burn_your_money · « **Reply #18 on:** February 03, 2007, 06:34:47 pm »

Quote from: "Vincent Waldon"

Huge thread on dynamic timing and additives to thicken diesel here:

http://www.vwdieselparts.com/forum/viewtopic.php?t=4868

To save you some time

Quote from: "hagar"

At 500 RPM pump --I set mine at 3.1 Bar. ---BUT I spread out the difference from max RPM to idle.

1000 RPM should be 5.3 bar .

To adjust the pressure -control valve is --apple pie. A small pin drift and a small hammer --drive it down and it increases pressure.---Valve unsrews like a sparkplug --to reduce pressure`? --just drift it up ? --simple as apple PIE --IMHO. --I make sure that the two "O" rings are in good shape.
I drift it down real carefully a few thou at the time.---while watching pressure. I learned that the Valve is the ONLY ajustment we can do to pressure --make sure the orifice is clean. --and the right type.

And here are some pictures explaining it

Turns out I can't find the one I was really looking for, sorry folks

foxracer1 · « **Reply #19 on:** February 03, 2007, 06:46:22 pm »

So would if you added an electric pump can this be a way of setting it after that? What are the specs?

burn_your_money · « **Reply #20 on:** February 03, 2007, 06:50:00 pm »

In regards to a pump (also mentioned in the above link) if you get a mechanical gas pump for a carbed engine off an old mk1 it will bolt onto the block right beside the vacuum pump. There is a block off plate there now. The person who posted it mentioned that it seems as if the pump should have been there, but the bean counters at VW nixed it.

foxracer1 · « **Reply #21 on:** February 03, 2007, 09:38:58 pm »

So did my adding 14 or psi to the IP do more bad than good?

zagarus · « **Reply #22 on:** February 03, 2007, 10:02:27 pm »

im thinkin i might turn my fuel down a little more.

craiggroombridge · « **Reply #23 on:** February 03, 2007, 10:03:34 pm »

personaly I add castrol 2 stroke oil to my tank for lubricity and howes for my diesel conditioner, extra fuel supply is good to a point, not sure where to draw the line. I guess the more psi in the ip would add to the injection pulse, possabily a drip or two more ?? in fuel this I would not know.
I'm sure some one knows what psi is best

Craig

jtanguay · « **Reply #24 on:** February 03, 2007, 11:54:14 pm »

well andy2 told me that when pumps are calibrated on the test bench, a 5 psi or so fuel supply is given to the pump... i'd say that anywhere between 4-7 psi shouldn't be too detrimental at all.

good call on the 2 stroke oil

has your pump ever been rebuilt??? are you filling up with ULSD?

craiggroombridge · « **Reply #25 on:** February 04, 2007, 08:36:32 pm »

my car is in a project mode now the at work we use ulsd and we add 2 gallons of howes and 4 liters of 2 stroke to every 8000l of fuel for the track machines, to my car as far as I know the pump has never been touched, it only has 460,000 kms, do you think it needs one?

jtanguay · « **Reply #26 on:** February 04, 2007, 10:18:51 pm »

Quote from: "craiggroombridge"

my car is in a project mode now the at work we use ulsd and we add 2 gallons of howes and 4 liters of 2 stroke to every 8000l of fuel for the track machines, to my car as far as I know the pump has never been touched, it only has 460,000 kms, do you think it needs one?

if it isn't leaking then dont bother... mine was leaking pretty bad...

damn ulsd!