PD Injectors adjustment screw setting

[aRd]

MK4 Golf PD ARL engine code,

in the bentley manual it say

screw adjusting screw into rocker arm until a notable resistance can be felt (unit injector positioned at stop).

– Turn adjuster screw 225° back off stop.
– Hold adjustment screw in this position and tighten the lock nut to 30 Nm.

in Elsawin

screw adjusting screw into rocker arm until a notable resistance can be felt (unit injector positioned at stop).

– Turn adjuster screw 180° back off stop.
– Hold adjustment screw in this position and tighten the lock nut to 30 Nm.

I've set my injectors based on the bentley manual 225° back off, realised now it should have been set to 180° back off, does 1/8 turn make much difference?

what are you thoughts on this.

 

[dieselpower04]

I think the new number is 180*. That's what we set my injectors to when installed the ARL units in my BEW.

You should be able to change it back pretty easily no?

 

[abbe]

i 'm interested in that too. because i have to set them too.

 

[Farfromovin]

I don't think it makes any difference... But the new spec is 180.

 

[Franko6]

It is 180 degrees. VW changed the number for all PD's. The difference?... It's easier to remember.

 

[m1ketdi]

45degrees on what i think is a fine pitch thread is 0.125mm. In PD injector terms thats going to change pressure build up relative to crank posistion a small amount, probably not noticable to all but the most anal though.

 

[TechnoDestructo]

Why are you using a non-factory service manual?

 

[borachris]

Why are you using a non-factory service manual?

 

[aRd]

Cheers all

Bentley manual is based on the factory manual (ElsaWin), particular version we use is a little out of date.

When I (and BoraChris) get a chance we'll adjust them to 180.

 

[borachris]

When I (and BoraChris) get a chance we'll adjust them to 180.

Damn sure I won't Ray, not wasting time messing about with that, pointless IMO!

From now on I'll use 180 instead of 225, purely as it's easier to remember as said above!

 

[ryanp]

haha, you two are like an old married couple! lol

Did Lee show you the turbo? the lever i took out was a proper bodge!

 

[borachris]

haha, you two are like an old married couple! lol

Did Lee show you the turbo? the lever i took out was a proper bodge!

I do feel like divorcing him sometimes like Ry

Yeah had a look today, good job mate!

Cheers for those bits mate, arrived yesterday

 

[Tuneme]

Quick one on this topic regarding this settings with performance cam, is 180" normal or should it be backed off more?

 

[Feinstaub_CH]

IIRC the 225° has the benefit that the engine is above 3000 more alive than with 180°.

This is the thread i remember:
http://community.dieselschrauber.de/viewtopic.php?t=5408&highlight=pde+180

Cheers
Feinstaub

 

[A5INKY]

Quick one on this topic regarding this settings with performance cam, is 180" normal or should it be backed off more?

180 deg works fine for even performance cams, no reason to change it.

IIRC the 225° has the benefit that the engine is above 3000 more alive than with 180°.

This is the thread i remember:
http://community.dieselschrauber.de/viewtopic.php?t=5408&highlight=pde+180

Cheers
Feinstaub

The change in power characteristic cited in your link has to do with cam to crank timing, not pump injector setting.

The pump injector rocker setting is to calibrate full pump travel minus a consistent distance to prevent mechanically bottoming them out. What is important is not so much 180 vs. 225 degrees backed off, but that they are consistent from injector to injector.