bosch diesel injectors...

[Piggy]

...er so...are the N/A bosch diesel XUD injectors the same as the turbo ones??.

[londondan86]

Different break pressures iirc mate

[strictly_perv]

Bosch NA ones are tiny compared to TD's. Size does matter.

[Piggy]

ah lovely...as I wondered...I assumed break pressures was the differing factor...didnt realise size was too

[Ruan]

Not much in it admittedly, IDI injector nozzles don't change a massive amount... And as posted, they're 155bar vs 175bar for Turbos...

[Piggy]

that break pressue is in the spring/tip isnt it...so if I was, speaking theorecticaly, to change the tips/springs for bosch 3.1s then the break pressure wouldnt matter?!

ah...but size is different?!?!

[Ruan]

The nozzle is different as is the spring/shim stack...

You cannot just place the springs out of another injector in as they're matched, they require the pressures setting correctly with shims, which you won't have.

[Piggy]

okeydoke. as I thought. thanks for confirmation.

swapping nozzles only..

[Ruan]

Errrr....

Can't go mixing and matching nozzles, which was kinda the point of my post...

Change the entire injector as a unit unless you're sending them off to get re-shimmed and calibrated...

Be aware that if one nozzle is out of calibration as far as pop pressure goes, it will affect the injection timing...

Basically - get Turbo 175bar injectors... Don't try and change the nozzles yourself, or you'll end up with 4 injectors of differing break pressures, screwing up the overall timing of the engine.

[Dave]

Do a James and run one lucas like a boss

[Piggy]

haha...fair play...I know one guy has done it with great success so shall enquire how...

thanks

[Ruan]

haha...fair play...I know one guy has done it with great success so shall enquire how...

thanks

"Great Success"...

What you mean it runs?

Honestly, unless you have a pop tester and a Bosch shim set, don't even bother, you'll just end up with f*cked injectors...

[Piggy]

nah thats fair comment...I have emailed him to find out...he is on this forum...blue ph1 on speedlines.

close to 170bhp and 250 torques on a nice smooth map so he must have set them up right

[Ruan]

You can quite easily get that with dodgy injectors, it's the damage it's doing to the engine and precombustion chambers I'd be concerned about...

[Piggy]

defo me too...will do me digging and see what I get

[Dave]

How will this do damage? Other than sound horrendous if there too soon or smoke like buggery if too late?