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+-- Forum: Engines (https://www.306oc.co.uk/forum/forumdisplay.php?fid=16)
+--- Forum: XUD Section (https://www.306oc.co.uk/forum/forumdisplay.php?fid=11)
+--- Thread: bosch diesel injectors... (/showthread.php?tid=9145)
bosch diesel injectors... - Piggy - 21-12-2012
...er so...are the N/A bosch diesel XUD injectors the same as the turbo ones??.
RE: bosch diesel injectors... - londondan86 - 21-12-2012
Different break pressures iirc mate
RE: bosch diesel injectors... - strictly_perv - 21-12-2012
Bosch NA ones are tiny compared to TD's. Size does matter.
RE: bosch diesel injectors... - Piggy - 21-12-2012
ah lovely...as I wondered...I assumed break pressures was the differing factor...didnt realise size was too
RE: bosch diesel injectors... - Ruan - 22-12-2012
Not much in it admittedly, IDI injector nozzles don't change a massive amount... And as posted, they're 155bar vs 175bar for Turbos...
RE: bosch diesel injectors... - Piggy - 22-12-2012
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?!?!
RE: bosch diesel injectors... - Ruan - 24-12-2012
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.
RE: bosch diesel injectors... - Piggy - 24-12-2012
okeydoke. as I thought. thanks for confirmation.
swapping nozzles only..
RE: bosch diesel injectors... - Ruan - 25-12-2012
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.
RE: bosch diesel injectors... - Dave - 25-12-2012
Do a James and run one lucas like a boss
RE: bosch diesel injectors... - Piggy - 25-12-2012
haha...fair play...I know one guy has done it with great success so shall enquire how...
thanks
RE: bosch diesel injectors... - Ruan - 25-12-2012
(25-12-2012, 10:39 AM)Piggy1987 Wrote: 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...
RE: bosch diesel injectors... - Piggy - 25-12-2012
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
RE: bosch diesel injectors... - Ruan - 25-12-2012
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...
RE: bosch diesel injectors... - Piggy - 25-12-2012
defo me too...will do me digging and see what I get
RE: bosch diesel injectors... - Dave - 17-02-2013
How will this do damage? Other than sound horrendous if there too soon or smoke like buggery if too late?