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Engine Specific Info and Questions => IDI Engine => Topic started by: Alcaid on December 28, 2012, 06:26:42 am

Title: AAZ dual stage injectors - Opening pressures?
Post by: Alcaid on December 28, 2012, 06:26:42 am

Hi,

The first opening stage / pilot injection on these are 150-158bar according to Bosch spec, but what is the second stage set at?

Anyone got experience with running slightly higher opening pressures? I have a set that will be set up with the Bosio BNOSD308 "GTD" nozzles soon.

Title: Re: AAZ dual stage injectors - Opening pressures?
Post by: burn_your_money on December 28, 2012, 09:55:55 am

220 according to this guy
http://www.505turbo.com/forum/index.php?/topic/2257-vw-aaz-two-stage-diesel-injector/

Title: Re: AAZ dual stage injectors - Opening pressures?
Post by: Alcaid on January 14, 2013, 04:41:48 am

Anyone else got information on the second opening pressure? (preferably from a more official source than a forum post)

Anyone experimented with higher opening pressures on these?

Title: Re: AAZ dual stage injectors - Opening pressures?
Post by: 8v-of-fury on January 15, 2013, 10:48:00 am

The 1.9AAZ has a higher break pressure than the AHU and ALH TDI?

I have heard all three 1.9's were 195 bar. The 2.5L 4 cylinder Land Rover I have heard rumored a 220 bar break pressure.