[Vwdiesel] My TURBO test (more scientific)

[Shawn Wright]

On 7 Apr 2003 at 19:30, Mike & Coreen Smith wrote:

> Well, I put the "T" in the line. Hooked up a pressure guage good to 15PSI and "voila" it worked!
> When I really revved it out, under load, @ 4000-4500RPM I was seeing 9-10PSI boost.
> 1988 Jetta GL 1.6L turbo diesel.
>
> On the way home the hose actually fell off (poor fit) and I was getting ZERO boost, but didn't notice much if any difference, BTW.
>
> I'd like to hook up a remote solenoid valve that I could switch on/off to see if there is any "REAL" difference or are people just thinking there cars are more powerful with a turbo.
>
> All this being said, realizing I am a diesel and turbo neophyte/greenhorn/newbie.
>

Mike,

There is definitely a difference, so if you're not feeling it, perhaps your boost
enrichment valve on the inj pump is not working. In this case, you should get about
59HP, which is the spec for the ECOdiesel, which was a TD without the boost
enrichment. Your 1.6TD should see around 68HP, so a 15% gain in HP over the non-
enriched 59HP should be noticeable.
I know it is on my '85 Jetta 1.6TD - twice in the past 10 years I have forgotten replace
the boost enrichment hose after having the VC off, and found I cannot climb our local
mountain pass in 5th gear. With the hose on, I can easily climb the steepest part of
the pass in 5th at around 100km/h. Until you try a steep climb, the difference may not
be obvious though, as there is still a boost from the turbo, just not as pronounced
without the extra fuel.

Shawn Wright, I.T. Manager
Shawnigan Lake School
swright at SLS.bc.ca
http://Zuiko.sls.bc.ca/swright
http://www.sls.bc.ca