1991 Jetta TurboDiesel - top speed issue

fairly high - in mine no engine lasted longer than 240 000km, and even this one required a new head at 140 000km.

A new pump? Why? First on mine was in service approx. 360 000km, and then an engine w/ all accessories was a better deal as the turbo and manifold on the old one were both cracked.

Not normal.

Right, factory spec for europe is 158km/h for the 70HP JR-engine, mine tops out at a speedo reading of about 175km/h on levelled ground.

why not, would anybody wan't to stop you? ,-)

Not normal. Sounds to me like you are losing boost at/near full throttle. Have you checked the rubber from turbo to intake - might also be the pop-off valve.

Ingo

Yes. You could use a cheap mechanical one just for trouble shooting, just route a hose from under the and tape the gauge to the outside of the windscreen.

Ingo

"under the"?? Die amerikanische(sic) ubersetzung war nicht so gut. :-)

Ich glaube dass sie ein wort nicht geschrieben haben.

Bitte noch wieder einmal. Danke.

My German is a little rusty but I would really like to know how you set up your boost gage? :-)

[...]

... route a hose from under the hood...

If you like it british, try routing the hose under the bonnet. ;-^ BTW: Where did you learn German? You seem to have come way further than Sauerkraut since Kindergarten. ;-)

That's correct, Sir.

s.o.

It's easily connected by means of a T-connector put in the small hose from the turbo to the fuel enrichment valve on the injection pump.

Ingo

bad thing is this is a eco diesel, so it does not have a fuel enrichment module. I wonder if the tab for the hose is there and it can be cut off? I have a eco diesel, but was lucky the person before me changed the pump to the boost enrichment pump. I also agree about the power, lots of power down low, crap up high, I am sure this is because the super close ratio gear box, as it has a 4.2 final drive. I just got a rebuilt gear box with a 3.9 final w/ a .711 5th and its nice and quiet on the freeway

Dan

[...]

shooting,

... route a hose from under the hood...

If you like it british, try routing the hose under the bonnet. ;-^ BTW: Where did you learn German? You seem to have come way further than Sauerkraut since Kindergarten. ;-)

That's correct, Sir.

s.o.

It's easily connected by means of a T-connector put in the small hose

from the turbo to the fuel enrichment valve on the injection pump.

Ingo[/quote:5a33eb02f0] From VWsport.com NNTP Gateway

Rob:

A person named Gerry Wolfe had replied to my posting on the same issue.

He recommended using Stanadyne Performance Formula® Diesel Fuel Additive

to reduce smoking under acceleration and improve power/torque and fuel economy while cleaning the injectors. I've used it on my '92 Jetta TD (387K kms.) and it has really worked. I've seen a drop in the smoke, increased fuel economy (~925kms to a tank) and most important, improved power at high speed, although I don't take it over 110kmph on the

401/404. The ratio is 2ml to 1 litre of fuel or 100ml. to a full tank to treat 50 litres. This additive is sold at the VW dealerships.

But it can be bought at a cheaper price at:

SUPERIOR FUEL INJECTION & TURBOS LTD.

300 Steelcase Rd West, Unit 27, MARKHAM, ON Canada L3R 2W2 Phone 905-475-1122 Fax 905-475-1222 Email snipped-for-privacy@dalsturbo.com Web Site dalsturbo.com M-F 8am-5pm Giles - Manager $10 - 475ml approx. $35 - 1.9 litres approx. (4X the 475ml and $5 cheaper)

Amit.

PS: I remember you've replied and helped me with another issue that I had re: my block heater/battery in winter. Thanks for that. I'm in Scarborough.

Nah YA! :-)

I lived in Germany for nine years and actually was enrolled in 6th grade in a German school. The parents are essentially from Germany.

Oh that makes sense. I will have to keep this in mind for future use.

TNX

Does this mean you wouldn't see boost with the ECOdiesel?

I guess this makes the turbo boost more because of the enrichment pump? Without it, the stock pump just has the turbo act like an air pump?

[...]

So Peter Parker is an alias, eh? Because it sounds extremely british - in fact I think there was a guy with this name in one of my english text books back at shool. ;-)

Ok, as your car seems to be an eco-diesel there will be no small hose. But IIRC the small pipe on the turbo should be there, just with a plug on it.

Ingo

You will see boost of course. I would it expect to be lower, especially at lower rpms as less fuel is burnt. But at higher rpms it should be alsmost as high as on the real td as there is a boost regulator on the turbo that will limit the boost at WOT and high rpms.

For lower rpms this will be certainly true.

Basically that's what a turbo does all the time. But w/o fuel enrichment the the basic setting of the eco diesel is still a bit more to the rich side than that of the n/a diesel, resulting in a power gain of 6PS or

5.something HP.

Ingo

Scarborough.

He states it's got a cold start leaver, do the ECHO's have them? But if it's a Echo diesel, I can speak from experience. First this engine, turbo and injector pump can go more then 300k miles, assuming good care. Second I still have the original sales brochure on the ECHOdiesel. It states the turbo is a small one just to add air to the exhaust so the catalic converter can work. The slight extra HP is from the redesign of the cylinder head. From experience and the bently I can tell you it's got a very close ratio, high numeric ratio (normal thinking, geared low) so your top end is going to be low. I much prefered the transmissions out of the normally asperated

85-86 diesels. They had very good top speed. For what it's worth the gas engines of the 91-92 era had the same type of gearing. My son's 92 jetta gas screams at 80 mph.

JoBo

Your memory must be failing then. It's ECOdiesel.

We aren't talking about Toyotas here.