a fuel efficient Series 3 ??? a dream??

**Dougal** · 30th April 2008, 12:01 PM

Originally Posted by isuzurover

Correct me if I am wrong, but AFAIK there are no mechanical injection versions of the 1.9TDI engine. The VP37 1.9TDI was introduced in 93/94 and used until 98 in various forms until the PD engines (pump-nozzle) replaced it. All VP37 engines had the Bosch VE injector pump (same as the 200/300 Tdi), however they also ALL had an ecu to control solenoid valve(s) in the pump. It is probably not too difficult to get a fully mechanical bosch VE pump built to the same spec though... But an added complexity, and may also mean that the fuel consumption isn't as good. It is probably simple to wire in the ECU though.

I drove a few of these engines when I was in Germany, both the VP and the later PD engines. They run very nicely, and are a great engine for a small car. But I wonder how they would go pulling a heavy LR - should be great on the highway, but not sure about low down torque/offroad.

At one time we had a 1.4TDI polo for a few weeks (PD engine - 70 odd KW). We could sit on the french autobahns at 130 all day (speed limit) and still only do about 4L /100 km.

I expect you're perfectly correct.
The mechanical pumps they retrofit may be from early IDI versions of the same engine.
AAZ?

My nissan work car has a YD22 engine with the VP37 pump, I've been searching for the ECU that controls it and I can't find the bloody thing. All expected CPU hiding locations are empty.
This is a slightly smaller version of the YD25 used in the current Navaras. Fuel economy is great, but it badly needs a turbo.

**isuzurover** · 30th April 2008, 12:22 PM

Originally Posted by Dougal

I expect you're perfectly correct.
The mechanical pumps they retrofit may be from early IDI versions of the same engine.
AAZ?

My nissan work car has a YD22 engine with the VP37 pump, I've been searching for the ECU that controls it and I can't find the bloody thing. All expected CPU hiding locations are empty.
This is a slightly smaller version of the YD25 used in the current Navaras. Fuel economy is great, but it badly needs a turbo.

Found some info here: Vw swap? - Page 3 - ToyotaDiesel.com Forums

Well, you can run it as a M-TDI using a mechanical injection pump. I haven't looked into it too much but alot of people use 4BT based pumps and a mix of VW parts. Mine is all electronic, full OBDII converted. I am a VW guy so finding the parts and already knowing a good amount about the wiring it wasn't too bad.

However the TD (AAZ) pump might be an option as well - I think they are scarce in nth america though - hence them using 4bt??? parts.

It may also be possible that some of the non-EU/US market TDIs had fully mechanical setups...

**PAT303** · 30th April 2008, 01:22 PM

I think all the ideas are good except that after you get it all done and dusted it would be cheaper to buy a good condition county,a good diesel engine and all the coversion extra's and roadworthy slip etc would cost more than the vehicle. Pat

**Jimmy** · 30th April 2008, 02:21 PM

Originally Posted by PAT303

I think all the ideas are good except that after you get it all done and dusted it would be cheaper to buy a good condition county,a good diesel engine and all the coversion extra's and roadworthy slip etc would cost more than the vehicle. Pat

I totally agree Pat. and thanks everyone else for they words.

I was thinking more hypothetically really, and slightly hoping there was a cheap option out there. I think I will more than likely make some mods to my existing Holden 186 and take the hit on the fuel pump. Maybe some new diffs, higher speed trans case, carby upgrade or even gas.

cheers
Jim

**Dougal** · 30th April 2008, 03:17 PM

Originally Posted by isuzurover

However the TD (AAZ) pump might be an option as well - I think they are scarce in nth america though - hence them using 4bt??? parts.

The 4BT is probably the only VE pump'd 4 cyl diesel available in the US.

Ain't that a sad situation.

**PAT303** · 30th April 2008, 03:25 PM

Jim has it got a salsbury rear diff or rover?If it has a rover buy a RR centre and fit it in,don't use 4wd and try it. Pat

**Dougal** · 30th April 2008, 06:45 PM

Here's a link to Jim's 1.9 powered series.
1.9 TD Series - Pirate4x4.Com Bulletin Board

Unfortunately this happened.
Death of an engine - Pirate4x4.Com Bulletin Board

So it's been rebuilt into a TDI (was an indirect TD originally).

**isuzurover** · 30th April 2008, 10:36 PM

Originally Posted by Dougal

Here's a link to Jim's 1.9 powered series.
1.9 TD Series - Pirate4x4.Com Bulletin Board

Unfortunately this happened.
Death of an engine - Pirate4x4.Com Bulletin Board

So it's been rebuilt into a TDI (was an indirect TD originally).

Funny, that is a common problem for 2.25D engines as well. The buggered engine that donated my injector pump (etc.) had the same problem. There was a semicircle-shaped indent in #3 piston about 0.25" deep!!!

That was only shortly after an expensive rebuild with ACL 0.060" OS pistons. There is a lot of wisdom in making sure the precombustion chambers are peened properly - especially after a head shave.

**isuzurover** · 30th April 2008, 10:44 PM

Originally Posted by Jimmy

I totally agree Pat. and thanks everyone else for they words.

I was thinking more hypothetically really, and slightly hoping there was a cheap option out there. I think I will more than likely make some mods to my existing Holden 186 and take the hit on the fuel pump. Maybe some new diffs, higher speed trans case, carby upgrade or even gas.

cheers
Jim

A high ratio T-case can cost as much as a diesel conversion. 3.54 (RR) diffs are too high in many cases, and low range becomes useless (too high).

Originally Posted by PAT303

I think all the ideas are good except that after you get it all done and dusted it would be cheaper to buy a good condition county,a good diesel engine and all the coversion extra's and roadworthy slip etc would cost more than the vehicle. Pat

Depends what you are looking for. I have no interest in trading my IIA for a coiller. If it is just the same as any other 4x4 then sure, an upgrade to a newer diesel vehicle is most likely cheaper.

**Dougal** · 1st May 2008, 05:37 AM

How about a TD4 from a freelander?

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