Petrol to AFN ETDi

[ninja.turtle007]

Sounds like the proverbial "dogs dangly bits" need to have ago in one

You welcome to have ago in mine!

You wouldn't think it was the same van.

[syncrowjoker]

I,ll hold you to that

[Roving Rich]

I've only driven non Tdi a few yards off road.
The very reason I bought my syncro was because it has a Tdi in it.
The Tdi is a great engine, no doubt about it in every vehicle i have ever driven. So it makes complete sense to bring an old van upto date with something smooth powerful and economical. Its part of keeping these old vans alive and viable.
I appreciate the T25 for its simplicity and ease of working on it. I appreciate the Syncro for its 3 diff locks.
I have a lot to learn about the Tdi (and T25s),exactly what makes em tic. I wonder about Etdi V Mtdi. But what I have now is a usable vehicle for the 21st century.
I'm very pleased to see that a number of you wizened Syncro owners seem to agree.

Cheers
Rich

[jed the spread]

They are good! That's very impressive MPG. I think you MPG will decrease with larger tyres because you will drive it fasster, creating more wind resistance.

I couldnt wait until tomorrow Tom so I nipped outside and swapped the new tyres over. I took it for a blast up the mad mile and its gone from 57mph @ 3400rpm to 64mph @ 3400rpm I am only going to drive at 65ish most of the time still so fingers crossed for a little bit more MPG

jed

[ninja.turtle007]

They are good! That's very impressive MPG. I think you MPG will decrease with larger tyres because you will drive it fasster, creating more wind resistance.

I couldnt wait until tomorrow Tom so I nipped outside and swapped the new tyres over. I took it for a blast up the mad mile and its gone from 57mph @ 3400rpm to 64mph @ 3400rpm I am only going to drive at 65ish most of the time still so fingers crossed for a little bit more MPG

jed

I knew you would be unable to resist!!

It'll be interesting to see how this affects MPG. Although I find it now takes a lot longer than before to get through a tank of fuel.

[jed the spread]

I just noticed today that my rev counter sits 1000 rpm higher than it should do on tick over. Looks like the gearing is a little higher than what I first thought It would explain the 35mpg and although I fitted the bigger tyres since, I put the roof rack and light bar back on so it might bring it down a bit I took Louise out for a drive for the first time this evening and she thinks the van is now smother and as quiet as her dads Merc

jed

[lloydy]

Havent I read somewhere that the jx rev counter and a tdi engine aren't quite right together? By that I mean it will give you false rpm values. I think you were saying that your gearing worked out the same as mine will be? If so you will be 60 @ 3000rpm, 70 @ 3500rpm

[ninja.turtle007]

I was going to fit a JX rev counter but if it isn't accurate I wont bother.

Jed, we can always check yours with VAGCOM.

[ninja.turtle007]

Havent I read somewhere that the jx rev counter and a tdi engine aren't quite right together? By that I mean it will give you false rpm values.

That probably depends on whether it is connected to the ECU or the alternator.

[syncroandy]

So long as the TDI alt has a W terminal it should drive the T3 tacho, may need a different size pulley though to bring the reading nearer. There is also the option to adjust the tacho by removing the small paper label on the back and use a fine screwdriver to adjust the pot inside. The TDI ECU as said does put out an 'engine speed signal' for the dash panel insert (cluster) but I think this is probably 5V (and maybe a different freq as well) and won't drive our tachs.

[syncropaddy]

So long as the TDI alt has a W terminal it should drive the T3 tacho, may need a different size pulley though to bring the reading nearer. There is also the option to adjust the tacho by removing the small paper label on the back and use a fine screwdriver to adjust the pot inside. The TDI ECU as said does put out an 'engine speed signal' for the dash panel insert (cluster) but I think this is probably 5V (and maybe a different freq as well) and won't drive our tachs.

Its important to get the ratios right between the crank pulley and the alternator pulley as the JX rev counter reads the alternator revs and converts it to engine revs. If you (for example) put a JX alternator on an AAZ 3000 rpm comes out at just over 2800 rpm cuz the effective pulley size is smaller than a JX.

[silverbullet]

What you diesel chaps really need is something that puts out a low-voltage impulse that's driven directly from the crank shaft, maybe by a reduction gear and using the collapsing field effect from a capacitive device. What are they called now...?

Ah yes, a distributor!

As you were...

[..lee..]

My rev counter has been adjusted by the pot at the rear.It's close "ish" at 2700 it reads 3000. Close enough for me ATM.

Lee.

[ninja.turtle007]

My rev counter has been adjusted by the pot at the rear.It's close "ish" at 2700 it reads 3000. Close enough for me ATM.

Lee.

Are you running yours from the back of the alternator?

Mario has modded the wiring in the alternator so I can run it from there.

How's your MPG?

We must have a chat about gearing.

[..lee..]

Yes I just used the std jx loom for that. Rpm wire is in the loom front to rear anyway.