GTD intercooler

[lads]

Hi,

First of all accept my apologies if this wasn't the correct place for this message, but no  other place seemed to fit.

I'm thinking of buying a golf II with a diesel engine. I was going for the D but after speaking to some owners it became clear that the both the GTD and the GTD intercooler are more economic. While the non-turbo engine uses 7l/100Km, the intercooler version can go as low as 5l/100Km.

Is this true? I know the intercooler and turbo add efficiency to the engine, but the GTD has considerably more power than the non-turbo version.

Also, when did the production of the GTD intercooler started? Already in 1984 or later?

Btw, if anyone has buyer tips, they are welcome.

Thanx.

[lads]

23 views 0 replies. Cool forum.

[jtanguay]

23 views 0 replies. Cool forum.

and post not even 24 hrs old  :lol:

some people would argue that N/A diesels can achieve better mileage... to each their own (and driving style)

if you like to drive fast, go for the turbo.  if you can drive normal and keep to the speed limits, then N/A might be your best option.  the turbo engines should be driven hard to reduce carbon buildup and to keep the turbo happy.  

the GTD intercooler is alright, but becomes more of a heat magnet while in traffic and not enough cool air flowing.  if you have access to one then use it, if not, no worries.  just buy a nice small one that will fit in an area that has good airflow and you're set.  i will be going the air/water route which is much more efficient if setup correctly.

a diesel engine properly tuned with a fresh injection pump and injectors and a tranny with tall ratio's should be able to achieve 4L/100km in 'normal' driving conditions.

[TomB]

Well, it's not an ideal comparison, but as the owner of a Mk2 GTD (80hp stock) I've never bettered about 45mpg (UK Galls - 4.54l).  This could be due to a combination of biodiesel and enthusiastic driving though!  Allegedly (eBay) 55mpg is possible, although I think you'd have to be doing 56mph behind a lorry in 5th to achieve that!  My average over my 18 months of ownership is probably about 40-42mpg, so not too bad, although as the thermostat's gone, that's been suffering of late.
The other car I regularly drive is a Peugeot 106 N/A 1.5l diesel.  This rarely goes out of 30 limits, but is driven hard (it's a pizza car) and that too returns about 45mpg around town.
I'd say that on this empirical (and not very complete) evidence, that yes a N/A car uses less fuel than a Turboed one.  I must add however, that the turboed & intercooled Golf is a lot more enthusiastic to take off once the turbo is up to speed, and doesn't run out of puff at 80mph like the Pug!  

If you can lay your hands on a factory intercooler setup then go for it, but you might as well just design in a custom one that's front mounted as TBH the airflow to the factory one isn't brilliant.
Cheers,
Tom

[jtanguay]

in theory turbo diesels should have about the same mpg if driven the same as an N/A diesel.

[Ziptar]

I would love to see data for an intercooled TD and without to see what the difference is.  A lot of people talk about intercoolers, but few actually do it.

After I get my Leaky IP dealt with, Then I'll finally get this installed...

Then we can find out the answer.

I am not after power, I am after Pep and MPG, I also don't want to over stress an engine with 204K. I won't be upping boost or fuel or anything like that. I am sticking with the stock K14 and EcoDiesel IP but, am adding an LDA. I believe adding an IC will improve MPG, or at least power with no MPG cost but, to what degree I don't know. I am dying to find out.
Might also do some before and after dynos if I can get access to one for curiosities sake.

I have all the parts to do it, what I lack is time , I won't get any of it done until I get moved later this month and settled on the other end. In the mean time maybe we can figure out how to best test to quantify the benefits.

[Ziptar]

Ziptar, are you tracking your mpg's now?  I'd like to see what the difference is, keeping everything else the same.

Not officially, I need a thermostat and the cold start advance shaft is leaking until it warms up. I am going to try to get the shaft resealed this weekend.

If I do, I'll start keeping track.

[tdi4by]

I want one of those GTD setups!!!!

[Patrick]

I was shocked that my Cummins 4BT engine didn't have an intercooler, and if I would have kept the truck, I would have mounted one.

Are you sure? I used to haul them from the factory in the Carolinas to a skidder plant up here. Some of them (not all) had a water to air intercooler built into the intake manifold. Cummins used to use that on a LOT of thier engines.

[Ziptar]

I want one of those GTD setups!!!!

All I can tell you is be patient, be prepared to spend allot of $$$, and look in Europe.

Had it not been for MontanaGTDs diligence and assistance, I would not have one.

I was shocked that my Cummins 4BT engine didn't have an intercooler, and if I would have kept the truck, I would have mounted one.

I always understood that a 4BT was non-intercooled but the 4BTA had the air to H2O intercooler on the manifold. Thats why the A version is rated for 120HP but the non-A is only 105HP.

[Ziptar]

IMHO, if you compare everything, efficiency, ease of fabrication, and cost a FMIC comes out on top over any other option.

I would have gone that route but, I just "Wanted" a factory GTD IC setup and I am not looking to do crazy boost and fuel so the less efficient factory setup is fine for me.

[jtanguay]

i think for the factory setup a fan would do it real good, and maybe even a water spray system that would spray the surface of the intercooler... talk about super cooling efficiency!!!  

[boxer246]

Ziptar....what intercooler setup is that from...like what car?  I like the in/out on the same side and it seems like pretty good size.

[Ziptar]

It is a factory VW MKII turbo diesel intercooler. It would be from a ~90-92 Golf GTD, like this one. They were available in Europe mostly.

Like everything else uber cool that Volkswagen made, it was not made available in North America. At least we got those really cool MKII square headlight Westmoreland grills for a couple of years, Sort of makes up for it :roll: .

PM MontanaGTD, he had a couple of intercoolers with just the shrouds that he had left over after piecing together a complete setup for me, he might still have one. His FS/FT post.
http://www.vwdiesel.net/phpBB/viewtopic.php?t=11372

[LeeG]

I have a GTD IC and the hoses, but none of the shrouds.  My plan was to hook up hoses, prop the IC into place and then cut and tape cardboard to hold it in place and form the shrouds, then remove the cardboard and 'glass it.  Bending sheetmetal to fit would also do it.    I was going to incorporate a fan as well.

Since I dont have a MkII anymore, this project never happened.  $150 obo.  email me.