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Engine Specific Info and Questions => IDI Engine => Topic started by: knowtwodrugs on June 19, 2007, 07:16:00 am

Title: pic of LDA pump and pic of eco pump?
Post by: knowtwodrugs on June 19, 2007, 07:16:00 am

I'm picking up a 1990 Jetta today and I'm not sure if the pump has the LDA or not.  Could I see some pics to get a better idea?  If it doesn't I'm pretty much screwed on upgrading the pump unless I get a different one right?

Title: pic of LDA pump and pic of eco pump?
Post by: yankeejim on June 19, 2007, 10:14:06 am

If this is a stock US-spec '90 jetta, then it is non-turbo, and would have the non-LDA pump.

HOWEVER it may have the altitude compensation thingy that some later NA engines had, which looks similar to the TD LDA but does the opposite - it cuts  fuel in lean air, to reduce smoke (and your ability to accelerate)

This is a pic of a turbo diesel pump with the LDA, which in this pic is the shiny-ish round thing that sits on top of the pump:

(http://i6.photobucket.com/albums/y241/yankeejim/tdpump.jpg)

Title: pic of LDA pump and pic of eco pump?
Post by: knowtwodrugs on June 19, 2007, 06:24:13 pm

I'm confused, there is definately a turbo on the car but there's no LDA.  How is it not turbo if there is a turbo?

Title: pic of LDA pump and pic of eco pump?
Post by: foxracer1 on June 19, 2007, 06:46:22 pm

Eco diesels just don't have an LDA they obviously are still turboed.

Title: pic of LDA pump and pic of eco pump?
Post by: RabbitJockey on June 19, 2007, 08:04:57 pm

ecodiesels technically are turbo diesels, they're just not as good as the "real" turbo diesels.... kind of like economical turbo diesel or regular turbo diesel.

Title: pic of LDA pump and pic of eco pump?
Post by: Black Smokin' Diesel on June 19, 2007, 09:19:49 pm

Quote from: "Trev0rbr"

ecodiesels technically are turbo diesels, they're just not as good as the "real" turbo diesels.... kind of like economical turbo diesel or regular turbo diesel.

The ECO pump also has a 8mm plunger, which is the suck. The NA and TD pumps have a 9mm plunger.

Title: pic of LDA pump and pic of eco pump?
Post by: burn_your_money on June 19, 2007, 10:03:23 pm

Eco diesels also have the K14, a nice small fast spooling turbo. Upgrade the pump (even to a NA pump) and you should have a quick car with minimal lag (relative)

Title: pic of LDA pump and pic of eco pump?
Post by: knowtwodrugs on June 20, 2007, 06:50:11 am

Yes I did notice that the turbo begins to spool almost immediately.  Are you serious that a NA pump will be an improvement?  That would be awesome, cos I have one laying around.  Of course, would a true turbo pump be an even better way to go even if I'll never be able to afford to send it to Giles?  =)

Title: pic of LDA pump and pic of eco pump?
Post by: yankeejim on June 20, 2007, 05:29:52 pm

Given that it has a turbo but no LDA, it's likely either a '91 ECO or it had an ECO motor swapped in at some point.  The configuration you describe was only offered in '91 and '92.

Send us a picture!

Title: pic of LDA pump and pic of eco pump?
Post by: rallydiesel on June 20, 2007, 05:53:20 pm

Anybody use a K14 with a turbo injection pump and up the boost on the K14 to around 20 PSI? I think that would actually make for a pretty peppy ride.  :idea: