Author Topic: pic of LDA pump and pic of eco pump? (Read 3092 times)

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?

yankeejim · « **Reply #1 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:

knowtwodrugs · « **Reply #2 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?

foxracer1 · « **Reply #3 on:** June 19, 2007, 06:46:22 pm »

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

RabbitJockey · « **Reply #4 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.

Black Smokin' Diesel · « **Reply #5 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.

burn_your_money · « **Reply #6 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)

knowtwodrugs · « **Reply #7 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? =)

yankeejim · « **Reply #8 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!

rallydiesel · « **Reply #9 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: