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Author Topic: LDA on an NA Pump?  (Read 15416 times)

September 19, 2006, 06:10:32 am

klr650@

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LDA on an NA Pump?
« on: September 19, 2006, 06:10:32 am »
I thought I heard somewhere that you can add the LDA from a turbo pump to and NA pump. Does anyonw konw if that's true? What would be benefit? Would you basically have a turbo pump at that point?

I've got a turbo engine with an NA pump. But I've got some nonfunctioning turbo pumps laying around. If adding the LDA is worth it, I'd make a go at swapping tops.
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1993 Suzuki Sidekick w/ 1.9TD
Reply #1September 19, 2006, 07:42:18 am

Justin

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LDA on an NA Pump?
« Reply #1 on: September 19, 2006, 07:42:18 am »
The LDA will make a difference since it will allow you to add more fuel when under boost.

how much do you want for one of the non-functioning pumps because i really need an LDA top

Let me know its one of the only things that I need to complete the TDI project

later
Justin
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1985 GMC pickup 4x4 lift kit and runs 14.625 @ 91mph
1982 VW rabbit pickup 1.6L just rebuilt, 100mm cv's, 02A transmission
1997 Geo Tracker 1.9 TDI-M, variable gate turbo, Giles Pump
Reply #2September 19, 2006, 05:26:13 pm

klr650@

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LDA on an NA Pump?
« Reply #2 on: September 19, 2006, 05:26:13 pm »
Sorry guys I can't sell the pumps or any parts until I'm up and running for a bit. At the rate I'm going I'll need all 3 to get one good one.

So basically unbolt the top and swap in the LDA top. Guess I'll do the governor mod while I've got it opened. :twisted:
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1993 Suzuki Sidekick w/ 1.9TD
Reply #3September 19, 2006, 07:48:50 pm

klr650@

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LDA on an NA Pump?
« Reply #3 on: September 19, 2006, 07:48:50 pm »
I tried the gov mod on one of the "test" pumps. The toughest part was getting the throttle springs back together. I shot those springs around my garage atleast 3 times! :oops:
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1993 Suzuki Sidekick w/ 1.9TD
Reply #4September 19, 2006, 08:17:11 pm

QuickTD

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LDA on an NA Pump?
« Reply #4 on: September 19, 2006, 08:17:11 pm »
Quote from: "libbybapa"
I honestly can't comprehend the complexity of the vw throttle spring setup.  There really only needs to be one spring.  All it does is return the lever.   :roll:

Andrew


You should see the 1.9TD, makes the 1.6 spring setup look simple, the horror... I have no clue why they are like that, bosch engineers cousin maybe owns a spring shop?
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Reply #5September 19, 2006, 08:23:10 pm

935racer

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LDA on an NA Pump?
« Reply #5 on: September 19, 2006, 08:23:10 pm »
Specifically the passat 1.9td's, I only ever did one governor mod on a passat 1.9td pump, and it was the last one I care to do unless someone wants to pay $200 for a governor mod. The passats have another 1 or 2 springs more than the golf/jetta 1.9td's.
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Reply #6September 21, 2006, 02:07:56 am

fatmobile

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LDA top
« Reply #6 on: September 21, 2006, 02:07:56 am »
I don't think you can put an LDA on top of an NA pump... without removing one of the posts inside.
 I could be wrong but I think there is a stop on the NA pump body that the governor comes back and hits.
 On the TD pump this stop isn't there and the finger coming down from the LDA stops it instead.
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Reply #7September 21, 2006, 07:02:39 pm

klr650@

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LDA on an NA Pump?
« Reply #7 on: September 21, 2006, 07:02:39 pm »
Ok, so what's the verdict here. Is this a bolt off bolt on mod? Anyone ever done this? Or should I be the tester?
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Reply #8September 21, 2006, 10:04:08 pm

Justin

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LDA on an NA Pump?
« Reply #8 on: September 21, 2006, 10:04:08 pm »
From what I have read in the past it should be a direct bolt on, but from what fatmobile says maybe it is a little more in depth with the govenor assembly

I am not sure since the Turbo pumps are so rare around here that I have never seen one to tell you the difference, if someone would sell me one I would let you know
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www.archeryprostaffmi.com
1985 GMC pickup 4x4 lift kit and runs 14.625 @ 91mph
1982 VW rabbit pickup 1.6L just rebuilt, 100mm cv's, 02A transmission
1997 Geo Tracker 1.9 TDI-M, variable gate turbo, Giles Pump
Reply #9September 22, 2006, 01:57:01 am

fatmobile

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LDA
« Reply #9 on: September 22, 2006, 01:57:01 am »
Andrew PMd me saying the extra post doesn't get in the way of the little finger.
 Glad to hear that. I haven't actually swapped tops but did take a couple apart and take a look in there. I saw the extra post and didn't go any farther.
 Glad to hear it isn't something that needs removed.
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Tornado red, '91 Golf 4 door, with M-TDI 12mm pump, south bend clutch, VNT-15 turbo, 02A trany
MK4s: 2000 TDI jetta, 2003 TDI wagon, 2000 golf 2.0 gasser.
'84 Rabbit with 1.7TD KY block pistons bored to 80mm, VNT-15
'84 GTI with stock 1.6TD starion intercooler.
Reply #10September 22, 2006, 05:33:41 am

klr650@

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LDA on an NA Pump?
« Reply #10 on: September 22, 2006, 05:33:41 am »
When I do mine, perhaps this weekend, I'll take photos. But I'll need some help posting them. Assuming people are interested.
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1993 Suzuki Sidekick w/ 1.9TD
Reply #11September 22, 2006, 07:17:00 am

sethyboy85

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LDA on an NA Pump?
« Reply #11 on: September 22, 2006, 07:17:00 am »
I can help with the posting of pics
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Reply #12September 23, 2006, 10:09:34 pm

klr650@

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LDA on an NA Pump?
« Reply #12 on: September 23, 2006, 10:09:34 pm »
Ok, so I did the swap. Bolt off and then bolt on. Went pretty easy except those nasty springs, which I still have gotten back into place. I did the gov mod while I had it open. Still not running yet, but I know I'll be glad that I did the gov mod.
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1993 Suzuki Sidekick w/ 1.9TD
Reply #13September 24, 2006, 07:19:37 pm

RabbitJockey

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LDA on an NA Pump?
« Reply #13 on: September 24, 2006, 07:19:37 pm »
you'll have to test it then, like turn the fueling on the lda up really high and see if it smokes a bunch to make sure it's installed right, cause giles made it sound like it was more than just bolting on the new top
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Reply #14September 24, 2006, 07:28:47 pm

sethyboy85

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LDA on an NA Pump?
« Reply #14 on: September 24, 2006, 07:28:47 pm »
yeah if so, I might try that then. I have a spare turbo pump in unknown condition and a good NA pump so slap em together and BAM! ha ha don't follow close!
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91 Dodge Spirit R/T 2.2l T3/T4, Big valve head, 3" exh, NPR IC, goal. FS $4000
85 1.6lTD Garrett, NA34X mercedes INJ,2.5" turbo back- Sold
85 TD/91 Eco need to put together to make 1 good car
86 190D Merc with only 392k
96 Volvo 850 Turbo wagon, 1 grainger valve and 250hp/280tq
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