VWDiesel.net The IDI, TDI, and mTDI source.
Engine Specific Info and Questions => IDI Engine => Topic started by: veeman on January 03, 2007, 09:13:09 am
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Before the holidays, I took the plunge and had Giles do a "super pump" for me. I had a spare A1 TD pump, but Giles mentioned that a later pump would be better to start with. Big thanks to Tyler (burn_your_money) for hooking me up with a pump from a 91 or 92 Golf that had the mechanical fast idle and the residual fuel adjustment that Giles was looking for.
As a side note, Giles said that the last of the numbers on a Bosch pump indicates what "family" the pump is from. For example, this pump is marked 0 460 494 182, while the A1 pump is marked 0 460 494 064. Apparently the 182 is pretty common and he could do more with that one. I'm sure he has more insight on that.
Anyway, a few days ago, I got a nice present on my desk!
(http://www.hostdub.com/albums/veeman_album07/TD_newpump_3.jpg) (http://www.hostdub.com/veeman_album07:TD_newpump_3)
All clean and sparkly with new seals, washers and fittings... Here's the backside. You can see the adjustable fast idle mechanism.
(http://www.hostdub.com/albums/veeman_album07/TD_newpump_2.jpg) (http://www.hostdub.com/veeman_album07:TD_newpump_2)
I installed the pump a few days ago and everything fit just fine. I had a heck of a time getting the old injection sprocket off the pump in the car...even broke my homemade puller. With a friend we "remade" the puller with stronger arms that fit the pulley better and it finally came off.
Here it is at home in the caddy...
(http://www.hostdub.com/albums/veeman_album07/TD_newpump_1.jpg) (http://www.hostdub.com/veeman_album07:TD_newpump_1)
Results:
The engine now idles at around 850 rpm...around 100 or so less than it did before with the fuel turned up on the stock pump. Cold idle with the knob pulled out is just over 1100. Seems to help cold starting and warm up a bit.
Giles had me set the timing on this pump to .95 mm, but I think I might be slightly off on that right now. There's a bit of white smoke when I start it (more than the stock pump) and it seems to idle / start rough sometimes. I'm going to have to check that and follow up with Giles.
As far as performance, it's remarkable. I was saying to some friends that a Giles pump is the wake up call to a lazy engine...it's true.
First, the engine seems to have more power and less smoke off-boost and when it hits boost, it really pulls well. It's like lighting a fuse at around 8 psi...just rips all the way up to 18 psi. Giles built this one for 20 psi, but I haven't gone that far right now. I can't comment on what Giles did exactly, but he indicated that the pump can put out approximately 25% more fuel than the stock unit, a different boost pin and some LDA modifications. I'm sure the governor is modded too.
Along those lines, the biggest difference in the way this pump performs is in the upper rpm ranges. Before with the stock pump there was good power from 2200 to about 3800 before it kind of fell off / plateau'd in the boost. It was kind of like the engine "hit a wall".
Now, with the Giles pump, the engine wants to pull past 4600-4800 rpm and doesn't seem to fall off like it did before. I was a bit stunned to hear what the 1.6TD sounds like at that rpm..."frenetic" might be a good term.
Shift fast enough, keep on the boost and you run out of road!. Highway driving is equally nutty. At 70 mph, the engine is right around 3000 rpm and the turbo is on the boil. Lean on the pedal and it rockets up into the boost and it simply takes off. Way less smoke than before. I love it.
I thought the caddy was fun before, but this is definitely a step up.
As far as economy, I'll be able to report soon. I've only had it on there for around 150 miles.
This engine dyno'd at 102 hp / 142 ft/lbs of torque before this mod (with intercooler and GTD nozzles), so I'm anxious to see what it does now. I should be able to get it on the dyno as soon as I get it all tuned correctly. Great work, Giles!
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:D :twisted: :twisted: :twisted: :twisted: :twisted:
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damnit damnit damnit!!! im soooooo getting mine this year.
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its a worthwhile new years resolution if you ask me :)
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it will be. Well ill just have to settle with my GTD nozzles this month. THose go in on the 17th :D
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I can't wait to see the dyno numbers!!
-Dave
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That's my old pump? It looks so shiny and fast :twisted:
I can't wait to see your mileage numbers. What were you getting before the new pump?
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it will be. Well ill just have to settle with my GTD nozzles this month. THose go in on the 17th :D
Where did you buy your nozzles?
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I like your IC pipes. :shock:
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Can that be done to my ECO pump.
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Where did you buy your nozzles?
kermatdi
http://www.kermatdi.com/
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Where did you buy your nozzles?
kermatdi
http://www.kermatdi.com/
Thanks! 8)
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I like your IC pipes. :shock:
x2, post some more pics, i thought you had a thread for it... im gonna look for it...
i just got my jetta back with the TD swap, WOW what a difference. i cant wait to get my TD pump to Giles. i had one for my NA and im going to have him modify that one to work with the turbo
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Yep, Tyler... that's your old pump. It appears that Giles bead-blasted it and cleaned it all up.
More info on the intercooler setup and install at the link below it:
http://www.vwdiesel.net/phpBB/viewtopic.php?t=5391
Dyno results with baseline:
http://www.vwdiesel.net/phpBB/viewtopic.php?t=5416
My mileage before installing the Giles pump was around 37-38 which is probably about right for a turned up stock pump in a caddy (aerodynamics, etc). The engine I have seems to be using some oil, so wear could be an issue in that as well.
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Awesome information Veeman. Like everyone else, I'd love to see more pics of that engine bay...Sweet! and like everyone else, I am saving for a Giles pump. I checked the pump I plan to have done and its a 0 460 494 135. :? I cant remember the year I took it from, but it was a Quantum TD. I was going to show some pics of some of the brackets/manifold on your other thread but cant get the damn pics to load :x
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Thanks! You can simply email me the pics of the QTD if you like... Send me a PM.
I just talked to Giles again last night about a few things...like everyone says, he's a great person to deal with. He appears to be very patient with knuckleheads like me AND a true enthusiast who loves modding pumps.
Took a friend for a ride in the caddy with the Giles pump last night. He's an area tuner that helped me do the IC install and the V6 TDI project. It was wet, so there was a bit of wheelspin going on! He couldn't believe how it revs out.
He really liked the improvement of the Giles pump and said that he thought it was definitely quicker than a 16V gasser Golf and that it might even keep up with his BMW 325 E30. I don't street race and didn't build the car for that purpose, but it is more entertaining to drive than ever.
There are more pics in my thread about the intercooler, but since you asked, here's another pic of the IC install before we put the radiator back. I hate how the engine bay looks so dirty... doesn't look that bad in person. I'm going to have to find something to clean up that grunge short of repainting the bay...
(http://www.hostdub.com/albums/veeman_album17/finished_drvsideIC.jpg) (http://www.hostdub.com/veeman_album17:finished_drvsideIC)