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Engine Specific Info and Questions => IDI Engine => Topic started by: vanagonturbo on November 21, 2007, 02:37:59 pm
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Anyone done this? Im sure someone has. I have a couple of these lying around but I dont know if this will improve power. any ideas? Thanks!
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Can't comment on power, but I can warn you that they are not physically compatible without some work.... the snout is different, and I vaguely remember the actual shaft projection might be as well ?
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Thanks for the reply. I jsut went and looked at the two I have and compared them to a 1.6l pump and one looks like the snout is the same. the other one looks like the snout is a little longer but overall protrusion into the timing belt area/gear mounting appears to be compatable.
The other things that I noticed that might help me. The 1.6l in my scirocco seems less revvy than the AAZ in my vanagon. Both engines have been modified.
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I've got both on the bench right now... if no one posts back later tonight I'll get out my calipers later and be scientific.
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the AAZ mounting bracket does not bolt up to the 1.6 block so make sure the 1.6 bracket can support the AAZ pump
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Well Im not so much concerned with whether or not it will mount up. The one AAZ pump that has the wider looking snout I took off of an AAZ and put a 1.6l pump in its place. So I figure that if the 1.6l pump will mount to the AAZ bracket then it should work vise-versa right?
The other AAZ pump I have has an identical snout to the 1.6l so I am not worried about that one.
My main concern is whether or not there is more power to be gained from the AAZ pump. All pumps in question are 9mm pumps.
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anyone? I used the search and came up with nothing.
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Ok well I finished off a questionable headgasket (23 PSI on NA block) today. So I guess I will be the Guinea Pig in this matter. I will post the outcome. However, I have a few brand new AAZ heads at the shop and will be using one of them with the inclusion of port matching and a TDI cam. So, obviously I wont be able to post direct benefits from solely the AAZ pump. I will let everyone know what it does for me though. As it stands right now, the car feels faster than the 16v I took out of it. I have a total 50 mile commute everyday and want to have decent mileage (better than the 16v) and more power. I know this can be done along with running B100 so I can stick it to the man ;)
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I'm curious why the vanagon had a different IP from the factory, and the higher bar injectors, even without a turbo. They can't be all that different since they all run interchangeably- but when you're seeking every precious hp or mpg, it's interesting.
Was your vanagon originally diesel, then converted and reconverted?
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Well the vanagon is not the vehicle in question on this subject. I am talking about my Scirocco. My Vanagon is a syncro and I am in the US so no it was not originally a Diesel. I did put a new AAZ in it about two years ago and its doing fine. I do need to change the turbo to something that will be a little more robust. I was running it at about 27PSI and now the turbo is leaking oil and only puts out about 20PSI now.
The pump has a horizontally oriented LDA on a stock Vanagon TD to clear the decklid. My Vanagon does not have this, it has a normal LDA. It does clear the decklid. The only thing I had to do was remove some of the ribbing on the plastic cover to clear the alternator and I had to bend the throttle linkage to clear it. The engine mounting brackets are spaced off of the frame about 24mm to clear the gas tank and keep the prop shaft somewhat level.
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Update:
It turns out this was not a good idea. I swapped the LDA over from the 1.6ltd pump to the 1.9ltd pump and put it on the scirocco today. After what seemed like an eternity, I got the whole system bled and it started. Unbelievable smoke, had to slowly feather the throttle down so it would idle (otherwise, it would just die). So I tried another pump from a Eurospec SDI kit that I had lying around and the car never started again. I guess that something is up with the pump for the SDI as it ran on the TDI before I removed it, so I dont know. I just want to drive my Scirocco again. I will be going back to the shop to reseal the pump I removed and suffer with merely no leaks, and no power increase :(
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if i may ask ,what turbo did you have in the vanagon that wasnt up to par?
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you could probabyl get the 1.9 pump to work, but as stated, the snout sticks out.
you would need to recess the sprocket to compensate. i doubt you could move the pump over much if any as the injector lines become an issue. i had a brand new 1.9 pump and had to trade because it was going to be more work than worth, and might not even have worked.
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Dillenger1:
The turbo on the Vanagon is a K03. I have another one but I dont really feel like killing another new pump ;) I am thinking a GT25r might work out better.
jtanguay: If you read above, I did get it work. WAAAAAYYY to much fuel no matter what I did to calm it down. No idle, etc. It bolted right on the only thing that was different is that I needed to rebend the fuel lines and use the 1.9l pulley. Everything else lined right up. Timing was able to be adjusted to spec no prob. I was using 1.6 NA lines and they did come very close to the glow plug bus, so I bent that pretty close to the water pump hose but not touching anything. The hard lines were not a problem and havent been on the past 3 pumps I put on the car in the past two days.
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not sure exactly how I could have done that?!? I ended up putting the pump I removed from the car on today (needed a reseal, and I hate taking things apart and not getting more power or an improvement). I used the same pump lid on all 3 pumps.
Got any pics of what you speculate? I would be willing to try and put it on again if you think I did it wrong and could benefit...
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I did not. however, I was aware of the tension that would be put on the lid when I lined up the bolt holes. I put the top on offset toward the stop solenoid and slid it against the pressure of the springs until it lined up the bolt holes and tightened it down. I screwed (lol) with the max fuel screw for about 45 minutes before I gave up. I think I tried everything to get to to work so that it would be drivable for a daily. I can imagine in a race application it would work out well but for a daily, I just didnt see it working out. I did get it to idle ok with limitied smoke, but I had to VERY slowly let off the pedal until I wasnt touching it anymroe and it was idling. It revved up nicely, more fuel than I could possibly use with the current turbo.
Head gasket from the AAZ is still working on mech head, so my fingers are crossed.