1.9 TD/i Question? - page 1 - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• 1.9 TD/i Question? by ThomZe on 03 Jun, 2008 14:51
• Hi, I recently bought a Golf 3 GTD Special 1993. The previous owner swapped the engine from 1.9 TD to 1.9 TDI, but for some reason, they didn't swap the whole thing..
  
  It's a engineblock \ top and so on from 1.9 TDI year 1995-6, but the fittet a AAZ pump? and stock Garrett T2.
  
  The car is running well enough, but it's kinda .. having a powerloss?
  
  My question is then, IS a 1.9 TDI engineblock capable of delivering more hp\nm. And can I drive with a higher amount of turboboost \ oil feeding? than if it was a ordinary 1.9td?
  
  It's kinda awkward, sorry if the questions are stupid or bad written.. It's my first Turbo Diesel car.
  
  Pictures of engine www.martinfaber.dk/dragon/golfmotor
• #1 by gigaz2 on 03 Jun, 2008 15:09
• the IP can't just be swapped, it has to be adapted with parts from the tdi pump.
  
  and yes, tdi has more potential, its more efficient than TD.
• #2 by ThomZe on 03 Jun, 2008 15:13
• Okay, but IF I would ever crank up the boost a bit, what would your guys recommendations be? I'm running at 0.6 bar at the moment.
• #3 by jimfoo on 03 Jun, 2008 15:27
• Turning up the boost won't matter until you can get more fuel, and when you do that, you want an EGT gauge. You may be able to get more power by turning up the max fuel screw some, but I don't know how much. A true mechanical TDI pump would be best. Barring that, you need larger than the AAZ's 9mm head, at least a 10mm as I believe that was the smallest available on a TDI.
• #4 by ThomZe on 04 Jun, 2008 09:08
• Thanks for all the info,   A Bosch technician told me the pump was capable of feeding at the same pressure as the TDI pump? But hell, as long as it drives.
  
  But is it true or falsh, that you can gain a little amount of power by modding your exhaustpipe that goes from the turbo and down? I've heard rumors about it, it should be "narrow" in the turbo end and create alot of friction\resistance?
  
  And, Would I get more by adding a large frontmounted intercooler, than the stock TDI cooler?
• #5 by jimfoo on 04 Jun, 2008 10:23
• Quote from: "ThomZe"

  Thanks for all the info,   A Bosch technician told me the pump was capable of feeding at the same pressure as the TDI pump? But hell, as long as it drives.
  
  But is it true or falsh, that you can gain a little amount of power by modding your exhaustpipe that goes from the turbo and down? I've heard rumors about it, it should be "narrow" in the turbo end and create alot of friction\resistance?
  
  And, Would I get more by adding a large frontmounted intercooler, than the stock TDI cooler?

  
  You want as large an exhaust as possible with as little resistance as possible, meaning matching the turbo output, then stepping up smoothly.
  An IC can help some, though it helps more when you have more fuel and boost. The AAZ pump can make the pressure as is, but not the volume.
• #6 by ThomZe on 04 Jun, 2008 12:11
• Well Okay, it's just a crappy engine.. 0-100 km/h in over 20 sec? It took it 7 sec to get from 60 til 80.. My old car got from 0-100 in that time :\
  Sux
• #7 by gigaz2 on 04 Jun, 2008 12:37
• no, its just a crappy build
• #8 by gigaz2 on 04 Jun, 2008 12:57
• without buying anything you could raise the power by just making the LDA mod.
  
  but you really need TDI cam disk, plunger and delivery valves so it runs ok.
  you can get a cheap tdi pump on ebay, it has everything you need
• #9 by ThomZe on 04 Jun, 2008 13:13
• So I just need the TDI pump? If I install an TDI pump, then I will need wireing, box and electronic speeder? Won't I?
  
  I'm asking cus, I really don't have a clue
• #10 by gigaz2 on 04 Jun, 2008 13:20
• it has to be a hybrid between the two.
  parts from one and parts from the other.
  
  not a basic modification
• #11 by ThomZe on 04 Jun, 2008 13:32
• That'll say, that I have to swap the internal parts of the different pumps? And then have a pump technician to configurate it?
  
  
  **edit**
  
  Is there any other options maby? Another pump than tdi? or?
• #12 by jtanguay on 04 Jun, 2008 14:27
• http://www.vwdiesel.net/phpBB/viewtopic.php?t=12912
  
  that'll sure wake up your car.  not exactly a direct swap, but as close as you're going to get without sending a pump to a builder (cost is about the same too, and then some with the cost of the pump)
  
  you could sell your current pump to offset the cost a bit...
• #13 by jtanguay on 04 Jun, 2008 15:46
• ugh wait a sec.... TDI block & AAZ Head??? and it runs? hmmmm guess that totally blows away some peoples theories about CR, volume, etc? unless AAZ pistons were used...
• #14 by gigaz2 on 04 Jun, 2008 15:57
• look closer, its a tdi block AND head