I've got a 97 tdi 1.9 with a mechanical pump from a 86 td jetta. I set the timing @1mm of lift at tdc. I couldn't get it to fire at all. I rechecked the valve timing, pump timing, fuel delivery, and everything else I could think of. I finally tryed advancing the timing and got it to run well @2 mm lift at tdc. I'm thinking that the direct injection injectors open at a higher pressure than the 86 indirect injectors so they open later in the stroke - therefore retarding the injection. Have any of you who have made the conversion to mechanical pumps experienced this? How do I time the pump and what degree do I time it too? It seems like a crap shoot and I'd rather not have any holes in the top of my pistons!! Thanks! Norm
Humm, y do not have a great deal to make with a 1.6 pump on a TDI engine, keep the timing at 2mm and drive with, nothing other to make....
Probably 40-50HP maximum.
That takes anything other that a specific DI pump for these engines.
I have some mechanical 10mm pump in stock adapted for the TDI, good for daily driving and good for 130-140HP.
Humm, y do not have a great deal to make with a 1.6 pump on a TDI engine, keep the timing at 2mm and drive with, nothing other to make....
Probably 40-50HP maximum.
That takes anything other that a specific DI pump for these engines.
I have some mechanical 10mm pump in stock adapted for the TDI, good for daily driving and good for 130-140HP.
how much do you sell your pumps for ?
like i said before ,,set it up with a 12mm head,then you got plenty of fuel
kevin@r+r engine can do ya right for like 400 if you have the pump,and 12mm head from a cummins ve pump
800-722-2000
I'm really surprised that it takes 2.mm of static timing to get it running....I think the pump head you have is worn out. Overland used to sell a M-tdi kit for vanagons that used the 9mm pump head and they ran fine not huge hp #'s but it did produce what a stock tdi does. Remember a tdi only has a 10mm pump head, except auto's 11mm. I have an 11mm pump head on my M-tdi and @ 1.00mm pump timing it sounds as loud as a Cummings. I could get away with .80'sish mm timing if I wanted to quite it down.
You're probably going to need a new pump head soon so might as well get an 11mm or 12mm pump if you can.
I've got a 97 tdi 1.9 with a mechanical pump from a 86 td jetta. I set the timing @1mm of lift at tdc. I couldn't get it to fire at all. I rechecked the valve timing, pump timing, fuel delivery, and everything else I could think of. I finally tryed advancing the timing and got it to run well @2 mm lift at tdc. I'm thinking that the direct injection injectors open at a higher pressure than the 86 indirect injectors so they open later in the stroke - therefore retarding the injection. Have any of you who have made the conversion to mechanical pumps experienced this? How do I time the pump and what degree do I time it too? It seems like a crap shoot and I'd rather not have any holes in the top of my pistons!! Thanks! Norm
so how did you fix your car. I think i'm having the same problem
i set mine to stock 1.6td specs.....
i started at .7 and worked my way up
at .7 it was horrible
i think its at .99-1.01 or so right now
somethins wierd with your pump
we even set therabbittrees pump to that spec+it was fine
after he removed that wierd head with the spring thing under the plunger,,cause it "wouldnt time right at all"
