Engine Specific Info and Questions > mTDI Mechanical TDI Conversions
M-tdi on AFN engine in Golf 1
vanbcguy:
The delivery valve swap is because the Land Rover valves are about an inch longer than the VW ones. Technically I suppose you could bend the injector lines to fit but they're crack prone enough as it is. I gave it a shot and gave up when I did mine. The VW delivery valves are the right length to make the lines fit properly. They can come from any VW pump though rumor has it the 10mm TDI pumps have the best flowing valves.
Turbo selection requires a set of goals. How much power do you want, how much are you planning on building up / reinforcing the engine, what if any intercooler are you planning on running?
The Rover pump is calibrated for 120hp before you touch it so it'll happily beat a stock E-TDI.
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BGA:
Thanks Bryn. Fuel lines to my LT 2,8 pump are installed and fits perfect so everything should be okey.
LucasMolen:
Thanks Bryn and BGA, that cleared things up nicely. I am leaning towards using an LT2.8 pump. They should be available here and from what I read in other topics it seems like the easiest option. BGA, do you have a build thread with more pictures and information? I am very curious to see what you've done so far.
If I understand correctly, the LT pump fits in the AFN bracket without modifications? I just found the service manual for the AGK engine and everythings seems perfect for my purposes. The standard LT turbo is wastegate controlled and the boost pressure enrichtment seems easily adaptable to the 1.9 engine.
My car is originally a petrol engine. Can you guys give me some pointers regarding the glow plug system and adapting it to my puposes? Can I take it straight from another car?
Thanks in advance!
Edit: Is the LT pump slotted to change timing, or do I still have to use an MK4 adjustable sprocket?
vanbcguy:
I believe the LT pump is slotted though the ALH style sprocket is miles easier to deal with. I'd still use it even with a stock E-TDI pump.
What was the redline of the AGK?
Glow plugs aren't a huge issue for direct injection engines. They'll help reduce smoke at startup a little but unless you regularly get temperatures well below freezing they aren't strictly necessary.
A simple circuit with a suitable relay (needs to be rated at 60A or higher) and a manual momentary pushbutton would suffice if you're going for simple.
Alternatively you can find a glow plug relay and socket from a Mk2; they have a connection to the coolant sensor and automatically adjust the glow cycle (with afterglow too). It'll use the plugs way more than the TDI actually needs but that won't hurt anything.
I use the factory AAZ glow plug stuff on my M-TDI. Hard to get myself out of the habit of waiting for the light to go out though!
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BGA:
Lucas, I have no build thread. I will post pics thou.
" I just found the service manual for the AGK ". I think you have no use of this engine, just only the pump. The LT pump is slotted, but use the ALH hub/sprocket as Bryn suggest. You get the best of two worlds! I like the big mass in the ALH system - it lessens the uneven torque used by the pump - it works as a flywheel - gives longer belt life ( sorry I cant explain it better with my swinglish).
Glowplugg. Do it the simple way Bryn suggests. No lights, no timing relays, that's why we like mTDIs isn't it?
As the plugs draws many amps you get a good idea on what is going on by the warning lights in dash panel, they are dimmed if at least some plugs are working. I have had it in my Volvo/ VW 1,6 TD for more than 10 years.
Bryn, "What was the redline of the AGK?" This is from the
VW LT leaflet:"(125 PS) bei 3500 1/min. (rev.limit 3800)"
My engine will go into a Volvo 745. With that big engine compartment I have a lot more freedom to build the engine than you have. Keep that in mind when you see my pics!
Its only in rear end of engine block I am short of space.
Stil to design: mechanical VNT control. 1000 lines of code and 400 soldering points keeps me away from electronic control.
PD inlet manifold, Volvo D5 GT2252v turbo
LT slotted holes
pump injection start markings
TDC
EM turned upside down
grinding of EM necassary around IM bolts. Homemade adapter EM to turbo
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