Engine Specific Info and Questions > mTDI Mechanical TDI Conversions
M-TDI ALH into a MK2 swap
fatmobile:
I have an ALH engine, a '91 Golf and a pump.
Starting with the clutch so I can make some timing marks for TDC and 12BTDC.
I'm going to use the MK2 020 trany to start with and upgrade to the TDI trany later, just to get it on the road faster and have it running while I collect the parts for an 02A or J
Should I use the MK2 tin clutch cover or the TDI style?
If I use the MK2 tin covers I'll need to use the MK2 crank seal carrier,
because the MK2 tin bolts to it.
Also wondering what to do on the other end with the serpentine belt.
Since I don't want power steering or AC.
tdifrontbelts by vwfatmobile, on Flickr
libbydiesel:
I haven't specifically done the ALH -> Mk2 with 020 trans so I'm not sure about the intermediate plate. I think the mk2 plate and seal carrier would work.
For the serp belt, it seems to me that you could just get the right length belt so it wraps just the crank and alt and Bob's your uncle.
fatmobile:
Thanks Andrew, this engine didn't come with a serpentine belt tensioner.
And there are a couple other things I need to get from the guy the engine came from.
I'll figure out the proper length for the belt.
That picture is a great help.
I also decided to use the MK1 intermediate plate under the clutch.
Even though the TDI seal carrier didn't have the 3 mounting holes I kept it.
I think when the trany is bolted on,
it will hold the tin down tight enough to keep it away from the pressure plate
and tight against the seal carrier.
It just looked so dry around the seal I didn't want to mess with it.
fatmobile:
Andrew you suggested I get a new tensioner.
Did you mean a whole tensioner or just a new pully/idler?
Also wondering; do you know if the tensioner pully and 3 mounting bolts are TTY and need to be replaced with new ones.
Edit:
After some searching I never saw it mentioned that the 3 mounting bolts are TTY and need replaced. Just that they need torqued to 18ftlbs.
libbydiesel:
I was talking about this whole unit: https://www.idparts.com/serpentine-belt-tensioner-a4-alh-p-629.html
I have not seen just the pulley/bearing offered aside from the entire unit. If you find that available let me know. I don't think the bolts are TTY.
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