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FAQ/Tech Tips/Please Read First / Re: MK3 AFN ECU remove immobilizer
« Last post by fatmobile on February 20, 2024, 04:08:26 am »
I don't know about all MK3s but on the American ones with the AHU engine.
 The immobilizer is a separate relay. Like the seatbelt interlock relay.
 It can just be bypassed.
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I always have a hard time finding the link to the write-up/DIY.
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I was looking for a writeup on it. I'd think there ought to be several but maybe they're buried way back. I had to shim my waterpump pulley about 1/8" out from the engine and that put it dead nuts on. Then I used the deep alternator pulley and machined off about 1/4" of the big spacer in between the pulley and alternator. That put it very close but could use probably a 1/64" shave. I'd like to have the factory gear from a non-AC vehicle so there's no confusion when ordering parts. I'd figure it could be taken from a Rabbit diesel or any other non-ac diesel but I don't know for sure.
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 I think there is a writeup in the FAQs.
 Just rotate the AC alternator down, grind a little so it will go down farther.
 Use a ford double pully and the same AC belt.
 Along with some creative adjuster bar stuff.

I put this non-AC, MK2 stuff on all my MK1s.
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Parts for Sale/Wanted / WTB Parts Car 1986 Jetta diesel in PA
« Last post by Sawbones on February 17, 2024, 01:03:32 pm »
Looking for a CE1 car, non-ac, NA diesel, 5 speed, 4 door. Body isn't really a concern. It can be rotten to crap but I'd like it to be pretty much complete and non-molested. Trying to find within 100 miles of PA 18655

Thanks!
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MK2 Golf/Jetta and Audi 5k / 1986 Jetta Properly converting from AC to single V belt
« Last post by Sawbones on February 17, 2024, 12:59:12 pm »
I have a 1986 Jetta 1.6 NA diesel. It used to be an AC car. Previous owner stripped everything and it came to me with a waterpump and alternator that didn't line up with the crank pulley. I went through a bunch of nonsense and got everything in line but I'd like to have the proper single belt setup. If I were to walk into a part store I wouldn't be able to say what belt I need for my crank/waterpump/alternator nor would I be able to say what alternator I need. Can I get the parts from a Rabbit diesel or MK2 diesel and bolt it on, off to the races? My alternator is a long shaft motorola but it used to be a Bosch and I don't mind swapping it back if needs be.

What all do I need? I think crank pulley, waterpump pulley, alternator but if there's other things, I'm kind of at a loss.
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mTDI Mechanical TDI Conversions / Re: Thoughts on mTDI AHU head porting
« Last post by RabbitJockey on February 16, 2024, 02:48:23 pm »
hell yeah, please keep us updated on your project
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mTDI Mechanical TDI Conversions / Re: Thoughts on mTDI AHU head porting
« Last post by jhax on February 15, 2024, 07:42:38 am »
I do have an intercooler
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mTDI Mechanical TDI Conversions / Re: Thoughts on mTDI AHU head porting
« Last post by RabbitJockey on February 14, 2024, 09:10:58 am »
you're welcome, and good luck, hopefully you have an intercooler too.

The thing with your setup is if you increase the head flow too much it will out flow the turbo even at only 18psi which will make the turbo overspeed and this will obviously affect reliability.
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mTDI Mechanical TDI Conversions / Re: Thoughts on mTDI AHU head porting
« Last post by jhax on February 14, 2024, 08:52:38 am »
I was afraid of that, I already bought the burrs, oh well. I ended up getting the BRM intake, which, according to TDIClub research, is the one that provides the best air flow. Thanks for the information though!
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