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Author Topic: Urms mTDI build  (Read 8270 times)

Reply #30June 11, 2016, 06:28:30 pm

vic003

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Re: Urms mTDI build
« Reply #30 on: June 11, 2016, 06:28:30 pm »
Steering column isn't riveted but has auto breaking screw (the head of the screw break when tighten with torque). You need to use a hammer and a chisel (? Burin en français)

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Reply #31September 09, 2016, 12:53:50 am

LabradorSteak

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Re: Urms mTDI build
« Reply #31 on: September 09, 2016, 12:53:50 am »
I like your seats...where did you get them?  I need some for another project I am working on.

Thanks, Matt.

Reply #32December 27, 2016, 02:07:14 am

urmas

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Re: Urms mTDI build
« Reply #32 on: December 27, 2016, 02:07:14 am »
Seats are from a Mk3. IIRC these are called VAG Sport seats and are not that seldom. Got them for 30 eur just because i wanted some kind of bucket seats and did not want to wait around for some Mk3 GTi Edition seats to show up, which are rare, but sweet as hell.

Meanwhile the car is running great, apart from a smell of fuel for the last month, which wasnt an obstacle to get it MOT'ed this month. Yesterday, took a look at the IJ pump and theres a drip every 5 seconds from the rear part of the pump. Most of the time it is the large circular seal which fails, but from what i see, theres a seal arround a circular thingy into which the timing hole screw goes into and it has a rubber seal arround it, which seems to be leaking. Ill look at it again, with a USB endoscope before ordering a pump gasket kit this evening.
« Last Edit: December 27, 2016, 02:17:01 am by urmas »
'89 Mk2 AFN mTDI

Reply #33December 27, 2016, 03:29:36 am

urmas

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Re: Urms mTDI build
« Reply #33 on: December 27, 2016, 03:29:36 am »
One another thing which bothers me, is vibration. I dont know if its fixable but after ive sat in an AAZ swapped Mk2, i cant let go. The AAZ engined car had alot less vibration than my AFN. IIRC it used stock Mk2 diesel motor mounts. I use Corrado G60 subframe and mounts, and the vibration is quite unpleasant, especially, when cold. Though, two of the mounts are hydraulic. (front and pass side)

I have also tried swapping a front mount from a B3 2.0, and the vibration was exactly the same.

Is really the TDi engine vibrating more than a TD?

Last thing i can think of, is using a Mk3 pass mount but that means i have to change the subframe aswell, which involves a different host of problems.
'89 Mk2 AFN mTDI

Reply #34December 27, 2016, 03:57:13 am

vic003

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Re: Urms mTDI build
« Reply #34 on: December 27, 2016, 03:57:13 am »
Hi!
You cannot do anything for vibrations !
I'm running the same engine in my mk2 with stock TD engine mounts and vibrations are here!
TD engines are a lot smoother!

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Reply #35December 28, 2016, 01:38:15 pm

libbydiesel

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Re: Urms mTDI build
« Reply #35 on: December 28, 2016, 01:38:15 pm »
All else equal, the TDI engines give more noise and more vibration than the older IDI engines.  Most people are very surprised by this fact due to how smooth and quiet the stock TDI vehicles are.  It is ALL due to different bolt-on parts, e.g. hydro mounts, engine cover, hood pad, belly pan, etc, etc...
Use, abuse or ignorance of any information is at your own risk, confirmation or refutation is your own responsibility, no further 'proof' will be given, take it or leave it, YMMV,terms subject to change without notice, avoid contact with eyes or skin, contents known to cause cancer in California

Reply #36December 30, 2016, 03:18:51 am

vanbcguy

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Re: Urms mTDI build
« Reply #36 on: December 30, 2016, 03:18:51 am »
That, and the ECU programming. The electronic TDI shines in idle smoothness as it can set ignition timing particularly retarded plus it has per-cylinder compensation for the injectors. Both are much easier to achieve electronically.

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Bryn

1994 Jetta - AHU M-TDI - Jezebel Jetta
2004 Jetta Wagon - 1.8T - Blitzen

Reply #37December 30, 2016, 05:23:38 am

vic003

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Re: Urms mTDI build
« Reply #37 on: December 30, 2016, 05:23:38 am »
That, and the ECU programming. The electronic TDI shines in idle smoothness as it can set ignition timing particularly retarded plus it has per-cylinder compensation for the injectors. Both are much easier to achieve electronically.

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Yeah and in mechanical all this things are impossible, injectors must be very good balanced in a diesel shop.
But it's hard to find a good diesel shop nowadays!

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Reply #38January 01, 2017, 08:49:26 pm

libbydiesel

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Re: Urms mTDI build
« Reply #38 on: January 01, 2017, 08:49:26 pm »
I do not believe that the VE tdi's adjust timing per injector.  The ECU uses only the #3 injector as feedback reference. 
Use, abuse or ignorance of any information is at your own risk, confirmation or refutation is your own responsibility, no further 'proof' will be given, take it or leave it, YMMV,terms subject to change without notice, avoid contact with eyes or skin, contents known to cause cancer in California

Reply #39January 02, 2017, 01:12:43 am

vanbcguy

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Re: Urms mTDI build
« Reply #39 on: January 02, 2017, 01:12:43 am »
I do not believe that the VE tdi's adjust timing per injector.  The ECU uses only the #3 injector as feedback reference.
There is definitely injector compensation on all the VEs.

The #3 sensor is used for timing control but the crank speed sensor is used to measure the difference in engine speed as each individual cylinder fires. The ECU then stores a value for 1/2/4 and uses the QA in the pump to equalize fuel delivery at low engine speeds.

The VE ECUs, even the early ones, have misfire detection too.

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Bryn

1994 Jetta - AHU M-TDI - Jezebel Jetta
2004 Jetta Wagon - 1.8T - Blitzen

Reply #40January 02, 2017, 05:55:44 pm

libbydiesel

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Re: Urms mTDI build
« Reply #40 on: January 02, 2017, 05:55:44 pm »
Interesting.  Thanks for that. 
Use, abuse or ignorance of any information is at your own risk, confirmation or refutation is your own responsibility, no further 'proof' will be given, take it or leave it, YMMV,terms subject to change without notice, avoid contact with eyes or skin, contents known to cause cancer in California

Reply #41May 18, 2018, 01:44:24 am

urmas

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Re: Urms mTDI build
« Reply #41 on: May 18, 2018, 01:44:24 am »
Finally freed up some time to swap the K24 for a T2. Unfortunately the result is not what id hoped for - the clock still shows the same 9 psi boost, although lag has almost disapeared and the butt dyno says things are better now.

So probably its time to look at the exhaust system, which is stock diameter, has mk3 flame arrester at the front and a stock silencer at the rear. Ill try removing the silencer first and see what happens.
'89 Mk2 AFN mTDI

 

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