1984 Jetta , TDI WE MUST! (1.9 AHU M-TDI) - page 45 - User's ride Wall - VWDiesel.net The IDI, TDI, and mTDI source.
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#660 by libbydiesel on 20 May, 2013 00:17
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I just pulled a camplate out of a LR 300 pump and it has a much less symmetrical profile that the one pictured. The UP ramp is much more steep. I replaced it with a Cummins plate because it had a few rust pits in it.
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#661 by 8v-of-fury on 20 May, 2013 00:19
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Interesting, what year is your 300TDI pump?
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#662 by 410 on 20 May, 2013 00:20
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I just pulled a camplate out of a LR 300 pump and it has a much less symmetrical profile that the one pictured. The UP ramp is much more steep. I replaced it with a Cummins plate because it had a few rust pits in it.
Interesting! The steepness of the up ramp is the most important part of the camplate after total lift. -
#663 by libbydiesel on 20 May, 2013 08:41
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I have no idea what year the pump is.
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#664 by bbob203 on 20 May, 2013 09:25
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What does a steeper or shallower cam plate do?
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#665 by theman53 on 20 May, 2013 09:38
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It would inject the fuel faster or slower in the same time span.
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#666 by camboscams on 26 May, 2013 12:05
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Well after reading all 45 pages of this thread, it would seem that any more effort i put into my idi would be futile.... Considering how easy it looked like the swap was this would be the absolute Cadillac of an engine swap. I have an 81 rabbit and have never been super satisfied with the engine, it does do well considering that its over 30 year old technology, but the cool factor of a MTDI would be the cats ass....
So thanks to Jeremy's graciousness of sharing his learning curve it would seem that the biggest hurdle of this swap is getting an injection pump that acts like it should.
Andrew, i remember you saying you would sell MTDI pumps that you have built in $1000 range, is that without a core? And do they act like a properly tuned idi when installed as far as idling cold and hot? Because as much as i love my Giles pump i have now, i can only imagine what it would cost for him to build me one without a core....
Over the last few years i have been a bit fed up with the ol idi (couldn't be because i'm asking 120% more out if it then it was designed for 30+ yeas ago??) but i feel like this would modernize the car enough that it would make it much more enjoyable to drive and own.
Thanks for the awesome read and the inspiration to spend even more money that i don't have!!!! -
#667 by CRSMP5 on 26 May, 2013 12:24
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bbob has a libby pump on his b3... there is a thread on to m tdi or not from this week.. i did a "sort of review" of b3 and tdi e vs tdi compairson in it..
if i had 3k to blow on each of mine they all would be m powered.. the issue you may overlook though.. depending on year used parts.. head, injector lines, stuff like that are hard to get vs say a 1.6idi... -
#668 by libbydiesel on 26 May, 2013 13:27
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I do not require a core with the pumps I sell and the idle is as solid as any stock mechanical vw diesel.
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#669 by rallydiesel on 26 May, 2013 22:25
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If you can use a mig welder, "Hey"'s posts in the FAQ are pretty much a step by step on building a mtdi pump.
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#670 by 8v-of-fury on 26 May, 2013 23:02
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If you can use a mig welder, "Hey"'s posts in the FAQ are pretty much a step by step on building a mtdi pump.
I had a pump with those modified internals, it was nowhere near the pump that the Land Rover pump was in stock unmolested form. In my eyes, retrofitting and modifying a 1.6/1.9 IDI pump to make an M-tdi pump is a complete waste of your time. Yes it ran, and yeah it had more power than a 1.6.. but it was hardly more power than a 1.9L AAZ... -
#671 by CRSMP5 on 27 May, 2013 00:05
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th eused rover pump cannot be beat.. took months of geting him to give up on his modded stuff vs the rover he finally put on his... and for all the others i see who have noise/unhappy m experiance the rover pump used from ebay uk is a gamble.. libby = newish and support.. for 2x as much.. but if your ebay find bad you saved nothing by time it fixed...
but in no way will i "mod a pump" when the rover pumps are out there.. no need to canabilize 2 pumps you could resell to fund the rover pump... then with libby option.. you got aa chance..
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#672 by 8v-of-fury on 27 May, 2013 00:11
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libby = newish and support.. for 2x as much..
Andrew's are brand new zero-mile units. -
#673 by 8v-of-fury on 27 May, 2013 00:17
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I wish I took a picture of tonight's progress, I got a lot done out there. Still a lot left to go though!
Got the coolant system wrapped up with pretty much everything new. New rad, out flanges, thermostat, hoses, and coolant bottle with the level sensor to be wired in to an LED in the future. Box of goodies! All of it for $160 shipped to my door, nice. On top of the coolant stuff previously listed there was a dipstick tube, intake manifold gasket, valve cover gasket, cam shaft seal, exhaust hangers, and three Bosch oil filters for the future.. I have three cars that run this filter, so its all good.
The oil system is pretty much done as well with the addition of the EuroSport external oil cooler, which looks like the oil cooler rad will fit perfectly in front of my coolant rad. Of course, the big 'ol dirtyawesome fan favourite Mann filter
. I ended up adding about 4 more threads to my original long oil filter mount and using a thick washer to take up slack to mount the thinner sandwich plate to the oil filter mount. Success! 
The fuel system is well underway as well.. being that this was originally a CIS gas engine car, the metal fuel lines ran along the firewall with the brake lines and then up in behind the battery where they hooked in the fuel filter and CIS mechanical fuel distributor. So I then originally when swapping to diesel ran my fuel filter off the drivers tower and had the soft lines cross the engine bay to the pump. I have cut the metal lines back, re-bent them up towards the passenger tower and flared the ends. I didn't snap a picture as it got dark too fast, but I am now running the fuel filter over on the passenger fender. I am running the Mk1 spin on type, which I hope to upgrade in the near future with an additional filter after this one. Preferably a 2-micron Racor unit with water separator and a sight bowl. Does anyone know the thread off hand of the mk1 fuel filters?? The filter will be pressure fed with a 5-7psi electrical pump in the engine bay and clear lines used for all of it, so I can keep a close eye one all the air that shouldn't be there lol. -
#674 by libbydiesel on 27 May, 2013 00:24
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The fuel filters are 3/4-16 (or the metric equivalent) just like the oil filters.
