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Author Topic: quick question about PD crank  (Read 15804 times)

July 02, 2008, 08:19:30 am

oldskool rich

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quick question about PD crank
« on: July 02, 2008, 08:19:30 am »
ive cum across a 2.0 PD crank, does it have the same stroke as the 1.9?
will it fit in AAZ block?

it looked like the pistons are bigger, if they are can you bore out a 1.9 to 2.0?

 8)




f6squared I.D.S.T

Reply #1July 02, 2008, 08:00:41 pm

oldskool rich

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quick question about PD crank
« Reply #1 on: July 02, 2008, 08:00:41 pm »
does anyone know?


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Reply #2July 02, 2008, 08:24:58 pm

rallydiesel

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quick question about PD crank
« Reply #2 on: July 02, 2008, 08:24:58 pm »
I seriously doubt a PD crank would fit an AAZ block. A PD crank would have the gear for the oil pump on it. I think the only other cranks that would fit an AAZ block would be a 1Z or AHU.
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Reply #3July 04, 2008, 08:05:30 am

oldskool rich

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quick question about PD crank
« Reply #3 on: July 04, 2008, 08:05:30 am »
yes i know about those problems, ive got one in my 1Z just a bit of machine work 8)

i was mainly talking about stroke :roll:

please dont make me take my engine apart to find out :(


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Reply #4July 04, 2008, 09:51:36 am

RabbitGTDguy

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quick question about PD crank
« Reply #4 on: July 04, 2008, 09:51:36 am »
You may have to do that as at least on this side of the pond, 2.0 PD cranks are elusive and I doubt anyone has attempted it yet here. Specs aren't hard to come by, but since the 2.0 PD crank came in the newer block design its hard for anyone to say. You may have to find out for yourself.

Joe
1979 Rabbit mTDI crazy $*(\%& bunny...
1972 VW Westfalia
2009 VW Tiguan SE 2.0T (Wife's car)
2001 Audi TT 225 Quattro Roadster (something newer :) )

Reply #5July 15, 2008, 08:21:00 pm

oldskool rich

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quick question about PD crank
« Reply #5 on: July 15, 2008, 08:21:00 pm »
just in case anyone else was wondering i found out that the crank is the same as a 1.9, put it in an old aaz block and its totaly the same, so that must meen the bore is bigger. so if you wanted a 2.0 VE then you just need the pd bottom end and bore it out.

i want to do this, if i was looking for 300bhp+ 2.0 VE then what block shud i be looking for? i dont mind using liners, just dont want it to twist wen i put the power down.

is it possible to put a VE pump and head on a PD block? if so which is best?


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Reply #6July 15, 2008, 11:48:28 pm

rabbid79

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quick question about PD crank
« Reply #6 on: July 15, 2008, 11:48:28 pm »
There has been some discussion about putting a VE head on a PD block over on TDIClub.  Look up a thread started by AtomicSushi.  I sold him a PD-150 block and he was talking about putting an ALH head on it.  I believe the PD-150 blocks also have significantly longer head bolts than the VE blocks.  I don't know how the other PD blocks compare to the VE blocks.  And you're right, the PDs have the same stroke as the VEs.  Some (if not all) the "2.0" PDs are really 1.95 litres.  VW took some liberties rounding up to 2.0.
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Reply #7July 16, 2008, 12:05:04 pm

lord_verminaard

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quick question about PD crank
« Reply #7 on: July 16, 2008, 12:05:04 pm »
Don't the PD cranks have bigger rod-ends?

Brendan
81 Scirocco 'S -->Soon to be m-TDI
93 Corrado SLC VR6
'86 Golf N/A Diesel  -->Wife's car
1990 Audi CQ
05 New Beetle PD TDI


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Reply #8July 16, 2008, 12:38:06 pm

oldskool rich

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quick question about PD crank
« Reply #8 on: July 16, 2008, 12:38:06 pm »
yes they do, thats why you need crank rods and pistons, then you need to machine the crank pully end to fit.

well worth it for an solid bottom end, only weakness then is the block twisting, and so thats why you need a PD block, cus its the only way to get over 230bhp without building a main girdle.

if im aiming for 300+ thats what i need to do.

btw how much is the most power anyones got out of a tdi? anyone know?


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Reply #9July 17, 2008, 08:58:33 am

Tintin

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quick question about PD crank
« Reply #9 on: July 17, 2008, 08:58:33 am »
Only PD 1.9L 130/150/160 are reinforced.

ALH head on PD bloc are bolt-on and vice versa, you have to change also the crank sensor wheel, front end crank seal housing and T-belt pulley.

The fuel system on PD engine have much more potential for HP, and to get 250bhp it's not an easy task.

Mechanical VE with a so-so pump....  around 180-200bhp max.

Reply #10July 17, 2008, 10:18:20 pm

oldskool rich

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quick question about PD crank
« Reply #10 on: July 17, 2008, 10:18:20 pm »
just a thort, is there any way you can run a PD head and injection system without an ecu or any complex wiring?

what about the 2.0 PD, are they reinforced?

surly you can do a load of head work on ALH head, then crank up the fuel, maybe 12/13mm pp in an M pump, ball bearing turbo, charge cooled, meth/water injection. i recon 300bhp cant be impossible.

what makes the PD so gud? the valves are the same size, is it just the extra fuel pressure?


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Reply #11July 18, 2008, 02:32:01 am

jtanguay

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quick question about PD crank
« Reply #11 on: July 18, 2008, 02:32:01 am »
Quote from: "oldskool rich"
just a thort, is there any way you can run a PD head and injection system without an ecu or any complex wiring?

what about the 2.0 PD, are they reinforced?

surly you can do a load of head work on ALH head, then crank up the fuel, maybe 12/13mm pp in an M pump, ball bearing turbo, charge cooled, meth/water injection. i recon 300bhp cant be impossible.

what makes the PD so gud? the valves are the same size, is it just the extra fuel pressure?


30'000 psi is the main reason.  that and the fact that the CR is reduced considerably because of the injection pressures.  the power potential is very high!  since the injectors are electronic, there is no real way of making them inject 'manually'.  however if you had the money/time/expertise, i would believe it possible to make the engine run in a state not much unlike our IDI's and mTDI's.  you would need to get a distributor type system to run the injectors.  so instead of sparking a plug, it injects fuel.  i think that is the closest you can get to a mechanical system, but comparing that method to the current method, there is a lot lacking.  the fact that the PD motor can inject something like 100 times per second or even greater?  pre-injection, main injection, and post injection?  very sophisticated to say the least!

now if you want to run a PD 'as-is' talk to Tintin.  it can be made run in a 'basic' mode meaning the car doesn't compensate for mass airflow, air temp, fuel temp, and other little goodies that will make the engine run with great efficiency.

if there is a way to get a 2.0 head on your VE that would rule!!! make sure it is the DOHC version though  :twisted:


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Reply #12July 18, 2008, 09:49:06 am

Tintin

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quick question about PD crank
« Reply #12 on: July 18, 2008, 09:49:06 am »
It's not too difficult to install ECU and wiring for the PD motor.

PD have the same Comp. Ratio than VE.

Not multi injection on PD unit, only two stage like VE motor,  these injector open only one time, but with much more pressure.

Look at the old Detroit Diesel 2 stroke engine, It's mechanical injector pump...  héhéhé!!

Reply #13July 18, 2008, 11:40:13 am

jtanguay

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quick question about PD crank
« Reply #13 on: July 18, 2008, 11:40:13 am »
o i thought i remember seeing the multi injection... maybe thats only on the common rail  :(

but PD is still superior because one leak on a common rail and you're stranded  :lol:


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Reply #14July 18, 2008, 12:34:24 pm

lord_verminaard

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quick question about PD crank
« Reply #14 on: July 18, 2008, 12:34:24 pm »
Not really.  CR is superior, which is why VW is switching to it.  Even higher injection pressures, and multiple injection events based on load/rpm.  PD is severely limited in the RPM department- probably more than the VE-pump cars are, and if you want big HP numbers, you need the RPM's.

Brendan
81 Scirocco 'S -->Soon to be m-TDI
93 Corrado SLC VR6
'86 Golf N/A Diesel  -->Wife's car
1990 Audi CQ
05 New Beetle PD TDI


"I am a man, I can change... if I have to.... I guess....."

-Red Green

 

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