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Author Topic: IDI to TDI  (Read 48011 times)

November 25, 2007, 07:29:01 pm

jimfoo

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IDI to TDI
« on: November 25, 2007, 07:29:01 pm »
I'm pretty sure I remember hearing an IDI can be converted to a TDI. What all is needed, just a head, pistons, injectors and an M-TDI pump? I think it might be cheaper than buying a new engine, and not that much more than fixing the IDI, not including the pump of course.


Jim
1966 Land-Rover 88" with 1.9 1Z which has been transformed to an M-TDI
TFO35 mechanically controlled VNT, IC , and 2.5" exhaust.
Driven daily

Reply #1November 25, 2007, 07:41:17 pm

Slave2School

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IDI to TDI
« Reply #1 on: November 25, 2007, 07:41:17 pm »
I'm not 100% sure, but I recall a firend of mine looking to do that same thing.  Not sure if he looked at the ALH head or what combo, but the cooling passages did not match up at all so he gave up on that idea.  Again there maybe a combo (1z?) that does fit and my friend did not investigate it far enough.
Waiting for a bigger better diesel to come along.
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Reply #2November 25, 2007, 10:00:11 pm

jtanguay

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IDI to TDI
« Reply #2 on: November 25, 2007, 10:00:11 pm »
Quote from: "Slave2School"
I'm not 100% sure, but I recall a firend of mine looking to do that same thing.  Not sure if he looked at the ALH head or what combo, but the cooling passages did not match up at all so he gave up on that idea.  Again there maybe a combo (1z?) that does fit and my friend did not investigate it far enough.


apparently the 1Z is basically a 1.9 IDI block?  the only difference is crank/rods/pistons/head???

maybe price out all that stuff before you go crazy.  if you can get the complete head from bleachedbora for a good price, why not?  at least you won't have to worry about inserts falling into the cylinders.  

also a good mechanical TDI pump will run you into $1000 approx.

and TDI's run cooler  :wink:


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Reply #3November 26, 2007, 09:39:00 am

zaprzal

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IDI to TDI
« Reply #3 on: November 26, 2007, 09:39:00 am »
I think early tdi (1z) head will fit. A friend of mine compared head gaskets 1z and td aaz...

Do you know if any DI pistons fit 1.6td rod?
1.6td 170hp 290nm powered by Holset - sold
golf mk2 1.9tdi PD 193hp/400nm ;)

Reply #4November 26, 2007, 09:56:29 am

jimfoo

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IDI to TDI
« Reply #4 on: November 26, 2007, 09:56:29 am »
Quote from: "zaprzal"
I think early tdi (1z) head will fit. A friend of mine compared head gaskets 1z and td aaz...

Do you know if any DI pistons fit 1.6td rod?

Then maybe I will be going in that direction. I have no idea about the pistons fitting 1.6 rods. But I don't see why they couldn't be reamed or bushed to fit if they are different.
Jim
1966 Land-Rover 88" with 1.9 1Z which has been transformed to an M-TDI
TFO35 mechanically controlled VNT, IC , and 2.5" exhaust.
Driven daily

Reply #5November 26, 2007, 04:10:57 pm

zaprzal

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IDI to TDI
« Reply #5 on: November 26, 2007, 04:10:57 pm »
1.6 piston pin is smaller than 1,9  :(
1.6td 170hp 290nm powered by Holset - sold
golf mk2 1.9tdi PD 193hp/400nm ;)

Reply #6November 26, 2007, 04:21:46 pm

rallydiesel

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IDI to TDI
« Reply #6 on: November 26, 2007, 04:21:46 pm »
Pete from volkspart is working on putting together a IDI to TDI kit.
2006 Jetta TDI - gtb1749v, Malone 2, Frank's Titan 2 cam, VR6 clutch....
1991 Jetta TD - sold :(
2001 Golf TDI - Son's
1981 Rabbit - BEW tdi swap project

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Reply #7November 26, 2007, 08:03:49 pm

jtanguay

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IDI to TDI
« Reply #7 on: November 26, 2007, 08:03:49 pm »
Quote from: "rallydiesel"
Pete from volkspart is working on putting together a IDI to TDI kit.


i can't wait to see how that will work.  

Quote
TDI conversion kit for 1.6 IDI engines. I am working on converting a 1.6 diesel to a 1.6 TDI. The kit will include a complete TDI head, TDI pistons with rings, and cylinder sleeves. This is an incredible project. I am hoping for at least a 10% increase in efficiency. You will use your old injector pump, and timing belt. I hope to offer this for under $1000. This will be a complete 1.6 engine overhaul kit. You will end up with a new 1.6 TDI engine! I hope to offer this kit early 2008. I hope to have a prototype engine running shortly...


why would one need a cylinder sleeve to use a piston that is a larger size? maybe he is using 1.4L TDI pistons???  maybe those share the same piston pin size as the 1.6 diesels??? if that works that would be incredible.  although re-using the 1.6 pump seems sketchy.

would there be any issues with using cylinder sleeves, as in lack of heat transfer between the sleeve and the block? warpage from overheat? or am i wrong?


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Reply #8November 26, 2007, 09:10:22 pm

935racer

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IDI to TDI
« Reply #8 on: November 26, 2007, 09:10:22 pm »
Quote
Pete from volkspart is working on putting together a IDI to TDI kit.


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Reply #9November 27, 2007, 11:58:44 am

burn_your_money

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IDI to TDI
« Reply #9 on: November 27, 2007, 11:58:44 am »
Quote from: "jtanguay"
would there be any issues with using cylinder sleeves, as in lack of heat transfer between the sleeve and the block? warpage from overheat? or am i wrong?


This came up in class today. My prof said it's not common practice because of costs. From the sounds of it you wouldn't have a problem.
Tyler

Reply #10November 27, 2007, 03:26:47 pm

jtanguay

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IDI to TDI
« Reply #10 on: November 27, 2007, 03:26:47 pm »
Quote from: "burn_your_money"
Quote from: "jtanguay"
would there be any issues with using cylinder sleeves, as in lack of heat transfer between the sleeve and the block? warpage from overheat? or am i wrong?


This came up in class today. My prof said it's not common practice because of costs. From the sounds of it you wouldn't have a problem.


thats some good news... rebuilding 1.6TD's might be easier than i thought... just sleeve the block and re-use the old pistons with some new rings, possibly total seal?  i'm gonna try that out on one of the 1.6TD's i have :)

jimfoo this might be a possible route for you.  punch out your block and sleeve it.  you'd get to re-use your original pistons  :wink:


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Reply #11November 27, 2007, 04:03:16 pm

burn_your_money

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« Reply #11 on: November 27, 2007, 04:03:16 pm »
It's not quite the simple. You need to heat the block up and freeze the sleeve in liquid nitrogen and have it pressed in and then you need to have it honed. You'll probably also have to have the top of the block machined for the flange and then you have the task of finding sleeves
Tyler

Reply #12November 27, 2007, 04:37:12 pm

jtanguay

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IDI to TDI
« Reply #12 on: November 27, 2007, 04:37:12 pm »
Quote from: "burn_your_money"
It's not quite the simple. You need to heat the block up and freeze the sleeve in liquid nitrogen and have it pressed in and then you need to have it honed. You'll probably also have to have the top of the block machined for the flange and then you have the task of finding sleeves


well the sleeves are on www.dieselvw.com for around $25 a piece.

it does seem like a lot of work though...


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Reply #13November 27, 2007, 04:45:55 pm

935racer

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IDI to TDI
« Reply #13 on: November 27, 2007, 04:45:55 pm »
Has anyone actually bought parts from there?

Reply #14November 27, 2007, 05:08:43 pm

jimfoo

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IDI to TDI
« Reply #14 on: November 27, 2007, 05:08:43 pm »
"HI, the problem is that the TDI piston is longer top to bottom than the
IDI piston and for that reason the conversion won't work.  

I am working on a 1.6 to TDI conversion, but I found special pistons
that will fit the block (and won't stick out too much).  

Pete"
Guess the answer is no, it won't work for me.
Jim
1966 Land-Rover 88" with 1.9 1Z which has been transformed to an M-TDI
TFO35 mechanically controlled VNT, IC , and 2.5" exhaust.
Driven daily

 

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