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IDI to TDI
by
jimfoo
on 25 Nov, 2007 19:29
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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.
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#1
by
Slave2School
on 25 Nov, 2007 19:41
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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.
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#2
by
jtanguay
on 25 Nov, 2007 22:00
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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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#3
by
zaprzal
on 26 Nov, 2007 09:39
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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?
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#4
by
jimfoo
on 26 Nov, 2007 09:56
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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.
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#5
by
zaprzal
on 26 Nov, 2007 16:10
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1.6 piston pin is smaller than 1,9
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#6
by
rallydiesel
on 26 Nov, 2007 16:21
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Pete from volkspart is working on putting together a IDI to TDI kit.
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#7
by
jtanguay
on 26 Nov, 2007 20:03
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Pete from volkspart is working on putting together a IDI to TDI kit.
i can't wait to see how that will work.
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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#8
by
935racer
on 26 Nov, 2007 21:10
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Pete from volkspart is working on putting together a IDI to TDI kit.
Ghetto.
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#9
by
burn_your_money
on 27 Nov, 2007 11:58
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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.
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#10
by
jtanguay
on 27 Nov, 2007 15:26
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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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#11
by
burn_your_money
on 27 Nov, 2007 16:03
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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
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#12
by
jtanguay
on 27 Nov, 2007 16:37
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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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#13
by
935racer
on 27 Nov, 2007 16:45
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Has anyone actually bought parts from there?
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#14
by
jimfoo
on 27 Nov, 2007 17:08
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"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.