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Author Topic: IDI to TDI  (Read 30483 times)

Reply #30December 02, 2007, 11:10:15 pm

QuickTD

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IDI to TDI
« Reply #30 on: December 02, 2007, 11:10:15 pm »
Quote from: "jimfoo"
Can I use my AAZ injectors?


 Nope not even close, tdi are hole type (not pintle) and are retained by a toggle clamp, not screwed in.

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Are TDI cam, valves, lifters the same as 1Z?


Lifters, sometimes... If you have an AAZ with small valve stems (7mm) and single springs, then the lifters are the same as a TDI. If it is an older AAZ with double springs and 8mm stems they are different. The cam is a different grind but will physically fit. The AAZ cam may offer a slight a performance improvement as it has more duration, give it a try and let us know... :D Valves are larger in the TDI, and may have smaller stems depending on the year. Either way, the AAZ ones won't fit.

Quote
Also I've seen contradictory posts about using the AAZ pump in am m-TDI. Some say to just swap heads and cam plates, others say much more work is needed.


 There are some out there running the stock AAZ pump with good results. Smog has posted about them before, and stated that they make more power on the AHU than on the AAZ with similar settings. There are others here with more first hand experience than I, and I'll let them fill in the rest.

Reply #31December 05, 2007, 11:47:30 am

burn_your_money

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« Reply #31 on: December 05, 2007, 11:47:30 am »
Make sure to measure the con rod/piston assemblies that you will be using compared to the stock weight. You will have to get the crank rebalanced if the pistons weigh more/less significantly then stock
Tyler

Reply #32December 05, 2007, 01:41:01 pm

jimfoo

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IDI to TDI
« Reply #32 on: December 05, 2007, 01:41:01 pm »
I was, but thanks for making sure. :wink:  I am also getting the pistons coated, and am going to try grooving the piston tops, like on here: http://somender-singh.com/content/view/7/31/ I have seen a lot of discussion on it, and even if it doesn't help, I don't see how it could possibly hurt. I have e-mailed him and he said it does work on TDI diesels, though probably not on IDI. Trying to get it built as cheaply as possible, I am the guinea pig at trying the e-miata/volkswaparts/.... pistons, 10mm TDI head, 1Z/AHU cylinder head./ Wish me luck!!!
Jim
1966 Land-Rover 88" with 1.9 AAZ which has been transformed to an M-TDI
GT1749V, IC , and 2.5" exhaust.
Driven daily

Reply #33December 05, 2007, 01:54:55 pm

burn_your_money

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« Reply #33 on: December 05, 2007, 01:54:55 pm »
Looks interesting. I'm debating getting a turbo from him so please let me know how this stuff looks
Tyler

Reply #34December 05, 2007, 02:11:49 pm

jimfoo

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IDI to TDI
« Reply #34 on: December 05, 2007, 02:11:49 pm »
I will, good or bad. I was trying to find a used head, but was only able to find an ALH locally, or 200k+ 1Z/AHU without camshaft and something else for $500, so said screw that.
Jim
1966 Land-Rover 88" with 1.9 AAZ which has been transformed to an M-TDI
GT1749V, IC , and 2.5" exhaust.
Driven daily

Reply #35December 05, 2007, 11:44:13 pm

jtanguay

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« Reply #35 on: December 05, 2007, 11:44:13 pm »
Quote from: "jimfoo"
I will, good or bad. I was trying to find a used head, but was only able to find an ALH locally, or 200k+ 1Z/AHU without camshaft and something else for $500, so said screw that.


why not buy the complete head from bleachedbora? or does he have any of those kollbenschmidt ones left???

that groove mod looks pretty interesting... definitely worth some testing!  looks like it channels the fuel spray/burn in the direction of the groove.  i couldn't see why it would hurt, unless done improperly or too deep.  i guess the reason that it wouldn't work so well on the IDI's would be because the IDI already has a pre-chamber, and the burning fuel is directed inside a swirl chamber and then into the cylinder; making it just as efficient as the groove mod, but who knows there might be some gains there too.  search for that thread from redrotors - IDI there is a future.


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Reply #36December 06, 2007, 01:41:20 am

jimfoo

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« Reply #36 on: December 06, 2007, 01:41:20 am »
Because if I spend that much on a head, then have to get everything else done to my block, it would be cheaper just buying a whole engine.
Jim
1966 Land-Rover 88" with 1.9 AAZ which has been transformed to an M-TDI
GT1749V, IC , and 2.5" exhaust.
Driven daily

Reply #37December 06, 2007, 12:18:28 pm

jtanguay

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« Reply #37 on: December 06, 2007, 12:18:28 pm »
Quote from: "jimfoo"
Because if I spend that much on a head, then have to get everything else done to my block, it would be cheaper just buying a whole engine.


ah true... but the head is fresh so there won't be any surprises.  remember that i spent around $350 in total to get my head done up... and thats using the old valves.  i just wanted to clean out the black carbon buildup.  ended up getting new lifters because there was some early signs of pitting on a few of them.

i bought my tdi longblock for around $1200 (usd back then it was around $1000) and it is in very good shape.  came with everything (inc. water pump & manifolds) except pump turbo, and accessories.


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Reply #38December 06, 2007, 01:01:13 pm

jimfoo

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« Reply #38 on: December 06, 2007, 01:01:13 pm »
I talked to the machine shop, and if I need everything including guides, it will be $438, which is still cheaper than new complete, but it will still be new. I am hoping it comes with guides and that I can use my IDI lifters and springs. Plus I have 2 IDI cams I can use.
Jim
1966 Land-Rover 88" with 1.9 AAZ which has been transformed to an M-TDI
GT1749V, IC , and 2.5" exhaust.
Driven daily

Reply #39December 13, 2007, 10:14:20 am

jimfoo

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It's happening!
« Reply #39 on: December 13, 2007, 10:14:20 am »
WOOHOO! Parts are starting to come in. I believe the head and pistons are at the PO, so there may be some pictures later. I guess removing the engine and getting it ready for machine work will be the first order of business.
Jim
1966 Land-Rover 88" with 1.9 AAZ which has been transformed to an M-TDI
GT1749V, IC , and 2.5" exhaust.
Driven daily

Reply #40December 13, 2007, 12:23:29 pm

Quantum TD

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« Reply #40 on: December 13, 2007, 12:23:29 pm »
It may be a little late for this, but I just came across this last night. This guy looks like the real deal. The headwork looks amazing, and for just $500-550 (after returned core)  including a new camshaft and lifters, I'm not sure how you could beat that for a rebuilt OEM head. The crappy aftermarket ones go for $700 at wholesale price.

http://forums.tdiclub.com/showthread.php?t=175661&highlight=warped+head

Just a thought for anyone with  head damage that you thought was unrepairable. Apparently, he does 1.6 and 1.9 AAZ stuff too. My only question is whether he can still get camshafts for the old cars too.

Reply #41December 13, 2007, 12:44:58 pm

burn_your_money

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« Reply #41 on: December 13, 2007, 12:44:58 pm »
I've talked to that guy before and tried to get him to join over here but the french scared him away. He does do 1.6 heads as well
Tyler

Reply #42December 13, 2007, 01:05:14 pm

jimfoo

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IDI to TDI
« Reply #42 on: December 13, 2007, 01:05:14 pm »
Quote from: "Quantum TD"
It may be a little late for this, but I just came across this last night. This guy looks like the real deal. The headwork looks amazing, and for just $500-550 (after returned core)  including a new camshaft and lifters, I'm not sure how you could beat that for a rebuilt OEM head. The crappy aftermarket ones go for $700 at wholesale price.

http://forums.tdiclub.com/showthread.php?t=175661&highlight=warped+head

Just a thought for anyone with  head damage that you thought was unrepairable. Apparently, he does 1.6 and 1.9 AAZ stuff too. My only question is whether he can still get camshafts for the old cars too.

Problem is I have no core. Another place I tried wanted $300 more for no core, where as my new bare, though not VW head was $279. I will use what parts I can from my old IDI heads as one was practically new and the other had not that many miles.
Jim
1966 Land-Rover 88" with 1.9 AAZ which has been transformed to an M-TDI
GT1749V, IC , and 2.5" exhaust.
Driven daily

Reply #43December 13, 2007, 03:26:53 pm

jimfoo

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WOHOO! PARTS, and compatible ones to boot!!
« Reply #43 on: December 13, 2007, 03:26:53 pm »

TDI vs AAZ pistons-identical dimensionally!!! YAY!!!


Emiata.com head from injector side.


Looking down from the top.


Looking at the runners. They are a bit rough by the valves, but not too bad by the manifolds. The stock VW head is smoother by the valves, but I wasn't expecting too much for the price.
And now for the best parts!!


The AAZ valves are a perfect fit in the 1Z head!!!


The AAZ lifters are also a perfect fit!!!


And the AAZ cam is a fit!!! This brings my head cost down considerably as I had thought I would have to buy new everything for the head.



My new 10mm TDI head.  M-TDI here I come!!!! :twisted:  :twisted:  :twisted:  :twisted:  :twisted:  :twisted:  :twisted:  :twisted:  :twisted:  :twisted:
Jim
1966 Land-Rover 88" with 1.9 AAZ which has been transformed to an M-TDI
GT1749V, IC , and 2.5" exhaust.
Driven daily

Reply #44December 13, 2007, 03:40:40 pm

jimfoo

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« Reply #44 on: December 13, 2007, 03:40:40 pm »
Just talked to Giles, and he can convert me and look at my injectors for about $1050. I can feel the power now! :twisted:  :twisted:
Jim
1966 Land-Rover 88" with 1.9 AAZ which has been transformed to an M-TDI
GT1749V, IC , and 2.5" exhaust.
Driven daily

 

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