Author Topic: Cracked head at injector base!!??  (Read 11671 times)

Reply #15January 25, 2006, 07:35:18 pm

fspGTD

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Cracked head at injector base!!??
« Reply #15 on: January 25, 2006, 07:35:18 pm »
That is good news!  Since you are already planning on rebuilding the head, it is much less of a problem to fix this at the same time.  :)  Not all engine builders can aluminum head weld, you might need to ask around.  The best VW Diesel engine rebuilders should have no problem with this (and might as well get any cracks around the valves on the combustion chamber surfaces also welded up at the same time!)
Jake Russell
'81 VW Rabbit GTD Autocrosser 1.6lTD, SCCA FSP Class
Dieselicious Turbocharger Upgrade/Rebuild Kits

Reply #16January 26, 2006, 05:08:50 am

therabbittree

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Cracked head at injector base!!??
« Reply #16 on: January 26, 2006, 05:08:50 am »
yup thats why I have a TDI in my caddy instead of a 1.6TD ..you can crack em installing them too don't use a racket with a long handle....i still have the head....
thanks
Deo

Reply #17January 26, 2006, 04:00:05 pm

Mark(The Miser)UK

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Cracked head at injector base!!??
« Reply #17 on: January 26, 2006, 04:00:05 pm »
Quote from: "Black Smokin' Diesel"
Thanks for the tip Malone. Unfortunately, I was pushing toward the head when it happened  :?  :(

It makes things even more mysterious. Ohhh the drama!


At least the prognosis is good. In my Quantum I push/pull longitudinally. Surely this is the safest direction. I also naturally [don't we all] oppose the non-twisting leverage by pulling/pushing of the centre stem....
Good luck
Mark-The-Miser-UK

"There's nothing like driving past a bonfire and then realising; its my car on fire!"

I'm not here to help... I'm here to Pro-Volke"

Be like meeee: drive a Quantum TD
 ...The best work-horse after the cart...

Reply #18February 01, 2006, 11:17:47 am

myke_w

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Cracked head at injector base!!??
« Reply #18 on: February 01, 2006, 11:17:47 am »
Hmm, I use an impact...
just kidding..
I am wondering if heat could help..
Also, would it be better to try this on a really warm engine rather than cold?
Contact me for hard to find for idi and tdi parts


Reply #19February 01, 2006, 09:07:18 pm

MacGyver

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Cracked head at injector base!!??
« Reply #19 on: February 01, 2006, 09:07:18 pm »
Been there done that...

Quote from: "RabbitGTDguy"
I cracked mine on the old 1.6 NA engine that was orginally in the Rabbit that I have... Mine was so bad the piece actually fell off. I took it to an experienced welder and he was able to weld it for me and it worked fine. Never had a problem with it. Injector screwed in and still sealed as well... I think you could still use it if you want. My repair cost me like $45 at the time...

Joe


Exactly what happened to me ~15yrs ago on my 1.6TD when I removed injectors to rebuild. Steel injector was somewhat seized in alum head after 260k km, being warm might of helped, working it back & forth a little may have helped too instead of winding it right out like I did :(

Fortunately, QuickTD & his brother welded mine. Due to my then uneasiness with 'major' work like pulling a head :roll:  they actually did it on the car!
Made it more difficult for space, and would have been nicer to weld if it was entirely heated. It cracked beside the new weld & had to be done again.
Come to think of it, I have no idea why they put up with me :lol:
But it did work, and saved the head, never had any problems with it for the next 110k km I had it.
So long as the sealing surface is intact, and the threads are repaired well enough to hold the injector in, you're fine.

I second the idea of applying anti-seize on reinstall. Be sure to use the good copper stuff.

Reply #20February 02, 2006, 02:58:44 am

Black Smokin' Diesel

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Cracked head at injector base!!??
« Reply #20 on: February 02, 2006, 02:58:44 am »
Quote from: "MacGyver"
Been there done that...

Quote from: "RabbitGTDguy"
I cracked mine on the old 1.6 NA engine that was orginally in the Rabbit that I have... Mine was so bad the piece actually fell off. I took it to an experienced welder and he was able to weld it for me and it worked fine. Never had a problem with it. Injector screwed in and still sealed as well... I think you could still use it if you want. My repair cost me like $45 at the time...

Joe


Exactly what happened to me ~15yrs ago on my 1.6TD when I removed injectors to rebuild. Steel injector was somewhat seized in alum head after 260k km, being warm might of helped, working it back & forth a little may have helped too instead of winding it right out like I did :(

Fortunately, QuickTD & his brother welded mine. Due to my then uneasiness with 'major' work like pulling a head :roll:  they actually did it on the car!
Made it more difficult for space, and would have been nicer to weld if it was entirely heated. It cracked beside the new weld & had to be done again.
Come to think of it, I have no idea why they put up with me :lol:
But it did work, and saved the head, never had any problems with it for the next 110k km I had it.
So long as the sealing surface is intact, and the threads are repaired well enough to hold the injector in, you're fine.

I second the idea of applying anti-seize on reinstall. Be sure to use the good copper stuff.


Thanks for the tip!
91 Passat syncro 1.8T swapped.