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Author Topic: AAZ pre-cup cracks  (Read 4396 times)

February 14, 2010, 06:05:46 pm

MRTANGOMAN

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AAZ pre-cup cracks
« on: February 14, 2010, 06:05:46 pm »
I've started to strip the aaz head, and found some hairline cracks around the openings of the pre-cup..
still useable or do they need replacing ???
« Last Edit: February 15, 2010, 12:27:02 am by MRTANGOMAN »
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Reply #1February 14, 2010, 06:16:44 pm

NintendoKD

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Re: AAZ pre-cup cracks
« Reply #1 on: February 14, 2010, 06:16:44 pm »
Unless you know of somewhere that you can get the precups you won't be able to replace them.  There is a thread on just this subject.  The rule of thumb, so to speak, as I'm told, is that if the cracks run halfway or more then they need replacing.  I am going to be running copious amounts of boost so I am replacing mine regardless.

Kevin
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dnahtasinoivilboeraweb
you know, decarbonated beer is a better coolant than the stuff you buy at the auto store, and is better for you...... really
"If the boost were to rise then the throttle would remain in the wide-open throttle position, which might be fun, but probably not for long"Libbypapa
Reply #2February 14, 2010, 06:26:27 pm

Vincent Waldon

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Re: AAZ pre-cup cracks
« Reply #2 on: February 14, 2010, 06:26:27 pm »
Are you able to post some pictures?
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Vince

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Reply #3February 14, 2010, 07:58:14 pm

Powered by Spearco

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Re: AAZ pre-cup cracks
« Reply #3 on: February 14, 2010, 07:58:14 pm »
These are not AAZ's but 1.6TD one that also have hair line cracks. Take a look.

The one thats #3 has a sharped edge that bent down twards the piston.
The other has a crack about 1/8th inch long at the opening.

.

.

.

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Ok. The pics don't really show  :-\.
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Reply #4February 14, 2010, 08:29:01 pm

NintendoKD

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Re: AAZ pre-cup cracks
« Reply #4 on: February 14, 2010, 08:29:01 pm »
webcams are great, that is a really clear pic, are you using an apple?
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dnahtasinoivilboeraweb
you know, decarbonated beer is a better coolant than the stuff you buy at the auto store, and is better for you...... really
"If the boost were to rise then the throttle would remain in the wide-open throttle position, which might be fun, but probably not for long"Libbypapa
Reply #5February 14, 2010, 08:31:07 pm

Powered by Spearco

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Re: AAZ pre-cup cracks
« Reply #5 on: February 14, 2010, 08:31:07 pm »
GoPro HD
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'87 Syncro Transporter Single Cab "Now TDI"
'78 Rabbit..Gas Weekend Racer
'81 Caddy..Diesel 1.6/1.9 TD hybrid 275HP 349TQ "Retired"
'90 MultiVan, 2.5 Suby Swap, Porsche Brakes
'76 Scirocco TD dragster project
'13 Golf R:. Tuned
'98 Puch G320
Reply #6February 15, 2010, 12:42:41 am

MRTANGOMAN

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Re: AAZ pre-cup cracks
« Reply #6 on: February 15, 2010, 12:42:41 am »
May-be abit over-kill but you can only really see 'em clearly by eye
have taken some photo's but none show the cracks

engine build :-
k24 turbo + boost controller
1mm overbore
h section rods
balanced + lightened
engine girdle
2.5" down pipe and full system
pump mods (poss 10mm head,11mm if i can find one)

so running high boost and extra fuel = cracked pre-cup death ???

may well just get a new head in better condition
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Reply #7February 15, 2010, 06:14:59 am

Henchman

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Re: AAZ pre-cup cracks
« Reply #7 on: February 15, 2010, 06:14:59 am »
That you got them out in one piece says alot!

Ian
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Reply #8February 19, 2010, 03:51:02 pm

MRTANGOMAN

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Re: AAZ pre-cup cracks
« Reply #8 on: February 19, 2010, 03:51:02 pm »
Bingo  ;D

found the VW part number on one of the forums (prob on here lol)

028 103 391m

they are still avi and only £11.50 each plus the tax, but should get some discount on that tho'

it'll save me buying a new head .....

cheers
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Reply #9February 19, 2010, 08:14:23 pm

NintendoKD

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Re: AAZ pre-cup cracks
« Reply #9 on: February 19, 2010, 08:14:23 pm »
where exactly?  I would just love to know.
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dnahtasinoivilboeraweb
you know, decarbonated beer is a better coolant than the stuff you buy at the auto store, and is better for you...... really
"If the boost were to rise then the throttle would remain in the wide-open throttle position, which might be fun, but probably not for long"Libbypapa
Reply #10February 22, 2010, 01:08:59 pm

MRTANGOMAN

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Re: AAZ pre-cup cracks
« Reply #10 on: February 22, 2010, 01:08:59 pm »
Quote from: NintendoKD on February 19, 2010, 08:14:23 pm
where exactly?  I would just love to know.

Just ordered 4 from work (u.k. VW commercial dealer) £12.00 each plus tax, but should get some discount  ;D
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Reply #11February 22, 2010, 05:56:05 pm

NintendoKD

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Re: AAZ pre-cup cracks
« Reply #11 on: February 22, 2010, 05:56:05 pm »
any chance you could vend some in my direction? ;D
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dnahtasinoivilboeraweb
you know, decarbonated beer is a better coolant than the stuff you buy at the auto store, and is better for you...... really
"If the boost were to rise then the throttle would remain in the wide-open throttle position, which might be fun, but probably not for long"Libbypapa
Reply #12February 24, 2010, 07:11:11 am

MRTANGOMAN

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Re: AAZ pre-cup cracks
« Reply #12 on: February 24, 2010, 07:11:11 am »
Darn they've gone back order @ VW Europe  :'(

But  ;D delivery date 2nd march ..

i'll update the thread when i get 'em
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Reply #13February 25, 2010, 02:26:41 pm

MRTANGOMAN

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Re: AAZ pre-cup cracks
« Reply #13 on: February 25, 2010, 02:26:41 pm »
RESULT ;D
My pre cups have arrived today cost £56.40 inc v.a.t

i can get on with building my engine
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