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
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
Are you able to post some pictures?
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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webcams are great, that is a really clear pic, are you using an apple?
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
That you got them out in one piece says alot!
Ian
Bingo
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
where exactly? I would just love to know.
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
any chance you could vend some in my direction?
Darn they've gone back order @ VW Europe
But
delivery date 2nd march ..
i'll update the thread when i get 'em
RESULT
My pre cups have arrived today cost £56.40 inc v.a.t
i can get on with building my engine