VW 1.6 NA to Turbo swap! Questions and Progress.

[acidtonic]

What about the crack between the valves on the head? In your photo on reply #92 it looks like the crack between the valves will eventually cause failure after enough heat cycles.

[vanbcguy]

What about the crack between the valves on the head? In your photo on reply #92 it looks like the crack between the valves will eventually cause failure after enough heat cycles.

Those cracks are present in most IDI heads. The general rule is they're no problem unless they're thicker than a dime.

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[Tmarkle]

What about the crack between the valves on the head? In your photo on reply #92 it looks like the crack between the valves will eventually cause failure after enough heat cycles.

From my understanding very small cracks like those are common.


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[Gizmoman]

Yup,
I had em on mine and it ran fine.
That's only one head though, one guy, on this forum, on the www.
But then, what are the chances?

I did have one prechamber loose and the cracks were no where close to it. The loose prechamber was one on #4 and that's the piston that melted : (.

[RabbitJockey]

i have seen only a few heads that did not have those cracks.

[fatmobile]

Where do you guys get that little cap that goes over the valve stem so it doesn't catch on the seal?

[Gizmoman]

Where do you guys get that little cap that goes over the valve stem so it doesn't catch on the seal?

Are you talking about protecting the seal when you slide the valve stem in?
If so, I used painters tape to cover the groove in the stem.
Maybe I don't understand the question:?

[Tmarkle]

I broke down yesterday and due to lack of time I took the head to a machinist. I've been spending 12-14 hours a day in a swather so I've been pretty short on time. Hopefully I can get it put together this Friday.


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[ORCoaster]

The little plastic protective caps generally come with a set of seals.  You put that on the stem and slide the seal over it.  Then remove the cap and use it on another valve stem.  I have never seen a place where you can just buy the cap. 

In a pinch I might try using a straw.

[fatmobile]

Thanks.
 I got one with some valves but wore it out and was wondering what to use so the keeper grooves don't catch the seal.
 I'll check what I can do with a straw.

[Tmarkle]

Almost put back together. Rebuilt head and rebuilt injectors, plus numerous seals and hoses replaced. Hoping she runs good after all this time and money spent.


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[Tmarkle]

Well things were going well... until I forgot to remove the cam lock when trying to turn over the motor. Cracked a chip out of the slot on the rear. I'm beginning to hate working on this dumb thing. Anyone know if a mechanical cam will fit a hydraulic head? Also Bentley says 33ft/lb for the cam sprocket bolt but some people on other forums say it should be higher? I'm thinking best bet is to listen to to the VW bible but clearly my judgement isn't worth a crap after this dumb muck up.


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[vanbcguy]

Lots of folks out there with a chipped timing slot on their cam. Won't hurt anything, just run it.

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[Gizmoman]

Lots of folks out there with a chipped timing slot on their cam. Won't hurt anything, just run it.

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There you go. You've come a long way, don't let this mishap chill your efforts, plenty of folks have done the same thing or worse. During my rebuild, I torqued down my brand spanking new Klobenschmidt head with one of the valves open and sitting on a piston.

[Tmarkle]

Well I feel much better now lol, I guess I assumed to quickly it was shot. I was panicking when it wouldn't turn over and saw the cam lock still in and it totally ruined my night when I saw it cracked, I just put my tools away and went home.


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