Turbo type4 fastback:)
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- jonas_linder
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- jonas n
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today i picked up my heads that my friend has done some welding on the headgasket always broke at the top but now it should be strong enought! by the way im going without gasket now...
Will this affect the cooling too mutch...hmmm
Will this affect the cooling too mutch...hmmm
Last edited by jonas n on Tue May 30, 2006 2:46 pm, edited 1 time in total.
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- Wesayso
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You can always go back to your welder and try this:jonas n wrote: will this affect the cooling too mutch....hmmm...
That's how Klaus, http://www.klaus-kaefertuning.de/ does it to make it stronger. That should help with cooling and serve its purpose .
- jonas_linder
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- Wally
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And the reason you want to make it stronger in that area is because all type 4 heads that leaked that I have seen, had warped (sp?) in that plane.
Reason as I see it is that the head stud pattern of the type 4 is too big in the 'horizontal' plane versus the vertical plane.
Vertical distance of head studs is appr. 78mm (top of my head) and the horizontal distance is 94 (or there abouts), where the outer lower head studs are even further apart by 6 more mm!!
Thats why they start to leak first at the bottom (also because of more heat there, because of less cooling) and then at the top.
Tightening the heads too much will speed up the process of 'curving' the head over the cylinder. The head warps over the cylinder in the horizontal plane...
I hope I have described it in a way that it is understandable (?)
Reason as I see it is that the head stud pattern of the type 4 is too big in the 'horizontal' plane versus the vertical plane.
Vertical distance of head studs is appr. 78mm (top of my head) and the horizontal distance is 94 (or there abouts), where the outer lower head studs are even further apart by 6 more mm!!
Thats why they start to leak first at the bottom (also because of more heat there, because of less cooling) and then at the top.
Tightening the heads too much will speed up the process of 'curving' the head over the cylinder. The head warps over the cylinder in the horizontal plane...
I hope I have described it in a way that it is understandable (?)
T4T: 2,4ltr Type 4 Turbo engine, 10.58 1/4 mi
www.apfelbeck.nl
"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks
www.apfelbeck.nl
"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks
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- jonas n
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Hi guys!
It´s been a while since i updated my tread... The car has been teared apart for some updates,the rear "subframe" has been mounted solid and the tranny is beeing put together again.. i also has welded alot of rust.... I´ll try to put up some pics when i get a descent computer running again;)
/Jonas
It´s been a while since i updated my tread... The car has been teared apart for some updates,the rear "subframe" has been mounted solid and the tranny is beeing put together again.. i also has welded alot of rust.... I´ll try to put up some pics when i get a descent computer running again;)
/Jonas