Cylinder heads for 1.8, replace, fix, or upgrade? |
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Cylinder heads for 1.8, replace, fix, or upgrade? |
Hine62 |
Sep 11 2013, 02:36 PM
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#1
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Member Group: Members Posts: 132 Joined: 4-October 12 From: Binghamton, NY Member No.: 15,000 Region Association: None |
When we tuned up the valve gaps I noticed that one of my exhaust ports studs was fixed using a heli-coil. Of course that coil needed to be replace because it pulled out, then when tightening the other side of the same port I noticed the hole the stud was in was cracked, and of course it broke. I tired JB weld but that didn't work.
So my question is... can this problem be fixed, or should the heads be replaced (new or used?), or is there an upgraded head? I'm assuming the engine will need to be pulled out to take the heads off. |
HAM Inc |
Sep 13 2013, 06:20 PM
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#2
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Senior Member Group: Members Posts: 846 Joined: 24-July 06 From: Watkinsville,GA Member No.: 6,499 Region Association: None |
QUOTE I don't know. Len Hoffman was one person I recall saying that the included hardware wasn't up to snuff. He may have documented cases, or he may have simply looked at what was on the heads and decided it was unsuitable. You'd have to ask him. Countless documented cases. Have one in the shop right now. Intake seat fell out at 30K miles. Documented failures in order of most seen. Retainers pulled through causing valve-piston collision. Keeper grooves hammered out so bad the end of the valve failed causing valve-piston collision Seriously hammered ex seats to the point that the adjuster ran out of adjustment Wildly excessive guide wear. Broken intake valve guide. The portion that's exposed in the port. Great castings, shitty parts. |
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