curt-s
Supporting Member
- 2,422
- 1,144
- Dec 21, 2008
-
Winnipeg,
MB_Canada
So, oddly, all 8 exhaust valve guides are loose in internal diameter. Granted their specified clearances start where intakes end but from what the shop tells me, theyre usable but outside what would be recommended. Kinda crazy they ended up like that after only 20-22 thousand km. All valves check out minty.
Thankfully guides arent that bad costwise but now its a complete valve job.. springs, guides, seals, labour. Now above $1k in work and parts.
Wife still supportive.
That is what makes me the most nervous..
brake boosting? nah, brah, brick boostin
*edit* now that I really think back, this being the second head, i really wonder if this one got new guides at all. i might be mistaking it for the first one which the first "machine shop" that did the work: bead blasted the entire head including deck surface and ovsrsprayed the cam journals, then proceeded to tell me it would seal fine, decked the surface to fix that and did so at an angle and cut a circle into it due to a bad cutter i guess, and then charged me for the fix.
never that place again, however, they did at least cut my crank correctly. that i had independently measured.
i went back through all my old rtm receipts and found new seals but no guides.
Thankfully guides arent that bad costwise but now its a complete valve job.. springs, guides, seals, labour. Now above $1k in work and parts.
Wife still supportive.
That is what makes me the most nervous..
brake boosting? nah, brah, brick boostin
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*edit* now that I really think back, this being the second head, i really wonder if this one got new guides at all. i might be mistaking it for the first one which the first "machine shop" that did the work: bead blasted the entire head including deck surface and ovsrsprayed the cam journals, then proceeded to tell me it would seal fine, decked the surface to fix that and did so at an angle and cut a circle into it due to a bad cutter i guess, and then charged me for the fix.
never that place again, however, they did at least cut my crank correctly. that i had independently measured.
i went back through all my old rtm receipts and found new seals but no guides.
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