Join Date: Sep 2016
Location: South central Texas
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I also have an '07 Elantra 2.0, unlike you I bought a "rebuilt?" head online ( big mistake). I'm old enough to know better, shame on me!
I also tried to find shims locally no luck, online were too expensive!!
anyway, Intake standard is 1.7566in / 44.618mm
limit is 1.7487in / 44.518mm
Exhaust standard is 1.7527in / 44.518mm
limit is 1.7487in / 44.418mm
According to my Haynes manual
The rebuilt head was supposed to have been steam cleaned, it was steam cleaned fully assembled. Oil galleys filthy, valve clearance way out of whack ( would not have run!), ports were filthy, underside of lifters filthy, shims too thick causing extremely thin valve clearance, head arrived w/out valve chain or cvvt unit. Had to transfer cvvt unit, I bought new chain and tensioner. I got the head cleaner w/scrub brushes, dawn, degreaser and compressed air, than their "steam cleaning".
I used a digital dial caliper to check shims and diamond hone to get the shims close to the standard, they were too thick. I'd done too much work on head to return it, I probably would have received another filthy head in same or worse condition.
After re-assembly and installed my car ran great, before timing belt stripped out, I was getting about 31mpg combined, after newer head about 32mpg combined. I'm happy now. If I still had my equipment I would have done work myself, didn't have room for it all after moving.
Word to the wise; have mechanical work done DIY, or by a reputable local shop.
Last edited by mkm558; 09-11-2017 at 03:34 PM.