cxn613 Posted February 9, 2015 Share Posted February 9, 2015 Doing head gaskets on our 1995 427 (has inline injection pump). Anything I should look for or common things to change while this far apart. Pistons have some carbon buildup on them but not much. They also have a white residue carbon if that makes sense. Have done a lot of tractor and skid loader heads but this is first truck head. Any advice is appreciated. Thanks Quote Link to comment https://www.bigmacktrucks.com/topic/38854-e-7-427-heads/ Share on other sites More sharing options...
Keffer inc Posted February 9, 2015 Share Posted February 9, 2015 Have you thought of doing an in-frame kit while you're that far into it? My last quote from Mack ( including New poisons) was about $3,300. Comes with almost everything ( she claims anyways, I haven't done it yet) Quote Link to comment https://www.bigmacktrucks.com/topic/38854-e-7-427-heads/#findComment-278279 Share on other sites More sharing options...
wilbur Posted February 9, 2015 Share Posted February 9, 2015 Have you thought of doing an in-frame kit while you're that far into it? My last quote from Mack ( including New poisons) was about $3,300. Comes with almost everything ( she claims anyways, I haven't done it yet)How long ago was that? or was that just parts only? I have a buddy had 6 new sleeves, old pistons, new rings an bearings + labor. Was over 8k. Our Mack dealer gets $108 an hour. and don't work fast. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/38854-e-7-427-heads/#findComment-278282 Share on other sites More sharing options...
Dirtymilkman Posted February 10, 2015 Share Posted February 10, 2015 Be sure to check your liner heights to make sure they're not dropping. I had one with 850,000 miles and you could still see the cross hatches in it but the liner was starting to settle down to far. Quote Link to comment https://www.bigmacktrucks.com/topic/38854-e-7-427-heads/#findComment-278296 Share on other sites More sharing options...
cxn613 Posted February 10, 2015 Author Share Posted February 10, 2015 Cross hatches in liners still look good. I do need to check liner height yet. Quote Link to comment https://www.bigmacktrucks.com/topic/38854-e-7-427-heads/#findComment-278304 Share on other sites More sharing options...
cxn613 Posted February 12, 2015 Author Share Posted February 12, 2015 When checking liner height im noticing were the fire ring set there's sort of a groove. The inner groove seems to be around 27 thousandths but when you move indicator back out towards block it drops to 13 thousandths before you get back on block. Any thoughts? Quote Link to comment https://www.bigmacktrucks.com/topic/38854-e-7-427-heads/#findComment-278677 Share on other sites More sharing options...
Keffer inc Posted February 18, 2015 Share Posted February 18, 2015 Sorry for being late, yes, that was parts only. Quoted in December. Quote Link to comment https://www.bigmacktrucks.com/topic/38854-e-7-427-heads/#findComment-279640 Share on other sites More sharing options...
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