Possible cracked head

Discussion in '6.9L IH & 7.3L IDI Diesels' started by Alwaysreadyrob, Dec 4, 2017.

  1. 79jasper

    79jasper Chickenhawk

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    So since I can't keep up with if he's talking IDI or PSD.
    I thought Justin had came up with the IDI heads are already pretty free flowing. Said they outflow the 6.0 PSD heads.

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  2. Thewespaul

    Thewespaul Supporting Member Supporting Member

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    These heads flow great. But any head can benefit from cleaning up, especially older castings benefit from cleaning up some rough spots. Most the time I’ve spent porting is on the exhaust side of our heads, the intake is pretty good already
     
  3. 79jasper

    79jasper Chickenhawk

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    So more polishing than porting.

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  4. Thewespaul

    Thewespaul Supporting Member Supporting Member

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    Yes and no, I really only port on the exhaust side, just touching up some spots on intake then smoothing everywhere. I was going to do a thread on it but there’s so much debate with porting I decided against it.LOL

    I do it as apart of most my rebuilds
     
  5. Alwaysreadyrob

    Alwaysreadyrob IDI TURBO

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    Well, if i have my threads straight... the 94 with the coolant disappearing i suspect cracked head or head gasket... but no leaking is happening.

    If its the transmission overheating then thats my 2002 Powerstroke.... which should be fixed today because my mishimoto trans cooler came in last night
     
  6. 79jasper

    79jasper Chickenhawk

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    Oh you mean like the thin wall between the intake and coolant passages? Lol

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  7. Thewespaul

    Thewespaul Supporting Member Supporting Member

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    Haha sure “thin” is relative, to someone that has done this a lot these idi heads have a lot more meat than a lot of gasser heads that get much more agressive porting. Don’t knock it till you’ve tried it yourself ;)
     
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  8. Kiwif150

    Kiwif150 Registered User

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    Not to hijack the thread but who is a good source of new heads for the 7.3 idi? Looking on google it comes up with puredieselpower.com but it's a dead link (to me anyway) or US diesel parts.
     
  9. Thewespaul

    Thewespaul Supporting Member Supporting Member

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    I don’t believe there is a source for new heads anymore. Just maybe some leftover new old stock if you can find it
     
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  10. vegas39

    vegas39 Full Access Member

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    Where abouts do you live up there? I grew up in Oakhurst.
    Really miss that place and after 18 years in Vegas, I'm more than ready to go back
     
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  11. Alwaysreadyrob

    Alwaysreadyrob IDI TURBO

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    I live behind the track at Yosemite High
     
  12. vegas39

    vegas39 Full Access Member

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    Oh wow. Yep, went to Yosemite high back in the 80's
    Good times
     
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  13. Alwaysreadyrob

    Alwaysreadyrob IDI TURBO

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    I was on Sierra Hotshots when you were here.
     
  14. jrollf

    jrollf Registered User

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    Back in 2009 I was able to get new heads from Clear Water Cylinder Heads https://www.cylinder-heads.com/

    I don't see the cylinder heads listed on their website anymore but might be worth a phone call to them and see if they still can get them.

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  15. Joseph Davis

    Joseph Davis Registered User

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    just do a radiator pressure test and start looking for leaks. pump it up to 13psi, if the leak is external you will see the water dripping. you can do it cold.
     
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