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  #16 (permalink)  
Old 08-11-2017, 05:27 PM
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Maybe the sleeve has sunken into the block.The fire ring on the head gasket most likely rests on top of the sleeve. If the sleeve has sunken down,even a little .... well........

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Old 08-12-2017, 09:11 AM
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I'll find out soon enough, last night I pulled the manifold and rockers and retorqued (bolts moved very very slightly) but still leaking air, I have a family reunion to go to in an hour or so but gonna try to leave at a reasonable time and start tear down, if I need a block I need a block, glad I took good notes when I built this thing, shouldn't be an issue to find a block and have it machined to the same specs and do a block swap, everything else good lol can't throw it away lol
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Old 08-13-2017, 08:43 AM
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Got the head pulled yesterday, here is what i found.. it seems there is 2 cracks from the sleeve to headbolts. also seems that the sleeve is dropped very slightly (a few thousands of an inch id say, just enough to see the step) although the step only seems to be on part of the sleeve


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Old 08-13-2017, 08:48 AM
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I am half tempted to get a new gasket and try torquing it down again. id really like to get a few more months out of it before winter, then i have plenty of time to find a block and get it machined, i know its screwed but honestly dont know if that little step was there previously or of the cracks were there previously and i ust couldnt see them or not. Maybe i could get a better seal with a different style gasket??? am i crazy for even thinking this?? lol
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  #20 (permalink)  
Old 08-13-2017, 08:56 AM
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Originally Posted by AutoMech View Post
I am half tempted to get a new gasket and try torquing it down again. am i crazy for even thinking this?? lol
Personally, I think that would be a "band aid" solution. With both a obvious crack in the block and a sunk sleeve, a refreshed block is in store.

Last edited by ScojoDak; 08-13-2017 at 08:57 AM. Reason: typo
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Old 08-13-2017, 09:24 AM
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Personally, I think that would be a "band aid" solution. With both a obvious crack in the block and a sunk sleeve, a refreshed block is in store.
Oh I know it's a bandaid lol I want a couple more months and a couple thousand miles, just want to get to winter. Also Scojodak, nice to see another Dakota guy on here, I'm Chuck Litty on the Facebook Dakota groups and Oldkota on Dakotart.com this thread is in reguard to my other truck not my Dakota lol
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Old 08-13-2017, 09:29 AM
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If you're not concerned with that block,run some blue devil through it.that should hold it until you get a new block

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Old 08-13-2017, 09:42 AM
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Also Scojodak, nice to see another Dakota guy on here, I'm Chuck Litty on the Facebook Dakota groups and Oldkota on Dakotart.com this thread is in reguard to my other truck not my Dakota lol
Hey Chuck I frequent this board because there's some serious smart fellaz here giving good advice without all the silly comments on FB. Good luck on that fix bro.
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Old 08-13-2017, 09:54 AM
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Hey Chuck I frequent this board because there's some serious smart fellaz here giving good advice without all the silly comments on FB. Good luck on that fix bro.
I fully agree and am here for the same reason lol
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Old 08-13-2017, 09:57 AM
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If you're not concerned with that block,run some blue devil through it.that should hold it until you get a new block

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I'm not concerned with the block but am concerned with the rest of the cooling system, from Wisconsin and need my heater core and radiator to work.. also will that stuff seal combustion chamber pressure leak? I get air into the cooling system but no coolant in cylinder or oil, just air in coolant
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Old 08-14-2017, 12:16 PM
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If your brave, how about oring the block in the car? I have heard they will rent the tool as well. Wont fix the cracks but would probably seal the cylinder for the until winter at least.

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  #27 (permalink)  
Old 08-14-2017, 05:05 PM
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Originally Posted by AutoMech View Post
I'm not concerned with the block but am concerned with the rest of the cooling system, from Wisconsin and need my heater core and radiator to work.. also will that stuff seal combustion chamber pressure leak? I get air into the cooling system but no coolant in cylinder or oil, just air in coolant
Not sure,i put some in a dodge dakota a few years ago and it worked great.

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  #28 (permalink)  
Old 08-14-2017, 06:40 PM
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Quote:
Originally Posted by AutoMech View Post
I'm not concerned with the block but am concerned with the rest of the cooling system, from Wisconsin and need my heater core and radiator to work.. also will that stuff seal combustion chamber pressure leak? I get air into the cooling system but no coolant in cylinder or oil, just air in coolant

RC you said there was a loss of coolant that you could not pinpoint.

The piston is evidence of the coolant leaking INTO the cylinder.

I would try the blue devil.



Or K seal NANO
https://www.kseal.com/
IIRC you just dump it in and leave it. It worked well on a junk I fixed a few years ago.Do some research on it.The stuff is phenominal
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  #29 (permalink)  
Old 08-14-2017, 09:43 PM
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That piston has definitely been steam cleaned by coolant.

Worth a try, new gasket and some pour-in sealer.

Torque the head, let it sit overnight, come back a crack loose and retorque each bolt one at a time following the torque pattern....you'll find the gasket has relaxed overnight and the bolts will make an extra 1/8-1/4 turn further to come back up to torque.

Also whenever you do a retorque, always crack the bolt loose rather than just checking for torque right off the bat....underhead friction will fool a torque wrench when a bolt is at rest. When you loosen slightly and then retorque to full tension you eliminate that static friction from the picture.
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  #30 (permalink)  
Old 08-15-2017, 09:11 AM
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Quote:
Originally Posted by ericnova72 View Post
That piston has definitely been steam cleaned by coolant.



Also whenever you do a retorque, always crack the bolt loose rather than just checking for torque right off the bat....underhead friction will fool a torque wrench when a bolt is at rest. When you loosen slightly and then retorque to full tension you eliminate that static friction from the picture.

Great point !

Greg
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