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04-29-2019, 02:51 PM
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#1
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Name: Cummins12v
Title: Diesel Enthusiast
Status: Not Here
Join Date: Nov 2007
Location: Texas
Member`s Gallery
Posts: 108
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blown head gasket ?
i have an oringed head that has been on the truck for around 6 years without any issues. i recently put a bigger turbo and pump on my truck took it for 2 test runs blew boots both times and now i just noticed coolant starting to drip/run from between head and block next to #3. nothing is mixing. what would have caused this to happen? i would imagine everything would be mixing?motor has prostreet 887 pump 5x18s and 69/80 compounds
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96 dually....money pit
2007 dually work... also money pit
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04-29-2019, 07:42 PM
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#2
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Name: Crawler
Title: Press the BIG RED button.
Status: Not Here
Join Date: Apr 2006
Location: NE Texas
Member`s Gallery
Posts: 837
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If the gasket blew out without crossing the oil passages, then you won’t get a mix.
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04-29-2019, 08:58 PM
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#3
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Name: R1raptor
Title: Diesel Enthusiast
Status: Not Here
Join Date: Nov 2011
Location: North florida
Member`s Gallery
Posts: 127
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Yep I’ve seen a lot of older 12 valves. Leaking water out the exhaust side of head and never mix. I believe it’s a age and heat issue. And when you remove it the gasket seems more brittle under the exhaust runners. I’ve got 2 in the shop now and one last week with the same issue.
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93 chevy 3500 : 215hp p-pump, 5sp, 19*, afc tuned ,plate delete , 3.54 d80 , slipping clutch.
83 chevy 3500 : 215 hp p-pump,5sp,19*,afc tuned,plate delete,rack plug, valair ceramic single,3.42 14b,
Vintage air, in need of twins.
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04-30-2019, 08:05 AM
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#4
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Name: bateman
Title: Too Much Time
Status: Not Here
Join Date: Feb 2019
Location: Alabama
Member`s Gallery
Posts: 2,672
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Mine currently leaks under the manifold, between cylinder 5 and 6. Been that way for a while now. Coolant only. I'm not sure if it will get worse.
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04-30-2019, 08:08 AM
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#5
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Name: Rich dzl
Title: 12v guru
Status: Not Here
Join Date: Mar 2011
Member`s Gallery
Posts: 741
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How many times you checked the head studs in that time ?
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04-30-2019, 01:53 PM
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#6
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Name: Cummins12v
Title: Diesel Enthusiast
Status: Not Here
Join Date: Nov 2007
Location: Texas
Member`s Gallery
Posts: 108
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Quote:
Originally Posted by Rich dzl
How many times you checked the head studs in that time ?
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Honestly I did one retorque a month after putting motor together... haven’t messed with them since.
__________________
96 dually....money pit
2007 dually work... also money pit
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04-30-2019, 01:59 PM
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#7
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Name: Cummins12v
Title: Diesel Enthusiast
Status: Not Here
Join Date: Nov 2007
Location: Texas
Member`s Gallery
Posts: 108
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Quote:
Originally Posted by R1raptor
Yep I’ve seen a lot of older 12 valves. Leaking water out the exhaust side of head and never mix. I believe it’s a age and heat issue. And when you remove it the gasket seems more brittle under the exhaust runners. I’ve got 2 in the shop now and one last week with the same issue.
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This makes sense i know I didn’t blow a fire ring I’m thinking it’s from heat I just hope my head is ok and just the gasket is what failed
__________________
96 dually....money pit
2007 dually work... also money pit
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04-30-2019, 02:13 PM
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#8
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Name: bateman
Title: Too Much Time
Status: Not Here
Join Date: Feb 2019
Location: Alabama
Member`s Gallery
Posts: 2,672
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This small drip from the manifold side, is it imperative that it be fixed immediately?
Mine is inconsistent and has never dropped the level of coolant enough to notice. Is yours the same, Cummins12V, or is it leaking more/ more frequently?
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04-30-2019, 06:44 PM
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#9
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Name: 95cummins5.9
Title: Old man ***** gossiper
Status: Not Here
Join Date: Jun 2012
Location: U.S.A
Member`s Gallery
Posts: 4,719
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I've ran them without worry, lots of miles and a seep on the passenger side, mine only leaked during warm up and cool down, nothing after running temp.
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Quote:
Originally Posted by jfaulkner
puzzy, tune it.
I don't own anything stock, from engines to boobies I've modded them all. Life is too short to live with mediocre chit.
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04-30-2019, 09:38 PM
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#10
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Name: Crawler
Title: Press the BIG RED button.
Status: Not Here
Join Date: Apr 2006
Location: NE Texas
Member`s Gallery
Posts: 837
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The main concern with running too long on a blown gasket without cross leaks, is that if there is escaping combustion; you can etch the block/head.
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04-30-2019, 09:55 PM
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#11
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Name: Cummins12v
Title: Diesel Enthusiast
Status: Not Here
Join Date: Nov 2007
Location: Texas
Member`s Gallery
Posts: 108
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Quote:
Originally Posted by bateman
This small drip from the manifold side, is it imperative that it be fixed immediately?
Mine is inconsistent and has never dropped the level of coolant enough to notice. Is yours the same, Cummins12V, or is it leaking more/ more frequently?
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yeah mine is similar. im just going to replace the gasket this will drive me nuts. you should do the same its super easy
__________________
96 dually....money pit
2007 dually work... also money pit
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05-01-2019, 06:25 AM
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#12
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Name: jasonc
Title: Too Much Time
Status: Not Here
Join Date: Nov 2009
Member`s Gallery
Posts: 4,412
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Keep some antifreeze in it, dont just fill with water, or The deck will get pitted up bad in that area. Other than that, you could probably drive it another 50k miles.
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05-01-2019, 08:22 AM
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#13
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Name: Mudn_1
Title: Sweet Home
Status: Not Here
Join Date: Apr 2007
Location: Trussville
Member`s Gallery
Posts: 5,290
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Quote:
Originally Posted by Crawler
The main concern with running too long on a blown gasket without cross leaks, is that if there is escaping combustion; you can etch the block/head.
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This^^^I drove one for a while and pitted the hell out of the block and head.
__________________
"One Up'N The Competition"
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05-01-2019, 08:30 AM
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#14
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Name: Snedge
Title: Comp Diesel Sponsor
Status: Not Here
Join Date: Sep 2006
Location: Western Pa.
Member`s Gallery
Posts: 18,858
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Fix it.
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05-01-2019, 09:15 AM
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#15
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Name: bateman
Title: Too Much Time
Status: Not Here
Join Date: Feb 2019
Location: Alabama
Member`s Gallery
Posts: 2,672
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Dang. I figured as much. I don't think I'm losing compression and probably talking about a teaspoon worth of coolant drips total over 6 months, but it sounds like a good reason to ring it.
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05-01-2019, 12:53 PM
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#16
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Name: Snedge
Title: Comp Diesel Sponsor
Status: Not Here
Join Date: Sep 2006
Location: Western Pa.
Member`s Gallery
Posts: 18,858
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Quote:
Originally Posted by bateman
Dang. I figured as much. I don't think I'm losing compression and probably talking about a teaspoon worth of coolant drips total over 6 months, but it sounds like a good reason to ring it.
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For the record I was addressing the OP. The leak you have may be a run it and watch it type of leak. I mean, if your not adding any coolant ???
O-ringing is fun, so you do what you want.
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05-01-2019, 01:10 PM
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#17
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Name: bateman
Title: Too Much Time
Status: Not Here
Join Date: Feb 2019
Location: Alabama
Member`s Gallery
Posts: 2,672
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Got ya.
Sound like OP making a bit of steam with his setup. I'd probably be more concerned if I was running that kind of power.
Cummins12v, when you replace that headgasket get a pic of where it blew out if possible.
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05-03-2019, 11:57 AM
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#18
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Name: Cummins12v
Title: Diesel Enthusiast
Status: Not Here
Join Date: Nov 2007
Location: Texas
Member`s Gallery
Posts: 108
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Quote:
Originally Posted by bateman
Got ya.
Sound like OP making a bit of steam with his setup. I'd probably be more concerned if I was running that kind of power.
Cummins12v, when you replace that headgasket get a pic of where it blew out if possible.
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It stops leaking once it warms up. If I get rained out I’ll fix it tomorrow and post some pictures.
__________________
96 dually....money pit
2007 dually work... also money pit
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05-06-2019, 12:44 PM
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#19
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Name: RAMblin Fever
Title: Green Behind the Ears
Status: Not Here
Join Date: Oct 2015
Location: Middle Tennessee
Member`s Gallery
Posts: 76
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Mine started leaking in the same area. The head gasket just deteriorated in that area after 20 years and 415k. It was just a leak to the outside. If I remember correctly, it wasn't even a blown head gasket. It just started leaking to the oustide. I imagine the hotter heat going out the exhaust side deteriorates the gasket quicker than the intake side. There is less iron on that side of the head as well, which 'may' be a contributor.
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05-09-2019, 05:33 PM
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#20
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Name: RAMblin Fever
Title: Green Behind the Ears
Status: Not Here
Join Date: Oct 2015
Location: Middle Tennessee
Member`s Gallery
Posts: 76
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So was it blown, or just deteriorated and leaking out the side?
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