blown head gasket ? - Competition Diesel.Com

Cummins12v · 04-29-2019, 02:51 PM

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

Crawler · 04-29-2019, 07:42 PM

If the gasket blew out without crossing the oil passages, then you won’t get a mix.

R1raptor · 04-29-2019, 08:58 PM

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.

bateman · 04-30-2019, 08:05 AM

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.

Rich dzl · 04-30-2019, 08:08 AM

How many times you checked the head studs in that time ?

Cummins12v · 04-30-2019, 01:53 PM

Quote:

Originally Posted by Rich dzl

How many times you checked the head studs in that time ?

Honestly I did one retorque a month after putting motor together... haven’t messed with them since.

Cummins12v · 04-30-2019, 01:59 PM

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.

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

bateman · 04-30-2019, 02:13 PM

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?

95cummins5.9 · 04-30-2019, 06:44 PM

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.

Crawler · 04-30-2019, 09:38 PM

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.

Cummins12v · 04-30-2019, 09:55 PM

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?

yeah mine is similar. im just going to replace the gasket this will drive me nuts. you should do the same its super easy

jasonc · 05-01-2019, 06:25 AM

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.

Mudn_1 · 05-01-2019, 08:22 AM

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.

This^^^I drove one for a while and pitted the hell out of the block and head.

*Snedge* · 05-01-2019, 08:30 AM

Fix it.

bateman · 05-01-2019, 09:15 AM

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.

*Snedge* · 05-01-2019, 12:53 PM

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.

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.

bateman · 05-01-2019, 01:10 PM

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.

Cummins12v · 05-03-2019, 11:57 AM

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.

It stops leaking once it warms up. If I get rained out I’ll fix it tomorrow and post some pictures.

RAMblin Fever · 05-06-2019, 12:44 PM

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.

RAMblin Fever · 05-09-2019, 05:33 PM

So was it blown, or just deteriorated and leaking out the side?

04-29-2019, 02:51 PM	#1
Cummins12v Name: Cummins12v Title: Diesel Enthusiast Status: Not Here Join Date: Nov 2007 Location: Texas Member`s Gallery Posts: 108	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 __________________ 96 dually....money pit 2007 dually work... also money pit

04-29-2019, 07:42 PM	#2
Crawler Name: Crawler Title: Press the BIG RED button. Status: Not Here Join Date: Apr 2006 Location: NE Texas Member`s Gallery Posts: 837	If the gasket blew out without crossing the oil passages, then you won’t get a mix. __________________ EIKON Diesel-Where Diesels Become ICONS 95 Dodge-1500 Back Half 4-link 12V 2020 Duramax 2500 HPTuners 2015 Duramax 2500 EFI Live 2017 Powerstroke 3500 EZ Lynk

04-30-2019, 09:38 PM	#10
Crawler Name: Crawler Title: Press the BIG RED button. Status: Not Here Join Date: Apr 2006 Location: NE Texas Member`s Gallery Posts: 837	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. __________________ EIKON Diesel-Where Diesels Become ICONS 95 Dodge-1500 Back Half 4-link 12V 2020 Duramax 2500 HPTuners 2015 Duramax 2500 EFI Live 2017 Powerstroke 3500 EZ Lynk

04-29-2019, 08:58 PM	#3
R1raptor Name: R1raptor Title: Diesel Enthusiast Status: Not Here Join Date: Nov 2011 Location: North florida Member`s Gallery Posts: 127	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. __________________ 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.

04-30-2019, 08:05 AM	#4
bateman Name: bateman Title: Too Much Time Status: Not Here Join Date: Feb 2019 Location: Alabama Member`s Gallery Posts: 2,672	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.

04-30-2019, 08:08 AM	#5
Rich dzl Name: Rich dzl Title: 12v guru Status: Not Here Join Date: Mar 2011 Member`s Gallery Posts: 741	How many times you checked the head studs in that time ?

04-30-2019, 02:13 PM	#8
bateman Name: bateman Title: Too Much Time Status: Not Here Join Date: Feb 2019 Location: Alabama Member`s Gallery Posts: 2,672	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?

05-01-2019, 06:25 AM	#12
jasonc Name: jasonc Title: Too Much Time Status: Not Here Join Date: Nov 2009 Member`s Gallery Posts: 4,412	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.

05-01-2019, 08:30 AM	#14
Snedge Name: Snedge Title: Comp Diesel Sponsor Status: Not Here Join Date: Sep 2006 Location: Western Pa. Member`s Gallery Posts: 18,858	Fix it.

05-01-2019, 09:15 AM	#15
bateman Name: bateman Title: Too Much Time Status: Not Here Join Date: Feb 2019 Location: Alabama Member`s Gallery Posts: 2,672	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.

05-01-2019, 01:10 PM	#17
bateman Name: bateman Title: Too Much Time Status: Not Here Join Date: Feb 2019 Location: Alabama Member`s Gallery Posts: 2,672	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.

05-06-2019, 12:44 PM	#19
RAMblin Fever Name: RAMblin Fever Title: Green Behind the Ears Status: Not Here Join Date: Oct 2015 Location: Middle Tennessee Member`s Gallery Posts: 76	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.

05-09-2019, 05:33 PM	#20
RAMblin Fever Name: RAMblin Fever Title: Green Behind the Ears Status: Not Here Join Date: Oct 2015 Location: Middle Tennessee Member`s Gallery Posts: 76	So was it blown, or just deteriorated and leaking out the side?