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06-30-2018, 03:08 AM
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#1
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Name: Fast12v
Title: Green Behind the Ears
Status: Not Here
Join Date: May 2018
Location: California
Member`s Gallery
Posts: 66
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Can’t keep my head down.
Had my head machined flat and the block was checked to make sure it was flat. Installed arp 425s and within 3 pulls on a back road at right under 70psi blew the head gasket. Got the gasket fixed and everything was checked for flatness along with 3 retourques and my boost turned down to 55psi and I now have another blown gasket within 1000miles. No leaking coolant but lots of bubbles in my overflow and tons of white foam in the oil. I really hate having to pull the head and flush all my fluids every 800 miles so I’m thinking arp 625s and find a place to put orings in the head should solve the problem. Any other ideas to help solve this problem? With 625s and orings be enough? Anyone know a place around east bay California that does orings? Thanks
__________________
1994 12v Cummins, s366sxe, 5x.018 PDD injectors, 188-220 Hamilton cam, 60lbs VS, Hamilton pushrods and tappets, Maxed 215 pump, Airdog165, NV4500 w/ dual disk south bend
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06-30-2018, 06:59 AM
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#2
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Name: jasonc
Title: Too Much Time
Status: Not Here
Join Date: Nov 2009
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Posts: 4,412
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Orings and your 425's will be fine.
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06-30-2018, 08:17 AM
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#3
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Name: Mark Nixon
Title: No Savior among the flesh
Status: Not Here
Join Date: Feb 2009
Location: Brownville, Nebraska
Member`s Gallery
Posts: 8,676
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Fast12valve, have you had it checked for cracks?
Mark.
__________________
If you or I did business like the PEOPLE in government do business, we'd be put in jail. Government is coercive.
Anarchy: The state of existence where there are no masters & no slaves. Therefore, Anarchy means the ABSENCE OF SLAVERY, or, in other words, FREEDOM.
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06-30-2018, 08:39 AM
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#4
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Name: 95cummins5.9
Title: Old man ***** gossiper
Status: Not Here
Join Date: Jun 2012
Location: U.S.A
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Posts: 4,720
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Oil cooler in good shape?
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06-30-2018, 11:51 AM
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#5
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Name: Fast12v
Title: Green Behind the Ears
Status: Not Here
Join Date: May 2018
Location: California
Member`s Gallery
Posts: 66
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Yes the head was checked for cracks when it was at the machine shop
__________________
1994 12v Cummins, s366sxe, 5x.018 PDD injectors, 188-220 Hamilton cam, 60lbs VS, Hamilton pushrods and tappets, Maxed 215 pump, Airdog165, NV4500 w/ dual disk south bend
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06-30-2018, 11:54 AM
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#6
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Name: Fast12v
Title: Green Behind the Ears
Status: Not Here
Join Date: May 2018
Location: California
Member`s Gallery
Posts: 66
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Quote:
Originally Posted by 95cummins5.9
Oil cooler in good shape?
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How do you test the oil cooler? I’m thinking it’s the head gasket because anytime I drive it hard the upper rad hose is hard and lots of bubbles in the overflow tank. If I unscrew the radiator cap there is a huge release of air too.
__________________
1994 12v Cummins, s366sxe, 5x.018 PDD injectors, 188-220 Hamilton cam, 60lbs VS, Hamilton pushrods and tappets, Maxed 215 pump, Airdog165, NV4500 w/ dual disk south bend
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06-30-2018, 11:56 AM
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#7
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Name: Fast12v
Title: Green Behind the Ears
Status: Not Here
Join Date: May 2018
Location: California
Member`s Gallery
Posts: 66
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Quote:
Originally Posted by jasonc
Orings and your 425's will be fine.
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This will be the 2rd time they will be taken out and then reinstalled. Are they still good after being taken out and reused?
__________________
1994 12v Cummins, s366sxe, 5x.018 PDD injectors, 188-220 Hamilton cam, 60lbs VS, Hamilton pushrods and tappets, Maxed 215 pump, Airdog165, NV4500 w/ dual disk south bend
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06-30-2018, 12:00 PM
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#8
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Name: jasonc
Title: Too Much Time
Status: Not Here
Join Date: Nov 2009
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Posts: 4,412
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Should be fine, try to get around 140lbs out of them. Get up to 125 and then slowly bump them 5lbs at a time with a good brake in between. Then heat cycle the engine a couple of times and retorque. Remember to reset your valve lash after you retorque, especially if the studs moved any.
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06-30-2018, 01:42 PM
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#9
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Name: Fast12v
Title: Green Behind the Ears
Status: Not Here
Join Date: May 2018
Location: California
Member`s Gallery
Posts: 66
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Ok sweet. I’ll look for a place to oring the head and then give it a shot. Thanks
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06-30-2018, 01:51 PM
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#10
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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: 4,720
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Quote:
Originally Posted by Fast12v
How do you test the oil cooler? I’m thinking it’s the head gasket because anytime I drive it hard the upper rad hose is hard and lots of bubbles in the overflow tank. If I unscrew the radiator cap there is a huge release of air too.
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Can you see on the old gaskets where the bad spot is?
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06-30-2018, 05:11 PM
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#11
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Name: Muddin_dude06
Title: ...
Status: Not Here
Join Date: Sep 2007
Location: Chandler OK
Member`s Gallery
Posts: 2,541
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If you o-ring or Fire ring it you shouldn’t have any more issues. But I actually would not suggest torquing the studs past what arp calls for
__________________
'96 2500 4x4 5sp. 3” Full Long arm lift w/35's
ValAir DD Clutch w/ Input
DFI 5x.012’s, O-ringed, 625’s
Hamilton 178/208, pushrods, PDD street springs, S362sxe/.7WG
‘12 LML crew cab swb 4x4 RC 3.5” lift with 33’s
Anarchy tune
5” exhaust w/ Jones 5050XL
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06-30-2018, 05:54 PM
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#12
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Name: Fast12v
Title: Green Behind the Ears
Status: Not Here
Join Date: May 2018
Location: California
Member`s Gallery
Posts: 66
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Quote:
Originally Posted by 95cummins5.9
Can you see on the old gaskets where the bad spot is?
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First time the gasket didn’t look like it was messed up at all but coolant was pouring out of the side of the engine. This 2nd time no coolant is leaking but I have coolant in oil and oil in coolant and the radiator hose gets super hard with lots of bubbles and pressure in the cooling system. I don’t think the problem is the gaskets being bad. Just that the head keeps lifting enough to let exhaust out of the cylinders.
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06-30-2018, 05:56 PM
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#13
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Name: Fast12v
Title: Green Behind the Ears
Status: Not Here
Join Date: May 2018
Location: California
Member`s Gallery
Posts: 66
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Quote:
Originally Posted by Muddin_dude06
If you o-ring or Fire ring it you shouldn’t have any more issues. But I actually would not suggest torquing the studs past what arp calls for
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Do you think the 425s will be enough or should I get the 625s so I can tighten it down more.
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06-30-2018, 06:12 PM
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#14
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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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Quote:
Originally Posted by Muddin_dude06
If you o-ring or Fire ring it you shouldn’t have any more issues. But I actually would not suggest torquing the studs past what arp calls for
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I've taken stock bolts to 140'ish, by going slow and taking my time. I'm all about money better spent elsewhere, 625's are expensive. All your after is crushing that o-ring and sealing off the rest.
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06-30-2018, 09:20 PM
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#15
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Name: mhuggler
Title: One piece at a time
Status: Not Here
Join Date: Sep 2007
Location: Uno, Pa.
Member`s Gallery
Posts: 1,523
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Quote:
Originally Posted by jasonc
Should be fine, try to get around 140lbs out of them. Get up to 125 and then slowly bump them 5lbs at a time with a good brake in between. Then heat cycle the engine a couple of times and retorque. Remember to reset your valve lash after you retorque, especially if the studs moved any.
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^This. Also, I've found that things as simple as what type/brand thread lubricant used can make a huge difference in actual clamping force ending up on the head. Don't cheap out! (Like I did....once).
__________________
2002 2500 4x4 ETH/DEE-F1 Mach 5's/62/65/12/Smarty/ATS Ex.manifold/AFE intake/TST Comp./.020 marine gasket/o-ringed/ARP studs/5"stacks/Airdog 150/Isspro guages/Southbend 3600 DD/3.54 gears/leveling kit/Bilstein 5100frt,5150rr/37" BFG A/T's on 18" Eagle 114's/Borgeson SS/DSS
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06-30-2018, 09:27 PM
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#16
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Name: 95cummins5.9
Title: Old man ***** gossiper
Status: Not Here
Join Date: Jun 2012
Location: U.S.A
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Posts: 4,720
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Arp stud lube! You can take stockers to 150 with some patience. Im with jason, 425s torque to 140-145 with ease. A hot retorque always gives me almost a quarter turn on 425s. Orings, try some copper spray too.
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07-01-2018, 04:36 PM
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#17
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Name: jedeka
Title: Too Much Time
Status: Not Here
Join Date: Oct 2009
Location: Boone, Iowa
Member`s Gallery
Posts: 1,413
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I had 425 studs and fire rings in my 12v pulling truck. With 55 psi of boost, I could lift the head. When I rebuilt the engine, I switched to 625 studs. Expensive, yes, but I haven’t had an issue yet. I will check torque on the studs before I run the valves. So far, so good.
__________________
1996 Dodge Ram 2500 4x4, 5 spd. 4.88 gears, 2.5" turbo, Smokem inj, 5000 rpm springs, NV271, South Bend dd clutch, 33x12.50-15 STS tires, 6 inch stack, custom valve springs
2005 3500 4x4 dually, auto, KORE leveling coils, 19.5 wheels, Smarty Jr
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07-01-2018, 04:41 PM
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#18
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Name: gwhammy
Title: Too Much Time
Status: Not Here
Join Date: Sep 2006
Location: Missouri
Member`s Gallery
Posts: 2,201
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What kind of timing are you running?
__________________
95,twd,rc,sb,351-ht60 twins,160modded, 09 f350 12 valve,
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07-01-2018, 10:01 PM
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#19
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Name: Fast12v
Title: Green Behind the Ears
Status: Not Here
Join Date: May 2018
Location: California
Member`s Gallery
Posts: 66
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Quote:
Originally Posted by gwhammy
What kind of timing are you running?
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21° of timing.
__________________
1994 12v Cummins, s366sxe, 5x.018 PDD injectors, 188-220 Hamilton cam, 60lbs VS, Hamilton pushrods and tappets, Maxed 215 pump, Airdog165, NV4500 w/ dual disk south bend
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07-02-2018, 07:56 PM
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#20
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Name: Fast12v
Title: Green Behind the Ears
Status: Not Here
Join Date: May 2018
Location: California
Member`s Gallery
Posts: 66
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Can’t find any shops around me to cut orings. Thinking about buying that isky oring t cutting tool and just cut the grooves in my block myself. Has anyone ever used this or any reasons why I shouldn’t do this?
__________________
1994 12v Cummins, s366sxe, 5x.018 PDD injectors, 188-220 Hamilton cam, 60lbs VS, Hamilton pushrods and tappets, Maxed 215 pump, Airdog165, NV4500 w/ dual disk south bend
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