Duramax Diesels Forum Truck of the Week
  #31  
Old 05-04-2018, 09:10 AM
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Go down to Larry's Engine and Marine in Tucson. Larry machines all the engines i do. its a drive but he wont bull shit you and knows what those heads need to be fixed properly. Ive seen way too many shops in phx badger duramax stuff or take 5 times as long as they should on a parts.
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  #32  
Old 05-04-2018, 12:51 PM
Diesel Joe Diesel Joe is offline
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Thanks James, appreciate that.
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  #33  
Old 05-04-2018, 01:06 PM
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Well I’ll be damned, I wasn’t the only one this happened to
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  #34  
Old 05-04-2018, 02:49 PM
Diesel Joe Diesel Joe is offline
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Originally Posted by zakkb787 View Post
Well Iíll be damned, I wasnít the only one this happened to

But the question remains, WHY. I set all valves to .012, I have read where many set there's to .010. I checked the lifter thinking maybe the roller got egg shaped somehow, looks perfect. Oh well, guess at 350k it probably was time for head work and gaskets anyway. Just hope it doesnt happen again.
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  #35  
Old 05-04-2018, 05:33 PM
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Same thing with mine. Freak thing. Went together perfect. But pulled apart and push rod was bent bad. Valves stamped into the piston. But no cracks and valves weren’t bent either.
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Without a duramax... hopefully not for long.

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2011 Yamaha YFZ450X
2003 Yamaha YZ250
2003 Kawasaki Z1000
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  #36  
Old 05-04-2018, 08:29 PM
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Quote:
Originally Posted by Diesel Joe View Post
But the question remains, WHY. I set all valves to .012, I have read where many set there's to .010. I checked the lifter thinking maybe the roller got egg shaped somehow, looks perfect. Oh well, guess at 350k it probably was time for head work and gaskets anyway. Just hope it doesnt happen again.
Just currious which method did you use to set the valves? I always use the ICEO method. Intake closing and exhaust opening. (Set exhaust whenintake just starts to close and set intake when exhaust just starts to open) And I start with one and work my way down the bank. We did this on all our 14:1 race motors and never had an issue. Someone correct me if I'm wrong but should work on a diesel the same. I've seen some methods where they set 2 or 3 at the same time with out rotation of motor. Works for many but I never liked it. Using the ICEO method and doing one at a time you know your on the bottom of the cam lobe. Sorry to here about your motor.

Also would look at the adjusters when done and make sure the same number of threads was sticking up each. Just to see if one looked funny.
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  #37  
Old 05-05-2018, 09:55 AM
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I wouldn't trust that method 100% because of possible valve overlap. If you run stock firing order, print out merchant automotive's cheat sheet in color. It tells you which valves you can set on just two revolutions. On a AF engine I use a piece of stiff wire down thru the injector bore to keep track of tdc on the compression stroke and set each cylinder one at a time.

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  #38  
Old 05-05-2018, 09:57 AM
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https://www.merchant-automotive.com/...x#productTabs1

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Thanks to Blackout Performance

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