Chevyboy86's LMM Duramax

Chris · May 2, 2014

Don't worry I have a spare 5.3 sitting in the garage with 308k on it I can send to you lol

Sent while drinkin' a cold one...

He is getting that LQ9 when the 5.3 dies

Prokopchuk_9 · May 2, 2014

He is getting that LQ9 when the 5.3 dies

Maybe I should swap in an lq9 ✊✊✊✊

kstruckcountry · May 2, 2014

Haha something tells me that would cost even more for 1000hp. I've got my eye out for a low mile motor so I'll have one ready to go.

Prokopchuk_9 · May 2, 2014

Haha something tells me that would cost even more for 1000hp. I've got my eye out for a low mile motor so I'll have one ready to go.

Doubtful. Actually I know so

kstruckcountry · May 2, 2014

I would think the Dmax would go a lot longer between rebuilds though. For me, I'd be more than happy with 450hp or so.

Prokopchuk_9 · May 2, 2014

Little update. Injector balance rates are well within spec. Unplugged the two hoses goin into a "t" that dumps crank vapour too see which head the smoke is comin from and it's coming from both heads. Which rules out a cracked piston or bent rod [emoji106] so I changed my oil and cut open filter NO metal. Oil wasn't foamy or anything. Next step compression test and keep an eye on coolant level. Here's my balance rates. Pretty solid for running huge tunes and 130k miles.

Within +-4 is within GM spec

Prokopchuk_9 · May 3, 2014

Anybody have any suggestions?

kstruckcountry · May 3, 2014

No fuel in the oil? Was it burning much oil? You would think blow by would be easy to track down but coming off both sides??

Prokopchuk_9 · May 3, 2014

No fuel in the oil? Was it burning much oil? You would think blow by would be easy to track down but coming off both sides??

Nope not as of yet. The oil I changed out of it was at about 7-8k miles it was still perfectly on full line...I'm getting zero smoke at idle out the tail pipe, any throttle percentage for that matter. I just changed the oil though now, I made a little mark on the coolant reservoir so I don't forget. Gonna keep driving it for a bit and see what happens...

Still have good oil pressure, no smoke out tail pipe, runs fine, builds boost, inj balance rates are very acceptable, not burning oil...I don't think I'm losing coolant (yet) so screw it. Just gonna keep drivin it for now. Keep a close eye on things and vitals...

kstruckcountry · May 3, 2014

How much pressure is there in the coolant tank? I know it's a long shot but if the tank has lotso pressure when just started that could be bad...

Danthaman69 · May 3, 2014

Anybody have any suggestions?

Get On The Duramax Forum. Alot Of Experience Guys On There.

kstruckcountry · May 3, 2014

He is the experienced guy, lol

Danthaman69 · May 3, 2014

YesHe Is. Nothing Wrong Asking Someone With More Experience For Help To Get Him Out Of This Lil Problem. IM Sure Someone On The D-max Forum Has Had This Lil Hiccup.

Prokopchuk_9 · May 3, 2014

YesHe Is. Nothing Wrong Asking Someone With More Experience For Help To Get Him Out Of This Lil Problem. IM Sure Someone On The D-max Forum Has Had This Lil Hiccup.

I'm active on DF and DD...guys are telling me get compression test. Some guys saying it's pretty much normal, most don't notice because it's normally routed into the Intake...not to atmosphere