LML with a blown motor

[Brshan01]

Thanks Adam and Phinney for the information. At this point the intent is to leave everything alone apart from the engine, I'll still run the 10mm cp3, 40% injectors and s369. The shop doing the work said they will warranty their motor work at this power level for 2yrs, basically if anything they replace goes bad it will be covered but say the crank goes it won't be covered.

I'm still waiting for them to get the motor out and torn down, I'm basically just doing homework at this point so I can be a bit more educated when it comes time to start ordering parts.

So it sounds like the LML rods will cause fitment issues on any out of the box piston apart from a stock replacement? Say I order fingers Pistons and Carillo rods, they should fit up with no extra machining correct?

This is already getting expensive :roflmao:

 

[malibu795]

Sounds like bore and balance with rods be what your after.. about 7500.00 in parts and machines work.

Fingers pistons will work on everything but LML rods without machine work

 

[Benjamax]

Lml with race pipes or full race exhaust, a cp3 conversion for reliability, you could go larger while in there and maybe like 30% overs if you want, built tranny and tunes. You have a daily driver that is so reliable at 530hp


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[nick31]

Lml with race pipes or full race exhaust, a cp3 conversion for reliability, you could go larger while in there and maybe like 30% overs if you want, built tranny and tunes. You have a daily driver that is so reliable at 530hp


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Wat...? His trucks already built dude, hes rebuilding the motor...everything you said has already been done lol

 

[nick31]

Hopefully you can get yours ironed out, it sounds like it's kind of a bandage at this point (only working in tow/haul). Are you selling due to being frustrated? Lol

ya it's kinda dumb having to run it in tow haul to get the truck to drive nice, but onto the 3rd tcm revision and it's still the same so I just run it in T/H on the highway and I don't have much of an issue anymore. Not frustrated with the truck I want to start running hotshot and my truck just isn't capable of hauling big enough being a 2500 srw. Prob be another year before im ready but just gonna pickup a stock dually once my truck sells and start getting the ball rolling

 

[Brshan01]

Update...

I got a call from the shop today and they said I lost 4 Pistons all on one side, weird? Anyway, they said the block looks like it's fine and should be able to re-hone and run std bore pistons. Pic attached of the one of the 4 failed pistons I stole from Jags facebook, Josh said they all looked about the same. Also said they had never seen anything like it and still working with other builders to determine a cause.

I asked about all the parts I was thinking about throwing at it and he said I should be able to get by a lot cheaper.

Right now it sounds like...
Billet rods - probably carrillo
Mahle race casts or possibly Carrillo pistons
Arp main studs already have head studs
Upgraded bearings
Key the stock crank
Welded water pump
Valve spring kit
Possibly new cam not sure about AF or standard order
New oil pump
ATI damper and balance crank
Billet flywheel

Im waiting for a full parts list and pricing, asked them to basically spec it out how they would do it if it was a personal truck and we will modify the list from there.

 

[malibu795]

Im about to put this cam in my hotshot. Oem drop in. As in dont need bigger springs/pushrods/cut pistons.
http://www.hamiltoncams.com/196200109lsa.html
We shall see how it does

 

[Brshan01]

Im about to put this cam in my hotshot. Oem drop in. As in dont need bigger springs/pushrods/cut pistons.
http://www.hamiltoncams.com/196200109lsa.html
We shall see how it does

That price is pretty appealing and it sounds like it might be a good choice for the turbo I'm running based off their description. Thanks for the link :thumb:

 

[830king]

Update...

I got a call from the shop today and they said I lost 4 Pistons all on one side, weird? Anyway, they said the block looks like it's fine and should be able to re-hone and run std bore pistons. Pic attached of the one of the 4 failed pistons I stole from Jags facebook, Josh said they all looked about the same. Also said they had never seen anything like it and still working with other builders to determine a cause.

I asked about all the parts I was thinking about throwing at it and he said I should be able to get by a lot cheaper.

Right now it sounds like...
Billet rods - probably carrillo
Mahle race casts or possibly Carrillo pistons
Arp main studs already have head studs
Upgraded bearings
Key the stock crank
Welded water pump
Valve spring kit
Possibly new cam not sure about AF or standard order
New oil pump
ATI damper and balance crank
Billet flywheel

Im waiting for a full parts list and pricing, asked them to basically spec it out how they would do it if it was a personal truck and we will modify the list from there.

Wow 4 on the same side, that's wierd. Hopefully Josh gets you up and running quick!....in for pics too

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[Chad006]

Update...

I got a call from the shop today and they said I lost 4 Pistons all on one side, weird? Anyway, they said the block looks like it's fine and should be able to re-hone and run std bore pistons. Pic attached of the one of the 4 failed pistons I stole from Jags facebook, Josh said they all looked about the same. Also said they had never seen anything like it and still working with other builders to determine a cause.

I asked about all the parts I was thinking about throwing at it and he said I should be able to get by a lot cheaper.

Right now it sounds like...
Billet rods - probably carrillo
Mahle race casts or possibly Carrillo pistons
Arp main studs already have head studs
Upgraded bearings
Key the stock crank
Welded water pump
Valve spring kit
Possibly new cam not sure about AF or standard order
New oil pump
ATI damper and balance crank
Billet flywheel

Im waiting for a full parts list and pricing, asked them to basically spec it out how they would do it if it was a personal truck and we will modify the list from there.

I would go fingers cast oval bowl Pistons without doubt just based on their track record, and one of marks pinned pumps rather than welded. I've read of a few failures on the welded ones haven't heard of the pinned one failing yet. Might want to do NDT's for block and crank if that's not part of the plan already. Other than that looks good to me should be a fun truck!

 

[Brshan01]

I would go fingers cast oval bowl Pistons without doubt just based on their track record, and one of marks pinned pumps rather than welded. I've read of a few failures on the welded ones haven't heard of the pinned one failing yet. Might want to do NDT's for block and crank if that's not part of the plan already. Other than that looks good to me should be a fun truck!

That was the route I was originally planning to go with pistons, the shop doing the work didn't rule out the fingers pistons but said they had no experience using them and some concerns with the bowl design on an LML injector. I'm going to ask him to make a phone call before ruling them out, in the end I want a warranty so if that means just running the race casts Mahle because they are comfortable with them I'll go that route. I ruled out the Carrillo Pistons after reading more.

The block and crank will be sent to the machine shop, the crank is going to get checked before they key it and I'm not sure what sort of testing they would do on the block but I'll ask about it befor it's sent out.

Water pump I asked about pinned vs welded and he said they weld them in house and never had issues. Ill ask again, I could tig it at home and feel pretty confident in the weld if the concern is a crap weld.

Feel like a zombie I've probably read 3000 posts on this forum since the motor went. Really hoping the motor is trouble free so I can have my life back in a month or so :roflmao:

Wow 4 on the same side, that's wierd. Hopefully Josh gets you up and running quick!....in for pics too

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I'm sure he will, they have been pretty good to me in the past.

 

[malibu795]

That price is pretty appealing and it sounds like it might be a good choice for the turbo I'm running based off their description. Thanks for the link :thumb:

Its currently going in my LMM with 17.5: ovals and a 4088 Garrett charger should be running next couple days

Hamilton seams to be go to for Cummins cams and alot of people like them...

Currently i have aplit to OEM
Pistons.. fingers oval replaced both sets.. will buy again with out thinking twice..
Got a 100k on a set currently. Those have been a rough miles

Fingers opinion on said set
http://www.duramaxdiesels.com/forum/showpost.php?p=1013567&postcount=710

 

[hondarider552]

I would rule out the mahle race casts too. Not much better than stockers and they Crack too.

 

[DAVe3283]

I would rule out the mahle race casts too. Not much better than stockers and they Crack too.

Isn't that what Fingers' oval bowl pistons start with?

My understanding is the oval bowl is stronger than the round bowl, so it is more resistant to cracking, but the Mahle seems pretty strong on its own.

I've been running the Mahle race cast for about 15k miles, but I'm "only" 660WHP.

 

[Brshan01]

Its currently going in my LMM with 17.5: ovals and a 4088 Garrett charger should be running next couple days

Hamilton seams to be go to for Cummins cams and alot of people like them...

Currently i have aplit to OEM
Pistons.. fingers oval replaced both sets.. will buy again with out thinking twice..
Got a 100k on a set currently. Those have been a rough miles

Fingers opinion on said set
http://www.duramaxdiesels.com/forum/showpost.php?p=1013567&postcount=710

Thanks for he feedback, it's nice to hear some of this stuff can last higher milage, that's what I'm aiming for.

I would rule out the mahle race casts too. Not much better than stockers and they Crack too.

Really? I've been trying my best to find any carnage information on the race casts but I'm coming up empty handed. I kinda want to run the fingers just to hear them :roflmao:

 

[nick31]

Thanks for he feedback, it's nice to hear some of this stuff can last higher milage, that's what I'm aiming for.



Really? I've been trying my best to find any carnage information on the race casts but I'm coming up empty handed. I kinda want to run the fingers just to hear them :roflmao:

They sound good, Matt on the other forum did ovals on his hotshot truck when he put a hole in a piston :thumb:

 

[slowlml]

Friend down here cracked a mahle race cast with a little over 800 hp. S472, 100 overs, dual lbz pumps, cracked 2 iirc. It was awhile ago. If they will warranty them definitely go with fingers. They're holding up in alot of 1000+ hp trucks. On the other hand my buddys 2.6 truck has been running mahle race cast for 2 or so seasons n is doing great.

 

[S Phinney]

The facts are that Mahle race cast and fingers are the same pistons but have a different bowl design. Race cast won't hold up under high hp builds. Fingers bowl design will hold up. It's a no brainer. If you go cast use Fingers design or don't do cast pistons. I have cracked a race cast myself. Granted I didn't have a problem when it had a single charger but when I went to triples they didn't last about 7000 miles. Their design is intended for 850 and under hp goals. Set your end goal first and buyouts with that in mind or you will regret it.

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[Brshan01]

Sounds like everyone is on the fingers bandwagon, he must be doing something right! I'm going to try to swing through to talk to my builder today and get the parts list buttoned up, I spoke to someone at SoCal yesterday afternoon to press them for information on all of my questions and some of their products, I have a pretty good idea of what I'm looking for now.

Power goals are probably between 7-800 on the hottest tune though I'm not chasing numbers anymore... Whatever my current 10mm cp3, 40 overs and s369 can net me is where it's going to live power wise. No intent to compound or change turbo setups unless we still can't figure out the transmission tuning but that will be absolute last resort.

What about Cams? I think I'd like to go with an AF cam, the guy I spoke with said the AF-6480 is probably where I should be looking. Just wondering if anyone might be able to expand a little on that and share their thoughts on whether or not that may be too aggressive for a DD with this fuel/air that still needs to tow.

 

[DAVe3283]

Having gone to a really aggressive cam myself, I would say keep your cam choice close to stock. You don't really gain a lot of top-end power with a big cam, but you lose a lot of spool and DD-ability with the big cam. The 6480 would be about as big as I would recommend, personally.

If I were to speculate on power, with the single S369, you should be mid-600HP with low/no smoke, and should be able to break 700 if you're willing to roll some coal. I did 660 HP with a tiny haze on my S371, but that was with ported heads. 40% over injectors should be plenty to do 700 HP as well. Should be a well-balanced package, from the sounds of it.