Mack Technician
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Posts posted by Mack Technician
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Third, get rid of restrictor S300 turbo and replace with a breathable S400. Don't try to hog the S300 out to fit the breather manifold openings, doesn't work. There is not enough meat, they undersized the AI turbo casting.
Left side non-AI Right side Stock AI
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AI restrictor left E7-Etech right
Mounting height/depth/angle/position of turbo is perfectly matched, no adjustments needed.
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"As a dog returns to its vomit, so fools repeat their folly."
Proverbs 26:11
High Priority...............need to stop the Dog from eating it's vomit. The Camshaft bump is responsible for sucking back filthy, uncooled, exhaust gas causing high soot return and poor burn.
The restrictor Manifold, 4" undersized exhaust pipe and restrictor turbo are all responsible for the back pressure needed to feed the 0.075" exhaust bump.
Pre-AI manifold left, AI restrictor manifold right.
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Second, I did a sweep of the local Mack graveyards and found the fore-mentioned breather manifold (pre AI/AMI/AC) up at Scott's Northwood's Diesel, paid the man at the door $200, stripped it, bead blasted it to check for cracks and gave it an oil rub down. Perfect condition.
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On 6/21/2017 at 9:48 PM, nelm1994 said:
Well its good to see you back. I was starting to think we were getting censored by some greeney . What year truck was the exhaust manifold from and what model.
NELM! The only Greeney was the "green-horn" who didn't realize delete means everything!
Mine was 2002 CH613. My old cohorts at the Truck Center said they grabbed manifolds all the way back to PLN..... Just watch out for CL chassis with E7 manifold which tilts upward.
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First $250 we spent was having the last, latest, data file uploaded to VECU at the Dealership. That was the cheapest, instant, improvement we saw. LDog still had the original data file and a major drive ability issue. Occasionally, during acceleration, the truck would feel like someone was clamping the fuel line for 3 seconds and releasing it. I could never recreate the issue consistently, on demand, through some particular driving/accelerating pattern.
My buddy had a bread bag show up in his 1998 CH fuel tank once (previous owner actually used a bread bag to seal threads on a mis-fitting fuel tank cap because he was too cheap to buy the cap that fit). We changed the cap when he bought it, but by then a bag chunk was in the tank. That created the exact effect of Log Dogs software issue.
Step 12b VECU software upload, problem gone.
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We weighed options and decided to try to cripple the Camshaft recirculation bump by reducing back pressure rather than installing a pre AI-CCRS camshaft. A pre-AI CCRS camshaft without a bump was $1980 and a complete kit was $3500, parts only. Keeping in mind Mack will let you reuse ceramic rollers on new camshaft. Kit includes everything..... including new spring loaded push tubes.
I’m adding a note upfront, you do not need to change your camshaft to achieve performance upgrades. Had people stop reading because the assumption was they need a complete camshaft. 12-22-18.
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Downloaded Log (attached) revealed Loggin Dog had been drinking excessively for years..........
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AMI is the group of Three Maxidyne engines that all have a 60% torque rise.
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New truck Loggin Dog couldn't tear his way out of a wet paper bag below 1,200 RPM's. My buddy was panic shifting at intersections, revving way too high for shift points and was 'Quick-Sticking' for a gear hole. Having come out a 1998 PLN 427, to this new high level of dissatisfaction, we made the choice to dig in.
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The Issue......
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Retired Gernatt aggregate hauler from upstate New York. 2005 Granite CV-713, AI460, T318L 18 Speed, 200 series 4.35 Mack differential, 10MM single frame, 215" wheel base.
After watching his brother suffer through DPF and SCR my buddy wanted a mid 2000's Mack Truck with no external emissions system in spite of potential low hole torque issues. He planned on 10,000 miles a year and couldn't justify maintaining an over-stuffed emission system.
Gernatt pulled 107K, buddy was going to be pulling 90-100K loads hauling Feller-buncher, skidder and hot saw on tri axle low-boy.
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First I'd like to send a note to any other clueless BMT newbies..... NEVER click the delete at the bottom of your "New Topic" page "moderation action" unless you want to lose all three pages of your post. I'm dedicating this second post series to all truck owners who regretted buying an AI Granite and as a memorial for all the awesome tips from NELM and MACKPRO that I cast into eternal cyber damnation.
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Wow, nasty, looks like the Iraqi Army's "Highway of Death" during the Kuwait retreat....
Start a BigMackTrucks.com Co-op?
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On 6/12/2017 at 10:57 PM, RowdyRebel said:
Golf carts don't do well in crashes...
Looks like no matter what the circumstance your neck is getting snapped.
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I think I can finish the argument concerning ACA.........
“Lack of transparency is a huge political advantage. And basically, call it the stupidity of the American voter or whatever, but basically that was really, really critical for the thing to pass. … Look, I wish … we could make it all transparent, but I’d rather have this law than not.” Jonathon Gruber- Technical Architect of ACA
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3 hours ago, Outbehindthebarn said:
No, I don't think so. They thought enough of her influence to fire her for pulling that stunt.
I'm not getting pulled into THIS choke-fest..........but darnit son, those impromptu, make-up free, snap shots of her were scarier than the stupid severed head. A person should never be allowed to see the radio disk jockey, your always disappointed.
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On 4/29/2017 at 7:02 PM, TeamsterGrrrl said:
Most Social Workers work in government, and because the job generally requires at least a 4 year degree, they're well paid. Back in the 90s before Minnesota upped the prerequisites for licensure I could have gotten grandfathered in based on my having a 4 year degree with some social work and psych courses and experience working in social service agencies, and my social worker friends tried to talk me into it. Probably would have paid about the same as the Postal Service and similar benfits, so didn't make much difference that I stayed in trucking.
If you ever get stung by trucking you sound like you'd make one helluva bartender. Everybody needs a shrink.
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You sound like an involved owner (and/or) operator. I hate to sound critical and I don't know how they do it in Africa, but up here.......if I rebuild your engine it better damn well last through the warranty period or I'm buying you a new motor. The shop supervisor is devastated, not the customer. It is the mechanics liability to oversee the complete engine repair, confirm all tolerances and flag all components that have potential for a premature failure or have stepped outside service specs. I say fire the crew and "start again Finnegan".
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Looks to me like you just, plain, lost oil.... everything got hit.
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Mack AI460 AI427 AMI low torque low horsepower poor fuel mileage granite , dead dog , remediation
in Engine and Transmission
Posted · Edited by Mack Technician
No need for explanation...... Injection/Turbo shop guy, Mike, did explain that the 30 gallon recyclable aluminum(in the background) was predominantly S300's. He showed us the internal bearing difference and sold my buddy. For this AI460 and K&S injectors we went with a 631GC5153M turbo(NOTE: only use this number on 427/460HP engine). $1,200 for the new turbo, no core.
P.S- In case your unconvinced I will be listing the S300 turbo for sale shortly. Priced to sell...
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