Mack Technician

Pretty sure Granite has the same screen.

If you want the files get your e-mail to me and I will send them. Office Depot will make a 2'X3' for $20 on good paper. Perfect resolution. Amazon has cheap, but pretty good, poster frames for $12.

I couldn't sell them, I got the files from Dan for free. Unfortunately they are too big to upload. About 3X too big.

I got hold of Dan Roettger, from the Twin Cities. He made the early 90's mack poster series. Dan offered his high res files of the posters so I could make some 2' X 3' posters as gifts. They are too big to post. I have some smaller files. Had a very interesting dialogue about the series.

In case you don't have an OEM ream Otis makes a brush for cleaning M4 and M16 that fits the injector shadow well. I did bend the bristles as far forward as possible to try to get some shoulder strike, otherwise they do nothing to clean the fire ring receiver. You can't get the ramrod into #6 hole, so you have to cut it or punt.

Ahhhh, sweet nostalgia..... I still remember my first 237 experience. In the Impala, Mom and Dad both chain smoking, behind a DM with it's warranty tamperproof screws missing from the puff limiter.

Can't pick a fight with China...when we go to beat our plow shares into swords we'll realize we sold all our metal to China for cheap tricycles.

After the fact... we appealed to have a pyrometer port as standard to the new custom part description. The picture in the Grand Rock book didn't show a 4" with pyro port. I had my parts guy at the dealership interpret that dimension off stock parts and get back to Joshua. From my conversation it will be top radius center of first bend south out of turbo. I asked Joshua for an exact dimension stack muffler with 5" in and 5" out to be included in quote. No straight pipes in our neighborhood. As of 6-23-2017 I have not received a quote for the custom parts. Doing follow-up Email first week of July. I will need to know exact location dimensions if you want a pyrometer port installed. Grand Rock Company Joshua Stewart | Tech Support | Warranty | Returns 395 Fountain Ave. Painesville, OH, 44077 Ph: 440.639.2000 Ext: 115| Fax: 440.639.2010 TF: 1-800-321-3674 www.grpipes.com | joshuas@grandrock.com

Fifth, get yourself a 5" exhaust system. I called Grand Rock and asked if they would build a 5" exhaust out of the jigs used to make the replacement 4" exhaust. Many calls later and negotiating through my Mack Dealership......... Good morning Jason, I did hear back from our engineering department. It is feasible for Grand Rock to build all 5” versions of the pipes you requested. There will need to be weld seams in both of the pipes you’re requesting, and have a GR level 4 difficulty. This means a minimum of 2 week production time will be needed once the order is placed. These are NOT stocked items, and will be Made To Order. Please advise your local Grand Rock dealer of this, as there will need to be custom part numbers created. If you have any further questions, please feel free to contact us. Have a great day, and thank you for choosing Grand Rock for your exhaust solution needs. Grand Rock Company Joshua Stewart | Tech Support | Warranty | Returns 395 Fountain Ave. Painesville, OH, 44077 Ph: 440.639.2000 Ext: 115| Fax: 440.639.2010 TF: 1-800-321-3674 www.grpipes.com | joshuas@grandrock.com

Thanks, I wish we had solid numbers too. Opinions are soft evidence. We have one truck dyno down in Wausau at the Cummins dealership, but generally very thin pickings around here. Correction, made some calls, only one dyno left in Edgar, WI. $375 for the run-in. Doubt I could get the boss to pay that money to test a well-running truck.

Fourth, get a set of over-size injectors. I used K & S fuel injection of Wausau, WI. They have a reputation for doing well on Mack stuff and keep cores so you can swap out at the counter for your new Injectors. No turning them in and wait. Mike requires the Mack part number of the OEM injector for the specific truck, then he refits the tips accordingly. I told my buddy, before buying any specific truck, that we would play a bunch with AI427, but not as much with AI460. I feel increasingly bold about pushing more torque into the crank of this underpowered 460. The 1999 E-Tech 460XT was actually building 487 horsepower, but listing as 460. The block can take it.....460XT was putting out 1,760 Ftlbs of torque at 1,200 RPM. The stock AI460 is putting out 1,250 Ftlbs at 1,200 RPM. Mike puts the injector life span at 5,000 hours before they lose performance. He says the CCRS is tough on injectors. Double hits per injection cycle. $85 per injector including soft parts kit, pretty affordable performance. The injectors will add smoke on the take off, but clean up/spool up fast. I attached a video. Loggin Dog.3gp

Mike did try to do some housing swapping to check feasibility of swapping larger housings onto AI Turbo. It was a fail.

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....

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

AI restrictions.....

AI restrictor left E7-Etech right Mounting height/depth/angle/position of turbo is perfectly matched, no adjustments needed.

"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.

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.

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.

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.

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. 31 Cam lobe profile.pdf 31 percentages.pdf 31 wavelength.pdf 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.

Downloaded Log (attached) revealed Loggin Dog had been drinking excessively for years.......... 30 log.pdf