Underdog

I took the elbow out of the intake manifold and put a plug in its place. I got a fitting called a THROUGH NIPPLE to mount in the intake pipe, then put the original elbow fitting into that. I left the metal pipe around back of the engine and routed a stiff hose from it up to my new fitting. This setup has been working well for several years. She might pump a little slower from 0 PSI but at speed there is no difference. Now it is all air and very little oil !

Happy Thanks giving to all! Hopefully all the road dogs made it home safe & sound! Hope each and every one can spend your holiday as you choose and with those you care about most.

I think these guys are on the right track with the compressor intake pipe. I ran my 427 for a time and could hear turbo boost leaking out through the air dryer!!! Listen closely when you are in a pull; it will only do this when the compressor is NOT pumping. When the unloader valves close(pumping air), no turbo leak. The boys at the Mack garage thought me to be crazy, and the foreman said it wouldn't matter much anyway. Boy were they WRONG! I did a little research and found various E-Tech engines with the compressor intake plumbed into the inlet side of the turbo(between the filter and turbo). There doesn't seem to be a method here; I have seen different models hooked up both ways.(yours might already be plumbed this way) I converted mine to a low pressure intake like I described and gained an instant 7 PSI on the boost guage. An added bonus is my compressor quit pushing so much oil; I don't think air compressors are designed for 30 PSI on the inlet side. Atmospheric will do fine. If you want to switch yours, just make sure you use stiff enough hose that it doesn't collapse under the suction of the intake. (air brake hose works good, soft enough to put a hose clamp on. Heater hose is not stiff enough.) Hope I was of some help. I know it is frustrating when your DOG ain't running right. Good luck!

Glad to have you aboard, macktruckfan. The more the merrier. Don't lo-ball your lack of experience, I'm sure you have much to offer. The topics vary widely and you must Know something about something, right? We each are special in our own way. At least that's what Mom used to tell me. Hmmm. I wonder why I don't get those pep talks anymore....

I try to avoid the PA Pike as much as possible on matters of principle. If I have time I will run east across 22 or I-68 (westbound I usually have a placarded load, so I can't run the turnpike anyhow. No HAZMAT thru the tunnels). The powers that be have it figured pretty close so you can either pay the toll or burn more fuel to go around. Out of pocket is about the same. Right now it costs me 31 cents per mile for class 7 (gross weight 80,000 lbs.) and that is set to increase first of the year. It will be interesting to watch the result of that, what with fuel prices dropping. Other Dog, you might just be seeing Underdog down on I-68 more often. BTW, the Ohio pike is a relative bargain @ 14 cents per mile. The bottom line is what counts, as long as you are makin' more than you are spendin'

Sorry, Rob for not posting more often, but after the drubbing I took in the Primary elections, I thought it best to ride off and not be seen nor heard from again. However if my public demands it, I will formally declare my intention to form an exploratory commitee in order to determine the viability of tossing my hat in the ring to seek my party's nomination for president. The 2012 election cycle should be gearing up in a few weeks on CNN and FOX. Campaigning does take a lot of time and money, though. Doesn't leave much of either for restoring F-models. The worst part of embarking on a political career path is that all my good ideas and answers to problems would have to be checked at the gates of bureaucracy.

If you read the linked article it sounds pretty reasonable what the Ohio Turnpike wants to do. They learned the hard way a few years ago that arbitrary toll increases leads to lower revenue, due to decreased traffic volumes. I am looking forward to using my E Z Pass in Ohio. It's worth the price of admission just to set the cruise at 65 in SLOHIO and run the toll road. New York and Pennsylvania should learn a lesson from Ohio and quit jacking the tolls out of sight. FYI, PA. Pike is set to increase tolls AGAIN in January '09.

Thanks everyone for the kind words. I'm looking forward to getting the F model in top shape, maybe even make some money with that one, too! BTW Bulldog Man, maybe you can explain to me WHY spread axle dumps are so rare in the southern states. I know you sacrifice tare weight, but spreads are pretty much standard north of the Mason-Dixon.

I got real excited about this truck. I have always liked F models, there were tons around when I was a kid! As you know most rotted away to nothing over the years. As a mechanic it always impresses me to find a truck that has been taken care of the way it should be. This one has an END673 @ 187 horsepower with a Duplex and 4.25 rear axle. I opened it up on the way home; she's good for 63mph!

I am proud to announce the arrival of a new old pup in Underdog's yard.(pictures are posted in my gallery) I heard about this truck at Gearhart's 2008 show in Lititz,PA. It is a 1963 F607T sleeper in what I say to be excellent original condition. This truck was not at the show, but an aquaintance mentioned a really clean F model was at a dealer near Port Jervis,NY , about 60 miles from my home. I could not wait to see it so I put off work Monday 10/6 and hopped on my motorcycle for a chilly morning ride. I was at the dealer's lot before he opened at 8a.m. The most intriguing thing about this truck is the recent fuel tax decals indicating that it was in operation as late as 2006! Not bad for a 45 year young Bulldog! To find an F model with little to no RUST is amazing as well. Some kind-hearted owner had certainly taken good care over the years. Other than kingpins, this truck will pass state inspection, so that morning I paid the man, and returned on Saturday 10/11 to DRIVE her home. Keep an eye on my gallery for updates and my F model and I will see you at Macungie 2009!!!

Rob how did you guess? I have been out for weeks soliciting campaign donations but have not achieved any level of what you would call success. So at this time I must regretfully suspend my run. It seems the current financial meltdown requires my full attention, since I did return home with less cash than before. But it's just the cutest little pup, and he just followed me home...

Great show indeed. This was my first time to Gearhart's, but I will definitely be back.

B613T thanks for the welcome. Do you have any Photos posted of your truck? I am looking at a 1964 B615 to buy and am curious to see anything similar.

Sweet Polly Purebred suits her well and she has taken it as her own. My handle UNDERDOG came not from the cartoon(although it was one of my favorites) but from my first truck. She was a special needs bulldog and I spent much time "UNDER that DOG" as Polly used to say. I won't say she LOVES the new truck, but is much more tolerant...

Can't you see how busy I am??? I don't see Obamadog(wassup dogg)coming over to help me polish! Oh well, somebody said polishing a Mack was like putting lipstick on a pig anyway!!! Thanks Rob for giving MY wife the CB handle she always wanted(Sweet Polly Purebred). Why didn't I think of that?

Thank you all for the kind welcome however I must respectfully decline your nomination for president, as I am currently busy at my current post as chief, cook, bottle washer and tank polisher !!!