| Author |
Message |
jay (162.40.69.53)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, July 13, 2004 - 12:35 pm: | |
I'm looking at converted coaches, trying to make a choice that won't cost me a bunch of money just after I buy one. A 4106 looks fairly good from the website photos, but the 8v71 has 200,000 miles on it. As a novice, that seems like a lot of miles. Owner says it takes about 3 qts. of oil per 1000 miles. Is a rebuild due? Asking price is $30,000. Best bet would be to check it out in person with a busnut to advise?
Thanks in advance for the input. |
TWO DOGS (63.185.64.9)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, July 13, 2004 - 1:13 pm: | |
I don't believe any of what he says...200,000 isn't even broken in yet,3 qt. is too much...you need an experienced person to look at it for you.. |
FAST FRED (4.245.212.96)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, July 13, 2004 - 1:36 pm: | |
200,000 is the milage Hound hoped for in one year. They had them rebuilt annually , even the low mile ones.
You can expect another trouble free 100,000 miles IF the engine was pulled out and completly rebuilt, not from tossing in an inframe.
Commercials I know seemed to get 350K out of a brand new engine , and 300K from complete rebuild, and about 250K from an inframe.
Remember these commercial miles are far easier than camper miles , as the engines dont mind hard , constant use but die internaly from lack of use .
FAST FRED |
Deacon (204.184.224.27)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, July 13, 2004 - 2:43 pm: | |
Jay,
Without a full description of the bus and its history there is no way to comment on the value. Now for the motor.
Comments above are mostly correct, 200,000 miles on a complete frame out rebuild is not bad. An inframe if needed is about half or less the cost of an out of frame. Basicly they pull the liners, install new rings, redo the head, install new lower bearings, test injectors and button it up....good for another 200,000 plus miles.
Now consider this, what oil is being used? The wrong oil can cause excess usage. Also, has he tried leaving the oil level low? Many motors will 'throw' oil if kept full to the line.
All things considered, a really good well built 4106 is worth the money. If you plan on only 10,000 miles or so a year then even if useing oil at the present rate I would opt to run it without an overhaul.
My opinion,
John |
John Rigby (65.112.227.94)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, July 13, 2004 - 3:38 pm: | |
Decon
Is milage or years reason to change out injectors. i.e. my 671 has only 50k approx miles in the past 12 years ( 7years it was stood out of a bus)Would it be wise now to consider a complete change out of injectors.
John |
Deacon (204.184.224.27)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, July 13, 2004 - 4:50 pm: | |
John, normally injectors are removed and spray tested when an overhaul is done unless you have a problem. If one is found bad and the rest spray test OK I would replace or rebuilt the bad one and go on. The reliabuilt injector is just an old injector rebuilt, quick and simple and not costly for older injectors such as the 71 series.
As many dealers are now eliminating older injectors from stock it might be a good idea to keep an eye on ebay for some to have on hand when the time comes to replace. Most sell at a very fair price rebuilt, around 15-25.00 and no core exchange.
Milage, unless extremely high should not be a factor in changeing them out, sorta like spark plugs in a gas engine, if they work their OK.
Just my opinion,
John |
Daris (209.67.181.129)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, July 14, 2004 - 1:00 pm: | |
Jay,
Definitely checking it out with an "experienced" busnut would be a good idea. Having a reputable diesel mechanic go over it would be an even better idea. It seems like the majority of sellers sugar coat the truth to make a sale. Some outright lie. Maintenance is not cheap when you're paying a mechanic to do it. Things like oil changes, air cleaner cleanings, repacking wheel bearings often get ignored and end up leading to problems down the road.
My 4106 looked fairly decent when I inspected and drove it. The "little" things always end up bigger when it came time to pay the repair bills. While I'm doing most of the conversion work myself, I don't have the room to do much mechanical work myself. I'm forced to use mechanics for most of it. I quit adding up how much I'm spending. I like my rig, and enjoy using it.
Bottom line.... I've spent a bundle on my reasonably priced 30something year old shell. Way more than I thought I would. And, there's plenty left to spend.
Best of luck.
Daris,
64 PD4106 |
Tom Caffrey (Pvcces) (65.74.66.104)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, August 01, 2004 - 10:44 pm: | |
Jay, and here is one more point of view. Two stroke engines seem to lose efficiency more than four stoke engines before they are rebuilt. I believe that this is the biggest reason for the 200,000 mile scheduled overhauls metioned above.
The 4106 with a standard transmission can get nearly 10 mpg in good condition, but can lose several mpg as they become worn. If it has the V730, deduct at least two mpg.
If you can learn how easily the engine starts when stone cold (30 degrees) and what the fuel mileage was averaging in recent use, I would think that this would be the most important indicator of the condition of the engine.
Good compression will give you the best economy and poor compression will drive you to rebuild it. I don't think the 3 quarts per 1000 miles tells you enough and the kind of use is likely to affect it more than you might think.
Good luck in figuring this rig out.
Tom Caffrey PD4106-2576
Suncatcher |
Gary Carter (68.25.95.66)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, August 02, 2004 - 1:22 pm: | |
At the MTC in Mineapolis/St. Paul the 6v71 and 8V71 would usually go about 400K before needing rebuilt. And this was doing one block long drags all day long. As a side note they have yet to get a 4 stroker that will do 100K on a regular basis. In fact if they could buy them they would go back to V71s and VS2s.
The main reason engines are getting the high milage before overhaul these days is OIL and air cleaners. Many of the late 8V92s in trucks easy got a million miles on them. Problem was finding one. |
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