Used coach buyers remorse...

luvrbus · August 15, 2020, 07:36:20 PM

Quote from: richard5933 on August 15, 2020, 06:19:21 PM
In frame rebuilds are done on buses all the time.

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Inflame are the biggest waste of money on a engine you can spend unless it a very low mileage engine that had a failure,DD never made a inframe kit you bought it piece by piece I very seldom will do one .it's coming out so I can check everything and go back to the OEM specs

dtcerrato · August 16, 2020, 07:32:27 AM

We consider every penny we put into our in -frame money very well spent and yes there are in-frame kits for 2 stroke DDs. The only reason we piece mealed for parts was to take advantage of genuine original DD parts when we could. The proof is in the pudding & OTR experience before & after an in-frame rebuild is testament to what it achieved & the only evidence we deem necessary. Extremely satisfied to the reborn performance it achieved.

luvrbus · August 16, 2020, 08:09:24 AM

Quote from: dtcerrato on August 16, 2020, 07:32:27 AM
We consider every penny we put into our in -frame money very well spent and yes there are in-frame kits for 2 stroke DDs. The only reason we piece mealed for parts was to take advantage of genuine original DD parts when we could. The proof is in the pudding & OTR experience before & after an in-frame rebuild is testament to what it achieved & the only evidence we deem necessary. Extremely satisfied to the reborn performance it achieved.

Inframe kits are not available for DD using DD parts is what I said Dan some dealers like Pacific Diesel will sell you a kit but it is going to be a F/P the lesser of the evil kits sold today now they send don't even take the time to match the sets the pistons and liners come in separate boxes lol and they preached for years don't mix the piston up from the liner it came in ,Bus people like the price they cost around $250 a set vs $500 for a Detroit piston and liner set,They buy you time usually they will last a 100,000 miles then the zinc coating starts to peel off the skirts.other parts wear and there is no way to check those doing a inframe ,people do what they choose all because of cost.At one time way back F/B offered a premium set that was nothing but repacked DD parts I chased one of those a week for Yvans bus and found one in Ohio that had been on the self for 20 years lol and guy sold it to me a good price good luck

Jim Blackwood · August 16, 2020, 08:38:55 AM

It's all a matter of economics isn't it? If you expect the engine to go another quarter or half million miles the extra effort of a full rebuild is justified so that you can measure and catch any irregularity. But if the goal is 100k+ an in-frame makes sense provided the only thing wrong with the engine is a lack of compression. I did an in-frame on a C4 caterpillar dozer once and although the pony was badly in need of a rebuild, provided I could get that to start the main engine did quite well. I did the landscaping that I required and sold the dozer. Let the new owner worry about the pony. Sort of the same thing in a way.

Jim

someguy · August 16, 2020, 01:29:32 PM

Quote from: luvrbus on August 16, 2020, 08:09:24 AM
Dan some dealers like Pacific Diesel will sell you a kit but it is going to be a F/P the lesser of the evil kits sold today now they send don't even take the time to match the sets the pistons and liners come in separate boxes lol

That is because the tolerances of today's manufacturing and QC processes are so good that they don't need to do individual matches anymore. Every piston fits every liner in the kit because all the liners and pistons are the same. They probably sort liners into size groups and build kits of a group of the same. Ditto for pistons.

Quoteand they preached for years don't mix the piston up from the liner it came in

20 years ago, yes. Processes and times have changed.

QuoteBus people like the price they cost around $250 a set vs $500 for a Detroit piston and liner set,They buy you time usually they will last a 100,000 miles then the zinc coating starts to peel off the skirts.

Zinc coated piston skirts ?

someguy · August 16, 2020, 01:31:34 PM

Quote from: Jim Blackwood on August 16, 2020, 08:38:55 AM
It's all a matter of economics isn't it? If you expect the engine to go another quarter or half million miles the extra effort of a full rebuild is justified so that you can measure and catch any irregularity. But if the goal is 100k+ an in-frame makes sense provided the only thing wrong with the engine is a lack of compression. I did an in-frame on a C4 caterpillar dozer once and although the pony was badly in need of a rebuild, provided I could get that to start the main engine did quite well. I did the landscaping that I required and sold the dozer. Let the new owner worry about the pony. Sort of the same thing in a way.

Jim

Provided the rest of the engine is in good shape (head, turbo, cam, injectors, mainly) an inframe in a modern 4 cycle diesel is good for way more than 100,000 miles.

luvrbus · August 16, 2020, 01:46:27 PM

Wasn't 20 years more like 4 years ago,McBees still send their inside the liners but like all offshore crap the outside diameter could be off,LOL I have 2 F/P liners setting in the floor to send back it would take a press to load a piston in both of those oh yea they are close