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Old 06-23-2017, 11:06 PM   #11
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Originally Posted by Brad_SwiftFur View Post
The 318 and 360 were *VERY* common motors back in the day, the former being a 5.2L and latter being 5.9L. Both were in production for many, many years, and were produced in school bus and RV variants (I have no idea what the differences are). It should be very easy to find parts for this engine.

I wouldn't get into tearing apart the transmission just yet to replace the clutch. Some of these older hydraulic clutches needed some effort to bleed, and more to the point, it had been parked for ... how long? The clutch disk may be sticking to the flywheel and/or pressure plate. (I re-read the post and see it was driven with a non-releasing clutch). If the clutch isn't slipping, then you do *NOT* need a new clutch (yet). It could be out of adjustment (some don't have adjustments, some are self-adjusting, unlikely if the clutch has been in a while and was working fine at some point before), or the release bearing/forks need work (I had this happen on an old Peterbilt, the release fork assembly came apart and simply needed to be reassembled). A clutch disk can shatter and expand between the pressure plate and flywheel (uncommon, unless it was way over it's RPM limits, like if someone dropped it into 2nd instead of 4th).
It totally starts up no problem and would drive right now, I just won't drive it how it is.

Okay well that makes me feel a bit better about things. So hopefully it is something along the lines of what you are saying it could be, and when my mechanic comes over on Monday he will be able to fix it for me. That would be really amazing. I would have to agree taking the transmission apart is something I would really like to aviod. It's wierd to me that my mechanic didn't try to look at it before actually embarking on finding a clutch for it.

I really should figure all this stuff out for myself so I can just do the work.

I just wonder why he and I are having such a hard time finding a clutch though if it really is so common. I've called around and not been able to find anything.

Well anyway I think you have eased my mind a bit and informed me on many things I was not aware of and I really appreciate you taking the time to do that for me!

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Old 06-23-2017, 11:09 PM   #12
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Is the clutch operated by a separate, stand alone master cylinder? If so, they are typically very small compared to the brake unit.
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Old 06-23-2017, 11:15 PM   #13
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Is the clutch operated by a separate, stand alone master cylinder? If so, they are typically very small compared to the brake unit.
Well what was on there was not right at all I found the original still in the bus and compared to the one he put in there it was at least twice the size. As for the brake master I do not belive it is the correct one either and I'll probably be replacing it as well or at least bleed it and see how it does because my breaks are engaging but pretty much to the floor before they do. I really don't understand how he drove it safely as far as he did.

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Old 06-24-2017, 12:33 AM   #14
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What you have in that bus is not the 318/340/360 that was used by Mopar for years and years.

What you have is the old style wide block 318.

It is called the wide block because of the way in which the heads are mounted. On the newer engines the heads were mounted closer in which is why they were called the narrow block.

The 318 wide block was a powerhouse. It would out pull the GM 348/409 and the Ford 390/428. Which is why Mopar did not offer a big block engine in any of their trucks until the late '60's--they didn't need to!

The wide block requires some care and feeding the newer engines do not require. Among many of the differences, the wide block had mechanical lifters which require adjustment once in a while.

I am sure that if you go to NAPA or CARQUEST and tell them you have a medium duty Dodge with a wide block 318 they should be able to find the parts you need.

By the way, virtually no parts will interchange between the old wide block or the newer narrow block engines.
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Old 06-24-2017, 12:34 AM   #15
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Originally Posted by cowlitzcoach View Post
What you have in that bus is not the 318/340/360 that was used by Mopar for years and years.

What you have is the old style wide block 318.

It is called the wide block because of the way in which the heads are mounted. On the newer engines the heads were mounted closer in which is why they were called the narrow block.

The 318 wide block was a powerhouse. It would out pull the GM 348/409 and the Ford 390/428. Which is why Mopar did not offer a big block engine in any of their trucks until the late '60's--they didn't need to!

The wide block requires some care and feeding the newer engines do not require. Among many of the differences, the wide block had mechanical lifters which require adjustment once in a while.

I am sure that if you go to NAPA or CARQUEST and tell them you have a medium duty Dodge with a wide block 318 they should be able to find the parts you need.

By the way, virtually no parts will interchange between the old wide block or the newer narrow block engines.
Thank you that is great information!

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Old 06-24-2017, 09:01 AM   #16
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Nice Bus!!! Good luck on the repairs!
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Old 06-24-2017, 10:03 AM   #17
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As cowlitzcoach noted, that engine will require a bit of extra care and feeding. Among other things, if the heads haven't been rebuilt with hardened valve guides and seats, you'll need to add lead additive to the fuel. Been a while since I've had to remind anyone of that one!
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Old 06-24-2017, 10:08 AM   #18
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Originally Posted by brokedown View Post
As cowlitzcoach noted, that engine will require a bit of extra care and feeding. Among other things, if the heads haven't been rebuilt with hardened valve guides and seats, you'll need to add lead additive to the fuel. Been a while since I've had to remind anyone of that one!
Do you know how often I will need to do that or is it just a one time thing?

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Old 06-24-2017, 10:54 AM   #19
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Originally Posted by brokedown View Post
As cowlitzcoach noted, that engine will require a bit of extra care and feeding. Among other things, if the heads haven't been rebuilt with hardened valve guides and seats, you'll need to add lead additive to the fuel. Been a while since I've had to remind anyone of that one!
Not true!

Mopar, like IHC, had hardened valve seats long before it was necessary.
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Old 06-24-2017, 11:24 AM   #20
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Not true!

Mopar, like IHC, had hardened valve seats long before it was necessary.
So what is the extra care and feeding that needs to be done

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