Community Forums

Aggie · 12-16-2012, 09:07 AM

Well, I'll be the odd man out here.

By design, diesel engines operate with much higher compression, fuel and oil pressures than their gasoline counterparts. This is particularly true when starting a cold diesel engine.

Regardless of the engine manufacturer, many a great diesel has had its service life significantly shortened (or abruptly ended) by improper operation. If you want examples, you have to look no further than the plethora of diesel pickups coughing and barking and pouring out white smoke (incomplete combustion) on any given city street (and I'm not talking cold weather here).

I've held and used commercial driver licenses since before the advent of CDL's and maintain a CDL to this day. I was a Montana DOT officer for 11 years and had many opportunities to inspect diesel rigs of every size, shape and description that had been improperly operated and died on the roadside (and in the mountains).

If anyone told me they'd "hot-rodded" their diesel up a mountain, that would be the end of the discussion, and I wouldn't care if the rest of the vehicle were gold-plated and sang "Ave Maria". No sale. No way. No how.

But that's just me...

Wildbob52 · 12-16-2012, 09:50 AM

Just wondering what would the cost be for this diesel motorhome to go from Nashville Tennessee to Tampa Florida?

Thanks.

Papa_Jim · 12-16-2012, 08:27 PM

Quote:

Originally Posted by Wildbob52

Just wondering what would the cost be for this diesel motorhome to go from Nashville Tennessee to Tampa Florida?

Thanks.

Well, it's roughly 700 miles from Nashville to Tampa. That coach will probably get between 7 and 8 mpg, say 7 mpg. That means 100 gallons of fuel for the one way trip. I don't know what your fuel costs.

C&SL · 12-16-2012, 09:45 PM

Quote:

Originally Posted by jimkate

This is a very good brand for a motorhome. One of the best. Yes, it is normal for the bedroom to shake when the engine is running. Price sounds OK. It would be nice to find some more information about the mechanical maintenance history. Look it over carefully. Check the roof carefully for signs of leakages. Check the sidewalls for signs of delamination (bubbles in the sidewalls).

x2
As for the fuel cost, take your miles you travle and divide it in 1/2 and that will be about your diesel fuel cost will be!

Wildbob52 · 12-16-2012, 10:27 PM

Quote:

Originally Posted by jimkate

Well, it's roughly 700 miles from Nashville to Tampa. That coach will probably get between 7 and 8 mpg, say 7 mpg. That means 100 gallons of fuel for the one way trip. I don't know what your fuel costs.

Diesel fuel here is 3.89 a gallon.

Mr_D · 12-16-2012, 10:39 PM

Quote:

Originally Posted by Aggie

Well, I'll be the odd man out here.

By design, diesel engines operate with much higher compression, fuel and oil pressures than their gasoline counterparts. This is particularly true when starting a cold diesel engine.

Specs call for oil pressure on a some Cummins (our ISC is one) to be 30 psi at max rpm and 10 psi at idle when hot, how can that be higher than a gas engine? With a 9009 filter I do, however, show up to 90 psi at startup.

Mr_D · 12-16-2012, 10:42 PM

Quote:

Originally Posted by Aggie

Well, I'll be the odd man out here.

By design, diesel engines operate with much higher compression, fuel and oil pressures than their gasoline counterparts. This is particularly true when starting a cold diesel engine.

Regardless of the engine manufacturer, many a great diesel has had its service life significantly shortened (or abruptly ended) by improper operation. If you want examples, you have to look no further than the plethora of diesel pickups coughing and barking and pouring out white smoke (incomplete combustion) on any given city street (and I'm not talking cold weather here).

I've held and used commercial driver licenses since before the advent of CDL's and maintain a CDL to this day. I was a Montana DOT officer for 11 years and had many opportunities to inspect diesel rigs of every size, shape and description that had been improperly operated and died on the roadside (and in the mountains).

If anyone told me they'd "hot-rodded" their diesel up a mountain, that would be the end of the discussion, and I wouldn't care if the rest of the vehicle were gold-plated and sang "Ave Maria". No sale. No way. No how.

But that's just me...

On a diesel engine black smoke indicates incomplete combustion and probable too high EGT's.

Manuel B · 12-17-2012, 01:14 PM

From the CL posting,
"40' monaco dynasty cummnins mtr with 61000 miles on it..7.5kw onan upgraded side by side fridge satilite upgraded countertops and cabinets really a nice coach for a 97 model loan value at bank is 60,000 dollar please call or text 931-200-3545 has good tires and has full size 22.5 wheels"

Full size wheels, vs ?
It's the lowest priced Dynasty I've seen, If it went through a repo auction they usually clear out all papers/history.

Ernie Ekberg · 12-17-2012, 02:36 PM

betcha the tires are low profile

Poptop · 12-17-2012, 03:48 PM

I have one of the Norcold 1200 4 door refers that so many on the IRV2 website despise, and some say are DOA. Wife and I are full-timers so our refer is on 24/7/365 and it has performed flawlessly so far. We had the recall (thermo limit) done and are counting on it working for a long time to come. Based on my experience I wouldn't let a Norcold refer be a deal breaker if you otherwise like the unit. Also, get as much info as you can then go with your gut feeling on whether to buy or not. Your opinion is as good as any other one. Enjoy.