Blown Engine - 40" V10 Newmar

theoldwizard1 wrote:

Herdingdog wrote:
25,500 miles, v10, 6.8 liter. # 9 & 10 pistons only have 30 lbs of pressure. No idea why

Any decent mechanic can do something called a "leak down" test. It is a much better diagnostic tool than a simple compression test. That would cost a couple hundred dollars, but it would tell you specifically what is wrong, either intake or exhaust valves or rings.

MarkieBob wrote:

tropical36 wrote:

lryrob9301 wrote:
That's one of the "advantages" of having an extended warranty. If they want the extended warranty to pay they have to abide by their rules. No ifs, ands, or maybes otherwise they foot the bill.

By the way, there is no such thing as a 40 anything Newmar with a V-10.

You're right about the length anyway, as Newmar's larger Canyon Star's are only 39' 11"..... :W

That sounds like my air force captain brother--40 vs. 39.11. When I'd tell someone it was 5 miles to walmart from my house he would correct me and say it was 5.114 miles--and MEAN IT! Oh, he would also tell you that the poster said it was a 40" Newmar--not 40' :B

tropical36 wrote:

lryrob9301 wrote:
That's one of the "advantages" of having an extended warranty. If they want the extended warranty to pay they have to abide by their rules. No ifs, ands, or maybes otherwise they foot the bill.

By the way, there is no such thing as a 40 anything Newmar with a V-10.

You're right about the length anyway, as Newmar's larger Canyon Star's are only 39' 11"..... :W

JaxDad wrote:

tropical36 wrote:

timmac wrote:

tderonne wrote:

timmac wrote:

Well I like playing it safe, besides its best to never run at or near max for long term, I feel as experience with the same motor/trans as in this thread that 27,500 lbs should be max for this motor, this way there is some room for the motor not over working in the mountains and blowing a piston or head gasket, yes many have gone many miles at max load but they are riding on borrowed time for that weak link to blow..

Ford F650 and F750 are available with the V10. They have a GCWR of 37,000 pounds.

2018 F650/F750 brochure

Yea Ford just keeps upping the weight capacity of the V-10 to keep the sales going, I truly believe at 37,000 lbs the V-10 will be lugging in the mountains, or at best doing 25 mph thru the Rockies..


I was able to maintain around 45 mph thru the Rockies with 26,500 lbs but still felt this was a safe max before lugging the motorhome, 37,000lbs heck I would have been holding up traffic for miles..


Surly some diesel fans would back me up on this..

Well, 362HP is 362HP, no matter the RPM necessary for achieving it.
As for the torque though, 460lb ft isn't going to get it, no matter how much it screams and like 1150lb ft or more would, with a 400HP Diesel, lumbering along at 1400 RPM or so.

That in itself, never fails to fascinate me on those long 6% grades, with an engine that's mounted nearly 40ft behind us and no more than fast idling, while passing quite a few trucks, with the Jeep in tow.

Yes, but not everybody has a 40’er with a Jeep in tow.

A thermo-nuclear warhead will kill a fly, but so will a fly swatter from the dollar store.

tropical36 wrote:

timmac wrote:

tderonne wrote:

timmac wrote:

Well I like playing it safe, besides its best to never run at or near max for long term, I feel as experience with the same motor/trans as in this thread that 27,500 lbs should be max for this motor, this way there is some room for the motor not over working in the mountains and blowing a piston or head gasket, yes many have gone many miles at max load but they are riding on borrowed time for that weak link to blow..

Ford F650 and F750 are available with the V10. They have a GCWR of 37,000 pounds.

2018 F650/F750 brochure

Yea Ford just keeps upping the weight capacity of the V-10 to keep the sales going, I truly believe at 37,000 lbs the V-10 will be lugging in the mountains, or at best doing 25 mph thru the Rockies..


I was able to maintain around 45 mph thru the Rockies with 26,500 lbs but still felt this was a safe max before lugging the motorhome, 37,000lbs heck I would have been holding up traffic for miles..


Surly some diesel fans would back me up on this..

Well, 362HP is 362HP, no matter the RPM necessary for achieving it.
As for the torque though, 460lb ft isn't going to get it, no matter how much it screams and like 1150lb ft or more would, with a 400HP Diesel, lumbering along at 1400 RPM or so.

That in itself, never fails to fascinate me on those long 6% grades, with an engine that's mounted nearly 40ft behind us and no more than fast idling, while passing quite a few trucks, with the Jeep in tow.

Bird Freak wrote:

dodge guy wrote:

time2roll wrote:

Herdingdog wrote:
Sadly they have given up on the Extended Service Company - the wait for the inspector is 2 weeks - and they want to get back home with the 6 dogs and a Ranch waiting with animals to feed. They are going to tow the rig home $5000I'd like to say US Travel Care is a horrible Company and should rename to US Travel Doesn't Care!!!

WOW. I would rent an SUV to get home and have the V-10 repaired where located. That $5,000 would go nicely toward a crate V-10 replacement.

Yep I agree. they are not thinking this through clearly!

I agree. If they are willing to throw away $5K on towing why not just pay to have it fixed there? They may be good people according to op but don't seem very bright. Getting in a hurry can cost you a lot of money.

timmac wrote:

tderonne wrote:

timmac wrote:

Well I like playing it safe, besides its best to never run at or near max for long term, I feel as experience with the same motor/trans as in this thread that 27,500 lbs should be max for this motor, this way there is some room for the motor not over working in the mountains and blowing a piston or head gasket, yes many have gone many miles at max load but they are riding on borrowed time for that weak link to blow..

Ford F650 and F750 are available with the V10. They have a GCWR of 37,000 pounds.

2018 F650/F750 brochure

Yea Ford just keeps upping the weight capacity of the V-10 to keep the sales going, I truly believe at 37,000 lbs the V-10 will be lugging in the mountains, or at best doing 25 mph thru the Rockies..


I was able to maintain around 45 mph thru the Rockies with 26,500 lbs but still felt this was a safe max before lugging the motorhome, 37,000lbs heck I would have been holding up traffic for miles..


Surly some diesel fans would back me up on this..

dodge guy wrote:

time2roll wrote:

Herdingdog wrote:
Sadly they have given up on the Extended Service Company - the wait for the inspector is 2 weeks - and they want to get back home with the 6 dogs and a Ranch waiting with animals to feed. They are going to tow the rig home $5000I'd like to say US Travel Care is a horrible Company and should rename to US Travel Doesn't Care!!!

WOW. I would rent an SUV to get home and have the V-10 repaired where located. That $5,000 would go nicely toward a crate V-10 replacement.

Yep I agree. they are not thinking this through clearly!

tderonne wrote:

timmac wrote:

Well I like playing it safe, besides its best to never run at or near max for long term, I feel as experience with the same motor/trans as in this thread that 27,500 lbs should be max for this motor, this way there is some room for the motor not over working in the mountains and blowing a piston or head gasket, yes many have gone many miles at max load but they are riding on borrowed time for that weak link to blow..

Ford F650 and F750 are available with the V10. They have a GCWR of 37,000 pounds.

2018 F650/F750 brochure

time2roll wrote:

Herdingdog wrote:
Sadly they have given up on the Extended Service Company - the wait for the inspector is 2 weeks - and they want to get back home with the 6 dogs and a Ranch waiting with animals to feed. They are going to tow the rig home $5000I'd like to say US Travel Care is a horrible Company and should rename to US Travel Doesn't Care!!!

WOW. I would rent an SUV to get home and have the V-10 repaired where located. That $5,000 would go nicely toward a crate V-10 replacement.