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streamquest · 05-30-2010, 07:24 PM

As a new member with a 325 Cumins/Allison/ GV unit, I'm trying to figure out what to do regarding carrying a spare. My rig didn't come with one, although it appears that there might have been some provision to carry one under the floor, just forward of the fuel tank. I've got 8r19.5 Michelin XVA's all around, except the tags (which are Coopers, same size).
Forgive me if I'm being dense, but are those of you with spares carrying mounted tires, or just the rubber? And if the tires are mounted, what wheel do you have the tire mounted on? It appears that the front wheel is quite different from the rears.

Many Thanks,
Charly.

John H. · 05-31-2010, 03:27 AM

Hello streamquest, My 345 has a spare

a steel wheel complete and ready with rubber, I assume ? for the drive, tag axle

streamquest · 05-31-2010, 11:33 PM

Thanks John.

Is it safe to assume then that a flat on the front will still leave you stranded since the rear wheels would not fit up front?

Charly.

Keyair · 06-01-2010, 06:46 AM

As a Noob here I also looked at the front and rear wheels and thought they were very different.
In fact on my 345 they steels, and are all the same... the offset of the wheel rim is mounted inside on the front, and the inner drive axle, and the outer drive axle and the tag they are mounted offset out... if that makes sense!

cooperhawk · 06-01-2010, 08:08 AM

On our 345 I annually replace the front tires with new and then rotate the front tires to the tag. All the wheels are the same bolt pattern and I can move tires where ever I want. The only steel wheels I have are the inside duals on the drivers.

John H. · 06-02-2010, 05:50 AM

Quote:

Originally Posted by streamquest

Thanks John.

Is it safe to assume then that a flat on the front will still leave you stranded since the rear wheels would not fit up front?

Charly.

No, You Just reverse the wheel, Inside out

where you in Florida this past winter streamquest ?

we visited with some nice airstreamer's from Mass.

down Saint Augustine way

DaveFL · 06-02-2010, 12:02 PM

Quote:

Originally Posted by gunner

I thought I would provide an update on tire temperatures after I installed the Michelin XZE 225/70R19.5 Tires on the front and drives and 8R19.5 on the Tags.
Ambient temperature 85 degrees farenheit
Full tank of Gas, Full tank of water
Drove 30 miles.
All tires except for Tags 85 psi
Tags 75 psi

Temperature farenheit
Tire inside middle outside
left front 109 123 122
right front 105 117 105
Drive left outer 121 133 132
Drive left inner 127 129 132
Drive right outer 116 129 127
Drive right inner 124 131 130
Tags left 102 122 115
Tags right 101 114 120

I am awaiting for your comments/concerns especially since the Tags are larger tires than the drives.

With consistant center of tire warmer I would reduce air pressure, to get the numbers more consistent.
What was the basis for the 85# if not a weight based number, I would reduce front to 80 recheck numbers and maybe even 75 and check.
I have found I get a difference on the sunny side of the vehicle if the right was sunny the front would be right but rear doesn't match.

streamquest · 06-02-2010, 03:30 PM

Thanks again John,

I was definitely not in Florida.
I just purchased my rig this past winter, and have spent most of the time since then tearing it apart. I'd like to think that I'm on the "comeback trail" at this point, but I still have a LOT of work to do.

As far as the tires go, I have Alcoa aluminum wheels on all six. Do you know if a spare mounted on a steel wheel would replace any/all of them in a pinch? I'm guessing "yes", but I'd like to be sure before I buy one.

Charly

John H. · 06-03-2010, 01:48 AM

Quote:

Originally Posted by streamquest

Thanks again John,

I was definitely not in Florida.
I just purchased my rig this past winter, and have spent most of the time since then tearing it apart. I'd like to think that I'm on the "comeback trail" at this point, but I still have a LOT of work to do.

As far as the tires go, I have Alcoa aluminum wheels on all six. Do you know if a spare mounted on a steel wheel would replace any/all of them in a pinch? I'm guessing "yes", but I'd like to be sure before I buy one.

Charly

Yes Charly, that would work I believe

All Alcoa, You are Fortunate

Paul J Mauro · 03-03-2020, 03:00 PM

Hi Charly
up in Bolton Ma with my original 85 345 and need to do an engine/tranny for the next 200k my kids will enjoy.Talking to Bob in NY ( who I guess you Know) for some help.The project is way above my skill level. Have you done the engine on your 345? and did you upgrade to fuel injection , banks exhaust and all the stuff I see on line or just as stock crate engine. Thanks in advance for any advice .

martin300662 · 03-03-2020, 04:14 PM

Quote:

Originally Posted by Paul J Mauro

Hi Charly
up in Bolton Ma with my original 85 345 and need to do an engine/tranny for the next 200k my kids will enjoy.Talking to Bob in NY ( who I guess you Know) for some help.The project is way above my skill level. Have you done the engine on your 345? and did you upgrade to fuel injection , banks exhaust and all the stuff I see on line or just as stock crate engine. Thanks in advance for any advice .

Have you looked at Cheifair's engine swap thread?

https://www.airforums.com/forums/f31...-a-140290.html

He isn't that far from you.

stream3 · 03-04-2020, 06:32 AM

Quote:

Originally Posted by Paul J Mauro

Hi Charly
up in Bolton Ma with my original 85 345 and need to do an engine/tranny for the next 200k my kids will enjoy.Talking to Bob in NY ( who I guess you Know) for some help.The project is way above my skill level. Have you done the engine on your 345? and did you upgrade to fuel injection , banks exhaust and all the stuff I see on line or just as stock crate engine. Thanks in advance for any advice .

Paul-
I just had a full swap done on my 345. HT 502, tranny, FI, banks, etc. Done in Ohio. If you want particulars feel free to PM me.

chiefair · 03-04-2020, 07:22 AM

I'm very happy with my 502 swap. I did not do fuel injection but only because the project was unplanned and not budgeted for. I have had great luck with my carb but I know fuel injection would have been a better choice. I did install a Banks Powerpack which I feel was worthwhile.

If funds were not an issue, I would consider a fuel injected 502 with an overdrive transmission and controller. I think that combo is now around $15,000 plus installation.

The extra power will make you wish for more gears!