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Old 12-06-2021, 07:27 AM   #1
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Shocks, when to change, what to use?

CC #30752, 2002 Allure 36 foot double slide. Front tires Toyo, tire pressure 115 psi. Air bags have been changed, new ride valves, coach ride level calibrated to factory standard, a little less than 3 inches between top of tire and top of wheel well in front, also per spec. Near new Toyo tires, one year.

63K miles. Original shocks. No porpoising, just rides harsh in front.

Time to change shocks? What are the best for this coach?
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Old 12-06-2021, 08:18 AM   #2
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115psi seems high to me. Have you weighed coach and set according to weigh? koni shocks
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Old 12-06-2021, 09:33 AM   #3
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Quote:
Originally Posted by mike brez View Post
115psi seems high to me. Have you weighed coach and set according to weigh? koni shocks
Yes to check your front PSI, I agree with Mike it seems high for the front of a 36' coach.

Shocks?

- If Koni EVO '99's' are available for the front end. A no brainer, swap them out.

- If no '99's' available, I'd look for the Gold FSD's for the front

- For the rears, I'd go with Koni Adustables. Just make sure they're the SP3 generation. (Some warehouses are still selling old new stock SP2 generation - which are not as robust.

- I've also had good results with our Allure, adding the Source Engineering Comfort Control Valves. They help the coach 'set' faster in curves, emergency maneuvers and shifting cross winds.

Best of luck to you, have some fun,
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Old 12-06-2021, 11:09 AM   #4
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That 3" spec on the front wheel clearance sounds a little short to me. If you hit some large woop dee doos, you could bottom the coach out. IIRC, the factory recommendation for tire pressure is 120 front and 110 rear. I run my 40 at 110 front and rear.
I did have the Koni FSDs all around and the coach wallowed all over the road. After 20K miles I changed over to Road Kings for a much better ride. RK is no longer in business so I have no recommendation for new shocks.
I think you came with the red adjustable Koni all around. You might see what the setting is and change to the softer setting.
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Old 12-06-2021, 04:28 PM   #5
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That 3" spec on the front wheel clearance sounds a little short to me. If you hit some large woop dee doos, you could bottom the coach out. IIRC, the factory recommendation for tire pressure is 120 front and 110 rear. I run my 40 at 110 front and rear.
I did have the Koni FSDs all around and the coach wallowed all over the road. After 20K miles I changed over to Road Kings for a much better ride. RK is no longer in business so I have no recommendation for new shocks.
I think you came with the red adjustable Koni all around. You might see what the setting is and change to the softer setting.
Following up on dons2346 (Hey Don!)....

The Gold IFS are especially challenged on 40' and above CC's with IFS... Smaller coaches might be better supported. (And I believe the Intrigue parked next to me last month in Rolling Hills Casino, was a 40? Is that correct Don?).

I've added my assessment, and of course I'm an enthusiast CC owner, not an expert by any means - so take the assessment as just my info sharing!!!

Here is the link to the thread on Koni EVO '99's' vs my Road King 2 1/2" diameter era shocks (Vs their later 3" version.) for out Allure. (And I'll note that the Magna had 2 1/2 Road Kings on Steer and Drive when we bought her last year. And those work a bit hard to maintain the 45 slightly heavier (Lots heavier!) Magna. I may ask the company that built these shocks for RK, to re-valve the fronts for me in the future - or maybe not!):

https://www.irv2.com/forums/f112/ord...nd-344847.html

And shocks are not quite as bad as old Dino vs Syn oil, or which tire is the best - threads... Lots of varying opinions!

Best to all,
Smitty
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Old 12-06-2021, 07:26 PM   #6
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Your coach was 55 ahead of mine. Your front suspension may be different but mine is the Neway-114 and it is spec'd at 17 3/4" on center of the shock bolts.
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Old 12-06-2021, 09:34 PM   #7
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"The Gold IFS are especially challenged on 40' and above CC's with IFS... Smaller coaches might be better supported. (And I believe the Intrigue parked next to me last month in Rolling Hills Casino, was a 40? Is that correct Don?)."

Yup. My coach is a 40 with the first edition of the Road Kings. I forgot to mention that I do have the Source Engineering control valves that do help when you run over speed bumps on an angle
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Old 12-08-2021, 05:06 PM   #8
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Road Kings shocks were built by King Shocks:

King Off-Road Racing Shocks, Bypass Shocks, Adjustable Coil Over Shocks, Air Shocks, UTV Shocks, Jeep Shocks, Pre-Runner Shocks, Adjustable Shocks, and Bump Stops

Road King was a separate company that marketed King shocks to the RV and truck industries. When the companies got divorced, Road King had all the RV model numbers and dimensions information and took that with them. That means that King Shocks can still build or rebuild Road King shocks but they don't know what size shock or valving fits what RV.

I was lucky to find another owner who had the dimensions and part numbers from an old invoice to enable King Shocks to build new rear shocks for our Affinity. We will be installing them next week.

Several years ago, we replaced the front Koni's with King Shocks and they made a big improvement in the handling. There are several old threads discussing the advantages of Road King or King shocks.
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Old 12-14-2021, 03:37 PM   #9
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I have Koni EVO 99s on the front and Koni FSDs on the rear. They do a good job overall but I feel like the front is overly harsh on sharp bumps. Some of that is probably the bit stiffer ride that comes with Toyos. I probably would have switched to Road Kings in the front by now if they were still available; I didn't realize that getting a custom order out of King Shocks was a possibility. Now I'm wondering who might have the necessary shock and valving info for my coach...
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Old 12-14-2021, 03:54 PM   #10
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2006 Inspire 36'. My Toyos have been set on 110 in front and 90 in rear for a few years now. My trucker buddy tells me at least 100 up to 120 cold.
I owned an auto and truck shop for 35 years and always was told and saw that a "leaking shock was a broken shock". I've never seen any evidence to randomly replace them for mileage or age. When the nitrogen leaks out it takes the oil out with it and shows on the shock. Different manufactures valving will change the rides but doesn't mean they are bad. Also, so many people think a shock helps with ride height when they do nothing for setting the height.
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Old 12-14-2021, 04:44 PM   #11
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Are you guys checking tire pressures HOT, or COLD?
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Old 12-15-2021, 12:37 AM   #12
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Are you guys checking tire pressures HOT, or COLD?
My post says cold. The side of the Tires say check cold. When I'm driving in CA and its 85 degrees outside my pressure monitor says around 128 pounds hot when I have front pressure at 110. I the summer in Oregon it goes to 120 hot.
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Old 12-15-2021, 08:01 AM   #13
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I remember reading somewhere it was suppose to be a ambient temperature of 68 degrees
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Old 12-15-2021, 08:10 AM   #14
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Are you guys checking tire pressures HOT, or COLD?

ONLY Cold!


Cold is defined, not as a specific temperature, but before driving, being exposed to sun or other factors that will change the temperature of the tire.


This is universal across all brands of tires in all applications.
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