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Longevity for 800ho


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#1 Jordan72

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Posted 06 January 2017 - 10:34 PM

Hey guys I have a 2004 Renegade 800ho with 7500 miles on it. I have owned it for a while now and I purchased it with 1900 miles on it. Everyone that I run into cannot believe that I have an 800 that made it past 4000 miles. Should I be doing anything to keep it healthy and running or just let it live its life. I hate to touch it while its running so good if I don't need to. I plan to compression test it but was wondering if there is anything else I could do to help. I keep thinking of buying a rebuilt motor off of a guy near us that sells them but I hate to pull a motor that still runs so good.

 

Thanks in advance



#2 Mach189

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Posted 07 January 2017 - 12:15 AM

Do some plug chops(idle, mid, and full). If they all look good, do compression test and then a leak down test. If the engine passes them all, keep grabbing throttle.

#3 craddock

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Posted 07 January 2017 - 12:16 AM

If it was mine and I was low on funds, I would have already pulled it and resealed the bottom end. Leave top end alone if you can't afford. But yes. Your on borrowed time. And over cheap seals and grease. Or wait and buy cases, a crank, and a jug. Plus pistons. If you choose that route we have several sets of cases.

Edited by craddock, 07 January 2017 - 12:16 AM.


#4 Mach189

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Posted 07 January 2017 - 12:17 AM

Or if you know someone with a borescope, borrow it. You can check some things out without pulling the engine apart.

#5 rev800guy225

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Posted 07 January 2017 - 01:24 AM

I have a 2004 mxz 800 1400 kms on it, one rebuilt (piston wore out no melt down) love it tons of power, one or two people have trouble with their 800 and then everyone gets worked up about them, do your normal checkup and it should last


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#6 rev800guy225

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Posted 07 January 2017 - 01:24 AM

Sorry forgot to add a 0, 14000kms


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#7 wowchad

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Posted 07 January 2017 - 01:25 AM

My 2009 made it to 5600 hard miles.
Most are seeing 4000-5000'ish and then you'll loose the mag side seems typical.

Keep you eyes out to have a spare ready to drop in. In fact some one had 3 different engines for sale on here just the other day & I think one was a 800ho

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#8 craddock

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Posted 07 January 2017 - 03:18 AM

I have a 2004 mxz 800 1400 kms on it, one rebuilt (piston wore out no melt down) love it tons of power, one or two people have trouble with their 800 and then everyone gets worked up about them, do your normal checkup and it should last
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One or two people.....

I am at a loss for words. A lot of information on thi site is regurgitated from what they hear. It is sickening at times. I have seen wrong information from well respected people on here that then gets construed as fact. And people love to throw out "facts"

Just this week.. hell, just yesterday!... Nevermind.

Believe what you want

#9 Tbone675

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Posted 07 January 2017 - 07:39 AM

Mine lost a inner PTO seal at 5.5k miles and melted the piston and cracked the case. Most I see on here go at around 5000 miles. About the most you can do is check the crank run-out and do a leak down test. Maybe add iso to the outer PTO and mag bearings.

#10 Darrens66

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Posted 07 January 2017 - 01:56 PM

I've seen about every issue you can have with these motors . Some my fault some not. The one thing I would say to help save you a ton of grief and money is do a leak down test on it . If it passed then compression test if that's good well I guess I'd just ride it . I might pop the pto seal and check the Iso grease in bearing maybe freshen it up . I firmly believe after two motors and crank failures if I would of done leak down test from the beginning id still be on my first motor.


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#11 thedoo

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Posted 07 January 2017 - 04:41 PM

sorry to hijack your thread

how much is the average lower end rebuild? i have 4500 miles on mine sons 06 and i did the top end about 700 miles ago myself and injected new iso in the mag and pto areas where most people do last season, but if its not crazy money to rebuild the lower end i may just get it done. not sure i want to tackle it myself, i have only ever done top end stuff. What about the people who are have there cases drilled out for oil feeds instead of using iso again?



#12 wowchad

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Posted 07 January 2017 - 05:18 PM

Cranky Scott's put mine together and I know he does the case upgrade which helps A LOT

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#13 HyperXCF

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Posted 07 January 2017 - 09:09 PM

The bottom line is there are no guarantee's.  If your concerned then freshen it up before it's to late. 7,500 miles I'd definitely be thinking about it.



#14 Darrens66

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Posted 08 January 2017 - 01:17 PM

sorry to hijack your thread
how much is the average lower end rebuild? i have 4500 miles on mine sons 06 and i did the top end about 700 miles ago myself and injected new iso in the mag and pto areas where most people do last season, but if its not crazy money to rebuild the lower end i may just get it done. not sure i want to tackle it myself, i have only ever done top end stuff. What about the people who are have there cases drilled out for oil feeds instead of using iso again?




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#15 Darrens66

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Posted 08 January 2017 - 01:25 PM

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Drilling the cases for oil feed has its advantages for sure . The disadvantage and why some don't do it any more is because the oil consumption goes way up and the sled becomes more expensive to ride . My brother had it done to his when he had the crank welded and big bore kit put on and it's performed flawlessly for several seasons now . I was going to do it to mine on the last build but the guys that done my brothers quit doing them for reason I stated above . He said he had to many customers complain to him about oil usage so he won't do them anymore. That was the seadoo clinic in Michigan ..


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