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View Full Version : EPL, Johnycat8, Crazywatson, or who-ever knows the right stuff about 800 engine



Beach Leo
04-28-2015, 05:20 PM
I know you guy's know the right stuff about rzr 800

Any-way mine is finally starting to use a shit-load of oil

last ride of 90 miles she ate 18 oz

So if you please, help me out with your vast knowledge on what to do

Keep in mind that I am a cheap-bastard:p

And I do not wanna put stuff in her un-less I absolutely have to

If its just the Valve guilds than that is all I will do

If its just the rings the same goes

Don't wanna put pistons and jug in her if I do-not have to

And where do I get parts for it?

One more thing she does not foul the plugs using all that oil

Thank You ahead of time

johnnycat8
04-28-2015, 05:32 PM
ok mr leo...

#1 problem i have seen is worn valves and guides.

#2 is rings a set isnt to bad i think i paid $65 for the set..(polaris sells them for just 1 piston so watch that)

#3 most of the time if the cyl has no scars and looks good you can use pool acid (muratic acid) to clean it up . the acid eats the aluminum from the pistons out of the hone marks....remember this is a coated cyl so dont try and hone out it wont work. if its bad you can have honed at a shop but need to re coat it

parts are not bad to re ring head is a little harder because of the small size ask your mach shop if they can do it. gaskits are pricy from polaris but work great i believe head was $65 alone the eng is soooo easy to work on only tricky part is getting rings in cyl

Beach Leo
04-28-2015, 05:56 PM
Thank You Cat8

How do I test if its worn guilds and valves?

Who do I send head to rebuild it?

Beach Leo
04-28-2015, 05:57 PM
Compression is still way-good

johnnycat8
04-28-2015, 06:32 PM
whats your at leo i belive 08 is 190 psi yours might just be the head.... any motorcycle shop and some car mach shop should be able to do it call nate at alba performance he does it

Beach Leo
04-28-2015, 06:41 PM
Its a buck85 with throttle wide open

Cranked it a few times

Thinking you are right just the head need re-working

Thanks again Bro

Beach Leo
04-30-2015, 03:24 PM
I heard that only the intake valves have seals? Is this true?

who has em?

Guess all I need is valve spring compresser to replace-em

johnnycat8
04-30-2015, 04:46 PM
the guides are most likely worn too... pull the valve cover off and remove the rockers grab the spring retainer and see if you can move it side to side that will be a good clue if guides are gone... some people add the seals to the ex also some dont... also check the plastic rotator under the spring they wear and sometimes so bad it stops the valve from rotating

Scoundrel
04-30-2015, 07:20 PM
Any-way mine is finally starting to use a shit-load of oil


How many miles did you have on it when this happened?
I have a 2010 RZR S 800. How many miles should I be able to get before rebuild, assuming I don't dust the engine or other foolishness. I ride mostly mountain trails, rarely any sand, usually at moderate speeds (10-40 mph).

Beach Leo
04-30-2015, 07:59 PM
How many miles did you have on it when this happened?
I have a 2010 RZR S 800. How many miles should I be able to get before rebuild, assuming I don't dust the engine or other foolishness. I ride mostly mountain trails, rarely any sand, usually at moderate speeds (10-40 mph).First 3-4 years i had her put about 9-10 on her, last 3 year put only 2 on her

Been burning way to much oil the last thousand or so

The only way she held up this long, is I drive her slow and easy

You should be able to get 10 on her if you take care of her and go slow

Beach Leo
04-30-2015, 08:03 PM
the guides are most likely worn too... pull the valve cover off and remove the rockers grab the spring retainer and see if you can move it side to side that will be a good clue if guides are gone... some people add the seals to the ex also some dont... also check the plastic rotator under the spring they wear and sometimes so bad it stops the valve from rotatingWay-Good stuff Cat8 Thank You

I am going to try and get another mile outa her, before I tear into her

Hoping to make it to winter, riding season right now, Riding season all the time in Mccloud

Scoundrel
04-30-2015, 09:30 PM
Eh, I'll probably get about 7500 then. :)

EPL
05-06-2015, 11:46 AM
On my XP900 when it was using a lot of oil it was the valve guides . With that said on the 800 if your going to the head it is easy to change the rings at the same time.

The Rattler (BLR)
05-06-2015, 11:49 AM
When we were following you Saturday Leo we could see Blue smoke through the dust lol..hopefully you can get it fixed to ride with us at Sand Mountain

Beach Leo
05-06-2015, 06:39 PM
Yep for certain i am forced to finally tear it apart, used over a quart for our 103 mile shasta to trinity ride

She has gone seven easy years with-out a lick of trouble, so that ain't to shabby

I am thinking of instead of going up like most do, may sell her or part her out, than get a 1000xp

Naaaa been really thinking of 570 Ace instead

Don't really know what am going to do at this moment

Beach Leo
05-07-2015, 03:47 PM
I decided not to cheap-out, but I am doing all the work my-self, so guess I am cheapening-out

Ordered new jug, pistons, seals, rings, gaskets, from cheapcycleparts for 700 buxs

prolly get in done in June, parts will be here next week

Shit they want 2000 to 3000 buxs if they rebuild it, sounds like easy money to me

Will take pics and let you all know

How long it will take an old, ugly, fat, slow guy to do-it!

Beach Leo
05-09-2015, 03:40 PM
To Easy

About 1 hr to take apart

Enjoy my very entertaining Video

Sang a song in it, to make it not so Boring





https://www.youtube.com/watch?v=XsnV9I9Ra5E&feature=youtu.be

johnnycat8
05-09-2015, 11:54 PM
wiggle the valves see if any movement id just about bet guied are worn that old... nice job on the song their leo

Beach Leo
05-10-2015, 08:52 AM
Thanks Cat8

Yep the exit valves are a little burned

Going to replace-em

So while I have valves out will replace guilds

Beach Leo
05-10-2015, 09:13 AM
Look how cooked that one exit valve is well done, other one just medium well

Going to replace both of-em


http://i924.photobucket.com/albums/ad89/LeoBeach/IMG_9565_zpssjcuntst.jpg

Beach Leo
05-10-2015, 02:14 PM
Poor Mans Valve spring compressor



http://i924.photobucket.com/albums/ad89/LeoBeach/IMG_9566_zpsufnfy6rm.jpg

Beach Leo
05-10-2015, 02:31 PM
The Valve seat where the cooked Valve was is in way-good shape



http://i924.photobucket.com/albums/ad89/LeoBeach/IMG_9567_zps3ljkb4j0.jpg (http://s924.photobucket.com/user/LeoBeach/media/IMG_9567_zps3ljkb4j0.jpg.html)

Beach Leo
05-10-2015, 02:36 PM
So looks like will replace both exits valves and intake valve seals

So now my Total cost is now up to $310.00

Hope I do not find any-thing else to spend my hard earned money on

Mike621
05-10-2015, 05:09 PM
Looking good Leo, keep up the good work��

johnnycat8
05-11-2015, 04:01 PM
the contact margin on the valve is way too wide time for a valve job too

Beach Leo
05-11-2015, 05:40 PM
the contact margin on the valve is way too wide time for a valve job tooHow wide should it be?

Beach Leo
05-11-2015, 05:51 PM
May cost less just to get another used complete head

Any-way what years of cylinder head will work? 08 to 10? or 08 to 14?

They all look the same

Beach Leo
05-15-2015, 11:28 AM
Just wondering while I wait for parts

Why is exhaust valve getting so hot to burn-em?

I know she ain't running lean to get-em hot at 12 mpg

The only thing I can figure is my s- exhaust has to much back pressure

Does that sound about right?

crazywatson
05-16-2015, 03:11 PM
How do you know it's not running lean?

EPL
05-18-2015, 07:45 PM
Leo , just put some ring in it and get a valve job done and lets go riding !!!

Beach Leo
05-22-2015, 09:16 PM
How do you know it's not running lean?Don't Really know nothing Steve

She just smells rich

Any-way got head work done

All the stuff is here

Just gotta put her back together

Beach Leo
05-23-2015, 04:54 PM
Got her all put back together

What a piece of cake these lawn-mower engines are

No More 35 hp she now has about 55 hp

Took about 3 hour >>>To Easy



http://i924.photobucket.com/albums/ad89/LeoBeach/IMG_9571_zpsvshgx41u.jpg (http://s924.photobucket.com/user/LeoBeach/media/IMG_9571_zpsvshgx41u.jpg.html)

Beach Leo
05-23-2015, 05:00 PM
Change my air intake system for the 3rd and last time I hope

These engine would last for-ever if not for all the fine-Dust they suck into-em

Dis-like having to rebuild-em every 7 years

Fleetguard OptiAir W/Polaris prefilter and sock, should do the Trick

Will find Out!!!



http://i924.photobucket.com/albums/ad89/LeoBeach/IMG_9573_zpsvyvhuvkl.jpg (http://s924.photobucket.com/user/LeoBeach/media/IMG_9573_zpsvyvhuvkl.jpg.html)

EPL
05-28-2015, 07:17 AM
Got her all put back together

What a piece of cake these lawn-mower engines are

No More 35 hp she now has about 55 hp

Took about 3 hour >>>To Easy



http://i924.photobucket.com/albums/ad89/LeoBeach/IMG_9571_zpsvshgx41u.jpg (http://s924.photobucket.com/user/LeoBeach/media/IMG_9571_zpsvshgx41u.jpg.html)


Glad to hear it was an easy job .

Beach Leo
06-02-2015, 11:44 PM
Just checked oil in it today

She used no oil for my 60 mile Iron-Gate ride

and rode the Volcano as well for 80 miles

crazywatson
06-03-2015, 08:35 PM
Good job Leo

EPL
06-03-2015, 08:37 PM
Just checked oil in it today

She used no oil for my 60 mile Iron-Gate ride

and rode the Volcano as well for 80 miles

Good to hear Leo !!

Beach Leo
06-03-2015, 10:23 PM
Thanks Ed and Steve

Kinda miss her not being in the city with me to work on her

She will be in Mccloud all year now and we will be hitting the Volcano many times

Beach Leo
08-05-2015, 10:44 PM
Up-Date:

It took over 250 Miles for the rings to seat in. Have 450 miles on it now have not used any Oil

Once it was broken in, had more power and ran Way-Good

LBR
08-06-2015, 09:20 AM
Makes perfect sense, thanx for the update.

Beach Leo
08-06-2015, 01:43 PM
Makes perfect sense, thanx for the update.Hey Bro

No More Blue Smoke When You are Behind Me