Unless you're a hard core racer or otherwise obsessed with speed , any quad from 200 CC on up will give you plenty of speed for trail riding. My old '91 Honda 300cc 4x4 quad will hit 40 mph on the flat and level . A 450 should easily get up to 50 or more and probably match the 700. About the only advantage the 700cc would have is in pulling power or for plowing heavy snow, at a higher cost for fuel in the bigger motor. For normal riding , the 450 will be more than enough

QUADCRAZY has been around over 10 years now and there a lot of members that have come and gone. We had a PM message going so I decided to start a topic. If I miss anyone, please post. Anyone can post, even if you are not an old member, but please keep to the theme of updating us on what you are doing now, what's new, where you are hanging these days, etc. Some of the old timers: @SunLrider @CK1999_400ex @trailblazer_02 @hangingon @pete59edsel @fox300exchic @powermaddd400ex @Raptor8 @GREENIE @NEWACRIDER @atvredefined @lawny @jigolbeep @cheriah @Mudflap64 @pony @Lildaisygrl18 @Tagels @mikeexplorer @Lildaisygrl18 @Jonny450R @yokochrist @DeadAim @Bimmerdog @CRAZYKIWI @KnightHawk @Senator @mellowyellow @DJLime @Desert-Hawk @davefrombc @jeeptuff @kidatvs @kfx450r @hvy_chevy_one @Roody @rappy97 @Gunny @ALLYRATT @PolarisRich @Tim-ANC @jerod400ex @MIKEL5469 @swampcat07 @DirtDemon @quadmaniac @WillyPoP @marioweldinginc @BioWare @Sc0tt @wylde1 @nueymansiyami @oxidized_black @mywifeknowseverythin @BuckBilly @Ajmboy @Stoopidbot1 @DrtyGrlKristin @outlander560 @01 RAPPY 660 @joet82 @wheeler0801 @Sparrows @quadnut20 Sorry if I missed anyone. Looking forward to hearing how everyone is doing. 😎

I was thinking of doing the same on my grizzly. I think the ones below are from ebay. Are you looking at some specifically?

I'd likely go with the original piston and rings only because of cost , but if you can get new at a reasonable price that would be a good option .. You should break the glaze in the bore if you go new piston and rings so that the rings can seat in properly. Measure the bore to see if it is on spec before going that way though. Sorry , I can't make the choice for you. LOL... I'm a cheap retired old fart. Gotta weigh cost / benefit in all I do .

I agree with @davefrombc I had a Kodiak 450 and it was great, fast, got through trails where other quads did not. I moved to a 700 king quad at the time because I wanted to comfort, bigger machine, and independent rear suspension. Today, you can get a lower model kodiak or grizzly and it will have these things. I would go to the dealer and sit on both and get a feel for them. Get a model with the third top light, seems the EPS versions have it. I miss that on my older grizzly and had that on my king quad which it looks like they removed on the king quads...😒

Hard for me to call from afar. Does the cylinder bore look good or is it showing visible wear?. Your photo of the piston looks like the piston and rings are in good shape. Depends on price and budget, but if the cylinder bore, piston and rings all look good, I'd tend to go with them .. any obvious excessive wear or scoring on them and I'd go for a re-bore , new piston and rings since you're that deep into the motor. The outer journal on the rocker shaft looks like it may have been put together without being tightened down properly and the subsequent loose bore allowed the outer journal of the rocker to slap around and slop it out . Can't say why the rocker developed the wavy pattern. Wild guess is it may possibly be because of the slopped out journal allowing the rocker to follow an uneven pattern on the cam. How does the cam look?

Hey hay hay so I’ve recieved the new/used head and to my surprise it’s in very very good condition with no scoring whatsoever. The person that had the head threw in a bunch of additional parts, bolts, cam sensors etc even a rear rack!!!!!! Great vendor tg! Going to tear into this thing tomorrow and god willing have it ready to fire 🔥 on Sunday. It’s been a little while since I tore into an engine like this and I’m looking forward to it. Quick question... the new gaskets, in the past (long time ago) I’ve always used a schilack on each side of the gasket right before I set it in place, good bad? Any recommendations on this anyone ?

the post right above yours has the 87 - 97 big bear service manual here's the owner's manual too.