Motorcycle and ATV Cylinder Hone Instructions - Flex-Hone

[greenmonster687]

is the flex hone aluminum oxide ? if so what grit?

[RockyMountainATVMC]

@greenmonster687 - 320 silicone carbide.  Aluminum oxide works great too on nikasil. i worked directly with the manufacturer to get the best one for motorcycles and atv's, and the 320 silicone carbide is what they suggested.

[dh4life100]

ow much do you think this would cost to have done?

[RockyMountainATVMC]

@dh4life100 - it just depends on the shop

[BowHunt1229]

stroke it quickly.

[youlikeguys1]

i'm sorry after reading previous comments i figured out you just used a wd-40 type oil

[youlikeguys1]

what kind of oil did you coat it with to prevent oxidation????

[BowHunt1229]

@youlikeguys1 WD-40

[171apples171]

do you carry this flexhone for KZ1000 street bikes?

[RockyMountainATVMC]

@171apples171 - Yes we do, even though it isn't listed in our specs. It depends on your bore size. Your KZ should be around 72mm. Please double check and refer to the following part list. 68-70mm hone part # is 1284240005, 71-73mm is 1284240016, 74-76mm is 1284240006.

[Sandeep9201]

what is the difference between honing and boring??

boring is when you increase the bore diameter?

honing is just cleaning the sleeve?

right? or wrong?

[RockyMountainATVMC]

@Sandeep9201 - correct

[GrandDanois]

I can see they have different grids, what grid do you recommend for a cast iron cylinder, and for a nicasil plated one?

[RockyMountainATVMC]

@GrandDanois - the manufacturer recomends 320 for both, which is what we stock.

[ImTrickeh]

i have a 65 and the cylinder sleeve has deep scratches, would this work or would i have to get a bigger piston or a new sleeve?

[RockyMountainATVMC]

@ImTrickeh - a hone will take out real light scratches, but nothing significant. The goal is to just remove the glazing. you will need a bore (if the sleeve is borable).

[LORDDis0FFICIAL]

Did you use WD-40 for the light coat of oil ?????

[RockyMountainATVMC]

@LORDDis0FFICIAL - another brand, but yes!

[deerman1212]

Bore size is 83.5 but I'm gettin it bored to 84mm the flex hone says to 83mm

[deerman1212]

I want to save some money and re hone my cylinder myself. I have a yammy warrior 350 and I see you sell vehicle specific flex hones but my cylinder is bored bigger than stock should i still go with the warrior flex hone?

And also is it required to get new rings? My piston shows no damage. And my ring end gaps are in spec.

[RockyMountainATVMC]

@deerman1212 - what is your bore size?

[563873]

I have a 54mm bore and the chart goes from 52-54 or 55-57 what size should i get i heard that you are suppose to get one size bigger

Please Help

[RockyMountainATVMC]

@563873 - the 52-54 is bigger in size than a 54. Go with the 52-54.

[bridgemaniii]

I wanted to buy some flex-hones, but what grit should I buy for standard honing or deburring?

[RockyMountainATVMC]

@bridgemaniii - the 320 grit we sell is perfect.

[bridgemaniii]

@RockyMountainATVMC: Great! Thanks for the quick reply!

[MrNik1001]

What happens if I use cold water?

[RockyMountainATVMC]

@MrNik1001 - Apocalypse possibly, but most likely the cold water won't break down the honing oil as easy:)

[blah5372]

so honing does NOT interfere with my kx125, if i just wanted to buy a new piston and rings? like if i honed it and did everything you did in this video, i wouldnt need to get it replated or anything like that? i could just hone, oil, slap on my bike and ride?

[ch0l0sk8r]

@rockymountainatvmc hey say if i wanted to rebuild my kx250 topend would i need to hone it , what if i just needed new rings what does honeing do thanks,

[RockyMountainATVMC]

@ch0l0sk8r - it depends how the cylinder looks. Honing puts fresh cross-hatch marks in the cylinder which helps seat the rings and keep the cyliner walls lubricated properly.

[razed1022]

Wasn't honing done originaly because old cylinders and rings were cast iron and wouldn't seat? With the metals used in rings & cylinders today wouldnt honing just cause unnecessary wear on cyl wall? reason I ask is I use rotax two strokes on my light aircraft, when I get cylinders back from A&P mechanic they are mirror like smooth w/out a single scratch. My compression stays around 140-145.

[RockyMountainATVMC]

@razed1022 - I don't know about airplanes, but OE nikasil plated cylinders (and steel cylinders) come honed from the factory. The factorys also recomend light honing to remove any polished spots.

[jamie123dog]

@RockyMountainATVMC Thanks for the reply

[jamie123dog]

@razed1022 - My question is why use warm water to clean the cylinder out of honing oil when oil and water don't get along? Why not use mineral spirits or parts washer solution to cut threw the oil better ?

Thanks

[RockyMountainATVMC]

@jamie123dog - you can certainly do that too (warm water with dish soap will clean out the hone oil as well).

[boaterbil]

@razed1022 they could be chrome plated cyls. they do not require glazebreaking

[RockyMountainATVMC]

@boaterbil - Refer to the manual

[RockyMountainATVMC]

@PuffBongsAllDay - are you getting fuel? Spark? Are you sure you have the piston in the right way? i would double check everything.

[andre1995ish]

im doing the top end for the first time inthis little sx65 i bought the cylinder is a little bit glazed but seems fine can i just rinse in out

[RockyMountainATVMC]

@andre1995ish - you want to take the glaze out and have the light scratches from the hone. This will help the new rings seat and allow the cylinder wall to hold lubrication better. If nothing else, use a scotchbright pad to lightly scuff it up (cross-hatch like the hone leaves).

[vagelis17y]

why should i hone my cylinder?..

[RockyMountainATVMC]

@vagelis17y - I think the video tells you. listen again.

[vagelis17y]

@RockyMountainATVMC

Ok my English are not good. That's why i didn't understand... Sorry...

[RockyMountainATVMC]

@PuffBongsAllDay - It sounds a little wore out. I am sure it is causing loss of performance. Time to send the cylinder to LA sleeve.

[RcRacer8]

So do cylinders have to have a glaze or seal, or how you finished cylinder will be fine? Does it make a difference in power between the two?

[tin510]

After doing a top end would it be best to hone the cylinder?

[RockyMountainATVMC]

@PuffBongsAllDay - time to pull it apart and rebuild!

[babisbabou]

@RockyMountainATVMC i have a kawasaki D tracker 300cc and the engine is stack. The problem is that the engine worked a lot of time with out oil... Will flexhone help me rebuild the engine? or do i have to sent it to a workshop for repair? If so where can i buy flexhone from? i live in Europe-Greece!

[qwikyking]

do you need to hone a cylinder if its brand new? with brand new piston? or is there anything you have to do to prepare brand new cylinders? doing a cylinder/piston/head replacement on a ktm 450

[RockyMountainATVMC]

@qwikyking - a new cylinder will already be honed and ready to go.

[Browndemolitia]

wont the shavings get stuck in the ports?

[RockyMountainATVMC]

@Browndemolitia - The hone won't take off "shavings", but tiny gritty particles from the hone certainly could fall in ports (2-strokes). That is why you wash it out when you are done.

[mcmailo]

this doesn't ruin the nikasil?

[RockyMountainATVMC]

@mcmailo - no it does not. If you ran the hone long enough in there it could.

[motabikeboy]

thats a big cylinder? what size barrel is it? and 2 stroke i am guessing

[RockyMountainATVMC]

@motabikeboy - it is a cylinder from a KLR650 (fourstroke). It is somewhere around a 90mm bore.

[motabikeboy]

@RockyMountainATVMC

oh OK. thats a bloody big cylinder, i am surprised. and yeah i knew it was going to be something substantially bigger than 500cc's.

[rmatvmcproducts]

@motabikeboy - it is big, but the bore size is actually close to most modern 450cc motocross bike bores (they just have shorter strokes). we sell several different hone sizes to fit just abut any bike out there.

[Xx11HaloGuy11xX]

Is this required to do when you do a top end rebuild? Also the oil you sprayed to prevent oxidation is that just WD40?

[RockyMountainATVMC]

@Xx11HaloGuy11xX - it is a special oil for honing. It is thicker than WD40.

[krstndevore]

@RockyMountainATVMC Have a question I am rebuilding my 03 banshee I would like to bore it 30 over but it worry's me that if I do that it would create more probloms for me like (Over heating) (Faster clutch wear)and trans) And also wondering if I will have to get an oversized head for the new bore I would really like to upgrade the power I just want to know how to do it properly without causing probloms

[crazygondo113]

when you hone the cylinder out, does this mean you have to get a larger piston and or rings aswell?

[RockyMountainATVMC]

@crazygondo113 - Not if it is done right. You want to use a hone like the "Flex-hone" that barely scratches the surface. The intent is to "deglaze" and put the crosshatch marks in the cylinder, not to remove any material from the bore.

[jshepard74]

How would I fix scratches in the cylinder

[RockyMountainATVMC]

@jshepard74 - unless it is a very light scratch, you need to have the cylinder bored or re-coated (depending on the type of cylinder you have). LA Sleeve is a good place to send your cylinder.

[konstantinos1031]

Hi i have a question about FLEX-HONE, In like motorcycles CRF/YZF/LTR ect.. more would be adequate 1.FLEX-HONE/MOLY? or 2.FLEX-HONE/Chromium?

And congratulations for all videos!!!

[redrider187x]

Hi I have an important question, Im sending my atv Cylinders out to have them Bored then they are going to return them to me so i can put a new Piston Kit in. They didnt say anything about Honing the cylinders after boring them? should i ask them to Hone them too? I thought once they bored my cylinders and sent them back with a Piston kit i would be good to go for installation? I appreciate your time.

[RockyMountainATVMC]

@redrider187x - any shop that bores cyclinders should know what they are doing. i am sure they will hone it. i hope you are sending the new pistons too. The cylinder has to be bored to the piston. If the shop doesn't know that, you should send it somewhere else.

[redrider187x]

@RockyMountainATVMC Im sending the cylinders to the same shop that im Buying my piston kit from so there gonna just tell me what size pistons there sending after they Bore it. Thanks for the quick reply and Your video's are very informative. They have helped me out a TON! Thanks again!

[bigdogsdog]

would iced tea be a good lubricant for honing?

[RockyMountainATVMC]

@bigdogsdog - Ummmmm, no.

[bigdogsdog]

i Know, i was just bustin your johnson.

[polishcuz]

is Cylinder Hone important when doing the top end rebuild? sorry for asking a dum question but it is my first time doing something like this.

[RockyMountainATVMC]

@polishcuz - It is important your cylinder has good cross-hatch scratches so the rings seat properly. If your cyclinder looks a lttler worn with polished spots or glazing, then yes the hone is important. Refer to your manual for inspection and hone instructions.

[1993TMAXX]

Hi there! I got a question. When u apply the light coat of oil at the end of honing your cylinder, do you wipe off the oil or leave it there? Thanks for your great videos!

[RockyMountainATVMC]

@1993TMAXX - Thanks. i will usually wipe it off and re-apply some fresh WD-40 before installing the cylinder.

[1993TMAXX]

Alright! Thanks alot! Your videos are the best and very helpfull! ***** 5 stars!

[mxchamps]

Awesome video. I am going to buy one of those.

[Bmac2812]

Can you use this for an electro plated cylinder?

[robertgisthebest]

@Bmac2812 Yes you can, he said in the video.

[RockyMountainATVMC]

@Bmac2812 - I supose it depends on the material used. Nikasil - yes.

[CR125MANIAC]

hey guys i have a 2002 kx 125 my cylinder is ever so slightly scored on one side and it wears my rings down within 2 hours of me breakin it in with new rings n then wont run untill i replace with new rings is there anyway i can resolve this issue without having to fork out for a resleeve or bore thanks ben

[RockyMountainATVMC]

@CR125MANIAC - if it is wearing out the rings that fast, I would suspect it is scored more than "ever so slightly". Either way, you could try a hone; if that won't work, you need a new sleeve or new nikasil plating.

[TheTrapjaw]

Very good video thanks.

Muy buen video gracias...saludos desde Argentina.

[Excomunicater]

Yay for the flex hone! :D Thanks for the vid.

And I have a question. Have you thought about doing a video on rear shock service/rebuilds, or would that be too dangerous a task for the home mechanic? The Clymers manuals don't seem too keen in helping with that, and Information on how to do that would be extremely helpful! Thanks!

[pixuma]

Shock rebuilds are fairly easy, those clam shit manuals suck

[RockyMountainATVMC]

@Excomunicater - yes. One of these days I will get around to doing it.

[Excomunicater]

Sweet! That would be awesome! I have a Cr500 and Kx250, and both need a rebuild I think. haha Thanks a bunch! Your videos are very well done and extremely helpful! Keep up the good work!

[braaup]

How much would this run you?

[RockyMountainATVMC]

@braaup - it depends on the bike (bore size). Check our website.  use kyword search "flex hone".

[braaup]

I use your site all the time! I love it! Great site! Very useful!

[VituMV]

makita just like mine, the best

[mrhyde7]

gggggggggreat vid!!!!!!!!!

keep it up!!!