The cylinder on my old three wheeler honda 200 is glazed badly, when buying a hone what grit stone do i need 2 or three leg etc!
cuda.340,
Apr 20, 8:01pm
bubble hones are good
rob_man,
Apr 20, 8:04pm
I thought you were getting Harawira to take out your windows when I read the heading. You can remove the glaze by hand with a bit of 80 grit and kero in a pinch or you can hire a hone with coarse to fine stones. If the rings are chrome moly you could even go to 36 grit to make the rings bed in properly.
Our honing stones at work we do a 200grit. Then a 300grit. The. A final hone with a 400-450 grit. (that's on the machine hone) with the flexi-hone its a 350 I think. So your best bet is get some 200 and 400 wet and dry and try make a cross hatch pattern about 30deg. Start with course and go to the fine one. Kero would be a good honing oil.
frank1,
Apr 20, 9:24pm
U need 220 grit hone, any courserwill wear rings,and u will have to replace again. Brasso--yeah whatever
intrade,
Apr 21, 6:18am
you better get a micrometer and mesure how egg shaped the bore is already. because a hone wont change the shape of the boor and new rings are not egg shaped so it soon pisses past the rings if it was not round any more .
intrade,
Apr 21, 6:23am
Before you can even begin to set your ring gaps, the cylinder bores must be perfectly round. If the bores are distorted or egg-shaped, no amount of ring fitting will get them to seal.
Hey Noodle I'm pretty much thinking what intrade is saying. Given you are already paying for a gesket set and a set of rings why not forget the glazing tool and buy a .5 over piston -or 1.0 oversize piston and ring kit. I bet the kit is about what you'll pay for a honethen your only extra expense is a rebore. Maybee $120 But the effect is going to be a much "newer' motor than just bunging rings in and for you no more real effort.
panicky,
Apr 21, 6:50am
use brake fluid as honing oil
panicky,
Apr 21, 6:51am
I think you mean bottle hone or bottle brush hone
sr2,
Apr 21, 6:56am
Are you sure it isn't a nikasil bore!
noodle34,
Apr 21, 7:09am
This has already been bored oversize not long ago, oversized piston new rings, all is sweet apart from the bore is glazed up and it started to burn oil real bad
motorboy2011,
Apr 21, 7:11am
not on a dirty old honda 4 stroke
sr2,
Apr 21, 7:27am
Could be wrong butI thought the XR200 ended up with a Nikasil bore!
kazbanz,
Apr 21, 7:50am
hey mon--unless its had a retrofit engine fitted this is a honda trike The trikes are waay pre nikasil
Noodle--fairy nuff mate. Um but if its just had a bore and the bores glazed --hmm summats not right You are using mineral oil whist doing the run in arent ya ! My first thought was you are using a good quality synthetic and the rings aint bedding in.
floscey,
Apr 21, 7:57am
brasso indeed does work , if you have put new rings into a bore and the bore has been bore washed by too much fuel. Seen it done on a 308 holden.
rob_man,
Apr 21, 8:23am
Moly rings and cast iron bores will sometimes give this problem, the bore will glaze before the rings are bedded in due to the disparity in the hardness of the two materials. The cure is to do what I said earlier, get in there with some very coarse sandpaper. The deeper scratches will take longer to smoothe over and give the rings a chance to bed in properly. Assuming the rings are chrome moly.
realtrader1,
Apr 21, 10:53am
I remember, back in the day the thing was to assemble holdens eg 179's pistons dry to give a good scrape and bed in does that still apply with other engines too!
intrade,
Apr 21, 11:07am
i just use flexy hone with whatsname kereosene to keep the hone stone lubed . same is used on top of engine blocks when you manually use a hone brick stone befor fitting headgasket I dont see why it would glaze when it was correctly rebuilt not long.
rob_man,
Apr 21, 12:43pm
Back in the 70s and 80s when chrome moly rings began appearing in street cars and motorcycles there were a few carmakers who struck this problem in new cars for the reasons outlined in my earlier posts. A directive was sent to dealers for at least one manufacturer with the 36 grit sanding of the bore as the best solution. I think it may have been Mitsubishi, make of that what you will.
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