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Post by chanito on Oct 6, 2005 19:07:49 GMT -5
 OK back to the topic, the reason i just give up on this is because the reason i look into this big bore kit in the beginning was to get more torque and power out of the engine, so i called some friends and got Wiseco to look into this (every other manufacturer laugh at us), there is some reasons the piston and rings needs are different in an air cooled engine as oppose to a water cooled one, tighter clearances been one of them, anyway i tried to get a kit that would cost us less than two hundred dollars, a good machine shop would charge about 30-50 dollars for the re boring, if you take your engine to a pro 200-300 seems like a good estimate for the engine rebuilt, so silly me i thought every one would jump at the opportunity to have about 1 more hp and an engine with enough punch to push past the 8k limiter on a flat road for 500 dollars, but it seems like the needs of every one are so different nobody wants to compromise, but, just because i have enough experience i will say YOU DO NOT NEED BIGGER VALVES WITH A 58CC and adding a HO cam is a worthy add at the same time as the boring but not a necessity, A 4 valve head will not give us more top end but a very SWEET mid range. If you want to go full out, you will need to heavily modify the intake track, that involve cutting the intake elbow, weld some aluminum in the head and machine a new intake track, or add port fuel injection, obviously the last is the better option and we might get to that later, Abe/Jason is a very capable tech and has already a shop, why has he not done this earlier is beyond me, maybe he was expecting the Japanese people to come up with a kit, since this kit is not a bolt on, the market over there is limited, not many Japanese kids have a garage where they can take apart an engine, anyway this is already longer than it should be, so that's is 
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Post by lilruck on Oct 6, 2005 21:30:35 GMT -5
I want the 58cc 2valve piston.
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chnk8
n00b Ruckster
Posts: 7
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Post by chnk8 on Oct 6, 2005 23:16:52 GMT -5
www.atlasgrouppk.com/aeil/pistons.htm heres a manufacturer i found for the CD 70 parts, dunno where there located, again, have to talk to my bike shop, see if i can get one of those 42 mm rings. and chnk8, i go by km/h to, and i dun care how much i gotta spend(keep it below the big ruck at 7K, still got about 5K to play with) i wanna see the look on ppls faces when i go zippin by em on my little ruck. SOO much better than the Vino, step down in power, step up in cool cruising ability. i'm not disagreing there |
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ZoomZoom
Ruckster
'05 Ruckus, '97 Polaris 400L 4X4
Posts: 251
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Post by ZoomZoom on Oct 6, 2005 23:19:59 GMT -5
I'm interested in as plain of an upgrade as possible and I'd be happy with just an oversize piston with a proper head gasket. Then once I get other parts such as the cam I could proceed with the upgrade. I'm not afraid of working on engines, always have, even rebuilt a couple, so it's no big deal to me.
Love getting my tools dirty. ;D
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kzuckus
Junior Ruckster
"Look, Sir, Droids."
Posts: 83
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Post by kzuckus on Oct 8, 2005 10:43:16 GMT -5
I would be happy with your conversion, less dinkering with the engine tune. If others want something else let them go that way. I would be extremely pleased with 45-47mph.
I only have my Ruck to ride, no car anymore, but with the weather here in Phoenix, who cares?
You go Chanito!
Now if I can dig up some cash. Hmmmm...what can I sell?
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Post by Backlater on Oct 9, 2005 14:14:17 GMT -5
???My 2 cents With some of the higher milage guys and we will be there later too , you would think that Honda would have thought of over size pistons and such or are they just going to put out a resleeve? Count me in if the piston idea ever pans out , I would like to keep my four stroke and not go to a 2 stroke as a last resort .  |
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Post by chanito on Oct 9, 2005 16:28:10 GMT -5
38mm is actually the oversize piston, stock they are 37.80 mm, so as you see it will not be much of a difference . I might go back to this piston idea, as i still think is a better option to the engine swap
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Post by Dandy Dan on Oct 13, 2005 6:58:20 GMT -5
I had my engine apart this weekend and I've been working on it solid for the past couple days (replacing the headgasket, cleaning everything super clean which is hard after 23,000km, torquing everything properly etc.) which is why I haven't been on for a few days.
Anyways, what I wanted to say was that I measured the cylinder sleeve while I had it apart and I measured it at 6.8mm thick which is significantly less than the 8-8.5 I had estimated it at. With that in mind and considering the needs of everyone on this board I agree that a 41mm (58cc) is the way to go. Stock, our pistons are 37.785 mm in diameter which gives us a displacement of 49.4cc. A 41.0 mm piston would increase that by 8.75cc to 58.15cc which is a 17.5% increase in displacement.
My uneducated guess is that to go much bigger could involve some risk so 41mm would offer an ideal compromise between power, reliability and simplicity.
Put me down for vote # 7.
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Post by chanito on Oct 14, 2005 16:10:33 GMT -5
We need to take a decision on this, if we can get twenty potential customers for the piston i am willing to fork the money to have them made, but if not then that's it
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Post by Dandy Dan on Oct 14, 2005 19:21:21 GMT -5
We should talk to the totalruckus.com guys because I'm sure there's a bunch on there that would be interested.
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Post by timberwolfmadcat on Oct 14, 2005 20:28:10 GMT -5
i gues id be down with 58 some cc's, wanted more, but safety first
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Post by lilruck on Oct 14, 2005 21:31:18 GMT -5
I'll take a piston and gasket for it too please.
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ZoomZoom
Ruckster
'05 Ruckus, '97 Polaris 400L 4X4
Posts: 251
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Post by ZoomZoom on Oct 14, 2005 23:36:34 GMT -5
You know already of course that I'm in for the piston/headgasket deal.  |
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Post by chanito on Oct 15, 2005 12:26:35 GMT -5
Last time i asked them if they were still interested in just going 58cc, they totally ignore me Not cool enough, i guess
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Post by Dandy Dan on Oct 15, 2005 14:46:44 GMT -5
hmm....maybe I'll get over there a smack them around.
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Post by timberwolfmadcat on Oct 17, 2005 19:59:02 GMT -5
quick ?, how much would it be to get the 4 valve conversion done, parts are how much, and how many hours of labour are we talking
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Post by chanito on Oct 17, 2005 20:41:19 GMT -5
i have no idea how much a complete 4 valve head is, but more than likely i can not afford it
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Post by Dandy Dan on Oct 18, 2005 6:48:58 GMT -5
A very rough guess based upon how much I know these parts cost in the US with a bit more factored in for shipping and more just cuz it'll be more gives me about 300-400$US for the parts and then you could install that in an afternoon yourself if you have the shop manual or a shop might take 4-5 hours at 40-70$/hr so another 160$ to 350$. Just my guess....
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Post by SpoonKiller on Oct 18, 2005 10:00:44 GMT -5
Hey guys don't forget to also post this on urbanscootin.com, no reason why this wouldn't also work in the Mets.
;D
I think you have plenty of people interested, but it's gonna be hard to get any real definite buys until you get a working test platform. It's a gamble, but I think it's only a matter of time before somebody comes out with a kit, and when they do they should be able to recoup the development cost and then some. I hope it's you cause I know from experience that you do pretty good work!
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Post by chanito on Oct 18, 2005 17:38:02 GMT -5
:)Thanks Spoon i did not think about the metros, and i still think those guys will be scare of messing with the motor but i will post there too, i just hope if i do this i will not fall flat on my face |
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