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Post by goldcoast on Oct 12, 2009 16:38:08 GMT -5
I have the 72cc kit. Can you use the same head with the larger kit or do you need the larger head? I was going to put it on my wildfire.
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Post by skunkwiper on Oct 12, 2009 16:46:01 GMT -5
works fine.
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Post by Enviromoto on Oct 12, 2009 16:57:05 GMT -5
Yes you can use your stock head with no issue.
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Post by goldcoast on Oct 12, 2009 17:10:30 GMT -5
Should I be concearned with crank bearing failure? She runs great now. The reason I ask is this is my only transportation and I average 50-70 miles a day. I have already replaced the crank once after 12kkm. Runs great with all other mods and no parts left over.
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Post by Enviromoto on Oct 12, 2009 18:42:02 GMT -5
Not with a 72cc. As long as you dont go nuts and ride wide open all the time, you should be ok. That and make sure you jet your carburetor appropriately as well.
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Post by goldcoast on Oct 12, 2009 18:56:46 GMT -5
Thanks. I give it a try tomorrow and post what happens.
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Post by goldcoast on Oct 13, 2009 19:55:12 GMT -5
I got her all put back together with the 72cc. She runs great! I'm guessing my top speed is a little over 50mph @8000 RPM. I weigh 195. She climbs up to speed with no slow spots during accelleration. I read in another thread that I should be using a #88 jet or is a #85 good enough? Will I get better performance or is the larger jet to keep from burning a hole in the piston or both?
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Post by Enviromoto on Oct 14, 2009 9:21:42 GMT -5
Do you have a free flow airfilter on it? If so a 88 is mandatory if not you might be able to get by with a 85.
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Post by goldcoast on Oct 14, 2009 14:26:39 GMT -5
Yes I do. Well I guess you could call it that. What I did was I bought a valve cover breather for a car(medium size) cut out the opening to allow more air flow. I left enough of the nipple to attach a piece of the original breather as an adapter. If you cut the piece a little in front of the oil vent tube(approx 2") the little cap fits right back in. This way I don't have to remove the air box. I leave it on as a backup. I guess ordering a 88 is next.
Thanks for the help!
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Post by goldcoast on Oct 14, 2009 17:54:20 GMT -5
OK The 88 has been ordered from enviromoto. I will let the pound know how it turns out!
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Post by goldcoast on Oct 19, 2009 19:13:11 GMT -5
Another question: What types of damage can occur when using a 85 jet instead of a 88 or 90? I really don't want to rebuild it AGAIN..It's too soon.
Thanks
Jim
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Post by Enviromoto on Oct 19, 2009 20:15:39 GMT -5
A 85 will cause a lean condition. A lean condition makes your engine get really hot. When your engine gets hot rings, pistons, bearings, ect, fails.
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Post by goldcoast on Oct 20, 2009 6:33:49 GMT -5
great. I'm sure the jets will help. If not, it looks like it's crank replacement time. My guess is the damage is done. That's what I get for not having other transportation. I had to ride it anyway with too small of a jet. I hope the piston and rings aren't gone. Thanks for your help and prompt response!
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Post by goldcoast on Oct 20, 2009 16:39:14 GMT -5
Sure enough the bearings went! Time to open her up and see what I can salvage. Some times it's like I'm working on Humpty Dumpty!
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Post by goldcoast on Oct 28, 2009 6:19:32 GMT -5
Ok. All back together. New crank,and seals. I was able to reuse gaskets, piston, cylinder. It also fried my performance camshaft  so I went back to the stock part. I found out (SAVE YOUR OLD PARTS!). They definitely come in handy. Thanks for all your help DAWGS! Tomorrow it's time to get my scoot on! ;D Jim |
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so I went back to the stock part. I found out (SAVE YOUR OLD PARTS!). They definitely come in handy. Thanks for all your help DAWGS! Tomorrow it's time to get my scoot on! ;D