Question -- is this wirth rebuilding or should i scrap it and get entirly new engine kit

DXT

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Jul 11, 2018
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20180711_021745085_iOS.jpg 20180711_021757731_iOS.jpg 20180711_021806756_iOS.jpg 20180711_021856283_iOS.jpg 20180711_021941920_iOS.jpg 20180711_021822431_iOS.jpg 20180711_022036053_iOS.jpg 20180711_022619718_iOS.jpg 20180711_030400221_iOS.jpg Just spent the last couple hours taking a used engine and bike aapart that I got for real cheap and now I know why, but the title says it all just trying to figure out if it would be more cost effective to get a new kit or rebuild this old one.
 

crassius

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Sep 30, 2012
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when a customer has to pay for both parts and labor, I advise he just buy a new motor for $80

even if he can do his own work, some parts cost more separately than they do in a kit, so buying a whole kit to put some spares om the shelf might be better than buying just the motor

these are the things to think about
 
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DXT

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does anybody have a cluse as to what size this engine is

thanks Dan and crassius I was thinking of getting a new kit off ebay with upgraded sprocket, spring tensioner, upgraded carb and reed valve, and expansion exause camber, and some sort off vibration mount. Here are some npictures of the old bike in oragnge and the new bike in black.

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DXT

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yea didn't see that damage when I was looking at buying it, but oh well live and learn.
 

DXT

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Update --- got all put together and on first test ride the chain broke not at the master link master link. But here are some picture while I wait on upgrade parts
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crassius

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Sep 30, 2012
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should be really good - I get those, used to be A80, but with sticker on side they call it superhawk now - sticker peels off OK with a bit of WD40
 

DXT

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Jul 11, 2018
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Got her mounted in but couple of issues
1) engine sits higher now sow now I need either an offset or a short intake --- I am thinking of getting a cnc short intake and continues using old carb.
2) and now the bottom of my old exhaust presses hard to the frame making so that I'm not getting a full seal. --- thinking of getting a VooDoo muffler and installing it
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DXT

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I took her out for a first run had a strange problem it would run only if I had it greater that an ideal I’m thinking it’s not getting enough fuel plus I’m running 50:1 premix
 

DXT

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Update --- changed out exhaust but still no joy, anything below 10 mph it wants to stall. I hope the new carb gets here soon. I hope to have her running by fall.
 
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crassius

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Sep 30, 2012
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I'd run 32:1 - usually when idle screw is all the way in and no idle means it is way too rich and needle needs to get dropped down leaner
 

DXT

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New carb just arrived got her installed, can somebody direct me to a good tuning video
 

Greg58

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That's a CNS style carb with the fuel enrichment instead of a choke, most of the early models had a idle screw and idle air screw. The problem I had with that style carb was the plastic bushing in the intake was not compatible with gasoline, several of the first kits I bought the carb wouldn't stay on after a while. Hopefully that has been corrected. My son in law is still running a cns2 on his, we built that bike in 2011.
 

DXT

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Thank for the info Greg too some close usp I see the ideal screw but looks like ideal air had been plugged, what are the 2 hoses coming out the top?
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