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High Performance Bicycle Engine Tips and Motorized Race Bicycles We all want our bicycle engines to push our bikes faster. Get exclusive engine modification tips and suggestions from us. Also check out some of our racing members builds

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  #1  
Old 05-17-2016, 04:55 PM
mike carter 2 mike carter 2 is offline
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Default kings motors gt 80

anyone bought one if so what do yoy think of it
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  #2  
Old 05-18-2016, 10:19 AM
Mikey_ Mikey_ is offline
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Location: GA
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Default Re: kings motors gt 80

I'm looking at this kit too. There seems to be a few discussions in the archives about this motor. One earlier adopter find metal shavings and poor workmanship, other owners seem to like it and have not had any issues. Some users suggest taking it apart and inspecting the engine as a good measure for any purchase.

I wonder if it is possible to get more than 4.5 HP out of it or if it can even get the 4.5 HP that they claim it to have.

Anyway, I hope that you can find the information that you need.
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  #3  
Old 05-18-2016, 10:46 AM
mike carter 2 mike carter 2 is offline
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Default Re: kings motors gt 80

i already intalled kit on bike exaust is crap made new one better but not what it needs has reed valves but no mods to piston seams to pull pretty hard with 36 tooth rear cog ordering sbp chamber and new piston to mod mabey larger carb also
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  #4  
Old 05-18-2016, 12:42 PM
Mikey_ Mikey_ is offline
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Default Re: kings motors gt 80

Do you think that it might be better to just buy a PK80 and source all the parts myself for this engine vs paying someone else for their 'fast' version of this engine?
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  #5  
Old 05-18-2016, 04:32 PM
mike carter 2 mike carter 2 is offline
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Default Re: kings motors gt 80

i wish i had read the revue that you talked about before today now i have to do a tear down to let anyone know if any good runs about 25 30 after 3 tanks fuel run through it climes hills with some assistance on peddles when it get steep i think it will be better after i change jets in carb new chamber modded piston mabey larger carb i dont know yet if can recomend it yet this my second build first was a stock grubee with shaved slant head jetted carb home made exaust went about 35 on flat ground
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  #6  
Old 05-18-2016, 04:40 PM
mike carter 2 mike carter 2 is offline
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Default Re: kings motors gt 80

i realy dont think its built to it full potential
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  #7  
Old 05-18-2016, 04:47 PM
mike carter 2 mike carter 2 is offline
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Default Re: kings motors gt 80

im going to shave the head this weekend so i can let you know if it has any problems in the top end soon
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  #8  
Old 05-20-2016, 02:25 PM
Mikey_ Mikey_ is offline
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Default Re: kings motors gt 80

I'm going to go ahead with this motor and order everything on Monday. If it turns out to be anemic, I will just learn all that I can from the guys here and tune it myself.
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  #9  
Old 05-20-2016, 03:48 PM
mike carter 2 mike carter 2 is offline
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Default Re: kings motors gt 80

i didnt say it was weak pulls my 200 lb ass around pretty good realy needs good exaust and more than likely carb jetted it wants to deisel bad i dont know if its the exaust i made for it or carb jetting i ride it to work daily and have a blast
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  #10  
Old 05-20-2016, 04:01 PM
mike carter 2 mike carter 2 is offline
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Default Re: kings motors gt 80

pulls pretty hard on bottom end wants to deisel at full throttle i think it might do forty or so if and when i get it to stop deiseling
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