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  #21  
Old 09-28-2019, 01:28 AM
solomon solomon is offline
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Well today I worked the head some. Nothing too fancy.
Stock bore. After Honing the p2w was .0015. Still tight. Motor ran prior to teardown.

Flat top piston on its way we will see where the bore sits then.
for now more pics!
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  #22  
Old 09-28-2019, 01:29 AM
solomon solomon is offline
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more pics
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  #23  
Old 09-28-2019, 02:37 PM
solomon solomon is offline
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got the valve springs and the piston today
got the valves lapped
installed the valves with Dual Spring setup

Gonna mic the piston and bore later and see where we are at.
nrracing.com BIG SHOUT OUT - these guys drop shipped my parts FAST!
more picssss
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  #24  
Old 09-28-2019, 02:50 PM
solomon solomon is offline
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okay well i guess later came sooner than later.
mic'd the bore and new flat top piston.

p2w looks good too me!
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  #25  
Old 09-30-2019, 10:55 PM
solomon solomon is offline
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recieved the arc billet rod, gaskets, and 72t sprocket today.

didnt have a 5/16 12pt socket laying around so i will grab one tomorrow. need this to tighten loosen the connecting rod bolts and mic the bearing.

got all 4 tires mounted on the rims a 1 of 4 beads sealed. still need to get the other 3 tires to go. some pics
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  #26  
Old 10-01-2019, 12:30 AM
Mrmonk7663 Mrmonk7663 is offline
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This build is coming together rather quickly. Nice work!
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  #27  
Old 10-01-2019, 01:53 AM
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landuse landuse is offline
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Those rods always look so shiny
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  #28  
Old 10-02-2019, 08:14 PM
solomon solomon is offline
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hey guys. got the block cleaned up. the gas tank is almost ready. the past week and half my brother has been doing electrolysis on the tank with a battery charger,scrap wood,xtra bolt.
the tank was really rough.
here you can see how much the electrolysis has eaten away at the rust in the tank as well as the bolt itself!
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  #29  
Old 10-02-2019, 08:21 PM
solomon solomon is offline
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I tapped the governor hole for a 1/8 npt plug.
I painted the block for a fresh look.
I tapped the oil sensor hole for a1/4 npt plug.
plugs installed.
fitted engine together
piston ring gaps .016/.017"
p2w .002
Made a bearing removal tool last second for the balance shaft
as I decided to not use it last second.
my tool and method was simple and crude/agressive at best.
Valve lash set .006" intake .007" exhaust

Deciding against the stock GX270 carb. thinking of using a small pitbike carb.
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  #30  
Old 10-02-2019, 08:21 PM
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Smart. I haven't thought of doing it like that. Good idea though. (Will use it in the future). [The tank cleaning]
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  #31  
Old 10-03-2019, 05:51 PM
solomon solomon is offline
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my son found some good use out of the old piston...

got the custom intake mocked up today for the 80cc bike carb ill be using.
pull starter on.
valve cover on.
more later
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  #32  
Old 10-04-2019, 12:31 AM
Mrmonk7663 Mrmonk7663 is offline
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Lookin good man.
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