Father Son 75 CB200T Rise From the Ruins

simo said:
How much compression are you expecting to lose with the lower dome?
Are you going to lose the base gasket?
I'm really looking forward to the next dyno results
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we are going to machine the top of the piston for better squish. We will go to a thinner cu base gasket and will calculate our compression to see where we are...we have our mold and our cc'd from our prior calculations...may need to weld head up to a bathtub shape ;)


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Perfectly legal in Uganda as long as it' not worn by a guy.

Looks just like the one sitting on the shelf in the shop. Only about 4 bikes left to get to that project.
 
teazer said:
Perfectly legal in Uganda as long as it' not worn by a guy.

Looks just like the one sitting on the shelf in the shop. Only about 4 bikes left to get to that project.
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thanks Teazer for the tip...seeing is believing...


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Between the two sides? No idea but the primary drive side is totally different to the 160/175 cranks.

Honda don't usually spline them where the two halves connect to each other.
 
teazer said:
Between the two sides? No idea but the primary drive side is totally different to the 160/175 cranks.

Honda don't usually spline them where the two halves connect to each other.
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just wondering how involved a rephase would be


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Instead of spitting the cranks and rephasing
Would there be any advantage by rewelding and grinding the cam to open both intakes / then exhaust simultaneously? Effectively turning it into a 4s twin valve 200cc single?
 
Texasstar said:
we are going to machine the top of the piston for better squish. We will go to a thinner cu base gasket and will calculate our compression to see where we are...we have our mold and our cc'd from our prior calculations...may need to weld head up to a bathtub shape ;)


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Click to expand...

Would a 175 head work better since it's already designed for a lower crown?
 
No splines to worry about. Just press it apart and press it back together again how you want it phased and then get Megacycle to grind a cam to match. Ask me how I know... :)
 
simo said:
Is the only reason for rephasing to address case venting?
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it is my understanding that rephasing helps with the harmonics/resonance issues at high rpm? Also we have been told that for top speed a rephased crank will help. We won't know unless we dyno that is our new motto ;)


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Hansen bushes their billet aluminum cranks. I can see why we needed the 13mm pins oh wise one.
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Sent from my iPad using Tapatalk looks like a mm on each side :)
 
Carillo billet STEEL rods with lightened and polished crank wheels. Why do they polish them? Because when a motor is running there's a ton of oil wrapped around the crank. Chamfer it to reduce flywheel effect and olish to shed oil all add up to a motor that spins up faster. Not so necessary for LSR but useful on short circuits.
 
What is the suggested baking time for cylinder sleeve removal
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Never mind it took less than 15 minutes just place the jug on the rack with right side up and voila now we know what can happen at 450 degrees ;)
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