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Post by woodini on Aug 28, 2021 0:25:16 GMT -5
Plopcorn 🍿
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Post by rjwittmann on Aug 28, 2021 17:17:48 GMT -5
Did some more cvt tuning today. Gained a few more mph. Topped out at 51.32 mph. Went lighter on the rollers 7.5 and a 1500 rpm contra spring.
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Post by ghostaroni on Aug 28, 2021 19:11:02 GMT -5
I am withdrawing my stock airbox recommendation. polinis RIP with the foam filter. stock box couldnt resonate enough for me.
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Post by hippo008 on Aug 29, 2021 22:13:56 GMT -5
Roughhouses are on the come up around here. Cool to see for sure. Whats the pipe on this baby?
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Post by rjwittmann on Aug 31, 2021 14:01:00 GMT -5
It’s a Polini Team4 exhaust. It’s arriving tomorrow from fedex.😁😁😁😁
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Post by rjwittmann on Sept 1, 2021 12:34:44 GMT -5
Polini Exhaust on😁😁😁😁 just had to make only one extra hole on the mounting bracket. Other than that it bolted right up.
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Post by woodini on Sept 1, 2021 13:25:27 GMT -5
That looks tits, cool bike!🤙🏽
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Post by rjwittmann on Sept 1, 2021 15:38:22 GMT -5
Ok. With the stock airbox left on for now what should I change the main jet to? I was running 86 with the stock pipe. Now the scooter is bogging when I give it throttle with the new Polini team 4 pipe. Still running the stock 15mm carb.
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Post by Zino on Sept 1, 2021 16:41:02 GMT -5
Have you got a 90 to 95 jet to feed the beast.
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Post by rjwittmann on Sept 1, 2021 17:45:05 GMT -5
Think I just soft seized my new Polini cylinder 😢😢😢😢 I ended up putting a 96 jet in and thought it was running great. Went out for a ride and running at 62mph the engine just stopped. Let it cool down and was able to get it started again and very slowly drove it home. I used my temp gun at the exhaust flange it read 425 degrees 😱. Think I ruined the motor? ?
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Post by rjwittmann on Sept 1, 2021 17:54:01 GMT -5
Here’s the plug. It looks ok as far as color. Anyone’s thoughts?
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Post by rjwittmann on Sept 1, 2021 18:23:11 GMT -5
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Post by repherence2 on Sept 1, 2021 18:30:58 GMT -5
**edit. Just saw you post of the bore inspection.
You should inspect the cylinder and piston. Soft seizes can transfer aluminum from the piston to the cast iron walls of the bore. It will compromise your rings and over time, your compression will get lower.
You can pull the pipe off and do an initial inspection on the piston. If you can see linear lines/gouges on the sides of the piston, most likely there is aluminum on the bore walls. You can do that prior to unclamping the head from the bore.
--get yourself a temp gauge to protect your investment.
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Post by repherence2 on Sept 1, 2021 18:38:46 GMT -5
Ok, I can work with that. Looks like Zino is going to be my new best friend for the rest of this build 😉😁 Zino is every new tuner's best friend. He has a wealth of knowledge and experience.
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Post by Zino on Sept 1, 2021 19:04:03 GMT -5
looks like a 4 corner seize main jet to small is usually the problem
I think you caught it in time . The bore looks pretty good . If you can t feel the scratches with your fingernail you are in real good shape . A Little EZ off oven cleaner sprayed on there and the aluminum will just dissolve wash out well with dish soap and water and dry well Then use a scotch brite pad to scuff up the bore .
Are the piston rings moving freely your in good shape
As far as piston you could wash that up with dish soap and water and clean it up with a scotch brite pad .
reassemble check compression if you want or just fire it up
The stock carb probably cant keep up with your rpms/power you are pushing out with that pipe and kit . A 17.5 to 19mm would be big enough.
Do you have a temp gauge ?
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