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Going 70cc
Aug 27, 2020 17:39:49 GMT -5
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Post by honeyshark on Aug 27, 2020 17:39:49 GMT -5
So just wanted to get some input... Ncy 70 cc kit and pipe or would i get better power out of the tp black thunder w/ yasani r pipe? Thanks in advance!
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Going 70cc
Aug 27, 2020 17:51:14 GMT -5
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Post by honeyshark on Aug 27, 2020 17:51:14 GMT -5
Forgot to mention this is for a 2008 zuma...
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Post by Zino on Aug 27, 2020 21:07:10 GMT -5
Yasuni R is way better than the ncy pipe Top performance is a notch better than ncy kit
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Going 70cc
Aug 31, 2020 20:20:41 GMT -5
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Post by honeyshark on Aug 31, 2020 20:20:41 GMT -5
So i picked up the r pipe and the athena 70 kit... Came with new reeds and gaskets with head and piston... Anyone have the part numbers for the jets and the new (older version) needle for adjustability (trying to reuse the stock carb for the moment)... Also picked up the side kick stand and 10mm wrist pin bearing... Next is the jets and needle and some hondabond and yamabond and i should be pretty good to go...
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Post by Zino on Aug 31, 2020 21:05:47 GMT -5
The stock carb will work ok with that set up
These are the jets I used tekei main jets 82 14T-14343-41-00 84 main jet 14T-14343-42-00 and a vino pilot jet 5BM-14353-23-00 the 82 or 84 should have you in the right range when you swap in the richer vino pilot jet Some guys get by without the vino jet.
If you cannot get them from bikebandit partzilla etc The mikuni jets fit also vm 11/22 you need jets between 85 and 95 to be safe for tuning jetsrus sells genuine mikuni jets You also can buy knock off mikuni jets from partsforscooters . You also could get some off of amazon
You can adjust the slide with a small washer or put up a request from one of the members for used needle and slide. I have a lot of extra parts for the zuma
Bike bandit has them for 53 dollars for the slide and the needle new right now and they are on back order.
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Going 70cc
Sept 3, 2020 15:24:47 GMT -5
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Post by honeyshark on Sept 3, 2020 15:24:47 GMT -5
So i checked around local for the jets... No dice... Parts ordered from partzilla should be in 1-3 days maybe ill have her up and rolling by Labor day but not holding my breath... For temps can i just use one of those thermal guns to shoot the block or is it better to spend the money for a temp gauge... Figured id throw in the largest jet and work my way down... Kinda excited but also nervous at the same time...when i dig into the cvt ill check to see what previous owner had installed as when i got the bike it came with and extra belt as well as what im guessing is the old co tra spring and 1 red clutch spring... (Guessing it was a three pack and the clutch only has two two shoes) also have a pack of tuning weights from my 139qmb that i might be able to toy around with... Thoughts... Suggestions... Thanks in advance!
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Post by Zino on Sept 3, 2020 17:09:34 GMT -5
protect your investment with a good temp gauge . it will help with tuning and long term health . Trail tec gauges are well worth the money . I would swap on the kit first Break it in with the stock pipe . Your jetting will be close with a 80 and a needle drop down 1 clip rich .
Enjoy it for a few tanks of gas get used to how it takes off and rips around and note the top speed.
Then swap on the pipe swap on the 84 jet and work down. The 84 is probably what you need you might be able to get by with the 82 .
Then you will have to spend time tuning to get the take off so it is close to stock pipe with stiffer clutch springs you will need medium or heavy to get the pipe to spin up in power band before the clutch engages and spins the wheel. You also will need lighter variator weights a range between 5 to 6 grams will provide the best top end and best acceleration .
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Going 70cc
Sept 3, 2020 20:36:03 GMT -5
via mobile
Post by honeyshark on Sept 3, 2020 20:36:03 GMT -5
I really appriciate the heads up and the advice.... Im glad that now i can go ahead and do the bbk and get her "seasoned up" while i wait on a gauge and the jets and pilot to come in... I grabbed a tube of the yamabond type 4 which is what i think is needed for the gasket surfaces. Ive been reading about squish... Is that like using plastiguage and torque it down to spec to see what the clearance is between the mating surfaces?
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df41590
Scoot Enthusiast
Posts: 285
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Post by df41590 on Sept 3, 2020 21:06:21 GMT -5
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Post by honeyshark on Sept 4, 2020 9:20:48 GMT -5
As i opened the packages last night on the go fast goodies i looked over the included directions for the athena kit. It spoke of using tin wire to do the squish. It also was a bit hard to understand as it seemed like the entire set of directions were jist google translated into english. Thinking about getting that trailtech vapor gauge. Seems to have just about everything i would need... Speedo tach block temp odometer and can get the extension part that can have indicator lights installed that can have a low fuel light... Not sure what else one should need to replace the whole handlebar dash board. But when thinking about that... Are the downhill bars more comfortable? Not sure if anyone around me has them and im sure bars are different for e everyone... Again thanks for the forward progress ill include some pictures as i get started in this build!
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Going 70cc
Sept 6, 2020 19:26:34 GMT -5
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Post by honeyshark on Sept 6, 2020 19:26:34 GMT -5
So knocked out the break down... Those c clips are kicking my ass... Gonna pick up c clip installer tomorrow from home depot prob on the am... Not giving up tho... Also saw what they ment about the non adjustable needle on this 2008 is... So i gotta figure that out as well there seems to be a very small spring but i think i have to replace that whole unit to get the adjustability for it...
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Post by Zino on Sept 6, 2020 22:15:15 GMT -5
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df41590
Scoot Enthusiast
Posts: 285
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Post by df41590 on Sept 6, 2020 22:26:30 GMT -5
Solder is softer than straight tin and usually more commonly found and w/ more uses than straight tin. Imagine 99% of the guys on here use solder to check squish. Vapor is a good setup a tachometer and temp sensor make tuning a lot easier/safer. I'm still running stock bars so can't say much on that. The circlips are a royal PITA until you get the hang of it, but will be well worth the aggravation once your ripping around on the 70cc. Here's a video of clip install starts at 1:05 www.youtube.com/watch?v=qpP6WXxLmXI. Should be able to get them in w/ just needle nose pliers and your fingers. Just make 100% sure the gap on the circlip faces the piston's travel (ie 12 or 6 o'clock), and that you stuff rags into the crankcase opening in case it goes flying. Add your scooter year and model to your signature. Not sure what spring you're talking about. The "V" style spring that keeps the needle against the slide?
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Post by honeyshark on Sept 7, 2020 17:40:34 GMT -5
Got the motor put back together and she fired right up... Let her idle of 15 minutes then cut her off... Then took her for a trip around the block never going higher than 1/2 throttle. Plug looks lean so im looking to get my hands the older style needle set that has the clip to adjust it... Posted in the wanted section for that and im still waiting for the larger mains and pilot jet to arrive...
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Post by honeyshark on Sept 8, 2020 10:34:51 GMT -5
So the stock needle assembly on a 2008 zuma cannot be shimmed... Took it out and tried to drive the pin out... Got enoigh of a grab with the pliers but it didnt nudge at all
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