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Post by fugaziiv on Jun 25, 2020 16:16:23 GMT -5
Alright, so it's been a while since I've updated this but I finally had a chance to get the bike (mostly) back together. It needed some TLC. Now it's time to put it through its paces to see what we've created. It's the end of the day, so here's a picture, build list to follow tomorrow. Matt
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Post by Zino on Jun 25, 2020 18:03:51 GMT -5
Do you guys race the around the inside of the warehouse. Just dont tell the boss
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Post by fugaziiv on Jun 26, 2020 8:48:53 GMT -5
Do you guys race the around the inside of the warehouse. Just dont tell the boss lol, yes, we've got an electric Razor go-kart for that, and I'm keeping an eye out for a second one at a reasonable price. We don't talk about it much here, but Razor electric parts are a big part of our business as well. Sometimes, we get too rad though. A couple of weeks ago on a Saturday I came around a corner too hot and plowed into a stack of tires. It was awesome. Also, I'm the boss. Matt
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Post by aeroxbud on Jun 26, 2020 13:34:40 GMT -5
I bet you go home and say "such a hard day at work today" Too. 😁
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Post by fugaziiv on Jun 26, 2020 13:39:43 GMT -5
Okay, build list. Here's what we ended up putting into this bike. We're still in the break in, so I don't have performance yet, but when I do, I'll post. I'm not going to include the basic TLC stuff, like brake master cylinders, hoses and stuff like that, because that's not upgrades on the application. Suffice to say there was some long needed maintenance to make the bike a runner. This didn't end up being as low cost as I was originally shooting for, but I'm reasonably happy with the result for the money. I did learn some stuff, like we didn't have a matching Polini clutch bell to the clutch I installed, so now that part is on order to be added to our stock. Here we go: Polini Team 3 Exhaust www.partsforscooters.com/146-52-Polini-Exhaust-Minarelli-HorizontalPolini 3G Maxi-Speed Clutch www.partsforscooters.com/146-30-Polini-3G-Maxi-Speed-Clutch-107mmMinarelli Clutch Bell 107mm www.partsforscooters.com/161-224-107mm-Minarelli-Clutch-BellSSP-G Torque Spring 1500 www.partsforscooters.com/169-130_Minarelli_torque_springsSSP-G Minarelli Wrist Pin Bearing 10mm www.partsforscooters.com/105-78-SSP-G-Minarelli-Wrist-Pin-Bearing-10mm-12mmNaraku Minarelli 70cc cylinder kit www.partsforscooters.com/137-26-Naraku-Cylinder-Kit-MinarelliDriven racing Waffle Grips, Orange www.partsforscooters.com/109-26_Driven_Full_Waffle_GripsBanJing Performance Throttle Assembly www.partsforscooters.com/169-489-Ban-Jing-Quick-ThrottleNaraku Black Edition PHBG 19mm carb www.partsforscooters.com/137-39-Naraku-19mm-Black-CarburetorSSP-G Choke Cable www.partsforscooters.com/114-47-SSP-G-Choke-CableSSP-G 69" Throttle Cable www.partsforscooters.com/240-34-SSP-G-Throttle-Cable-PWKSSP-G Minarelli Variator 15 spline 4g/weights www.partsforscooters.com/169-140_minarelli_90cc_variatorAdd it all up and it's about a $620 bill for what I would deem a decent quality street build. I could have spent less, and I also could have spent a whole lot more. Not included in that cost is the rear shock and tires, which I do think make a big difference for the better in the way this bike rides. Here they are: Forsa Performance shock 280mm www.partsforscooters.com/169-208_Performance_Racing_ShockVee Rubber 120/90-10 VRM-133 Front www.partsforscooters.com/154-268-Vee-Rubber-VRM-133Vee Rubber 130/90-10 VRM-133 Rear www.partsforscooters.com/154-269-Vee-Rubber-VRM-133And at the moment, that's it. We haven't played with weights yet as the 4g ones that come with the variator seem about right so far, jetting seems to be pretty good on the Naraku Carb as installed right out of the box... and so we're gonna break it in and get an idea of what all of this does. Starts first kick, idles nice and pegs the speedo in our parking lot, so I'm looking forward to riding it. On the radar is a new CHT gauge from KOSO which we're adding to inventory when it arrives, and this sweet big rotor kit when we get it back into stock in a few weeks, and maybe a steel braided front line to go with it. www.partsforscooters.com/169-528-NHRC-Yamaha-Zuma-220mm-RotorAs is the nature for all of my personal bikes, it'll look just a little rough and ratty on top. I like to try and fly under the radar. Matt
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Post by fugaziiv on Jun 26, 2020 13:41:54 GMT -5
I bet you go home and say "such a hard day at work today" Too. 😁 Some days I spend the whole day pulling orders, unloading trucks or fixing toilets and it really is a hard day. It ain't all glamorous... well, none of it is really, but I do like it. Matt
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Post by fugaziiv on Jul 2, 2020 15:04:12 GMT -5
Quick update: So, currently breaking in and tuning, but as it stands right now it's a low 50's bike running with a lot of oil in the fuel for break in. Stock gears and stock airbox. Little bit slow right off the line, but hoo boy hold on as it spins up, cause we're goin' for a ride when she comes on the pipe.
I still don't have a CHT for tach, so I'm working on those, and I found a few extra little things that I need/want to fix to make it a no brainer daily, but it's a good rider so far.
Matt
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Post by 90GTVert on Jul 2, 2020 16:11:34 GMT -5
Did you guys check squish clearance, compression (calculated or cranking) or port durations by any chance? Just curious how that Naraku turns out without a matching head. Seems like it would have to leave something on the table to save the money of a matched head. It's the sort of thing that I always advise against if people ask me about it. Still, gotta be better than the bottom tier full kit setups that are near it in price. There's nothing like having piston slap with a brand new kit from wide clearance and looking at casting flaws everywhere.
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Post by willie on Jul 5, 2020 10:47:51 GMT -5
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Post by fugaziiv on Jul 5, 2020 19:36:09 GMT -5
We went with the Polini as it is the 100% replacement belt for the 05' Horizontal Zuma. Matt
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Post by fugaziiv on Jul 5, 2020 19:54:00 GMT -5
Did you guys check squish clearance, compression (calculated or cranking) or port durations by any chance? Just curious how that Naraku turns out without a matching head. Seems like it would have to leave something on the table to save the money of a matched head. It's the sort of thing that I always advise against if people ask me about it. Still, gotta be better than the bottom tier full kit setups that are near it in price. There's nothing like having piston slap with a brand new kit from wide clearance and looking at casting flaws everywhere. Honestly, I didn't check anything. I installed it the same way that 90% of our customers would as I wanted to see what we're working with out of the box here, so I just bolted it up. I didn't even chamfer the ports. While I absolutely think it leaves performance on the table compared to the Athena and Polini kits we sell, for a $71 it's really quite nice. It looks nice and has good tolerances. For the low cost of entry, it blows away bottom tier kits for sure. After I fully break in this kit, test compression and get some of the additional testing features set up on this bike (and fix some more things on the Zuma to get it to reliable-ish daily status), I'll really start digging into the different kits and A/B/C test them as bolt ups so see what we're really working with in this application. I'mma need a dyno if I keep on going down this road. Matt
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Post by YamahaRick on Jan 17, 2021 19:48:47 GMT -5
dexameth, fugazliv, and others ... thanks for this thread. I learned a lot.
I recently acquired a few Zumas, one that will need a down to bare frame rebuild (12K of use in IN). This thread gave me a lot of insight on what I will have to look forward to.
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Post by fugaziiv on Jan 18, 2021 9:28:12 GMT -5
So the Naraku kit with the SSP-G variator and stock gears topped out at 52mph, with a Polini Variator 54mph, both with the Polini Team 3 Pipe spinning to roughly 11k. Both with the carb running a bit rich, even fouled a plug. It was an absolute dog off the line after it warmed up, which usually means the driven pulley needs a rebuild. I learned Zuma's don't shift well if that gets all gummed up... and I took it apart and sure enough it was a mess in there.
what this really revealed is that the bike however really needed some additional TLC. The fuel sender was shot, the oil tanks and the hose connecting the two were in really bad shape and other bits and bobs to bring it back up to snuff for daily duty.
So I figured while I have it apart, I'll install the Polini Corsa kit, Polini reed kit, Polini performance sheave and Polini gears as well and see if I can get this thing to be a bit more spritely off the line and possibly closer to 60. I guess it's going to be a Full Polini street build at this point. Not that I personally need it to do 60 for my commute, but it'd be nice. I'm waiting to press some gears at the moment when I get a chance, but for now they're sitting on my desk.
Matt
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Post by aeroxbud on Jan 18, 2021 9:38:58 GMT -5
Will be interesting to see the difference. It should be quite noticeable.
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Post by Lucass2T on Jan 18, 2021 10:20:21 GMT -5
I'll install the Polini Corsa kit, Polini reed kit, Polini performance sheave and Polini gears as well and see if I can get this thing to be a bit more spritely off the line and possibly closer to 60. I guess it's going to be a Full Polini street build at this point. Not that I personally need it to do 60 for my commute, but it'd be nice. I'm waiting to press some gears at the moment when I get a chance, but for now they're sitting on my desk. Matt Thats gonna be a 150mph ripper!
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