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Post by oldgeek on Jul 26, 2019 23:00:54 GMT -5
Great Scoot, great intro!
I had one of those (edit) Airsal aluminium 48mm 75cc on my Kymco ZX (similar engine to yours) It was a BLAST and lasted many miles before the edge of the piston broke. I did not have an expansion chamber pipe on it so RPMs were not as high as yours, nor was my top speed.
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Post by birdman on Jul 27, 2019 12:03:15 GMT -5
Oh man nice dio! Super clean!! Did you do the forks and front disc brake setup or did the previous owner?
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braden
Scoot Junior
Instagram: @instibbles
Posts: 15
Location: Toronto, ON
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Post by braden on Jul 29, 2019 7:16:35 GMT -5
Great Scoot, great intro! I had one of those Naraku Aluminium 48mm 75cc on my Kymco ZX (similar engine to yours) It was a BLAST and lasted many miles before the edge of the piston broke. I did not have an expansion chamber pipe on it so RPMs were not as high as yours, nor was my top speed. Oh Nice I am happy to hear that it lasted that long. I did order a UOP cooling fan to try to increase the airflow across the cylinder, I'm sure that would help increase the longevity of the engine even further. Right now it seems to sit between 105°C (221°F) and 125°C (257°F) So I'm not crazy concerned but it would be interesting to see how much I might be able to improve it. Oh man nice dio! Super clean!! Did you do the forks and front disc brake setup or did the previous owner? The previous owner had done the forks / panel swap (AF18 to ZX panels) / crank. I think that's about all thats still there from the previous owner. Although I still did have to do a fair amount to the front forks, the seal on the brake piston was busted so I had to replace that. The brake is a super low quality brake, I've seen them online for like $15-20. After the headache of replacing the piston seal it's definitely on the list of things I'll upgrade at some point. |
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Post by milly on Jul 30, 2019 20:42:29 GMT -5
Nice one 😊
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braden
Scoot Junior
Instagram: @instibbles
Posts: 15
Location: Toronto, ON
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Post by braden on Aug 20, 2019 17:28:32 GMT -5
Okay so I now have about 500km on this cylinder so I figure it should be nice and broken in.
I knew it was a little rich in areas so I've since leaned it out a little bit and its feeling better. I raised the needle clip to the leanest position #1/5 but added a shim so its about halfway between the 1st and 2nd clip. The air screw is also only about 3/4 of a turn out now. I figure I could probably bring the main and maybe even pilot jet down a size but I'll run it like this for a bit before doing that.
I still thought it would be a bit peppier so I ended up borrowing a compression tester from a friend. I was surprised to see I was only getting 80psi. I did add a little oil and that brought it up to 90psi so I figure my rings maybe aren't making the best seal.
The spark plug was all sorts of mixed colors, however nothing to light, I figure it was just a little dark from when it was running a bit rich. Replaced it with a new plug and I'll see how it looks in a few days.
I know when I tried to do a squish clearance test it was definitely larger than a couple millimeters. Trying to figure out if thats the likely culprit of the low psi or if I should try to replace the rings. I think my current plan is to try to find some thick solder so I can do a better squish test, and maybe I'll end up eliminating my head gasket or see if I can get a cylinder head with less clearance.
Planning to take a deeper dive into the engine this weekend, probably pressure test the engine again just to make sure nothing's come up there that could be adding to this.
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Post by pitobread on Aug 20, 2019 17:35:38 GMT -5
If your squish is a couple of mm that's probably part of the issue.
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braden
Scoot Junior
Instagram: @instibbles
Posts: 15
Location: Toronto, ON
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Post by braden on Sept 26, 2019 13:42:24 GMT -5
 Alright kinda late update but all the advice here has been awesome. So I did another pressure test to the engine and realized my base gasket had a small leak in it. Fixed that up easy enough and did a proper squish test. I was at 1.9mm so i got rid of the head gasket and just used a few layers of copper spray a gasket instead and got it down to 1.4mm. Since then I've put probably another 200km or so on it and really enjoying how much livelier it is. Seems the max RPM is about 9500 now. I guess that goes along with the strong compression? Either way it's still a hoot so I'm not complaining. Runs a bit hotter too. Seems to generally hover around 120°C (248°F) on a hot day. After a long stretch the hottest I saw it hit was 135°C (275°F), which from what I gather with an all aluminum build is the max I should be hitting. So I'll just make sure I keep my eye on it on longer rides. Few other changes, Got some RPM Rims, larger front brake disc (still need to get a better brake), RRGS Clutch, and a few other odds and ends.    |
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Post by oldgeek on Sept 26, 2019 14:01:02 GMT -5
Nice Work!
Next time you pull the cylinder get rid of the base gasket and use some hondabond or motoseal in its place. That will tighten your squish up even more. .8 would be pretty good.
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squab50
Scoot Member
Posts: 21
Location: lower saxony, germany
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Post by squab50 on Oct 15, 2019 15:52:12 GMT -5
Can i ask which exact vforce membrane block this is you're using with the stage 6 intake? thanks
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Post by pitobread on Oct 15, 2019 19:28:29 GMT -5
Its the KX65.
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braden
Scoot Junior
Instagram: @instibbles
Posts: 15
Location: Toronto, ON
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Post by braden on Jan 23, 2020 11:56:38 GMT -5
So It's winter and I figure I wont be riding anytime soon so why not take care of a few things I've been holding off on. Last time I took apart my bike I had noticed a few growing rust spots, So I took it apart down to the frame, ground off all the rust and repainted / rust proofed the frame.  I found a really cheap Lead90 oil pump online so I grabbed that hoping I could swap out the shaft but unfortunately the splines don't match. Figured for a few bucks I would try that before doing the whole oil injector delete.  At least the Lead90 oil pump came with a bracket that fit perfectly with my oil injector delete plug.  Still have a big list of to-do's -Chamfer my piston -re-install with new thinner Polini base gasket -upping my contra spring from a 1000RPM to a 1200RPM -install new PG Short Exhaust -Finish setting up shorty front forks -new front brake line -repaint front rim and just mostly put it all back together (and hope I remember how) |
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Post by mrchilled85 on Jan 23, 2020 17:42:59 GMT -5
thats a lovely scoot mate i would love a Dio but over here they are going for mega money and rare  |
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Post by Zino on Jan 23, 2020 20:25:43 GMT -5
Nice scoot
Those tricked out Dios rock
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braden
Scoot Junior
Instagram: @instibbles
Posts: 15
Location: Toronto, ON
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Post by braden on Jun 12, 2020 12:38:30 GMT -5
Long time no update.      Main changes with the rebuild were the new front set up, lower shocks, brakes etc. Cleaned up a lot like the wiring, oil pump delete, got my squish clearance down further to 1.3mm, and a bunch of other random stuff. I also changed the exhaust to the Phongeer PG short exhaust, it's a bit more free flowing than my previous so I had to up both jets one size. Pilot is now at 42, with the Main at a 90 in the 21mm OKO. I have the 24mm as well but haven't bothered and this feels pretty good as is. |
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Post by hippo008 on Jul 29, 2020 12:28:58 GMT -5
Man i love the Dio's. Sadly they aren't available here in the US. All we got was the Elite SR and only for a few years with the AF16 AF18 motors. I like the idea of a 110cc stroked out torque monster tearing up the town.
Your machine looks great. I like the clean "modified-stock" look. Is that the NCY suspension? I've been thinking about getting some.
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