engine build: SYM dd50.

[hippo008]

I'd like to see photos of the Taiwan 80-90cc pipe. Whatever 808 recommends is probably a good choice. Those Hawaiian cats go crazy for Dio.

[Sum-azn-kid]

Scorpion pipes are prone to cracking and some don't fit very good. Not made as well as the old ones. Tighten info the flange bolts first B4 the side mount is best. If u need to make new holes on the side or bigger ones so u don't stress the flange. PG long and short have issues wit the baffle welds breaking causing a loud rattle.

[repherence2]

Jun 11, 2021 20:26:23 GMT -5 Sum-azn-kid said:

Scorpion pipes are prone to cracking and some don't fit very good. Not made as well as the old ones. Tighten info the flange bolts first B4 the side mount is best. If u need to make new holes on the side or bigger ones so u don't stress the flange. PG long and short have issues wit the baffle welds breaking causing a loud rattle.

True that. I read about fitment and cracking issues with the Scorpions. I learned my lesson on the Chinarelli with the YMS v8 pipes, forcing it to fit up instead of spacing it properly. I just gotta sample one of those because i want to see what they're about.

I was also spocking that SEF Black on Feebay for $400. The seller is out of hawaii. To me, the Scorpions look like SEF Black copies. And the PG Long look like a SEF Magic copy. I wouldn't mind getting a flip cone to sample that.

[Sum-azn-kid]

Performance wise I don't think the sef black is worth $400. They are a quite pipe more for being stealthy or passing safety. If it's just to have an OG part thaN the $400 could be hustified. V8 pipe copied sef black. Scorpion is closer to bull pipe both from PI. I agree with the PG long looking very similar to the sef magic.

[repherence2]

Jun 12, 2021 1:58:00 GMT -5 Sum-azn-kid said:

Performance wise I don't think the sef black is worth $400. They are a quite pipe more for being stealthy or passing safety. If it's just to have an OG part thaN the $400 could be hustified. V8 pipe copied sef black. Scorpion is closer to bull pipe both from PI. I agree with the PG long looking very similar to the sef magic.

Thanks for the info. I thought the SEF Black was a performance pipe this whole time LOL, fooled.

[repherence2]

Jun 11, 2021 19:43:45 GMT -5 hippo008 said:

I'd like to see photos of the Taiwan 80-90cc pipe. Whatever 808 recommends is probably a good choice. Those Hawaiian cats go crazy for Dio.

this is a pipe that SSS had on clearance.  i'm sure it's the same one that i saw at 808.

the stroker pipe that i saw on the rack looked like this one.

maybe we gotta sample this one...

[hippo008]

Jun 12, 2021 15:37:45 GMT -5 repherence2 said:

Jun 11, 2021 19:43:45 GMT -5 hippo008 said:

I'd like to see photos of the Taiwan 80-90cc pipe. Whatever 808 recommends is probably a good choice. Those Hawaiian cats go crazy for Dio.

this is a pipe that SSS had on clearance.  i'm sure it's the same one that i saw at 808.

the stroker pipe that i saw on the rack looked like this one.

maybe we gotta sample this one...

I found the YFIS pipe for sale online. It's made of titanium and costs $2000. The other two pipes I'm pretty sure are JISO pipes. The SSS prototype I think is a JISO wrap down. Pic here. 


I think that stroker chamber from 808 Is also a JISO or Taiwan pipe. Here's one I found that matches it. 



EDIT:

I sent an email to Dees scooter shop about pipes and got some interesting feedback. It looks like most pipes that come out of Taiwan and China are made for 120cc stroker setups. Anything in the range of 70-100cc there isnt a lot available that seems quality. There are some PG style single cone pipes available, mainly the one I posted above. Im concerned about their quality and noise level though, I cant imagine they are on the quiet end. Dee's shop recommended these pipes to me 




They are made by JISO custom for your setup. They are pretty expensive, something like $400 a pipe, but they are a true chamber pipe and they have a separate muffler for quieter operation. This seems pretty ideal to me, it would be a perfect match to a 90cc~ setup. 

[repherence2]

scavenger hunt acquisition from 808Cycles. i was hoping for an exhaust. i spocked a "Scorpion" on the rack but it was not for sale. the sales guy called it a "Centipede" because it was so out of wack, and they brought in a whole bunch of them, all the same. i asked the owner to see if he could order me a Yasuni C16 for vert zuma. i gotta follow up with him next week on that. i think i might offer to buy the "Centipede" and hack it up and reweld it if it's cheap enough. other than that, still waiting for "random" exhausts to show up at 808Cycles now that i got some play cash.

*CVT cover aluminum spacer.
*clear CVT cover.



*YMS stock looking exhaust. YMS pipe. 027-0001-0001-0006 (AF-B002-26mm) MADE IN TAIWAN.




CVT cover, aluminum CVT cover spacer, and YMS exhaust fitted up. (Taida 50mm bore installed).

[repherence2]

new treasures from 808Cycles...

a set of wheels, front and rear. the shop guy also found me some red anodized valve stems with anodized caps to. i also got a new nut for the rear wheel.






i also bought a new pipe. i thought it was a Scorpion when i seen it on the wall, but they said a different name that i forgot. i went in to check the status of a Yasuni C16 that i had them try to order 3 weeks ago. he said that it's on back order for his vendor. im cool with that. i told him that if/when he does bring it in, that i still want it.

so i bought this pipe that really looks like a Scorpion. Somewhat like a Bull pipe out of Philippines. i dont recall if this is from Taiwan or from Philippines. neat stuff though. it is a Chamber pipe in disguise. i always wondered whey people said that Scorpion was a top end pipe that can rev out. i shined a light into the end of the pipe. the last chamber of the can (the end) is lined with steel wool. then about 2" before the welds that you can see on the outside of the can, there is a 2" ring for perforated metal lining the can. at that weld mark, there is also a cone that is angled away from the center line axis of the can.

the pipe was kinda pricy. but it was what i summoned from the Universe so i bought it. it's tagged as 90cc. it's mated to a Taida 50mm cast bore, ported to Corsa exhaust timing. it's stock stroke on a Taiwan crank which actually puts this engine at just under 82cc's.... Oops. "There are no mistakes, just happy little accidents." we'll see how a "90" exhaust works on a 82.








and then i bought a KOSO kicker to go with my clear CVT cover.





...the treasure hunts... good times.

[repherence2]

painted the pipe with high temp black. fitted it up to the engine. made up the exhaust flange first. then i mounted the bracket to the engine block like Ube said to do. i actually drilled out both holes on the block and installed M8x1.25 helicoils. drilled out to 21/64" like the coil kit said to do, tapped it and installed the coils. to much "torque till loose" by the previous owner of this block .



i followed Ube's recommendation of making up the flange before making up the bracket. i bought a new SS bolt, nut, lock washer, and 4 washers. it needed 3 shims (washers) to fill the gap between the engine bracket and the tab on the pipe. no "pull" or strain on the pipe at all, i'm pretty sure it will not crack.



now that 3 coats of high temp paint has dried, preservation complete, I'm going to wrap this thing with some DEI titanium exhaust wrap.

[repherence2]

wrapped up. couldn't wrap much further because the cone shape at that diameter does not allow the wrap to overlap nicely, so i just ended it. i spent a few hours giving it a shot to get the wrap all the way to the straight can, but i called it quits.




thinking of clear coating the wrap with some clear enamel. or maybe just go to O'Really's to order the clear silicone spray from DEI.

[repherence2]

May 10, 2021 18:54:43 GMT -5 190mech said:

I know the C16 dimensions and it's proven performance,its very hard to beat..Dont know anything about the other pipe,if they can supply some detailed dimensions I'll be glad to see what kind of build it really is...

the guru spoketh, and i heeded his advice...

[repherence2]

dropped in at 808Cycles earlier in the week and the the owner walked in and said, "hey, your Yasuni came in." i asked him how much it was going to be because when he was ordering it, he mentioned that it would be around $200. he did mention the Yasuni C10, but i specifically told him, "Yasuni C16, Zuma/Jog vertical." never really thought he would actually bring it in.

the box was priced at "$400". so when i asked him about payment and how much, i pointed to the 400. "Oh, that's retail if someone else came in to buy it before you picked it up." when all was said and done, $260 out the door. i guess Sam knows that i don't kid around, that last pipe i picked up was $400. and here it is...


flange view. gotta modify the flange to fit up properly. the bolt spacing between DIO and JOG is different. DIO is wider. so the plan is to slot the holes on the Yasuni flange to increase the diametrical bolt spacing.







doing some fit up right now. i still have the mount bracket from the Asian pipe bolted up to the engine case for spacing reference and brainstorming a solution.

i seen a picture of ScooterSwapShop's mounting bracket for their version of C16 for Dio. they also had a custom flange made for their version of the C16. fancy.

[repherence2]

mounting bracket modified...

the idea was to keep it simple. when i first mocked up the exhaust, i thought i was going to have to make a plate bracket to bolt to the engine case (like the one in the pictures with the laser etched Hawaiian Islands upside down lol) and then use some bolts and spacers to bolt up to the factory Yasuni vertical Jog bolt hole layout on the bracket. after further manipulation, i found that i could make it work with just the Yasuni bracket. used the existing lower bolt hole, drilled 1 new hole for the upper bolt hole. massaged/ground one of the slots that the rubber mounts bolt up to.


back side of bracket. targeted for new upper hole to be drilled to bolt up to dd50 engine case. during mock up, i used the lower hole to bolt the bracket up to the case. for mock up purposes, i did not have "spacers" so i used 3 roller weights as spacers to space the bracket away from the case so that the pipe clears the fan shroud. to target the upper hole, i used a m8 stud (threaded rod)about 3" long and one of the flange nuts from the Yasuni pipe. threaded the rod in through the upper engine case hole and placed the flange nut on the front side. continued threading in the rod from the back side until it barely touched the masking take, and then locked down the flange nut on the front side of the case to square off the position of the stud, make it perpendicular. then traced outer diameter of threaded rod onto the masking tape.


targeted for the slotting of the forward rubber mount bolt slot. mocked up the bracket with a long bolt in the lower hole and 3 roller weights to space it out from the engine case. fitted up the pipe. for some magical reason, the rear rubber mount slot did not need to be modified.


bracket fitted up with hardware after the hole was drilled and the slot modified.




backside. 2 metal spacers per bolt. 1" and 1/2" in length. 1-1/2" was the approximate length of 3 roller weights end to end used for mock up.


---next up, still gotta slot the bolt holes on the exhaust flange.

[hippo008]

Aug 13, 2021 16:47:22 GMT -5 repherence2 said:

mounting bracket modified...

the idea was to keep it simple. when i first mocked up the exhaust, i thought i was going to have to make a plate bracket to bolt to the engine case (like the one in the pictures with the laser etched Hawaiian Islands upside down lol) and then use some bolts and spacers to bolt up to the factory Yasuni vertical Jog bolt hole layout on the bracket. after further manipulation, i found that i could make it work with just the Yasuni bracket. used the existing lower bolt hole, drilled 1 new hole for the upper bolt hole. massaged/ground one of the slots that the rubber mounts bolt up to.


back side of bracket. targeted for new upper hole to be drilled to bolt up to dd50 engine case. during mock up, i used the lower hole to bolt the bracket up to the case. for mock up purposes, i did not have "spacers" so i used 3 roller weights as spacers to space the bracket away from the case so that the pipe clears the fan shroud. to target the upper hole, i used a m8 stud (threaded rod)about 3" long and one of the flange nuts from the Yasuni pipe. threaded the rod in through the upper engine case hole and placed the flange nut on the front side. continued threading in the rod from the back side until it barely touched the masking take, and then locked down the flange nut on the front side of the case to square off the position of the stud, make it perpendicular. then traced outer diameter of threaded rod onto the masking tape.


targeted for the slotting of the forward rubber mount bolt slot. mocked up the bracket with a long bolt in the lower hole and 3 roller weights to space it out from the engine case. fitted up the pipe. for some magical reason, the rear rubber mount slot did not need to be modified.


bracket fitted up with hardware after the hole was drilled and the slot modified.




backside. 2 metal spacers per bolt. 1" and 1/2" in length. 1-1/2" was the approximate length of 3 roller weights end to end used for mock up.


---next up, still gotta slot the bolt holes on the exhaust flange.

On my Dio 2 ZX I currently have a Corsa, MHR crank and Arrow pipe. Sounds great and im sure it will ride great too. However I have always been tempted by the big boy Honda stroker setups. On the Dio Baja XR I am importing I plan to use this same setup. Ported 50mm bore and a modified C16 Vertical for maximum OOMF factor. I think you will be very pleased with the results. 

by my count you have about 5(?) pipes for this thing? I am curious, why? It seems like everything you have selected outside the Arrow will be great for a bigger stroker, why not use one of them? Just like collectin' parts?

I am very curious to hear this motor run and see how it performs. As far as I know this is a rare-er setup and not a lot of information is online about it, not in english anyways.