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Post by ryan_ott on Aug 6, 2019 20:41:18 GMT -5
That is just to bleed air from the system when filling. Crack it loose to get the air out then close once coolant starts to come out.
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Post by PIG on Aug 7, 2019 7:44:17 GMT -5
I’ll throw my 2 cents in on the Iggy topic. My PreBug still has the stock iggy and it runs 13k+ rpm at WOT. Now I’ll be the first to say this is less then ideal, but how long do you actually run these hyper race motors at WOT on the streets. Not very long, a few second bursts is all it takes to get 60+ mph then you dial back the throttle and Cruze at 10-11k. So I think you can get away with a stock iggy on the street, but if your gonna race it or do long WOT pulls all the time spend the money on the iggy.
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Post by 808ministroke on Aug 9, 2019 17:10:17 GMT -5
That’s really good to hear as I don’t have cash for a internal rotor. And I am just going to be riding on the streets anyway . And I got temp gauge and water pump lmk if any one has experience with this pump seems like the rating should be sufficient. Thx for all the help guys your awesome.  |
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Post by 808ministroke on Aug 10, 2019 6:03:16 GMT -5
 GOr t this polini variation koso delta clutch with2000k springs and a winged bell should work great for the set up |
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Post by 808ministroke on Aug 10, 2019 19:24:53 GMT -5
 Can anybody fill me in as to what the hell this electrode looking thing is doing that came with That came on a mini stroke rexy that I just purchased it already has a electric choke as you can see the one on the left or the bottom is the ⭐️ carb that came on mymy other and all rexys afaik It’s weird because there’s actually some sort of channel inside the carburetor for this mechanism so my guess is it’s not the electric choke because there’s already one on the other side of the thing I’m thinking is that it’s a fuel pump of some sort in anyone clue me in......~  ?~§^§… |
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Post by geoffh on Aug 11, 2019 8:50:38 GMT -5
Some sort of heater element just a guess.
Geoff
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Post by chehystpewpur on Aug 12, 2019 22:35:00 GMT -5
the electric thing on the side is basically an electronic choke. also called something like enrichment whatever. kind of like an iac on a car but since its not fuel injected its not adjusted by a computer. u can leave it unplugged on the scoots that use it and usually not notice much of a diff if the carb is tuned well. the little electrode on the side that almost looks like a spark plug from the top angle with the blade terminal on the side is most likely a fuel heater air intake heater for the choke circuit or used to prevent icing on the throttle plate. cars used heat from the exhaust manifolds or coolant even up to modern fuel injection to improve fuel economy and warm up/ cold start performance.
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Post by 808ministroke on Aug 14, 2019 3:52:39 GMT -5
Just want to thank everyone on the forum you guys are all friends even if you have no clue that without you ( especially Brent your the man) I would have never seen this water cooled mhr 77 ever make smoke man this bore packs a punch!, I have to admit h20 is daunting but I surprised myself and got everything jerry rigged and working even the 20$ Amazon water pump! Today I finally got it running and no doubt I need some bigger main jets currently running a 115 m j but with no filter.....I know it’s but it’s common practice in Hawaii . The coolant actually wasn’t leaking from too many spots lol and I think I got it good enough for now. I was wondering if any one knows what a good sealant that I could put on the ends of the pump/bore/rad were the hoses go on that would make a good bond, anyone. ? Well keep on brapping boys this place has always felt like a family even before I ever posted anything. And six years ago I couldn’t even tell you what a carburetor was! What a journey from four stroke to two stroke to water cooled I’ll see you at the red lights and don’t be fooled I may were sandals and ain’t got panels but no need school because if you know you know that’s how it goes and that’s the only rule.
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Post by repherence2 on Aug 14, 2019 10:22:36 GMT -5
I'm happy for you 808ministroke! make sure you lock that Rexy up. when I find an legal GTX or Rexy, we gotta go for a cruise. I just picked up a used SYM dd50 engine, crossing over to the DIO side  . I'll probably clean up the engine and rebuild it. I'm thinking Polini Corsa bore mated to a Scorpion pipe. I'm thinking of buying a cheap Pronto or Taotao, and then putting the SYM engine into one of those 4 stroke mopeds and just go premix. that's my dream for a Sleeper. can you post some pics of your finished Rexy? |
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Post by 808ministroke on Aug 14, 2019 16:26:05 GMT -5
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Post by 808ministroke on Aug 15, 2019 22:34:51 GMT -5
Yah would be great to be able to mount a sym Dio engine on other frames you can get those built blocks for soo cheap right?
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Post by 808ministroke on Aug 16, 2019 3:55:01 GMT -5
Well To give you guys an update 😪I had the thing running nice never got above 70 degrees Celsius thought that it might’ve been a little rich and then realize that where ithe slide closeses at the top of the carburetor was loose and the whole time I was only able to open throttle half way couldn’t have even told the difference For the first day because it was still hard slamming a t half anywaysToday I fixed The slide took a look at the Jets realize that the me it was actually a 125 which made me feel better I am up to the pilot yet from 34 to 42 put the carburetor back on and haven’t been able to start it all day and night even tried it with the stock card once or twice I’m thinking it has to be a fu el issue there was a lot of wetness at the header so maybe sludge in the pipe but I really don’t think so The only other thing I did in between the time it worked and didn’t work besides messwith the carburetor was hammered the mounting bolt with the rubber mallet because it was not in the middle and one of the snap rings and came loose so I center Ed it and since then I am scratching my head  with a bat |
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Post by chehystpewpur on Aug 16, 2019 16:44:26 GMT -5
Well To give you guys an update 😪I had the thing running nice never got above 70 degrees Celsius thought that it might’ve been a little rich and then realize that where ithe slide closeses at the top of the carburetor was loose and the whole time I was only able to open throttle half way couldn’t have even told the difference For the first day because it was still hard slamming a t half anywaysToday I fixed The slide took a look at the Jets realize that the me it was actually a 125 which made me feel better I am up to the pilot yet from 34 to 42 put the carburetor back on and haven’t been able to start it all day and night even tried it with the stock card once or twice I’m thinking it has to be a fu el issue there was a lot of wetness at the header so maybe sludge in the pipe but I really don’t think so The only other thing I did in between the time it worked and didn’t work besides messwith the carburetor was hammered the mounting bolt with the rubber mallet because it was not in the middle and one of the snap rings and came loose so I center Ed it and since then I am scratching my head with a bat im not sure that was english or not but i think i got what ur sayin.
a 42 is a pretty big pilot jet and a 125 is pretty large for a main. what kind of revs are you hitting and speeds before it stopped running? also did you look at plug to see if you needed to rejet. having a vacuum leak at the top of the carb would make you need more fuel but fixing that would cause you to need less. you may have over jetted possibly and not needed a jet change.
having said wetness near your exhaust port may call for a trip to the doctor. all jokes aside that means your getting an exhaust leak and thats most likely unburnt fuel and oil mixed with some carbon. a little is going to happen but alot could be a sign of running issues and cause some carb tuning issues for sure. maybe try a few jet sizes down especially on the pilot and check your reeds while the carb is off. you never know when they will ruin your day.
i would like to know what snap rings came loose when you center ed something? and while you were doing that could u have maybe knocked the plug wire off? what about hit the kill switch? could it be off? i spent an hr scratching my head one time because someone hit it and i dont use mine so i didnt even think about it. i took the cylinder off and everything to make sure something didnt happen in the motor i felt pretty stupid that day.
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Post by PIG on Aug 16, 2019 20:08:35 GMT -5
Throw a new plug in it, could be as simple as that.
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Post by repherence2 on Aug 16, 2019 20:16:10 GMT -5
Well To give you guys an update 😪I had the thing running nice never got above 70 degrees Celsius thought that it might’ve been a little rich and then realize that where ithe slide closeses at the top of the carburetor was loose and the whole time I was only able to open throttle half way couldn’t have even told the difference For the first day because it was still hard slamming a t half anywaysToday I fixed The slide took a look at the Jets realize that the me it was actually a 125 which made me feel better I am up to the pilot yet from 34 to 42 put the carburetor back on and haven’t been able to start it all day and night even tried it with the stock card once or twice I’m thinking it has to be a fu el issue there was a lot of wetness at the header so maybe sludge in the pipe but I really don’t think so The only other thing I did in between the time it worked and didn’t work besides messwith the carburetor was hammered the mounting bolt with the rubber mallet because it was not in the middle and one of the snap rings and came loose so I center Ed it and since then I am scratching my head with a bat im not sure that was english or not but i think i got what ur sayin.
us guys in Hawai'i don't speak normal English, we speak Pidgin English here. it's a different dialect of English lol |
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?~§^§…
. I'll probably clean up the engine and rebuild it. I'm thinking Polini Corsa bore mated to a Scorpion pipe. I'm thinking of buying a cheap Pronto or Taotao, and then putting the SYM engine into one of those 4 stroke mopeds and just go premix. that's my dream for a Sleeper. 
with a bat