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Post by 190mech on Jan 20, 2017 4:50:27 GMT -5
Dont modify your stock airbox!Just take the snorkel out,then it flows enough for a 100+cc motor.Rejetting will likely be needed if you do this with the stock setup..
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Post by Lucass2T on Jan 20, 2017 7:31:43 GMT -5
Am with 190. Keep the stock airbox and remove the snorkel. Open filters or powerfilters catch a lot of mud, dust and water...you don't want that in your engine.
After a bbk upgrade i would go with a nice expansion chamber. Stay away from the ebay pipes. A 'tecnigas next' would be an excellent choice if you want to go low budget and want low rpm torque (right off the line power). A yasuni R would be an excellent choice if you want more power overall and higher up in the rev range...but they are more pricey.
You really don't have to upgrade the inlet tract (airfilter, carburetor, reeds) yet at this moment. It supports enough airflow for these power levels.
And like Niz, also I like the characteristics of an engine with bbk and stock pipe.
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Post by 190mech on Jan 20, 2017 10:37:50 GMT -5
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Post by pinkflames420 on Jan 20, 2017 13:35:04 GMT -5
Am with 190. Keep the stock airbox and remove the snorkel. Open filters or powerfilters catch a lot of mud, dust and water...you don't want that in your engine. After a bbk upgrade i would go with a nice expansion chamber. Stay away from the ebay pipes. A 'tecnigas next' would be an excellent choice if you want to go low budget and want low rpm torque (right off the line power). A yasuni R would be an excellent choice if you want more power overall and higher up in the rev range...but they are more pricey. You really don't have to upgrade the inlet tract (airfilter, carburetor, reeds) yet at this moment. It supports enough airflow for these power levels. And like Niz, also I like the characteristics of an engine with bbk and stock pipe. Thanks guys! I'll definitely stick with the stock air box then. But regarding this "snorkel". Does anyone have a pic? I already had been looking at scootertuning and they don't seem to actually sell "expansion chambers". So I have to ask, is a muffler /expansion chamber the samething? If so then I might consider getting the Yasuni muffler, assuming it fits, and assuming I can get away with the just the bbk, upjetting, and maybe getting a better chamber for better air flow ...because I see scootertuning has a deal $200 orders free shipping so I'm TRYING to spend a few more dollars on whatever. |
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Post by pinkflames420 on Jan 20, 2017 13:36:56 GMT -5
So besides wether or not buy the expansion chamber just because I want the free shipping lol, the bbk and bigger jets will definitely be happening. Keeping stock air box and stock carb.
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Post by pinkflames420 on Jan 20, 2017 18:08:40 GMT -5
The jet kit I'm looking to buy is stage6 10piece main jet kit 6mm. Would I get the main jet kit sizes 80-102 ? Or would I get the smaller ones? Sizes 60-82?
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Post by Lucass2T on Jan 20, 2017 18:24:01 GMT -5
The jet kit I'm looking to buy is stage6 10piece main jet kit 6mm. Would I get the main jet kit sizes 80-102 ? Or would I get the smaller ones? Sizes 60-82? Thats a tough one since im guessing you'll end up around size 80. My suggestion is to check whats in there now and buy jets seperatly ranging from 6 to 14 sizes bigger. So if you have a 70 size jet, buy 76-84 all seperate. |
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Post by pinkflames420 on Jan 20, 2017 18:32:25 GMT -5
The jet kit I'm looking to buy is stage6 10piece main jet kit 6mm. Would I get the main jet kit sizes 80-102 ? Or would I get the smaller ones? Sizes 60-82? Thats a tough one since im guessing you'll end up around size 80. My suggestion is to check whats in there now and buy jets seperatly ranging from 6 to 14 sizes bigger. So if you have a 70 size jet, buy 76-84 all seperate. I've tried looking for the numbers on them the first time I cleaned my carb a month or so ago, and I couldn't seem to see any  i will check again today and use a magnifying glass but I was pretty sure I seen nothing with a number |
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Post by pinkscoot on Jan 20, 2017 19:18:23 GMT -5
I have a jewelers loop I use to read them. Look all over they are on top or the side. Make sure you get the correct jets for your carb. Not all jets are created equal.
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Post by pinkflames420 on Jan 20, 2017 21:18:49 GMT -5
I found a quick pic of my air box just to show which one I have (too lazy to take one) lol, i can't see anything that might be a "snorkel". What do you guys mean by this?  |
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Post by Deleted on Jan 20, 2017 23:04:04 GMT -5
I found a quick pic of my air box just to show which one I have (too lazy to take one) lol, i can't see anything that might be a "snorkel". What do you guys mean by this? If that is like the airbox that used to be on my 50cc 4T I believe the snorkel is the plastic piece just inside the box on the intake side. Usually this can be removed by just pulling on it. There also may be a plastic screen like device on either the end of the snorkel or the intake hole itself. Maybe yours does not have this, I really do not know so do not listen to me. Bill Check this out: 49ccscoot.proboards.com/post/27249/thread |
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Post by pinkflames420 on Jan 20, 2017 23:11:57 GMT -5
After watching a couple videos on YouTube, and reading the thread "how to install bbk for 1e40QMB", I feel confident enough that I could do it myself 😎 I have been keeping note of the "must-dos" when putting a new cylinder.... I know I'm not 100% knowledgeable on how my scooter runs, but theres only one way to put it on right so, if there's anyone who thinks that this might struggle with this task, then I'll probably just get my mechanic to do it if I get more than 2 DONT DO ITS lol.
PS. REGARDING JETS; just confirming, I should only have to upsize my main jets right?
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Post by Lucass2T on Jan 21, 2017 1:28:42 GMT -5
After watching a couple videos on YouTube, and reading the thread "how to install bbk for 1e40QMB", I feel confident enough that I could do it myself 😎 I have been keeping note of the "must-dos" when putting a new cylinder.... I know I'm not 100% knowledgeable on how my scooter runs, but theres only one way to put it on right so, if there's anyone who thinks that this might struggle with this task, then I'll probably just get my mechanic to do it if I get more than 2 DONT DO ITS lol. No, you can do it! First of all you have a motivation for doing it yourself, so if thats the case you'll have to do it yourself someday anyway so why not now? And second, there's so much info here. And third, if it'll end up in a disaster a lot of people will help you solve it.PS. REGARDING JETS; just confirming, I should only have to upsize my main jets right? Yes, the main jet. Most of the time the on in the centre of the carb and most of the time the biggest of the other two jets. |
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Post by pinkflames420 on Jan 21, 2017 1:42:35 GMT -5
After watching a couple videos on YouTube, and reading the thread "how to install bbk for 1e40QMB", I feel confident enough that I could do it myself 😎 I have been keeping note of the "must-dos" when putting a new cylinder.... I know I'm not 100% knowledgeable on how my scooter runs, but theres only one way to put it on right so, if there's anyone who thinks that this might struggle with this task, then I'll probably just get my mechanic to do it if I get more than 2 DONT DO ITS lol. No, you can do it! First of all you have a motivation for doing it yourself, so if thats the case you'll have to do it yourself someday anyway so why not now? And second, there's so much info here. And third, if it'll end up in a disaster a lot of people will help you solve it.PS. REGARDING JETS; just confirming, I should only have to upsize my main jets right? Yes, the main jet. Most of the time the on in the centre of the carb and most of the time the biggest of the other two jets.Thats all all I really needed lol 😜 I shall do it myself then! I'll actually get to use my torque wrench for the first time LOL knew I was gonna need it someday. And while I mention it, 10-15ft lb on the cylinder head screws(4) seems to be a wide range, what do you guys recommend for that setting? Does it strictly have to do with cylinder or other factors of the scooter effect how tight they should be? |
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Post by Lucass2T on Jan 21, 2017 5:29:18 GMT -5
For m6 or m7 head bolts you need to use 11nm of force. Dunno how much that is in lb/ft or whatever that scale is called (I only use metric units). They should always be that tight, on a completely stock or heavily modified engine, dont matter. Tightening all four headbolts to the same specific number is very important and with a torquewrench can very easily be achieved. I think every self respecting enhousiast/mechanic should use them. |
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