SE50 build
Moderator: Moderator
- swimmingfree
- CBR1000RR
- Posts: 3357
- Joined: Tue Jun 14, 2011 12:28 pm
- Location: mich.
SE50 build
before some one says something a friend fix my spelling
I know it's not winter yet, but it gets cool up here in Michigan.
I'm building a new motor so I can take the motor off the Sprejunk (scooter name)
\and have it as a back up motor...there will be some things I'll have to swap over,
such as the cooling tin, starter, tire and my expipe that I have gutted and put a bigger
tip in it ~ don't have a good pipe.
Here's my winter project. It's a se50 (87 elite) with a 10/1 finely drive which stays in the
block and won't be changed..... most parts are used but not used up lol The first thing
I'm doing is to break the block and open the ports in the case for better flow...to grind on
aluminum you need to put oil on the case so the the dermal grind bit does not fill up with
aluminum and overheat and fail. Don't be cheap with the motor oil~ just a few drops every
so often can make a world of difference. This is my first grinding and will do a little more when
I get the used manifold and carb ....I'm using my little finger as a measuring tool.
Here's photo of before and after...
Now I'm doing the gasket, it all makes a difference.
When looking at the case with a straight edge the top path curves in so that's what I ground
out to get a better flow of gas mix in the jug.
I know it's not winter yet, but it gets cool up here in Michigan.
I'm building a new motor so I can take the motor off the Sprejunk (scooter name)
\and have it as a back up motor...there will be some things I'll have to swap over,
such as the cooling tin, starter, tire and my expipe that I have gutted and put a bigger
tip in it ~ don't have a good pipe.
Here's my winter project. It's a se50 (87 elite) with a 10/1 finely drive which stays in the
block and won't be changed..... most parts are used but not used up lol The first thing
I'm doing is to break the block and open the ports in the case for better flow...to grind on
aluminum you need to put oil on the case so the the dermal grind bit does not fill up with
aluminum and overheat and fail. Don't be cheap with the motor oil~ just a few drops every
so often can make a world of difference. This is my first grinding and will do a little more when
I get the used manifold and carb ....I'm using my little finger as a measuring tool.
Here's photo of before and after...
Now I'm doing the gasket, it all makes a difference.
When looking at the case with a straight edge the top path curves in so that's what I ground
out to get a better flow of gas mix in the jug.
Last edited by swimmingfree on Mon Mar 31, 2014 9:14 am, edited 1 time in total.
handicap (dyslexia)
looking for
se50 crank...
SpreJunk 87elite in a spree body
ruckus variator , 3.5 tire , 1500 drive face spring , a 64 bbk ,
8 gram rollers, stock carb , after market air filter and 105 jet
looking for
se50 crank...
SpreJunk 87elite in a spree body
ruckus variator , 3.5 tire , 1500 drive face spring , a 64 bbk ,
8 gram rollers, stock carb , after market air filter and 105 jet
- paulpauly7
- CB900F
- Posts: 1945
- Joined: Tue Feb 21, 2012 6:57 pm
- Location: nz
Re: winter build
PLEASE tell me you havent finished with them intake windows and your gonna clean them up some more .
86 Nifty Fifty (spree)
ZX disk brake
Kitico 120kmh speedo
AF18 ZX ported
Polini corsa
Malossi crank
CTmani
24mmOKO
40pilot118main
Scorpion pipe
8.44 to 1
Michelin s1
71.3mph
92 yz125, 94 crm250
ZX disk brake
Kitico 120kmh speedo
AF18 ZX ported
Polini corsa
Malossi crank
CTmani
24mmOKO
40pilot118main
Scorpion pipe
8.44 to 1
Michelin s1
71.3mph
92 yz125, 94 crm250
- swimmingfree
- CBR1000RR
- Posts: 3357
- Joined: Tue Jun 14, 2011 12:28 pm
- Location: mich.
Re: winter build
parts dont need to be clean till you put it together,.....lol
swimmingfree
ps
cant make them bigger too thin of metal left....
swimmingfree
ps
cant make them bigger too thin of metal left....
handicap (dyslexia)
looking for
se50 crank...
SpreJunk 87elite in a spree body
ruckus variator , 3.5 tire , 1500 drive face spring , a 64 bbk ,
8 gram rollers, stock carb , after market air filter and 105 jet
looking for
se50 crank...
SpreJunk 87elite in a spree body
ruckus variator , 3.5 tire , 1500 drive face spring , a 64 bbk ,
8 gram rollers, stock carb , after market air filter and 105 jet
- paulpauly7
- CB900F
- Posts: 1945
- Joined: Tue Feb 21, 2012 6:57 pm
- Location: nz
Re: winter build
i mean your porting .Look at you pic of the stock ports and look at your port job.You need to get in there with a file and straiten them edges up .bigger is not always better .
86 Nifty Fifty (spree)
ZX disk brake
Kitico 120kmh speedo
AF18 ZX ported
Polini corsa
Malossi crank
CTmani
24mmOKO
40pilot118main
Scorpion pipe
8.44 to 1
Michelin s1
71.3mph
92 yz125, 94 crm250
ZX disk brake
Kitico 120kmh speedo
AF18 ZX ported
Polini corsa
Malossi crank
CTmani
24mmOKO
40pilot118main
Scorpion pipe
8.44 to 1
Michelin s1
71.3mph
92 yz125, 94 crm250
Re: winter build
It will take a while but definitely use a hand file, once it gets flat you can take an Emory board and smooth it out more at the top and sides. If not those grooves will mess up the smooth flow of air. It takes a long time to port, sometimes I've spent weeks porting blocks and cylinders. Jagged and rough edges are bad. If you can run your finger nail or a pencil tip along it and it snags it needs to be sanded more.
Re: winter build
Also angle the carb side of the intake windows so its not squared when air hits it. Most of this can be done with a careful hand and a file. If you don't feel comfortable removing more dont do it but it should be done while apart.
- swimmingfree
- CBR1000RR
- Posts: 3357
- Joined: Tue Jun 14, 2011 12:28 pm
- Location: mich.
Re: winter build
how is this better most of the lump and bump was oil and grinding gunk ...
swimmingfree
handicap (dyslexia)
looking for
se50 crank...
SpreJunk 87elite in a spree body
ruckus variator , 3.5 tire , 1500 drive face spring , a 64 bbk ,
8 gram rollers, stock carb , after market air filter and 105 jet
looking for
se50 crank...
SpreJunk 87elite in a spree body
ruckus variator , 3.5 tire , 1500 drive face spring , a 64 bbk ,
8 gram rollers, stock carb , after market air filter and 105 jet
- paulpauly7
- CB900F
- Posts: 1945
- Joined: Tue Feb 21, 2012 6:57 pm
- Location: nz
Re: winter build
do you have some small files if so slowly work at it till its smoother
86 Nifty Fifty (spree)
ZX disk brake
Kitico 120kmh speedo
AF18 ZX ported
Polini corsa
Malossi crank
CTmani
24mmOKO
40pilot118main
Scorpion pipe
8.44 to 1
Michelin s1
71.3mph
92 yz125, 94 crm250
ZX disk brake
Kitico 120kmh speedo
AF18 ZX ported
Polini corsa
Malossi crank
CTmani
24mmOKO
40pilot118main
Scorpion pipe
8.44 to 1
Michelin s1
71.3mph
92 yz125, 94 crm250
- paulpauly7
- CB900F
- Posts: 1945
- Joined: Tue Feb 21, 2012 6:57 pm
- Location: nz
Re: winter build
also when running bigger intake ports you need to run smaller jets as well
86 Nifty Fifty (spree)
ZX disk brake
Kitico 120kmh speedo
AF18 ZX ported
Polini corsa
Malossi crank
CTmani
24mmOKO
40pilot118main
Scorpion pipe
8.44 to 1
Michelin s1
71.3mph
92 yz125, 94 crm250
ZX disk brake
Kitico 120kmh speedo
AF18 ZX ported
Polini corsa
Malossi crank
CTmani
24mmOKO
40pilot118main
Scorpion pipe
8.44 to 1
Michelin s1
71.3mph
92 yz125, 94 crm250
- swimmingfree
- CBR1000RR
- Posts: 3357
- Joined: Tue Jun 14, 2011 12:28 pm
- Location: mich.
Re: winter build
no i dont but was going to Harbor Freight down the road about 4 miles from me ....
swimmingfree
swimmingfree
handicap (dyslexia)
looking for
se50 crank...
SpreJunk 87elite in a spree body
ruckus variator , 3.5 tire , 1500 drive face spring , a 64 bbk ,
8 gram rollers, stock carb , after market air filter and 105 jet
looking for
se50 crank...
SpreJunk 87elite in a spree body
ruckus variator , 3.5 tire , 1500 drive face spring , a 64 bbk ,
8 gram rollers, stock carb , after market air filter and 105 jet
- swimmingfree
- CBR1000RR
- Posts: 3357
- Joined: Tue Jun 14, 2011 12:28 pm
- Location: mich.
Re: winter build
hay LoveMyHonda you said Emory board on one of your post do you mean finger file????
what do you guy think about this ????
swimmingfree
what do you guy think about this ????
swimmingfree
handicap (dyslexia)
looking for
se50 crank...
SpreJunk 87elite in a spree body
ruckus variator , 3.5 tire , 1500 drive face spring , a 64 bbk ,
8 gram rollers, stock carb , after market air filter and 105 jet
looking for
se50 crank...
SpreJunk 87elite in a spree body
ruckus variator , 3.5 tire , 1500 drive face spring , a 64 bbk ,
8 gram rollers, stock carb , after market air filter and 105 jet
Re: winter build
The other metal part is the one you want to remove or cut off evenly. It will eventually rub the reeds against the intake tho and split them.
A fingernail file or emery board I want to say is the same thing, just not the kind with metal. It needs to be flexible.
A fingernail file or emery board I want to say is the same thing, just not the kind with metal. It needs to be flexible.
- swimmingfree
- CBR1000RR
- Posts: 3357
- Joined: Tue Jun 14, 2011 12:28 pm
- Location: mich.
Re: winter build
the thing is a spring that help hole the read down its not the stopper the other steel thing is the stopper..
swimmingfree
swimmingfree
handicap (dyslexia)
looking for
se50 crank...
SpreJunk 87elite in a spree body
ruckus variator , 3.5 tire , 1500 drive face spring , a 64 bbk ,
8 gram rollers, stock carb , after market air filter and 105 jet
looking for
se50 crank...
SpreJunk 87elite in a spree body
ruckus variator , 3.5 tire , 1500 drive face spring , a 64 bbk ,
8 gram rollers, stock carb , after market air filter and 105 jet
- Trafficjamz
- CBR1000RR
- Posts: 5353
- Joined: Tue Jul 14, 2009 7:53 pm
- Location: Eastlake, MI
- Contact:
Re: winter build
Your intake windows need to be smoothed out some.
I use a little flap wheel like this when opening up these windows.
Take your time and try to get every thing as smooth as this.
I use a little flap wheel like this when opening up these windows.
Take your time and try to get every thing as smooth as this.
new best 1/8th mile time 9.647 seconds @67.155 mph 310lbs total weight
- swimmingfree
- CBR1000RR
- Posts: 3357
- Joined: Tue Jun 14, 2011 12:28 pm
- Location: mich.
Re: winter build
were did you get the little flap wheel at ??? do thay fit a dremal??
swimmingfree
swimmingfree
handicap (dyslexia)
looking for
se50 crank...
SpreJunk 87elite in a spree body
ruckus variator , 3.5 tire , 1500 drive face spring , a 64 bbk ,
8 gram rollers, stock carb , after market air filter and 105 jet
looking for
se50 crank...
SpreJunk 87elite in a spree body
ruckus variator , 3.5 tire , 1500 drive face spring , a 64 bbk ,
8 gram rollers, stock carb , after market air filter and 105 jet