oko adapter

Does your Spree/Elite already run great, and you're trying to make it quicker/faster? Need a monster motor swap? Discuss your ideas here.

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evilone
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oko adapter

Post by evilone »

Is this intake designed to mount directly to motor to use bigger carb while using stock reed block?
http://www.treatland.tv/OKO-26mm-intake ... ke-dio.htm
2001 Honda Elite
1995 Yamaha Jog
1994 Yamaha Axis

I can't believe
that cop put me
in the backseat
when I clearly
called shotgun.
kylebo
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Re: oko adapter

Post by kylebo »

I DONT KNOW. I came across the same thing It sure looks like it is. I dont think I would run a 26mm threw the stock reedblock. This would be great for the smaller carbs by the look of it.
01 dio, polini 72cc, 8.4 gears, 28oko, ruima crank, PG short, ported intake, 42.3 rolls

2nd build
86 aero
10-1 secondary gears form a dio.
arisol 46mm
pg short
carb? not yet
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Bear45-70
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Re: oko adapter

Post by Bear45-70 »

Yes, but it uses the stock reeds which are pretty small and will negate most of the bigger carb's effect. You would be better off getting a CT manifold with it's bigger reeds for about $10 more.
Bear 45/70
Image

'83 Aero 80 X 3
'84 Aero 80 X 3

'85 Aero 80
'84 Aero 125 X 2
'84 Aero 125
'84 Aero 125 X 2
'85 Aero 50
'85 Spree
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evilone
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Re: oko adapter

Post by evilone »

Yeah, the extra $10 is worth it. I was curious since i never heard about just the manifold.
2001 Honda Elite
1995 Yamaha Jog
1994 Yamaha Axis

I can't believe
that cop put me
in the backseat
when I clearly
called shotgun.
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scottinscotty
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Re: oko adapter

Post by scottinscotty »

i ordered that manifold and im gonna fab it up to fit on my stock carb... i'll post some pics when i get it and fab it up.. im' thinkin you can get pretty substantial performance out of a stock carb.. and i'm gonna find out.. if not then i'm gonna order a 21mm
72cc polini contesa kit
oko variator with 8.5 gram malossi weights
21mm Black Oko Carb & Ct Manifold
8.44 gear
malossi MHR exhaust
Dio zx trans conversion
1000 center spring
1500 grabbers
sef ramp plate
B9hs plug
GPS 60mph
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Bear45-70
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Re: oko adapter

Post by Bear45-70 »

scottinscotty wrote:i ordered that manifold and im gonna fab it up to fit on my stock carb... i'll post some pics when i get it and fab it up.. im' thinkin you can get pretty substantial performance out of a stock carb.. and i'm gonna find out.. if not then i'm gonna order a 21mm
Honda is known for limiting engine performance by using a small carb. Compare the 1983 thru 1985 Aero 80 carb at 16 mm to the CR80R of the same era with a 24 mm carb. Can you say "Not enough carb?"
Bear 45/70
Image

'83 Aero 80 X 3
'84 Aero 80 X 3

'85 Aero 80
'84 Aero 125 X 2
'84 Aero 125
'84 Aero 125 X 2
'85 Aero 50
'85 Spree
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scottinscotty
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Re: oko adapter

Post by scottinscotty »

worst case.... i have the intake and need the bigger carb.. i thought honda used a 19mm carb on the 2000 elite sr?
72cc polini contesa kit
oko variator with 8.5 gram malossi weights
21mm Black Oko Carb & Ct Manifold
8.44 gear
malossi MHR exhaust
Dio zx trans conversion
1000 center spring
1500 grabbers
sef ramp plate
B9hs plug
GPS 60mph
User avatar
Bear45-70
CBR1000RR
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Posts: 9244
Joined: Mon Jul 23, 1973 10:24 am
Location: Hoodsport, WA.

Re: oko adapter

Post by Bear45-70 »

scottinscotty wrote:worst case.... i have the intake and need the bigger carb.. i thought honda used a 19mm carb on the 2000 elite sr?
I was under the impression that the biggest carb on a 50 cc motor was a 16 mm PB series with the changeable slow jet. Oh and that 16 mm carb has a venturi as tall as the Aero 80 16 mm carb but is about a 1/3 less wide. At least that is the case of the set up I have sitting here in the shop. This is also the reason I hate this measuring carbs by the venturi height and not their air flow.
Bear 45/70
Image

'83 Aero 80 X 3
'84 Aero 80 X 3

'85 Aero 80
'84 Aero 125 X 2
'84 Aero 125
'84 Aero 125 X 2
'85 Aero 50
'85 Spree
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scottinscotty
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Re: oko adapter

Post by scottinscotty »

hmmm... yea' im not quite shure.. i really would like to find out what size carb it is though... anyone know? 2000 honda elite 50 sr stock carb size?
72cc polini contesa kit
oko variator with 8.5 gram malossi weights
21mm Black Oko Carb & Ct Manifold
8.44 gear
malossi MHR exhaust
Dio zx trans conversion
1000 center spring
1500 grabbers
sef ramp plate
B9hs plug
GPS 60mph
User avatar
Bear45-70
CBR1000RR
CBR1000RR
Posts: 9244
Joined: Mon Jul 23, 1973 10:24 am
Location: Hoodsport, WA.

Re: oko adapter

Post by Bear45-70 »

According to the service manual in the "Owners and Service Manual" forum on this site you have a Keihin PA35J which is a 14 mm carb.

My question for you is why don't you have this service manual download to your computer so you can look it up yourself?
Bear 45/70
Image

'83 Aero 80 X 3
'84 Aero 80 X 3

'85 Aero 80
'84 Aero 125 X 2
'84 Aero 125
'84 Aero 125 X 2
'85 Aero 50
'85 Spree
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