big bore kit and gears?

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.

Moderator: Moderator

Post Reply
killingspree1985
Noob
Noob
Posts: 15
Joined: Mon Apr 18, 2011 12:08 pm
Location: michigan

big bore kit and gears?

Post by killingspree1985 » Tue Aug 14, 2012 6:05 pm

my 1985 spree 50 runs great,but tops out at 30-32mph. Id like to make it go about 40mph without having to upgrade the carb. which big bore kit and what gears should i use? I weigh 165lbs if that matters.Also this spree is bone stock .....what else should i do to it to make sure it stays reliable? Should i run premium? exhaust upgrades?

User avatar
Bear45-70
CBR1000RR
CBR1000RR
Posts: 9666
Joined: Mon Jul 23, 1973 10:24 am
Location: Union, WA.

Re: big bore kit and gears?

Post by Bear45-70 » Tue Aug 14, 2012 6:17 pm

An '85 that runs 30-32?????? that's fast my did 27 stock and with a tire change 28 mph.
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

killingspree1985
Noob
Noob
Posts: 15
Joined: Mon Apr 18, 2011 12:08 pm
Location: michigan

Re: big bore kit and gears?

Post by killingspree1985 » Tue Aug 14, 2012 8:50 pm

yup and i actually had it faster when i held her wide open for over 5 min on a long stretch or road but most the time just a hair over 30mph......any help on getting it faster? but not just faster is like to keep it reliable and i dont want to blow her up.... i mean she is an old girl. oh and it only has like 600 original miles on it. and if i put a bbk and gears can i install a kick start? bc the 1985 doesnt have a kickstart.

abreen89
CB900F
CB900F
Posts: 1324
Joined: Wed Jan 18, 2012 7:32 pm
Location: Graham,WA
Contact:

Re: big bore kit and gears?

Post by abreen89 » Tue Aug 14, 2012 10:56 pm

killingspree1985 wrote:yup and i actually had it faster when i held her wide open for over 5 min on a long stretch or road but most the time just a hair over 30mph......any help on getting it faster? but not just faster is like to keep it reliable and i dont want to blow her up.... i mean she is an old girl. oh and it only has like 600 original miles on it. and if i put a bbk and gears can i install a kick start? bc the 1985 doesnt have a kickstart.
you can install a kickstart its an easy bolt on. The first step i would take is to get the an upgraded intake and reads. then if you get a bbk and gears you can upgrade the carb aswell. Also AX 24 belt if you do all those yu should be up around 40 mph.
'89 Honda Elite SB50p STOCK
'85 Honda Spree NQ50 STOCK sold
'85 Honda Spree NQ50 48mm bbk, taz gears, 18mm carb w/ ct intake
'86 Honda Aero NB50 Stock In The Works ;)
'86 Honda Aero NB50 Stock

killingspree1985
Noob
Noob
Posts: 15
Joined: Mon Apr 18, 2011 12:08 pm
Location: michigan

Re: big bore kit and gears?

Post by killingspree1985 » Sat Aug 18, 2012 3:35 pm

Where can i get the upgrade for the reads and intake? mainly the reads because ill probably polish the intake and call that good.Also where can i find a kickstart assembly?

veedubh20
CB900F
CB900F
Posts: 2013
Joined: Sat Dec 31, 2005 7:00 pm
Location: Honolulu paradise island

Re: big bore kit and gears?

Post by veedubh20 » Sat Aug 18, 2012 3:41 pm

dude swap in the dio motor, will pull hard on your 165 *!

abreen89
CB900F
CB900F
Posts: 1324
Joined: Wed Jan 18, 2012 7:32 pm
Location: Graham,WA
Contact:

Re: big bore kit and gears?

Post by abreen89 » Sun Aug 19, 2012 9:28 pm

killingspree1985 wrote:Where can i get the upgrade for the reads and intake? mainly the reads because ill probably polish the intake and call that good.Also where can i find a kickstart assembly?
the honda elite sb50p intake and reeds will fit you will have to add another nipple for the oil though really easy to do. AS for the kickstart you can get from members on this site and they pop up on ebay quite often.
'89 Honda Elite SB50p STOCK
'85 Honda Spree NQ50 STOCK sold
'85 Honda Spree NQ50 48mm bbk, taz gears, 18mm carb w/ ct intake
'86 Honda Aero NB50 Stock In The Works ;)
'86 Honda Aero NB50 Stock

User avatar
Bear45-70
CBR1000RR
CBR1000RR
Posts: 9666
Joined: Mon Jul 23, 1973 10:24 am
Location: Union, WA.

Re: big bore kit and gears?

Post by Bear45-70 » Sun Aug 19, 2012 10:09 pm

abreen89 wrote:
killingspree1985 wrote:Where can i get the upgrade for the reads and intake? mainly the reads because ill probably polish the intake and call that good.Also where can i find a kickstart assembly?
the honda elite sb50p intake and reeds will fit you will have to add another nipple for the oil though really easy to do. AS for the kickstart you can get from members on this site and they pop up on ebay quite often.
The difference between the stock Spree and the SB50 reeds isn't enough to make the expense and work worth the effort. If you get a 1/2 mph you would be extremely lucky.

If you want real improvement, adapt a CT intake and at least an 16mm carb or better yet an 18 mm carb. Otherwise you are wasting your time and money.

FYI, polishing the intake is old school and is now known to be counterproductive. Polish the exhaust if you must polish something.
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

killingspree1985
Noob
Noob
Posts: 15
Joined: Mon Apr 18, 2011 12:08 pm
Location: michigan

Re: big bore kit and gears?

Post by killingspree1985 » Mon Aug 20, 2012 11:36 am

But if you look at the stock intake there are soo many restrictions..... with a little mill work i could open it up quite a bit. Or am i wasting my time as far as that goes? and my main problem is finding links for these upgrades.

thekingof7
Goped
Goped
Posts: 98
Joined: Fri Mar 30, 2012 8:33 pm
Location: Wisconsin

Re: big bore kit and gears?

Post by thekingof7 » Mon Aug 20, 2012 3:27 pm

Im in a similar boat as the OP. (stock 87 spree)
I was considering just buying a nice bbk, but I am unsure of whether I will be needing to throw more into the scoot after the cylinder has been upped. Will I need a new crank, bigger carb, new reeds, etc?
Or will the thing run okay with everything essentially stock and a nicely broken-in new cylinder?

abreen89
CB900F
CB900F
Posts: 1324
Joined: Wed Jan 18, 2012 7:32 pm
Location: Graham,WA
Contact:

Re: big bore kit and gears?

Post by abreen89 » Mon Aug 20, 2012 4:44 pm

killingspree1985 wrote:Where can i get the upgrade for the reads and intake? mainly the reads because ill probably polish the intake and call that good.Also where can i find a kickstart assembly?
this intake http://www.ebay.com/itm/280518183894?ss ... 477wt_1417

this carb http://www.ebay.com/itm/Dio-ZX-Shadow-D ... 057wt_1162

(i wouldnt pay that much for the carb though) Then you will need to get an adapter made.
'89 Honda Elite SB50p STOCK
'85 Honda Spree NQ50 STOCK sold
'85 Honda Spree NQ50 48mm bbk, taz gears, 18mm carb w/ ct intake
'86 Honda Aero NB50 Stock In The Works ;)
'86 Honda Aero NB50 Stock

User avatar
patthesoundguy
Moderator
Moderator
Posts: 3164
Joined: Mon Mar 29, 2010 11:38 am
Location: Nova Scotia, Canada
Contact:

Re: big bore kit and gears?

Post by patthesoundguy » Wed Aug 22, 2012 9:38 am

Rough up the intake with a bluestone make it uniform and maybe take the sharp edge off just inside the intake where it attaches to the carb. I have later 86 87 reeds which I think are sb50 reeds. I ported a spare intake. I also had fibreglass reeds untill they shreded, the stock metal ones work fine anyway.
Dude! Ya Can't Fix Stupid!
84 Spree stock
84 Spree Dio AF18E MHR Cylinder Arrow Pipe 28mm OKO
80 Express, 47mm DR BBKit, Weak Ends Intake, Boyesen Dual stage reeds, 19mm Delorto carb, MLM pipe
79 Express
85 Aero 80 stock
84 elite 125 stock

Post Reply