44mm or 48mm BBK

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

User avatar
fastplastic
CB900F
CB900F
Posts: 1161
Joined: Tue May 11, 2010 7:37 pm
Location: Manistee, MI

Re: 44mm or 48mm BBK

Post by fastplastic »

do and dio swap if you want speed if not rebuild stock or with the 44mmkit........
thistleb
Noob
Noob
Posts: 14
Joined: Sun Mar 20, 2011 3:39 pm
Location: Boston,MA

Re: 44mm or 48mm BBK

Post by thistleb »

Fastplastic, Why do you recommend the 44mm and not the 48?
User avatar
spewya
Spree
Spree
Posts: 294
Joined: Mon Aug 02, 2010 10:47 pm
Location: macomb county michigan
Contact:

Re: 44mm or 48mm BBK

Post by spewya »

thats whay i was thinking but i didnt want to cause an uproaring ..lol :ndance:
spree parts for sale

still learning alot ..thanks to all on this fourm

if you have a good spree jug ..pm me if you want to sell it
User avatar
Bear45-70
CBR1000RR
CBR1000RR
Posts: 9686
Joined: Mon Jul 23, 1973 10:24 am
Location: Hoodsport, WA.

Re: 44mm or 48mm BBK

Post by Bear45-70 »

spewya wrote:thats whay i was thinking but i didnt want to cause an uproaring ..lol :ndance:
I agree. Unless you are gonna do a bigger carb and an exhaust, stick with the 44mm BBK and gears.
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
thistleb
Noob
Noob
Posts: 14
Joined: Sun Mar 20, 2011 3:39 pm
Location: Boston,MA

Re: 44mm or 48mm BBK

Post by thistleb »

I have no interest in increasing speed, just need a little more power to pull my butt up the hills of NH during the beer runs to the corner store. I think the 44mm is probably the best option for me.
User avatar
Trafficjamz
CBR1000RR
CBR1000RR
Posts: 5353
Joined: Tue Jul 14, 2009 7:53 pm
Location: Eastlake, MI
Contact:

Re: 44mm or 48mm BBK

Post by Trafficjamz »

thistleb wrote:Fastplastic, Why do you recommend the 44mm and not the 48?
Less tuning issues with the 44 vs th 48 :imo:
The 48 vibrates alot more than the 44
new best 1/8th mile time 9.647 seconds @67.155 mph 310lbs total weight
User avatar
fastplastic
CB900F
CB900F
Posts: 1161
Joined: Tue May 11, 2010 7:37 pm
Location: Manistee, MI

Re: 44mm or 48mm BBK

Post by fastplastic »

my 44mm kit was amazing i had two buddys that had the 48's with stock carbs and pipes and they where horrible one blew up other was a pain to tune so bad in which he sold it and went and bought an elite.....
User avatar
spewya
Spree
Spree
Posts: 294
Joined: Mon Aug 02, 2010 10:47 pm
Location: macomb county michigan
Contact:

Re: 44mm or 48mm BBK

Post by spewya »

yeah i wasnt planning on getting a bigger carb but i was gona port the intake and try and make a tuned pipe with the hp raz exaust i have .. would that be a good match up with the 44 and gears
spree parts for sale

still learning alot ..thanks to all on this fourm

if you have a good spree jug ..pm me if you want to sell it
User avatar
fastplastic
CB900F
CB900F
Posts: 1161
Joined: Tue May 11, 2010 7:37 pm
Location: Manistee, MI

Re: 44mm or 48mm BBK

Post by fastplastic »

spewya wrote:yeah i wasnt planning on getting a bigger carb but i was gona port the intake and try and make a tuned pipe with the hp raz exaust i have .. would that be a good match up with the 44 and gears
what are you lookin to do with it?
User avatar
spewya
Spree
Spree
Posts: 294
Joined: Mon Aug 02, 2010 10:47 pm
Location: macomb county michigan
Contact:

Re: 44mm or 48mm BBK

Post by spewya »

fastplastic wrote:
spewya wrote:yeah i wasnt planning on getting a bigger carb but i was gona port the intake and try and make a tuned pipe with the hp raz exaust i have .. would that be a good match up with the 44 and gears
what are you lookin to do with it?
what am i looking to do to what???
spree parts for sale

still learning alot ..thanks to all on this fourm

if you have a good spree jug ..pm me if you want to sell it
User avatar
bc117
Spree
Spree
Posts: 174
Joined: Thu Jan 13, 2011 8:04 pm
Location: camas, wa

Re: 44mm or 48mm BBK

Post by bc117 »

he wants to know how you are gonna be riding your spree and what you want to see performance wise from it
1985 aero 50
ported
custom exhaust
ruckus vario
1K polini clutch springs
hopefully nh80 powered soon!
User avatar
fastplastic
CB900F
CB900F
Posts: 1161
Joined: Tue May 11, 2010 7:37 pm
Location: Manistee, MI

Re: 44mm or 48mm BBK

Post by fastplastic »

bc117 wrote:he wants to know how you are gonna be riding your spree and what you want to see performance wise from it
Thank you :thumbwink:
User avatar
spewya
Spree
Spree
Posts: 294
Joined: Mon Aug 02, 2010 10:47 pm
Location: macomb county michigan
Contact:

Re: 44mm or 48mm BBK

Post by spewya »

im gona be riding on flat ground , performance wise i want some speed and acceleration .. as much as i can get with not a big budget
spree parts for sale

still learning alot ..thanks to all on this fourm

if you have a good spree jug ..pm me if you want to sell it
User avatar
fastplastic
CB900F
CB900F
Posts: 1161
Joined: Tue May 11, 2010 7:37 pm
Location: Manistee, MI

Re: 44mm or 48mm BBK

Post by fastplastic »

well 44mm and gears would be best bet should be able to get a solid 38mph... with hill climming power you need anything more is just a waste of time and money on the nq50 :thumbwink:
User avatar
tazland001
Board Supporter
Board Supporter
Posts: 1333
Joined: Thu Apr 30, 2009 11:46 pm

Re: 44mm or 48mm BBK

Post by tazland001 »

The 48mm kit is stronger in my opinion than the 44mm.

Hey fast did your friends break in those kits? If they did not then thats what happens. If the kits are not broke in they will soft seize up to 3 times and then goodbye compression. I am not aware of any new BB kits that you can wot right out of the box. And dont worry fast I wont stop until the spree hits 50mph. We all know how you just tell everyone to swap in a dio engine. :bs: lol.

Taz
Post Reply