switching to full spec

chrisdoc0608

chrisdoc0608

insulting
Location
rocky mount, nc
i got my hands on a single 48 full spec. What kind of gain could i expect from switching from a 46sbn? what would this upgrade be comparable to? Im running heavily ported 62t cases 61x cylinder 31cc domes at 195 psi riva single mani w/ dual stage cf boysen reeds coffman pipe and all the other misc. goodies
 
Philip Clemmons

Philip Clemmons

Owner, P&P Performance
Location
Richmond, Va
You should see a viscous and immediate hit off the bottom!

Super crisp and snappy! Dont expect the smooth, electric motor like feel of stockers though...........
 
K

Kennay

Squarenose for the _____
Location
Myrtle Beach, SC
Philip Clemmons said:
You should see a viscous and immediate hit off the bottom!

Super crisp and snappy! Dont expect the smooth, electric motor like feel of stockers though...........
Click to expand...

He is using a single and he isn't switching from stockers, he is switching from a single 46.


Goodluck Chris. Can't wait to ride with you and Adam again
 
Matt_E

Matt_E

steals hub caps from cars
Site Supporter
Location
at peace
I switched one of my motors from a single 48 Full Spectrum to a single Mikuni SBN46 - so the opposite of what you're talking about.

Not much difference between the two, if any. Just my experience with my particular setup.
 
keefer

keefer

T1
Location
Tennessee
I switched from dual SBN 46s to dual Full Spec 48s and I was impressed with the crispness and improved response throughout the powerband. You should see improvement if you jet it correctly for your setup. :fingersx:
 
Philip Clemmons

Philip Clemmons

Owner, P&P Performance
Location
Richmond, Va
Matt_E said:
I switched one of my motors from a single 48 Full Spectrum to a single Mikuni SBN46 - so the opposite of what you're talking about.

Not much difference between the two, if any. Just my experience with my particular setup.
Click to expand...

My experience was with a dual 48 set up from a stock dual 38 set up.........All the difference in the world on my boat. Hardest hitting carbs I have ever ridden. I have run Novis, SBNs, Buckshots,etc..................

Ed himself said they will never be as smooth as a SBN (or stocker), but will hit harder and snappier.

I think you will be pleased, but thats just my opinion.
 
Philip Clemmons

Philip Clemmons

Owner, P&P Performance
Location
Richmond, Va
Kennay said:
He is using a single and he isn't switching from stockers, he is switching from a single 46.


Goodluck Chris. Can't wait to ride with you and Adam again
Click to expand...

Kennay, a single 46 SBN may be slighty larger, but is essentially a stock type carb. Although the butterfly is slightly larger, the circuity and metering characteristics are the same. Full specs are designed to hit off the bottom harder and carburate cleaner.

I know whats on his ski, as I have ridden it. I also know how my Full specs hit, as I have ridden them.
 
Matt_E

Matt_E

steals hub caps from cars
Site Supporter
Location
at peace
keefer said:
I switched from dual SBN 46s to dual Full Spec 48s and I was impressed with the crispness and improved response throughout the powerband. You should see improvement if you jet it correctly for your setup. :fingersx:
Click to expand...


Mine was jetted per Brazina's personal instructions. :fingersx:


Ed made them and tuned them to be run in pairs. How do the singles work?
Click to expand...
Ed will tell you to run duals. But, if you ask him, he will give you specs for a single application.
 
Last edited:
K

Kennay

Squarenose for the _____
Location
Myrtle Beach, SC
Philip Clemmons said:
Kennay, a single 46 SBN may be slighty larger, but is essentially a stock type carb. Although the butterfly is slightly larger, the circuity and metering characteristics are the same. Full specs are designed to hit off the bottom harder and carburate cleaner.

I know whats on his ski, as I have ridden it. I also know how my Full specs hit, as I have ridden them.
Click to expand...

That is great and all, but I am voting for not as dramatic of a change as you described above.
 
GDFL

GDFL

Location
Melbourne, FL
Kennay said:
That is great and all, but I am voting for not as dramatic of a change as you described above.
Click to expand...

agreed. I had to use a 46 while waiting on my full spec 49 single. Don't get me wrong, I love the full spec, but it's not a lightswitch difference. You'll notice it and like it, but don't expect anything tremendous.
 
Philip Clemmons

Philip Clemmons

Owner, P&P Performance
Location
Richmond, Va
Kennay said:
That is great and all, but I am voting for not as dramatic of a change as you described above.
Click to expand...

You may very well be right.............it will be interesting to see.

On MY boat, the difference was ALL in the hit on the bottom. There was little power gain (if there was I couldnt tell), but the response and hit was like a new ski!

Maybe the single platforms are less sensitive. Im sure Chris will let us know how it works out for his combo!
 
Matt_E

Matt_E

steals hub caps from cars
Site Supporter
Location
at peace
GDFL said:
agreed. I had to use a 46 while waiting on my full spec 49 single. Don't get me wrong, I love the full spec, but it's not a lightswitch difference. You'll notice it and like it, but don't expect anything tremendous.
Click to expand...


That's pretty much what I was trying to say.
Yes, a difference, but certainly not dramatic.
 
You must log in or register to reply here.
Top Bottom