FX-1 Fx1 Trivia Question
- Thread starter wetjet701
- Start date
122 i think
infamy
Westside Freeride
mine is 144 , but thestock one is 122
- Location
- Rincon Beach
Mine have 144mm pumps,:147:but stock is a sad useless 122mm
Is there such a thing as a stock FX-1 pump :thinking: Its been a long time since I've seen one :dunno:
- Location
- Brigantine, NJ
It happens to be the same size as the old Kawi 440 pumps.
It is a real mystery why they actually invested in the development of another (smaller) pump for the FX when they had the Superjet pump sitting on the shelf????
It is a real mystery why they actually invested in the development of another (smaller) pump for the FX when they had the Superjet pump sitting on the shelf????
- Location
- S.E Michigan
Stock is 122mm. This winter I'm putting a 140mm kawi pump in mine. I owe it all to Special FX. He did the swap and has a great write up in the driveline section. I will post pics when I get started. Thanks again Special FX.:bigok:
Idok
F1pro
- Location
- Nations oldest muthaF+++kin city
My next big upgrade will be the pump. I'm going to try to put the 144mm pump in there. I've been told, night and day difference. But what will I notice? I want more low end, I don't care about top speed, its plenty fast enough for me as it sits. I already have the usual upgrades minus a enhancer and port work.
infamy
Westside Freeride
with your b-pipe and head , you should definitely notice a difference , but with a stock motor you wont notice any difference. thats why they didnt need to put a bigger pump in the fx-1, there isnt any improvement with a bigger pump on a stocker.
then why did they put a 144mm pump on the SJ with the same engine? i dont think the difference in weight, between the fx1 and SJ, merits a 22mm difference in pump size. it seems to me as though yamaha had some R and D cash to spend.
Idok
F1pro
- Location
- Nations oldest muthaF+++kin city
I gotta call BS on that one.......
my fx still has a stock pump....but when I hop on a SJ the BIGGEST difference I can feel is the thrust...
a SJ can cruise around @ 1/4 throttle, the fx needs to be kept at 1/2 or 2/3's.......
then there's the whitewater hookup.....it is NONEXISTANT with the stock fx pump
if there was no difference, a SJ would have gotten the smaller pump as well......
LBE
Eddie Would Go.
- Location
- Charlotte, NC
I feel like putting a 144 pump in the FX1 is the equivlant of putting a mag pump in a SJ. Whitewater hook up and recovery were improved alot, IMO.
Flash-FX
No Square..No Round..FX-1
- Location
- South Jersey Shore
X2
The very first day I rode My FX-1 (in 1995) in the surf I was totally disappointed with the hook up. Ever since that time there was a ongoing battle to figure out a way to make it work. It's all better now. :cheer:
I do notice one thing, When I ride with 3 or 4 of my other FX buds (boats with varying modifications) on a fast creek ride is when they are out of fuel, I have like 2" from the bottom left in my tank. I'm running dual 48mm Full Specs that are supposed to consume more fuel than a single carb....?? :dunno:
better pump efficiency? No complaints there...