- Location
- Costa Mesa CA
Is it possible without serious reglassing?
800 sxr js550 swap?
- Thread starter Ryan Declark
- Start date
holygoat
Site Supporter
- Location
- Indiana, USA
I don't see why not. Afaik SXR800 and 750SX are very similar motors.
BUT - Unless you want to fork over $2-300 for the right prop the pump will be seriously underpowered. And even when you do, it's still lacking.
BUT - Unless you want to fork over $2-300 for the right prop the pump will be seriously underpowered. And even when you do, it's still lacking.
- Location
- Costa Mesa CA
Because of pump tunnel?
Big Kahuna
Administrator
- Location
- Tuscaloosa, AL
people have been doing 750 swaps into 550's for years. No difference. Just got to find a tall prop.
- Location
- Charlotte, NC
At the end of the day, no.matter how much time and money you put into, it's still a 550. A larger lore stable and powerful hull that can handle the Power and put it to the water is the better choice
- Location
- La Crosse, WI on the BIG River
I know I saw an 800 swap on pwctoday years ago.
The exhaust is also a limiting factor. Most of the 750 swaps are using 650 exhausts.
The exhaust is also a limiting factor. Most of the 750 swaps are using 650 exhausts.
holygoat
Site Supporter
- Location
- Indiana, USA
No hate and I don't want to be that guy, but the pump and the hull will always be lacking.
I did a 750 swap 550, and quickly realised that the pump was heavily restrictive, combined with a 650 pipe that wouldn't let it breathe.
I could get a prop for $200, or do a pump swap for somehwere in the region of $6-800.
I decided to sell the whole lot and got a Superjet, and then I'm now experimenting with superjet driven aftermarket hulls. At the end of the day there's no right or wrong answer, but you will always be riding a hull and pump combo designed in the 70s. Things have come a long way.
I did a 750 swap 550, and quickly realised that the pump was heavily restrictive, combined with a 650 pipe that wouldn't let it breathe.
I could get a prop for $200, or do a pump swap for somehwere in the region of $6-800.
I decided to sell the whole lot and got a Superjet, and then I'm now experimenting with superjet driven aftermarket hulls. At the end of the day there's no right or wrong answer, but you will always be riding a hull and pump combo designed in the 70s. Things have come a long way.
bored&stroked
Urban redneck
- Location
- AZ
Unless your one of those weird die hard 550 people then don't waste your time. Otherwise its not different then a 650 or 750 swap.
- Location
- Costa Mesa CA
So after getting beat up by my 550 all week. I'm no longer considering doing anything more with 550 hulls. I'm so fat and out of shape it's a damn chore just getting the boat out of the water and keeping it straight. Fun little boats but under no circumstances am i taking the thing for a long ride. I'm gonna stick to my tigercraft v3 build.
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
I am glad I am not the only one that thinks those guys are weird , also the guys that race riding lawnmowers and Kawasaki SC's , but hey what do I know .
I rode one of Dave Gordons old race skis a few years back , it was not fun to ride to say the least , how anyone raced that thing is beyond the compression of us mere mortals.
hornedogg79
dodgin' bass boats
Humans were much more athletic 30yr ago.
holygoat
Site Supporter
- Location
- Indiana, USA
I absolutely loved riding my 440, I just wanted it to be faster. But I really did love how hard they made you work.
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
I built a ski with a 440 pump and a 550 reed motor 1991, I rode that ski for years , then I put the engine in my 300SX and rode for another couple of years.
Between a 440-550 and a 550 powered 300SX I will take the 300SX hands down any day of the week.
Between a 440-550 and a 550 powered 300SX I will take the 300SX hands down any day of the week.
- Location
- Costa Mesa CA
I was thinking when building this ski, ehh if I like the boat maybe I'll race the stock 550 class. My gut, forearm pump and tired body says it's not worth it bro. Hats off to the 550 riders. Different animal. I rode an fx1 all my life and even that didn't beat me up as bad as this 550.