purple_people_eater
New Member
Thread Misson Statement: to find and gather all helpful and relavent info relating to and concerning the X4 Seadoo Platform.
ok , now less formally, i'm putting this together to help all X4 buyers/owners can learn/troubleshoot theirs ski's, and in general, learn about them. what makes a X4? how is it different from others? why does everyone love/hate them? how do they handle? do i want to buy one?.....do you want to send me 20 bucks?.... no ok just checking....
but anyway to start off the x4 history:
from wiki:For 1995, the XP now sported the new X-4 hull which was based on race hulls used the previous year. The hull was extended at the rear, narrowed at the bow, and trim strips were added on both sides of the stern. This hull handled far superior to the previous hulls. It had removable trim tabs at the rear which could be shimmed with a kit offered over the counter to trim the hull as desired. Also, a 4 inch long pump spacer was added in front of the pump. While this spacer added slightly to the top speed, it hurt performance in rough water because of the extra time it took to fill the increased volume with water once the pump came unhooked. The engine's displacement was again increased, now to 720cc, rated at 85 horsepower. The 95s used the same upper deck as 94s, aside of some color and graphic changes. The graphics theme moved from green and red to yellow and purple, with the hull seat, intake grills, cowling and handle pole cover becoming yellow, while the grips, boarding handle, rub rail and traction mats moved to purple. The deck remained white.
A limited edition, the XP 800, was offered in 1995 as well. The 800 model featured a 110HP engine based on BRP's snowmobile motors. The new engine was 782cc and was equipped with pressure operated variable exhaust port timing valves, or (Rotax Automatic Variable Exhaust)R.A.V.E. valves, dual carburetors, and a tuned, variable water injected expansion chamber, which helped the XP 800 reach speeds of 57 mph. The 800 was also differentiated by a yellow hull, top deck, seat, cowling and handle pole cover. The cowling had a single gauge and no mirrors. The rear of the hull was pink, and the graphic accents were pink.
The 1996 XP carried over many of the features of the XP 800; the Type 787 R.A.V.E. valve motor, the trim strips, and had yellow upper and lower hulls. The standard XP cowling with adjustable mirrors and gauges returned. The graphic accents were pink, but the rear hull was left yellow.
The handling of all the second generation boats was still characterized by a "lean out" riding style.
X4 - Developed in a joint venture between Bombardier and Bullit Marine to create the perfect closed course racing hull for Sea-Doo's current 2 seater platform. It rode deeper with added strakes and a 3 piece "tunable" ride plate. Designed specifically for the 787 Rotax, however they used it on the 1995 XP (718). The X4 hull is found on the 1995 XP, XP800; 1996 XP; 1996-1999 SPX. Still the king of g-force in runabout class racing. Nothing in it's class even to this day can turn harder. Sport class and standup are the exceptions.
more coming soon!!!
ok , now less formally, i'm putting this together to help all X4 buyers/owners can learn/troubleshoot theirs ski's, and in general, learn about them. what makes a X4? how is it different from others? why does everyone love/hate them? how do they handle? do i want to buy one?.....do you want to send me 20 bucks?.... no ok just checking....
but anyway to start off the x4 history:
from wiki:For 1995, the XP now sported the new X-4 hull which was based on race hulls used the previous year. The hull was extended at the rear, narrowed at the bow, and trim strips were added on both sides of the stern. This hull handled far superior to the previous hulls. It had removable trim tabs at the rear which could be shimmed with a kit offered over the counter to trim the hull as desired. Also, a 4 inch long pump spacer was added in front of the pump. While this spacer added slightly to the top speed, it hurt performance in rough water because of the extra time it took to fill the increased volume with water once the pump came unhooked. The engine's displacement was again increased, now to 720cc, rated at 85 horsepower. The 95s used the same upper deck as 94s, aside of some color and graphic changes. The graphics theme moved from green and red to yellow and purple, with the hull seat, intake grills, cowling and handle pole cover becoming yellow, while the grips, boarding handle, rub rail and traction mats moved to purple. The deck remained white.
A limited edition, the XP 800, was offered in 1995 as well. The 800 model featured a 110HP engine based on BRP's snowmobile motors. The new engine was 782cc and was equipped with pressure operated variable exhaust port timing valves, or (Rotax Automatic Variable Exhaust)R.A.V.E. valves, dual carburetors, and a tuned, variable water injected expansion chamber, which helped the XP 800 reach speeds of 57 mph. The 800 was also differentiated by a yellow hull, top deck, seat, cowling and handle pole cover. The cowling had a single gauge and no mirrors. The rear of the hull was pink, and the graphic accents were pink.
The 1996 XP carried over many of the features of the XP 800; the Type 787 R.A.V.E. valve motor, the trim strips, and had yellow upper and lower hulls. The standard XP cowling with adjustable mirrors and gauges returned. The graphic accents were pink, but the rear hull was left yellow.
The handling of all the second generation boats was still characterized by a "lean out" riding style.
X4 - Developed in a joint venture between Bombardier and Bullit Marine to create the perfect closed course racing hull for Sea-Doo's current 2 seater platform. It rode deeper with added strakes and a 3 piece "tunable" ride plate. Designed specifically for the 787 Rotax, however they used it on the 1995 XP (718). The X4 hull is found on the 1995 XP, XP800; 1996 XP; 1996-1999 SPX. Still the king of g-force in runabout class racing. Nothing in it's class even to this day can turn harder. Sport class and standup are the exceptions.
more coming soon!!!
![042001_1114[03].jpg](https://www.seadooforum.com/data/attachments/6/6317-38596ff3915e3a6dad4c4dd3bb7b4697.jpg?hash=OFlv85FeOm "042001_1114[03].jpg")
