WAVERAIDER 701 MODS
SKEE 77
Subject: WAVERAIDER 701 MODS
From: ske...@aol.com (SKEE 77)
Date: 3 Oct 1996 04:53:23 -0400
Message-ID: <52vuu3$3...@newsbf02.news.aol.com>
I have been asked by a few people out here in the newsgroup what I have
done to my waveraider 701. I bought the boat new in june of 94 and rode it
for about 10 hours before i started the mods on the boat. The first mod I
performed to the boat was installing a scat trac 11/19 prop which helped
the accelaration of the craft drastically, especially with 2 up on the
boat. It actually helped the top speed of the boat by a half mph. The next
performance upgrade was to install a set of vortex flame arrestors. I had
to remove the oil pump from the craft due to no place for the oil injector
lines to connect. While I was at it i removed the choke plates from the
carbs. This mod really helped the throttle response of the boat and also
picked the speed up about a mph.
From there the only place to go was inside the motor. I did several mods
including milling and reshaping the domes. I also raised the exhaust port
70 thousanths (to increase midrange power and top speed) and installed
r@d reed stuffers inside the reed valves, (to enhance throttle response).
I also changed the low speed jet to a 75 and the high speed jet to a
132.5, while decreasing the pop off pressure to 35 pnds.
(the stock jetting is 70, 120 in the front carb and 130 in the back with
55 pnds of pop off pressure. To inhance the handling of the boat I cut
off the stock ride plate, which makes the boat a little shorter and
decreases the turning radius of the boat and allows the bow to rise
farther to decrease the wetted area of the boat at high speed.
The performance increased drastically, both accelaration and top speed.
and was alot more fun to ride.
The following spring I purchased a coffman pipe and installed it...(THIS
WAS A BITCH) The midrange accelaration and top speed of the boat was
inhanced but was soft down at low rpm. I played with the jetting but could
not seem to cure the soft throttle response at low rpm. Also had a bog
when making sharp left hand turns and it drove me nuts trying to cure it.
I leaned down the low speed jet to a 72.5 and it seem to help a bit but
did not fix the problem. Somebody recommended the rear exhaust kit from
riva and it fixed the problem. It seems that when making left hand turns
with the raider, the water from the jet pump is sprayed into the exhaust
outlet in the pump cavity. But the riva kit fixed the problem as well as
the pump cavity stays clean now since the exhaust is now exiting from the
rear. Late in the summer I also installed a riva extended turn nozzle on
the pump, which helped shorten up the turning radius of the boat.
This spring I tore the motor for a rebuild. I bored the motor 1mm and
did some work to the transfer ports I did not raise them but cleaned them
up and squared them up, (like a Kawasaki). Also while boring I had the
deck machined 10 thousanths to clean it up. I also sent my carbs to jet
craft engineering to have them taper bored and installed a set of k@n
flame arrestors which the adaptors were machined with carbs. Now this boat
had all the throttle response and low end accelaration that was missing
when I installed the coffman pipe. It ran great.
During mid summer I removed the pump assembly and had
it blueprinted by a friend of mine that races for polaris. One of my
biggest gripes about the boat was trying to keep the boat hooked up in
rough water. I can't even begin to tell you how much this helped rough
water hook up. It did not make any difference in smooth water but it made
the boat alot more controlable and increased top speed drastically in
rough water. For example a friend of mine has a slightly modified 100
raider and when we would race in smooth water I would have about a 1/2 mph
on the boat but as soon as we would hit some chop, he would start pulling
away. After blueprinting the pump, when we raced I would still have about
a 1/2 mph on him in smooth water, and when we would hit the chop I WOULD
START PULLING AWAY FROM HIM. I would recommend this mod on the raider as
it makes it a safer more controllable craft.
This about sums it up about my raider. If you wondered how it has fared
against the newer big cc craft I have raced about every new craft on the
market and found nothing that would out accelarate it or run with it on
top speed, this includes the kawi 1100 (what a slow pig out of the crate)
and the polaris 900. The only craft that is competitive with it is the 96
sea doo xp, which I went out immediatly and bought one and will start on
it next year. The only thing I have done to it is bypassed some exhaust
water and picked up some mid range and about a 1/2 mph. Even with all the
new craft on the market I think I will hang on to my raider, it is alot
better for 2 up riding than the sea doo. I spent alot of time on it and
still looks like the day it came out of the show room. I have read some
hop up articles for this boat from other people on the net and found that
most of them a bunch of hype and well I would question the accuracy of the
test results. One of the few out here that I would do business with would
be Harry Klemm, this guy is honest about peformance and will tell you
straight up about what to expect with his kits and not sell you a bunch of
hype. In fact I am going to let him do the work on my xp motor in early
spring. (I am going to let somebody else due it this time)
TOP SPEEDS (HOT NUMBERS)
1. 53.9 STOCK
2. 54.5 INCREASED ACCEL. THROTTLE RESPONSE. (11/19 PROP)
3. 55.2 INCREASED ACCEL. THROTTLE RESPONSE. (FLAME ARRESTORS AND CHOKE
PLATE REMOVE).
4. 57.5 INCREASED ACCEL. (MILL HEAD, RAISE EXHAUST PORT, REED STUFFERS AND
REJET CARBS)
5. 59.5 INCREASED MID RANGE BUT SOFT ON THE BOTTOM END. (COFFMAN PIPE)
6. 60.1 AT 7090 RPM AND HELL OF ALOT OF FUN. INCREASED ACCEL AND GREAT
THROTTLE RESPONSE. (BORED 1MM, RESHAPE TRANSFER PORTS, TAPER BORE CARBS
WITH K@N FILTER.
Skee
slade_zapp
In article <531mgp$k...@newsbf02.news.aol.com>, ske...@aol.com says...
So, have you raced any Raider 1100's on this?
What was the outcome?
Slade
SKEE 77
It accelarates alot faster than a stock 1100 and is about 1mph faster on
top.
Frank DuBois
problem on the stock wave raider. I'm in the process of building a
raider using a carbon fiber hull that I picked up cheap off the 95 expert
class tour. At this point its powered by 701 coponents scavenged off a
wreck. Apparently, this hull lets you pull such G-forces in left turns
that the fuel inlet diaphragm shuts the fuel supply needle. I was
actually stalling in a hard left hand turn. The solution was dropping
the popoff pressure down to 35 psi (I already had a Riva external
exhaust). This solved the problem. ANother solution is to looke for some
way of remounting the carbs so that the diaphragms are perpendicular to
the drive shaft. I've heard that there are aftermarket kits for this but
haven't seen em. Otherwise the engine and propulsion is stock except
for a factory pipe off a Super jet (stock pipe won't fit because the
engine sits about six inches further back in the compartment). Just mw
two cents. frank