My RXP 4 tec project

astro · Mar 17, 2008

Well finally finish my project. It's a Fastrax chassis with a 1500cc 4 stroke out of a Seadoo RXP. Go rid of the super charger that was on it and went with a turbo. It's all driven by a Motec M400 with an Aimsport dash to monitor the engine. Will be running 15lbs of boost at first on premium which should give me over 300 hp. Not sure what the weight is yet but it's not much more than my Vertical Escape.

I'll post more picts as I shoot them.

speeddemon · Mar 17, 2008

Wwwoooooohhhhhhhhhhooooooooo

HE!! ya finaly somonehas done it !!!great job . i have been asking this question forever along with so many others . lets see pixof this bad ride and can u break down what u did and the costs 4 us . just curious !! when u taken her out?
mike

mattymac · Mar 17, 2008

WOW! Been waiting for pix of this beast!!!!!! Looks awesome but would love to see pix of the motor!!

astro · Mar 17, 2008

I'll get some motor shots up tomorrow.

speeddemon · Mar 17, 2008

where u located ? id like to see it in person if close !!

astro · Mar 17, 2008

I'm in California

speeddemon · Mar 17, 2008

astro said:
I'm in California

DAMN guess pix and video will have to do LOL
mike

mattymac · Mar 18, 2008

astro said:
I'm in California

where abouts? You need to bring that beast to fairview!!!!

astro · Mar 18, 2008

Mammoth Lakes

CoyoteGirl · Mar 18, 2008

I have been wondering how that beast is working for you. I spent most of November in Curt's shop droooooooooooooooling (did he clean that off for you?) over your monster.

I even took a few pictures of the build but a having a hard time finding them.

I had sent them to Kawi begging for one of their engines to do the same thing with!

LOL

Looks fantastic! I'm so glad you popped up here!

Where did you end up w/ torque on that thing?

astro · Mar 18, 2008

Don't worry Curt washed the drool off before shipping. Just starting to build a fuel map and working a few bugs out. Unfortunately I don't have a dyno that will handle the power right now but it should be between 300 and 350 ft/lbs.

Before you build one, make sure you have lots of time and a machine shop and a few dollars of course

. I spent about two months straight on it after I got the chassis from Curt.

CoyoteGirl · Mar 18, 2008

astro said:
it should be between 300 and 350 ft/lbs.

That right there deserves a HUMINA HUMINA! lol

Well, the project got kiboshed...... but I figured it would have been a few YEARS of me working on it, if I could have pulled it off.

Where will you be riding that thing?

astro · Mar 18, 2008

mostly in Mammoth and Sonora right now.

Blu Du · Mar 18, 2008

NICE!! what kind HP do you think you will get ought of her

freak58trio · Mar 18, 2008

That is one of the nicest sled's i've seen in a long time

Snowstar · Mar 18, 2008

Very nice sir. Just a couple ?s, why mount the turbo so far from the motor and what kind of RPMs does it turn

astro · Mar 18, 2008

I was trying to get the weight away from the nose of the sled. Running about 8200 RPM. It has the turbo off my 2 stroke- I think I need a bigger cold side!

andy_09 · Mar 19, 2008

wow

that thing is amazing me and a buddy were actually just talkin about it-ive riddin my buddys super charged seadoo and it rips, i get woozy just thinkin about it bein in a sled

Nate · Mar 19, 2008

Thats sweet, whats the fuel mileage on that bastad?

Lunch_Box · Mar 19, 2008

Snowstar said:
Very nice sir. Just a couple ?s, why mount the turbo so far from the motor and what kind of RPMs does it turn

With a properly made equal length long turbo manifold you will actually help spool the turbo quicker.

My RXP 4 tec project

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