701 vs 800 sxr motor platforms

[CarFanatic]

I sold my team scream sj this year, and I am wanting to build something in the next year again. I am looking into building a EME q8. I"m just a rec rider who rides flat water. The stock engine eme with pump and pipe is pretty impressive. I have never ridden a sxr motor just yamis.. I know eme makes both platforms yami or kawi.. I'm not sure what is the best platform to start with 701 or 800?

 

[Matt_E]

701 vs 800 sxr motor platform

800 sxr motor vs 701 based motor

 

[Lucaumpits]

701

 

[Proformance1]

Why not throw the Polaris based 777 motor in there also, as this is what Malone prefers.

 

[CarFanatic]

I obvioulsy and going to need a donnor ski to start the project.. thats what I'm trying to figure out now..

 

[jetski9010]

Just by a complete ski from him and be done with it. Instant backflips haha.

 

[CarFanatic]

complete ski would prolly be way more then swaping from a doner

 

[Brenden]

if your going to run the mag pump (142) you might as well run the superjet motor in it as your going to have to get ride of a pump and hull if you tore down a kawi anyway....from my experience all you need when building a q8 from yamaha you need to convert

midshaft
Driveshaft
steering cable and turnplate...(right side to left)
couplers
Kawi pump /mag
and end nozzle
Kart tank
small battery

most these parts can be had through eme but if you have access to them go for it

everything else from a sj bolts right up
Motor
Bpipe

Ported 701 with a bpipe and stock carbs ada head will have plenty for a backy

 

[CarFanatic]

hmm... on there site they have model specific hulls now. kawi, yami, or polaris. would I still need all those conversion parts?

 

[CarFanatic]

how much are the mag pumps?

 

[Brenden]

Not sure if you can use the yamaha pump yet or if the hull can be setup for use of yamaha pump.

Probably meaning its compatible for yamaha motors, kawi motors, and polaris motors.

Mag pumps are 1000-1400ish range with prop i believe
then trim can be 500-700

maybe by the time your ready to build a hull it may be compatible for that pump

if i were you...call eric and talk to him

 

[djkorn1]

if your keeping it pretty stock...SXR motors are faster.

 

[kevbo]

Your choice in pumps will be as important as the engine. Hopefully the hull has a superjet pump setup. As far as the engines, a 701 will have to be ported to make the same power as a stock 800. After that the 800 has better response on pump gas with the stock ignition.

 

[CarFanatic]

hmm... I loved my team scream 735.. so I like yami motors. so what I gather is I will need a kawi pump to run, or step up to a mag pump..

 

[CarFanatic]

if your going to run the mag pump (142) you might as well run the superjet motor in it as your going to have to get ride of a pump and hull if you tore down a kawi anyway....from my experience all you need when building a q8 from yamaha you need to convert

midshaft
Driveshaft
steering cable and turnplate...(right side to left)
couplers
Kawi pump /mag
and end nozzle
Kart tank
small battery

most these parts can be had through eme but if you have access to them go for it

everything else from a sj bolts right up
Motor
Bpipe

Ported 701 with a bpipe and stock carbs ada head will have plenty for a backy

that looks like a tight fit on that b pipe!

 

[Brenden]

thats actually the longest bpipe you can get...the one done by xmw with the new end put on

its a limited chamber and yes there is a stock waterbox up there

 

[CarFanatic]

ya I really like xmetals motors. I had there full set done by them.

 

[CarFanatic]

IF I go with a kawi 800... who is good at making free style motors for them?

 

[Matt_E]

If I were to build a Kawi 800 motor, I'd take a good hard look at Kommander Ind. (Steve Webster, formerly of JSU).
I'd also consider Jetworks just because I am happy with the SJ motors he's done for me in the past.

 

[CarFanatic]

so if I buy a eme q8

stock for stock what motor would hold the best bang

800
or
701

both running a b pipe.