09-19-2006, 08:13 PM #1
- Join Date
- Aug 2006
- Youngs Point, Ontario, Canada on the awesome TrentSevern Waterway
Riva vs Rotax Racing kits which to use ?
I spent some time looking at performance kits and reading this forum, there is a wealth of knowledge out there and you guys are great for achieving the speeds that you are. I posted a thread a few weeks ago and recieved lots of good feedback regarding modifying my stock 2004 rxp. I have some questions, the Riva stage II kit covers a bit of everything, prop/intake grate/intake/exhaust mods etc, where the RR Stage II kit is strictly mods to the engine and supposed to give +45hp according to racetech ( www.rotaxracing.ca ) which I found surfing the net last week. I am now wondering is if anybody has any experience with the rr stage II kit, and what can be expected by blending this kit with the riva stage II by adding the intakegrate/exhaust/prop/wedge etc from the riva kit? It sounds like the way to go but I am not sure.
Anyhelp would be appreaciated as I am still trying to decide which mods to install this coming winter to get into the low to mid 80's for next summer.
09-19-2006, 08:33 PM #2
the rotax stage 2 kit is a ported cylinder head if u want to go that route, but there's plenty of other substitutes...
i think most would agree the best plan of attack is this... don't get a complete riva stage 2 bc some of the components are useless with the latest 4-tec advancements (ie the Vortech SC Impeller) ... none of the kits are the BEST of all worlds, but a blend of them... here's my recommendations:
Make your own 4" intake
Rotax Thru-hull exhaust
Riva Intake Grate
Rotax Racing ECU
SOLAS prop (pitch depending on what mods you choose)
Race Engineering OPAS Block offs
If you want optimal top speed and reliability, you need to address the stock valvetrain to turn more RPMs in the 8500+ range.
then you have 3 superchargers at this time to choose from:
Rotax Racing High Boost Impeller (appx 9.5 psi)
Riva Stage 3 SC (not yet available to public)
B-kit (expensive!!! but BIG power 13+ psi)
pick ur budget, and pick ur top speed goal
09-19-2006, 08:37 PM #3
just reading that parts list makes my mouth water.
09-19-2006, 10:17 PM #4Originally Posted by RustyXP
09-19-2006, 11:49 PM #5
- Join Date
- Sep 2006
The RR kits have recently been upgraded:
This is the official distributor of RR kits (I've been given this name by ROTAX aftermarket dpt. directly). They are very kind and work closely with Franco Dettori.
Kit A is +40HP
Kit B is +65HP
FULL MOTOR 315HP
Have a look to their web-site and to tothe KIT's pictures.
09-24-2006, 09:43 AM #6
- Join Date
- Sep 2006
- winchester va
want 2 go fast a good mix riva cold air intake mac boost intercooler riva intake grate rotax racing sc impeller 42 lb injecters and steel washers r&e opas block off riva sponsons green hulk solas prop with his 14/20 pitch this is on my winter list if u want the R's rotax racing ecu & pitch the prop for it forget the wedge
09-24-2006, 10:28 AM #7Originally Posted by GIONNIK
In fact Rotax Racing will have a NICE showcase of products on display at the world finals...I believe they will be beside the sea-doo booth...
All of the Rotax Racing products are available in Jerry's online store...
At VERY competitive rates!!
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