10-21-2014, 07:57 AM #1
Video: RIVA Racing Spins Yamaha SVHO to 9,000RPM, Makes 375HP On Pump Gas
Yamaha’s Super Vortex High Output 1,812cc four-cylinder 4-stroke was a power-maker, but to what degree remained somewhat of a trade secret. (We’ve received “unofficial” results that the SVHO in factory trim makes anywhere between 258 and 264 horsepower.)
While impressive, the real question is what is the SVHO capable of. For that, Scheffield has the answer, “Our target RPM with the [RIVA] Stage 2 SVHO kits is 8,300 for the FZ models, and 8,400 for the FX models.” Yet, for this particular test, Scheffield and crew wondered what the SVHO could do on pump gas (91 octane) at 9,000.
The post Video: RIVA Racing Spins Yamaha SVHO to 9,000RPM, Makes 375HP On Pump Gas appeared first on The Watercraft Journal.
More at WatercraftJournal.Com
10-23-2014, 03:36 AM #2
I think it's on stock wheel...
no one knows boost pressure at 9000 rpm?
I'm triing to verify accuracy of this site...
1812cc 9000rpm 14 psi ... hp calculated by this site is 375hp
it could be right !
10-23-2014, 08:09 AM #3
9000 rpm stock svho wheel will make closer to 18.5-19 psi
10-23-2014, 09:53 PM #4
Not even close!!!! Stock wheel at 9k is 16-17 psi motec, I posted all the info before. That is with stock Cams!!!
If you don't change the cams You can put a ET24 and not see over 17 psi with a SVHO!!!!!!!
There is a reason Yamaha went to this restrictive setup!!!
10-24-2014, 07:58 AM #5
Going off this curve seems within reason. I seen 14psi at 8150 on stock cam. Going to see tomorrow 8600+ on sho cam and record results
18 lb @ 8800.
17 @ 8600.
15.35 @ 8300
13.92 @ 8000
10-24-2014, 08:15 AM #6
10-24-2014, 08:18 AM #7
10-24-2014, 08:21 AM #8
10-24-2014, 09:56 PM #9
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By tripc in forum Sea Doo ClassifiedsReplies: 1Last Post: 08-22-2014, 08:34 AM
By Sasha_jimenez in forum Yamaha Open DiscussionReplies: 11Last Post: 06-03-2013, 05:56 PM
By Deansteam in forum Yamaha PWC Performance (4-stroke)Replies: 6Last Post: 01-05-2012, 07:10 PM
By stefanbga in forum Yamaha ClassifiedsReplies: 4Last Post: 09-27-2011, 09:05 PM
By Deansteam in forum Yamaha PWC Performance (4-stroke)Replies: 1Last Post: 09-09-2010, 04:32 PM