Thread: New pistons for 4-Tec Engines
09-23-2009, 03:22 PM #1
New pistons for 4-Tec Engines
These will be made available around mid October. Price is not yet determined.
They have been thoroughly tested on the dyno and the race course. In fact the engine you see here will be dropped into a turbo race ski at World Finals.
They will be available in stock bore and also +2 oversizes in various compression ratios
Riva Seadoo Racing Pistons:
Our forged racing pistons deliver maximum reliability and performance in high boost & turbo applications. High strength piston kits include premium ring package, tool steel wrist pin & carbon steel wire locks.
- CNC machined from high strength/light weight forgings.
- Optimized dome design for efficient combustion.
- Improved lubrication hole placement for reduced friction.
- Premium low friction ring package.
- High strength tool steel wrist pins machined from special tool steel bar stock & heat treated.
- Carbon steel wire locks.
- Direct replacement diameter + 2 oversizes available.
- Several compression ratios will be available (including stock).
09-23-2009, 03:38 PM #2
09-23-2009, 04:19 PM #3
pretty nice looking........u can see the wider and larger diameter skirt for LESS piston to cylinder rocking as well the extra oiler holes look great......any weight savings to these pistons..............
09-23-2009, 05:26 PM #4
I don't know if i could bring myself to put them in an engine they look too good to cover up! Nice skirt design.
09-23-2009, 05:40 PM #5
- Join Date
- Aug 2007
- Sparrows Point, MD (near the Key Bridge)
love the Riva logo on the piston
09-23-2009, 05:43 PM #6
Nice! What is the weight difference compared to stock?
09-23-2009, 05:46 PM #7
Very nice. Looks like they are setup for more oiling maybe, with the small holes around the side?
09-23-2009, 06:50 PM #8
any idea what compression ratios will be available
09-24-2009, 08:10 AM #9
The way I see it there is a problem already with the design.... People will find any excuse posible to remove the spark plugs and send boroscopes down the hole just to be able to see if they can still notice the Riva logo. Nice looking thou.
09-24-2009, 08:30 AM #10
at least we know that when Bruce said he's been busy at work he wasn't lying
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