A crazy idea

[mrb]

The 998cc Spyder engine has around 100hp, the RSV Millie with the same engine has around 146hp, if it is the exact same engine, how will the Spyder react with it? I wonder if they will interchange? it is very tempting to try find out

Back in 2009 Evoluzione , who are now out of business, had been reworking the Aprilla for higher performance and did offer a number of "upgrades" for the V twin Spyder, since the motors are essentially the same. They were the first people to offer a stiffer sway bar and an O2 sensor for the Can Am Unfortunately as I said they went out of business

 

[mrb]

The 998cc Spyder engine has around 100hp, the RSV Millie with the same engine has around 146hp, if it is the exact same engine, how will the Spyder react with it? I wonder if they will interchange? it is very tempting to try find out

Back in 2009 Evoluzione , who are now out of business, had been reworking the Aprilla for higher performance and did offer a number of "upgrades" for the V twin Spyder, since the motors are essentially the same. They were the first people to offer a stiffer sway bar and an O2 sensor for the Can Am Unfortunately as I said they went out of business

 

[retread]

The earlier Aprilia Tuono and RSV used the Rotax 998, in a higher state of tuning than the Spyder's version. The gearing is identical, except that the Spyder trans has the sixth gear replaced by reverse.
In Europe, I've heard of lots of hot rod stuff for the 998, big bore kits, a 1200 cc stroker kit, and so forth. The one thing hat would concern me with a project like this would be the clutch, our Spyders are lots heavier than the Aprilias are, and can't absorb hard starts by lofting the front wheels.
It's been a few years since I played with ideas like this, but I was always curious about what a 1340 cc twin would be capable of in a Spyder.

john

 

[Bob Denman]

It's been a few years since I played with ideas like this, but I was always curious about what a 1340 cc twin would be capable of in a Spyder.

I think that it would certainly be capable of draining a couple of bank accounts... :shocked: nojoke

 

[retread]

Yeah, Bob, the stroker kit 5 years ago was over 5K, to get really serious with these engines takes cubic money!

john

 

[Bob Denman]

I fought that battle back in the early nineties, with two-stroke snowmobile engines. :banghead:
I turned a 1992 Polaris XCR 440, into a 520...
The bore, stroke, and porting jobs cost about $4000
Then, I had to bore out the Mikuni VMs...
Add new pipes to the machine.
get custom ramps for the primary clutch
re-gear the thing...
And then; spend an entire season with clutching and jetting changes...

WHEW! :shocked:

(But I DID run it for 15 years, and it was TONS of fun! :thumbup