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Very Cool....
LRRS EX 66
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factoryeffex
Heh, I still want to know what 'engine preparation' Seacoast did 'cause that bike was pulling a LOT harder than a 696 should AFAIK. : )
yup, i thought i spotted 2 sets of plugs on the front cylinder as he was going up 4.....Originally Posted by Kurlon
Q
"Ami blaireau, comme t'es nul au cronos..."
"If your mom's got a schlong, run away, she's not your mom...."
According to Nichols Manufacturing's website, the dual plug head mod is good for 10hp on an otherwise stock motor.yup, i thought i spotted 2 sets of plugs on the front cylinder as he was going up 4.....
Q
CCS/LRRS/NEMM AM #205 (Inactive)
I'm going to have to go up to SSC and chat those guys up about a 696. I'm really curious what they / Kates did to the front end.
Last edited by DesmoTull; 09-16-10 at 08:55 AM.
The front end has a Ohlins 25mm kit installed. It may have been custom modified to work with the stock forks.
The bike was working pretty decent on Friday when I rode it. Jeff continued to make changes to dial it in for his races on Saturday.
I have had a blast riding the stock instructor bike for my class @ Penguin Schools.
Scott
I really, really, like this bike. I'm seriously thinking about selling the Harley and picking one up. It seems like the perfect bike for Loudon if you don't want an SV.
Rob, go for it.
I just got a 800ss that will be built over the winter.
CCS/LRRS/NEMM AM #205 (Inactive)
It seemed rather nimble through T9 for ya....boss.
LRRS\CCS\WERA #486
Who killed my friend rob and wrote this from his computer?
you know anyone that wants to buy a Harley?
Those heads fit on the new Monsters!?
I have to email them and figure a few things out. I don't know if those heads fit or not, but the power claim was for the mod itself. If it is cost effective, I will get some dual plug heads for my bike.
Edit: just sent them a message.
Last edited by eboos; 09-16-10 at 10:22 AM.
CCS/LRRS/NEMM AM #205 (Inactive)
I was under the impresson that those were only for the 900 motors. It would be awesome if it could be used for others with similar gains, but I'm skeptical.
Here you go DesmoTull,
http://nicholsmfg.com/motorcycle/ind...mart&Itemid=53
CCS/LRRS/NEMM AM #205 (Inactive)
You can just get production dual spark heads from Duc... : )
Seen that, thanks. But the description is confusing, thought that was only for 900cc engines. ~12% gain though isn't to shabby at all.
Pretty sure the factory dual spark heads won't fit on a 620/695/800. It's a totally different case. QFactor looked into swapping a 1000 top end onto his S2R800, and it wouldn't work because the barrel & head design are totally different. Head stud holes won't line up, and things like that.
Seacoast just told me that the ports would need to be completely reshaped to make the heads dual plug. It isn't as simple as adding another plug. I haven't gotten a response from Nichols yet.
CCS/LRRS/NEMM AM #205 (Inactive)
with all the chatter about cost of racing looks like a 696 would be an easy swap from street to race = dual purpose bike. safety wire, no race plastic, put your money in suspension, numbers on tank and quick connect lights/ front number plate.
edit: and swap rubber back and forth 7 times a year at track..
Last edited by CMG241; 09-16-10 at 01:12 PM.
It still has 696 heads on it, no dual plugs and such
When has a minor detail such as that prevented me from doing something stupid?
The old 900SS motor responded well to dual plugging for a couple reasons...
1st the bore was pretty big, and the stock plug wasn't in the center, having a plug with a matching offset on the other side gives a more complete burn.
2nd the combustion chamber is friggin HUGE!!! To get the compression numbers up, pistons use a dome patterend after Kilimanjaro, if time hadn't worn it down. That slows down the flame front as it has to climb that sucker to reach the other side, so starting a second flame front via a second plug speeds the process up.
I've not had a chance to see a current generation head in my hands, so I dunno how much Ducati has evolved the design from the old 900SS but based on the numbers they're posting I'd wager they sport a lower volume, flatter chamber with larger valves and a better plug position. They saw big gains when they went to factory Dual Sparks, the DS heads didn't increase the costs of the motors that much so to justify the effort in going back to a single plug I'd bet they put some time into the castings to prevent going backwards on performance.
Considering some of the mini heads I've seen dual-plugged, I very much doubt it can't be done on the new Duc heads. : ) And the bores are big enough, I bet you still see a gain even if it's not 10%+.
As far as the motors being all new cases/etc, Duc has a wonderfull habit of re-using common stud spacings over and over and over again. I'd be willing to bet there is a production Duc head available that'll slip over those studs and provide a gain, even if it's not one from a DS motor. (749 head on a Duc 450 single, stud spacing matches!) Cranks swap around pretty easily across the years too. There are some really neat combos that are near bolt together just waiting to be tried, including a few I've simulated... if I ever get the cash and time I've got one hell of an ULSB legal 800 build planned out.
Yeah, but what about whats under those heads? : )
Pistons
When has a minor detail such as that prevented me from doing something stupid?
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