Breathe Easier

[Ack-CB11_imp]

I am still puzzled by the view of the interior of the air filter. How does that work?
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It looks to me like the gold piece replaces the OE cover. That opening is the new intake port. Riding in heavy rain might be trouble?

[736cc_imp]

So the stock cover goes onto the gold cover? Or what covers the inside of the filter preventing the air flow from entering the inside of filter?

[Deanohh_imp]

So the stock cover goes onto the gold cover? Or what covers the inside of the filter preventing the air flow from entering the inside of filter?

the inside is the outside. The outside of the filter is the clean side. Air enters the big hole, goes through the filter to engine.

[The Spaceman_imp]

Here are installation instructions. Not exactly bolt-on for the throttle body inlets as the assembly must be removed.
I am still puzzled by the view of the interior of the air filter. How does that work?
http://www.tsrjp.com/web/pdf/17200-S65-000.pdf

It looks like you pull the cover off the filter and have the air filter end completely open, versus sucking air through the "snorkel." Dismantling the throttle bodies doesn't look like much fun...

[AzBob_imp]

Most of the dyno charts I've seen for the stock bike have shown RWHP around 83-84 hp. Factory measurements are usually taken at the crank and you can expect a the loss of a few horses in the drive line.

Given that, low to mid 80s at the rear wheel are about what I would have expected to see with a factory claim of 88 at the crank.

The other thing that I've noticed while looking at the various charts that have been posted on the 'net is that opening up the exhaust and adding a PC shows pretty good gains across the powerband, with about 10 hp total at the top.

That's odd. That would make this bike's transmission and sprocket/chain system the most efficient on Earth (or Honda is lying about net HP). The drive train usually accounts for 10-15% loss from net (which would yield about 74-80hp, which is what the posted dyno results show). Net horsepower is always measured at the crank. The dyno results in this thread are the only I've seen, however, they are inline with what I would have expected. Who knows.

[flynrider]

Depends on the drive. Chain drives are pretty efficient. I'd expect a loss in the 15% range for a shaft drive, though. Too many 90 degree turns.

I haven't dynoed my CB1100, but my CB750 managed to put 63 horses at the rear wheel from a claimed 68 at the crank. Other charts for the same bike were in the same ballpark.

I've got a collection of charts for stock CB1100's that I've collected from various sources on the Internet. Most of them peak in the neighborhood of 83. I don't count the ones where they didn't pull the speedo sensor and hit the limiter.

Found a couple on this laptop small enough to attach :

[silascopathic_imp]

ahhhh! i see these in my future!!!

[Ack-CB11_imp]

ahhhh! i see these in my future!!!

I like them too, sounds like we'll need a map to match the air gains with fuel.

[Ack-CB11_imp]

Yes we do......

TSR has this link to the Power Commander map they used with the intake parts and exhaust.

http://shop.tsrjp.com/item/IS00008N00490.html

I couldn't get the translated page to fly, it's the last blue link on the page and has a PVM in it.
The dyno chart shown and has all 5 parts on the bike for those results. I'd say between the cat and the intake, our poor motor just needs to breeeeth.

[Smiler_imp]

Have ordered the air filter funnel, it will go with the k Tec exhaust and power commander......