91' CB 750 Nighthawk

[Honzilla]

Hey guys,

I was wondering, does anyone know if the exhaust baffles can be removed from my bike with OEM exhaust???
Also if I remove these and get rid of the big bulky air box and get four individual air filters, K&N cones for instance, will I have to get a bigger jet kit for my carbs???

Thanks...

I know it is somewhat crazy to want to tamper with a perfectly sounding OEM bike, but I live in the land of the CRAZY driver.  This way, at least they can't say they didn't HEAR me before they ran me over...  ;)

[Honzilla]

any input on this one?  please...

[Honzilla]

bump for a response...

[TOOLS1]

I can not believe someone has not answered your post by now. I do not have any experience with the DOHC CB 750's, but here is a diagram of your muffler. I do not see where the baffles are removable.  

TOOLS

[sgtslag]

No idea on your actual request, but louder pipes are not the answer.  Loud pipes risk our rights, and they generally piss off everyone within earshot...  Loud pipes will not get you as noticed as you will want.  They will, in all likelyhood, get you a fix-it ticket.  Then you get the joy, and expense, of installing a new exhaust system to replace the one you just modified.  Loud pipes are not directional enough to let other drivers know exactly where you are -- they tend to blast in several directions, bouncing off all building surfaces, vehicles, etc., and if they are loud enough, drivers will be rubber-necking looking to find the source, which means they won't be watching where they are going.

Now, some possible solutions to your problems.  Have you considered a headlight modulator?  They go a long way in making your bike visible, and noticed by other drivers.  I've used them on two of my rides for 3+ years, and I really get noticed.

I also wear a construction-worker type vest.  Yeah, I know, I look funny, but I get noticed!  I also get a lot of compliments from law enforcement officers at gas stations.  They tell me that my day-glow vest is really a good idea, and that they are happy to see me wearing it.

Brake light modulators are also a very good idea.  Here is the lowest priced source I've found yet, for both modulators:

http://www.jcwhitney.com/headlight-daytime-modulator/p2010075.jcwx?filterid=d8782y1979j1

http://www.jcwhitney.com/stop-alert-brake-light-pulsator/p2010076.jcwx?filterid=d8782y1979j1

For the day-glow vest, I would recommend Mills Fleet Farm, or Menards, or some similar store which sells vests to construction workers.  I bought a $3 cheapie, initially, which worked, but it was very cheap.  I later sprang for a really nice, $18 model -- which I heartily recommend for its weight, features, and durability.

It is possible to improve your conspicuity, and personal safety, without breaking the law, or pissing off everyone around you, including pedestrians.  Cheers!

[Honzilla]

I was wondering about the head-light modulator...

When you are riding at night, does it give a strobe-like effect?  (I know not as fast, but is the flashing noticeable?)

[Honzilla]

I was wondering about the head-light modulator...

When you are riding at night, does it give a strobe-like effect?  (I know not as fast, but is the flashing noticeable?)

[TOOLS1]

I have not had any experience with your year, and model, but maybe Luke, or one of the other guys here will know.
TOOLS

[LukeM]

I have seen a few bikes with the headlight mod done.  During the day it flashes randomly, but at night it's on steadily.  I'm not sure how it's done: maybe it's like the daytime running lights, or maybe just a simple switch that turns the effect on or off.

Some stores have a similar arrangement for the tail light: activate the tail light, and it flashes in a random pattern.  It definitely gets your attention.

Luke M

[sgtslag]

Sorry, out of town for weekend.

Headlight mod's do not flash, rather they vary the brightness quickly -- slightly different than emergency vehicles that do flash.  By law, they are required to have a photoswitch to turn the headlight on normal mode at dusk.  Legal in 50 States, and Canada.

Anecdotally, I swear by them for helping to avoid cars pulling out in front of me, but no known studies have been done.  They are one tool for improving our conspicuity in traffic.  We also ride with flourescent green vests, what road workers wear:  really helps in rain and fog, and the very occasional night ride.  Received numerous compliments at gas stations, from current, and retired, law enforcement officers.  These vests are becoming more common on the roads in my area as well.

Different modulator models are available.  Some plug into the back of the headlight (most expensive models), others require cutting into the wiring (less expensive).  My oldest is 5 years, still works perfectly (JC Whitney's Amperex model -- required a bypass toggle swith, no photoswitch).  Bought a higher model, with auto-magic photoswitch, directly from Amperex ($60 delivered), put it on my Voyager.  Works great, but the photoswitch needed some shades as it stayed on at dusk, when I thought it should be off.  Cut a $3 sunglass lens with a cut-off wheel on my mototool, secured with RTV Silicone -- works great.  Probably more than you wanted to know...  Cheers!

[Cabreco]

Headlight modulator is a good tool, also the reflective vest. These are required on military bases. The cheapest I've seen is Harbor Freight $5. ( I have 3 or 4 of them)
http://www.harborfreight.com/reflective-safety-vest-x-large-94700.html

Also use a light color helmet or use reflective material on it. I also have green LED photo & motion sensitive valve stems for night driving. The more that doesn't blend in the better.

As far as pulling your baffles to make it louder to be more obvious, that really won't work.
Most people have their windows up,  A/C on, & are on their cell so the only thing you will do is annoy the police & drive yourself deaf. It may also mess up your setup.

Wise ol' sayin' "If it ain't broke don't fix it!"