Topic: newbies cb550 streetfighterish build

[Hasenkopf]

just run a long straight pipe, no muffler ! 

[nickandkristy02]

just run a long straight pipe, no muffler ! 

im am 

[Roach]

what kind of tips will you be running on that exhaust?

[nickandkristy02]

roach im not real sure. the tips will be coming thru the hump part of the seat, anyone have any suggestions?

[brandEn]

roach im not real sure. the tips will be coming thru the hump part of the seat, anyone have any suggestions?

something like the MV Agusta F4 would look sweet

[Retro Rocket]

mick there will be a complete exhaust for this bike

I'm just a little worried about the short length of the headers, the length is critical for the engine to perform properly..

Longer primaries are better for high end power and shorter are for torque {someone correct me if i have these backwards} but the long and short headers aren't that extreme.....worth looking into.... Not knocking it, just trying to be informative, there's a fair bit of science in making pipes....

Mick

[Syscrush]

Longer primaries are better for high end power and shorter are for torque {someone correct me if i have these backwards}

I'm almost certain you have that backwards.

[nickandkristy02]

Longer primaries are better for high end power and shorter are for torque {someone correct me if i have these backwards}

I'm almost certain you have that backwards.

hhmmmmm

[Syscrush]

From a site about header design:

P=(850xED/RPM) - 3

Here's the explanation: P= primary tube length
ED= 180 + the number of degrees the exhaust valve opens before bottom dead center
RPM = the rpm you want to tune for.

So to tune for a lower RPM, you want a longer primary.

[nickandkristy02]

this bike will have plenty of bottom end because it has a 14 tooth front sprocket and 39 rear

[Syscrush]

just run a long straight pipe, no muffler ! 

im am 

Oh god, don't.

Take it from someone who's had some obnoxiously loud machines - it's fun at first but in short order it starts to just suck.  Idling through a parking garage setting off people's car alarms makes you pretty self-conscious.  You always run the risk of getting pulled over for a fix-it-ticket, and you start avoiding going WFO because it attracts so much attention.

A bike with some decent baffling/silencing is just a lot easier to live with and more fun to ride than something with open pipes.

Of course, now and then I do still miss the sound of my old ported N/A RX-7 w/ 3" exhaust at WFO under an overpass. 

[nickandkristy02]

just run a long straight pipe, no muffler ! 

im am 

Oh god, don't.

Take it from someone who's had some obnoxiously loud machines - it's fun at first but in short order it starts to just suck.  Idling through a parking garage setting off people's car alarms makes you pretty self-conscious.  You always run the risk of getting pulled over for a fix-it-ticket, and you start avoiding going WFO because it attracts so much attention.

A bike with some decent baffling/silencing is just a lot easier to live with and more fun to ride than something with open pipes.

Of course, now and then I do still miss the sound of my old ported N/A RX-7 w/ 3" exhaust at WFO under an overpass. 

lucky for me there is no noise restriction for bikes in tennessee....but it is going to need baffling of some kind

[Retro Rocket]

From a site about header design:

P=(850xED/RPM) - 3

Here's the explanation: P= primary tube length
ED= 180 + the number of degrees the exhaust valve opens before bottom dead center
RPM = the rpm you want to tune for.

So to tune for a lower RPM, you want a longer primary.

Yeah, thanks for the correction, i was looking at a bike with extremely long primary pipes and wasn't too sure. {too lazy to google }
If thats the case wouldn't really short headers give nothing down low.? I know a couple of guys found that the shorter headers backfired and popped a lot..?

Mick

[nickandkristy02]

like i said im not really worried about down low due to the bikes gearing

[nickandkristy02]

yippie parts finally came in the mail!!!!

520 14 tooth front sprocket with gold 520 chain,let me say the difference in weight in the sprockets is amazing



i used these guys in the past for engine bolt kit,cheap ,pretty ,and fast shipping.complete 550 kit for $30  alloyboltz.com

[Syscrush]

Very nice.  I think that the 520 should look awesome on the 550 - I'm planning to do the same.

That bolt kit looks nice also.  Should dress up the engine very nicely. 

[Raef]

If look up masonryman cafe project some good pics of some under seat exhuast

[nickandkristy02]

thanks raef

[luap]

looks good man. mono shock looks cool. Im building a 550 with a mono shock an my first attempt looks like yours also an Mine didnt hold the load either, but all you need to do is bring support futher back to the axle bolt an mount the shock to the support rather then the swingarm itself,

[luap]

http://s924.photobucket.com/albums/ad84/luap_dr/78cb550/?action=view&current=IMG_1066.jpg theres a pic of  the mono shock set up i went with this time, was my first time making it so next will be better but least shows you an holds the load, im using a 06 r6 shock

[Stev-o]

Is the bolt kit stainless? You may want to use a dab of anti-sieze when you install.

[FunJimmy]

Subscribed!

[nickandkristy02]

Is the bolt kit stainless? You may want to use a dab of anti-sieze when you install.

  will do

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=310157230514&viewitem=&sspagename=STRK%3AMEWNX%3AIT

[nickandkristy02]

Subscribed!

thats what i like to hear!!

[Stev-o]

Is the bolt kit stainless? You may want to use a dab of anti-sieze when you install.

  will do

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=310157230514&viewitem=&sspagename=STRK%3AMEWNX%3AIT

Thanks for the link, I have been thinking about getting one.