Straight pipes - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 9 (permalink) Old 09-18-2013, 02:50 PM Thread Starter
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Straight pipes

I have a local shop around here doing some work on my bike currently. As a gift idea my dad thought it would be a good idea to have them install straight pipes. He coughed up the price just earlier and install and everything guy wants to charge 300+. Am I thinking that price is ridiculously IGNORANT? I did a quick search as I'm currently on lunch break but didn't find any answers for straight pipes. I was originally gonna makeshift my own on my spare time but is it worth 300 bucks??
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post #2 of 9 (permalink) Old 09-18-2013, 03:01 PM
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Straight Pipes

Does that price include re-jetting the carburetors? If you put straight pipes on it the carburetors will have to be re-jetted. To get this engine to run well you need some back pressure, I would look at some aftermarket pipes such as Vance and Hines or there are other brands made. Even with those you will need to re-jet the carburetors.

Enjoy the Ride

New to me 2004 15k Last liscened in 2011. Stock as they come.
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post #3 of 9 (permalink) Old 09-18-2013, 03:06 PM
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Straight pipes .....why?

So you can be loud and annoy the world around you???

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post #4 of 9 (permalink) Old 09-18-2013, 03:20 PM
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straight pipes on smaller CC bikes sound like farting ducks, but if that's what you like....

Merc
2000 Vulcan Drifter 800
Roadhouse classic 2 > 1 exhaust
Okie Smokie intake config
Changed jets
52K miles or so, always going up
Corbin Seat
Painted flat black winter '12
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post #5 of 9 (permalink) Old 09-18-2013, 03:22 PM
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Quote:
Originally Posted by Mcneuby View Post
Does that price include re-jetting the carburetors? If you put straight pipes on it the carburetors will have to be re-jetted. To get this engine to run well you need some back pressure, I would look at some aftermarket pipes such as Vance and Hines or there are other brands made. Even with those you will need to re-jet the carburetors.

Enjoy the Ride
X2.

+you will subtract from the bottom and mid range to gain typically 10% at the top rpm's.
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post #6 of 9 (permalink) Old 09-18-2013, 07:04 PM Thread Starter
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Regarding the jet kit; No, might cut me some slack cause he is doing the jets and just a complete tune up for the most part save plugs/wires. I've done oil plugs (fixed a wire with some shrink tape) bought tires and let him do the brakes. I know I could do the disc's but for some reason my brain can't figure out Drums. He had to mount the tires anyway so eh better all at once. First bike and have enjoyed the heck out of it thus far!

Sadly I don't have a dollar amount just yet I just know Friday will kill me =/

Edit, Sound - I debaffled/goated my 750 and it didn't sound all that bad even with the awful backfiring... Wouldn't straight pipes with certain baffles work almost as well?

Double Edit: THANKS very much for all the feedback so quickly

Last edited by Mr Lithor; 09-18-2013 at 07:07 PM.
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post #7 of 9 (permalink) Old 09-18-2013, 09:05 PM
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If yer anywhere around Benton County, dont run full straight pipes....my brother in law is the sherriff there and they will nail ya....
If you wanna run straight pipes, its ok, but you need to run em long. Like to the back of the rear tire to get enough backpressure....with 4" drag pipe baffles added, you still need to go to the axle....and yeah, it WILL sound like the AFLAC duck being dragged by a semi....
Get a pair of debaffled Sportster mufflers ($30-40)...wil give ya a rumbly sound, but will still be louder than stock debaffled....you need "expansion" room for gasses, to get a lower tone.....even if hollow....the larger the chamber, the lower the tone....decibels are proportionate with restriction, whereas tone is proportionate with volume of expansion....

Quote:
sound like farting ducks
Easier to shoot em that way.....




Last edited by Wolfie; 09-18-2013 at 09:08 PM.
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post #8 of 9 (permalink) Old 09-18-2013, 09:11 PM
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straight pipes with baffles aren't really straight pipes any more haha. Loud pops on deaccel is because of a too lean condition, I have experience with this first hand on my 800. Stright pipes on my 800 moved my power from higher RPM to lower RPM, and it was a huge REDUCTION in power.

If you are doing straight pipes for power - it is not better, if you are doing true straight pipes (no baffles) for sound quality - it is not better, if you are doing straight pipes for loud and annoying, go for it.

For $300 - that is a lot. You can buy aftermarket exhausts that perform WELL and sound GOOD for $500 and just do the carb tuning yourself.

best of luck.

kenny

Merc
2000 Vulcan Drifter 800
Roadhouse classic 2 > 1 exhaust
Okie Smokie intake config
Changed jets
52K miles or so, always going up
Corbin Seat
Painted flat black winter '12
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post #9 of 9 (permalink) Old 09-18-2013, 09:14 PM
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by the way.... on a vn 800

baffles in
http://www.youtube.com/watch?v=65bllxLQQlQ

baffle out
http://www.youtube.com/watch?v=gIBA_JEQ8Ns

man i was fat then.

kenny

Merc
2000 Vulcan Drifter 800
Roadhouse classic 2 > 1 exhaust
Okie Smokie intake config
Changed jets
52K miles or so, always going up
Corbin Seat
Painted flat black winter '12
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