78 kz400 straight pipe?

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Re: 78 kz400 straight pipe?

01 Jun 2015 16:43
#674846
Nessism wrote: Loud bikes are a disservice to motorcyclists everywhere because they create ill well with the general populous. It's incredibly selfish to run loud pipes and inflict your noise on everyone within earshot. It's hard enough to get respect from cagers as it is, and loud bikes give people a very good reason to disrespect bikers and their rights.
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I totally agree. staright pipes loud bikes = noise pollution of the worst kind
1980 kz750E1, Delkevic exhaust

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  • Drafter89
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Re: 78 kz400 straight pipe?

01 Jun 2015 17:51
#674852
Yeah that ain't bad. I like it. Here's mine now.oh nvmd its not letting me upload video :(
apbling wrote: I just added the dunstall ones to my 750 4 cylinder - made it a little louder, but changed it more to a deeper growl, but sensible and not embarrassing - like when ppl are looking at you because you look and sound like a goofball rather than them looking at you thinking "wow that bike sounds cool!".

I wouldn't think a 400 would ever be super super loud. I have straight pipes w/ no baffle on my honda 1100 twin, and yes its loud, but there are harleys that are louder than me (they should be with 300-400 more cc's). But I'd recommend some sort of muffler because it'll make jetting easier and be better for your bike overall. On the plus side... in my opinion, these small displacement bikes just don't sound good with pipes, hence why I still and always will have my stock exhaust on my 550. But those slip ones did add a nice growl. Heres two vids of my 750 with them on. You'll have to watch a different video to hear the stock sound. I just cut my old rusted cans off, slaped these on with the help of a reducer from autozone and all I did was richen up the pilot a touch. No jetting and no real performance differences.



78 KZ 400 C1-Daily Driver
New Albany,IN

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  • SWest
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Re: 78 kz400 straight pipe?

01 Jun 2015 18:39 - 01 Jun 2015 18:42
#674869
I agree, there is a fine line between being LOUD and making ponies. At a gas station, two guys were filling up their SUV's. They were looking at the bike while I was filling up. I hit the starter and she growled. I pulled away from the pumps, shut her down to light a cigarette. One guy looked at the other and said,"that's hot", The other one said, "you're telling me."Even people that don't know bikes, know power when they hear it.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
Last edit: 01 Jun 2015 18:42 by SWest. Reason: spelling
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Re: 78 kz400 straight pipe?

02 Jun 2015 09:02
#674975
It can be loud, straight pipes on the kz440 sound mean as hell, but trust me they will trash your exhaust valves. The lack of back pressure and cold air back up the exhaust is not great.

Here are a few videos of my kz440, MAC 2-2 with baffles, and without baffles. Then the stock exhaust with some slip on muffs.





Whip it like a mule!

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Re: 78 kz400 straight pipe?

02 Jun 2015 09:07
#674976
missionkz wrote:
justwannaridekz250 wrote: ..... It has a great sound to it and a lot of harley guys are jealous because my little thumper is louder than their v-twin's...
Ha ha ... I doubt it! LOL

I have had guys on Victory's and Harley's comment on my 440s sound. They couldn't believe it was such a small bike. I currently have the stock exhaust cut and slip on mufflers. It isn't stupid loud, but it is louder than stock, and a lot lower.
Whip it like a mule!
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Re: 78 kz400 straight pipe?

02 Jun 2015 11:12
#674988
holy $hit thats quite the wobble you have there on the offramp dom!

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Re: 78 kz400 straight pipe?

02 Jun 2015 12:13 - 02 Jun 2015 12:30
#674992
Yeah.... I was going to suggest it's time for a suspension tune up and probably head bearings....

added:

My KZ400 and KZ1000 had a head shake and I replaced the steering stem bearings in both.
That totally fixed the KZ1000 but didn't quite do it on the KZ400.
KZ400:
I did all this over and within a couple-three days of "used bike" ownership.
Before buying it. I was checking the rear wheel, chain and sprocket at the guy's house I also noticed the rear wheel bearings were shot... and I mean I could jiggle the rear wheel almost 1/8" at the outside tread diameter! I paid $275 for it!!
After putting only 80miles on, that changed to about 5/32"..... YEOW!
Replacing the triple tree bearing, the rear wheel bearings, the drive chain and both sprockets.... made a world of difference and the bike felt crazy TONS better and turned it into a GREAT little street bike!!
Sold it a month or two later and bought a 1 year old KX250 dirt bike... lol...
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
Last edit: 02 Jun 2015 12:30 by missionkz.

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Re: Re:78 kz400 straight pipe?

02 Jun 2015 19:04 - 02 Jun 2015 19:05
#675046
apbling wrote: holy $hit thats quite the wobble you have there on the offramp dom!
Lol yeah...30yr old tires will do that. That was when I first got the 440. I have since replaced the tires, chain and sprockets and rebuilt the forks. There isn't any wobble at all anymore.
Whip it like a mule!
Last edit: 02 Jun 2015 19:05 by dom2570.

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Re: 78 kz400 straight pipe?

03 Jun 2015 05:18
#675075
Anything I can do to where it doesn't screw up the valves? Or would I have to do some engine component upgrading or something? ( which I'm trying to stay away from at the moment) here's a pic of the exhaust now...just so you can get an idea of what I'm working with. Sounds really good but looks like shit.
dom2570 wrote: but trust me they will trash your exhaust valves. The lack of back pressure and cold air back up the exhaust is not great.
78 KZ 400 C1-Daily Driver
New Albany,IN

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Re: 78 kz400 straight pipe?

03 Jun 2015 05:19
#675076
Anything I can do to where it doesn't screw up the valves? Or would I have to do some engine component upgrading or something? ( which I'm trying to stay away from at the moment) here's a pic of the exhaust now...just so you can get an idea of what I'm working with. Sounds really good but looks like shit.
dom2570 wrote: but trust me they will trash your exhaust valves. The lack of back pressure and cold air back up the exhaust is not great.
78 KZ 400 C1-Daily Driver
New Albany,IN

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Re: 78 kz400 straight pipe?

03 Jun 2015 05:19 - 03 Jun 2015 05:22
#675077
Anything I can do to where it doesn't screw up the valves? Or would I have to do some engine component upgrading or something? ( which I'm trying to stay away from at the moment) here's a pic of the exhaust now...just so you can get an idea of what I'm working with. Sounds really good but looks like shit.


but trust me they will trash your exhaust valves. The lack of back pressure and cold air back up the exhaust is not great.
78 KZ 400 C1-Daily Driver
New Albany,IN

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Last edit: 03 Jun 2015 05:22 by Drafter89.

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Re: 78 kz400 straight pipe?

03 Jun 2015 05:37 - 03 Jun 2015 05:38
#675081
Those short pipes sound sick though!!
dom2570 wrote:
78 KZ 400 C1-Daily Driver
New Albany,IN
Last edit: 03 Jun 2015 05:38 by Drafter89.

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