MOTOBRICK.COM

MOTOBRICK.COM => Welcome To Motobrick.Com => Topic started by: kmart67 on August 07, 2016, 10:27:25 AM

Title: switching sides of exhaust on 86' k100
Post by: kmart67 on August 07, 2016, 10:27:25 AM

Hey all, just wondering if the tune will be thrown out of whack by changing the side of the exhaust? ie different pipe bends and what-not.
Want to showcase the open wheel!!

Title: Re: switching sides of exhaust on 86' k100
Post by: Chaos on August 07, 2016, 10:44:03 AM

If the bends are after the collector where the individual pipes come together it should be fine, love to see a pic when you get it done

Title: Re: switching sides of exhaust on 86' k100
Post by: kmart67 on August 07, 2016, 11:32:56 AM

That's just it...it might have to be before the collector to make it around the centre stand and for over all (tight) fit.
If anything though it might increase the back pressure?? Maybe ain't nothin' to it , but to do it! I've seen the tailpipe chopped online, which would be easy, but super loud. Not feasible. And thanks for the reply. will send a pic for sure!

Title: Re: switching sides of exhaust on 86' k100
Post by: Chaos on August 07, 2016, 11:48:10 AM

I think the important thing is to keep the header the same length, but it might not be that big an issue.  here's another idea...

Title: Re: switching sides of exhaust on 86' k100
Post by: Laitch on August 07, 2016, 10:46:27 PM

Quote from: kmart67 on August 07, 2016, 10:27:25 AM

Hey all, just wondering if the tune will be thrown out of whack by changing the side of the exhaust?

This guy (http://www.bikeexif.com/bmw-k100-cafe-racer) didn't seem to care. The exhaust flames act as foot warmers during cold weather rides.

Title: Re: switching sides of exhaust on 86' k100
Post by: TrueAce on August 10, 2016, 11:50:29 PM

You will decrease back pressure because you are eliminating the large choking muffler. The engine will be OK, but it will be a loud bike.

Title: Re: switching sides of exhaust on 86' k100
Post by: kmart67 on August 15, 2016, 07:05:48 PM

Thanks so much everyone, looks like I have some research to do before mods are applied.   :2thumbup:

Title: Re: switching sides of exhaust on 86' k100
Post by: rbm on August 15, 2016, 08:01:33 PM

Larry from SpecialKs did a 4 - 2 conversion on his "Beast" (a K1200 powered K1100).  Go to the web site (http://specialks.net/models/k1200-beast/) and examine the pictures for The Beast to understand how he accomplished this.

Title: Re: switching sides of exhaust on 86' k100
Post by: The Dude on August 15, 2016, 09:13:41 PM

Quote from: TrueAce on August 10, 2016, 11:50:29 PM

You will decrease back pressure because you are eliminating the large choking muffler. The engine will be OK, but it will be a loud bike.

I ran a straight through exhaust for a couple of months.Absolute howler.Not good,long term for exhaust valves.Ah,who cares?
The practice of parting the traffic for "the noise" was empowering.

Title: Re: switching sides of exhaust on 86' k100
Post by: duckytran on September 14, 2016, 05:45:12 PM

Here's a pic of a right side exhaust that cafe4racer.eu sell. They have other pics that will give you an idea on how they did it.

Title: Re: switching sides of exhaust on 86' k100
Post by: The Dude on September 14, 2016, 10:31:26 PM

Very nice! No rain in Texas?
Three of them,too much?Remember the Huricane.
Yee ha.

Title: Re: switching sides of exhaust on 86' k100
Post by: Laitch on September 14, 2016, 10:40:01 PM

Quote from: The Dude on September 14, 2016, 10:31:26 PM

No rain in Texas?

Drainage holes bored into the lower ends of the pipes are factory options.

Title: Re: switching sides of exhaust on 86' k100
Post by: sj2000 on September 29, 2016, 06:37:16 PM

This is what USER PIOTRK100 DID:

http://www.motobrick.com/index.php/topic,7487.msg52151.html#msg52151