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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: sci on January 19, 2021, 03:30:47 PM

Title: K75 port & polish heads
Post by: sci on January 19, 2021, 03:30:47 PM: Out on a ride last year I ran into a guy that said he had a 1993 K75 just like mine. Among other things, he said he did a port & polish on it and it made such a huge difference that the front end would come up off the ground. I have no plan on doing this because I don't need any more horses but I was wondering; was this guy pulling my leg? What do you guys think? Would it make that much difference in horsepower?
-Sci
Title: Re: K75 port & polish heads
Post by: The Mighty Gryphon on January 19, 2021, 04:23:18 PM: There is a video on YouTube showing a K75RT doing wheelies so I suppose it's possible.

https://www.youtube.com/watch?v=gu-WP8xDuKA

Who knows? The guy in the video may be the guy who you were talking to.
Title: Re: K75 port & polish heads
Post by: Martin on January 19, 2021, 04:40:31 PM: It's got a lot to do with technique. I had a mate that could get just about anything up, including a Honda 90 Postie bike. I've accidently got my front to lift a couple of times when I first got it, but from a standing start. There is a school that you can attend. http://wheeliezone.com.au/
Regards Martin.
Title: Re: K75 port & polish heads
Post by: alabrew on January 20, 2021, 12:14:41 PM: I popped a wheelie, once, just once, accidentally, with my young son on the back of the '85 k100RT.
Title: Re: K75 port & polish heads
Post by: schrocketeer on January 21, 2021, 09:54:17 AM: Wheelie discussion aside, has anyone done any exhaust port cleaning / matching exhaust pipes to head type work?
Title: Re: K75 port & polish heads
Post by: The Mighty Gryphon on January 21, 2021, 03:36:26 PM: Quote from: schrocketeer on January 21, 2021, 09:54:17 AM
Wheelie discussion aside, has anyone done any exhaust port cleaning / matching exhaust pipes to head type work?

I'm kinda thinking some of you guys are riding the wrong bike.
Title: Re: K75 port & polish heads
Post by: sci on January 21, 2021, 05:09:11 PM: Thanks schrocketeer,
You took the words right out of my mouth. Very curious if anyone has done this?
-Sci
Title: Re: K75 port & polish heads
Post by: Laitch on January 21, 2021, 05:20:20 PM: Quote from: schrocketeer on January 21, 2021, 09:54:17 AM
. . . has anyone done any exhaust port cleaning / matching exhaust pipes to head type work?
Look here (https://www.bskspeedworks.co.uk/k-gasflowed-head.html). They've been doing it for a while and they aren't keeping it a secret. :laughing4-giggles: