Blown r65?

[Bing]

Hi Guys,

While I am in the middle of the stripdown/rebuild of my 84' r65 I have been having all sorts of thoughts about what to do with "next bike"

The sick twisted thought that keeps coming back is to get another twinshock r65 and strip it down to a frame, seat, two wheels, engine and supercharger! Sort of like a modern version of the 30's racers.

I know the standard warning is "if you want to go faster get a bigger bike"  but I think this is going to be my next project anyway.

What is the assembled wisdom of the group. Am I going to go through main bearings like mad? Is 10lbs boost too much? How about a full 14?

[Vegasrandall]

I used to work in a shop that hopped up volvo's. They were fun but they only impressed other volvos.
Might as well do it to a RT.

[Rob Valdez 79 R65]

Anything can be done.  

Are you thinking supercharger or turbocharger?  I don't think I've ever seen a supercharger kit for a BMW.  There were turbocharger kits available in the '80s for airheads.  

All I know about the subject is what I remember reading in the late '70s and '80s in the magazines, which was a long time ago.

I think to be really successful, you need water injection to cool the pistons?

I think people that love to work on their bike love them.  Make sure you have a buddy with a pick-up truck.

Oh yeah, your will also need to put a second spark plug in each head.  I don't know if R65s are more difficult to do than the Type 247's or not.  There may be less material to work with.

Good luck.

[Lucky_Lou]

Saw some pictures somewhere of a R65 cafe racer with a turbo, the starter motor and cover had been removed and the blower was located there  under the tank if i find it ill post it.
Lou

[Bing]

Thanks guys, I am planing to use the super charger off the 4agze. I think it will fit where the top of the later style airbox goes, if it does I'll run a shaft to the front of the engine, use the electric pulley clutch and a single cd carb over the battery.

It should give me the option to cruise naturally aseparated or flick a switch on the handlebar for a preset amount of boost.

It's a nice thought experiment at the moment. I have my standard r65 to rebuild first. Once I have one bike on the road I can start to collect parts for the fun bike.

[Semper Gumby]

These guys have race parts you might need.  http://www.motoren-israel.com/index.php?XTCsid=1ec85da7be9f9910e1a19bc65800a3cb

The guys in England that used to build large displacement R65s are owners of a broken link so I don't know whats going on there...

[Rob Valdez 79 R65]

owners of a broken link

You are clever, Bill!  

http://www.lyricsfreak.com/y/yes/owner+of+a+lonely+heart_20148317.html

[Semper Gumby]

owners of a broken link

You are clever, Bill!  

http://www.lyricsfreak.com/y/yes/owner+of+a+lonely+heart_20148317.html

Last Yes album I bought.  Channeling I guess.   Good stuff even today (as well as Yesterday.)  8-)

[nhmaf]

I've seen some R65 and R80 bikes with the Luftmeister turbo kits from the 1980s, but haven't seen a supercharged one - sounds like a challenging project!

[Rob Valdez 79 R65]

I'm just assuming, but I think, coming from Australia, supercharging doesn't mean the same thing there as it does here in the States.

FYI Bing - here in the U.S. a supercharger works by mechanical methods, usually with a belt & pulleys to drive the compressor (think Mad Max)

While a turbocharger (again, in U.S.-speak) works by forcing exhaust gasses through a turbine to get the compressor turning.

The later has what is referred to as "turbo-lag", because it takes a second or two for the compressor to start doing "the nasty".