Topic: found old yoshi 4-1!... pics!

[dakeddie]

regarding my first post http://www.sohc4.us/forums/index.php?topic=14328.0, here are some pics of the pipes installed.  the tail piece is definitely yoshi and is stamped "750K", but i'm not positive the headers are.  i couldn't get the tail piece flange to line up with the rear pegs mount, hence the coat hanger wire there for reinforcement.  anyone ever have this problem?  i think my only options are to make a bracket, or to cut some material off the end of the header and the front of the tail piece.

the header fit perfectly into the cylinder head, it does seem like the tail piece is misaligned... what's going on?

[dakeddie]

more pics

[Andoo]

Thats a spiff exhaust  mount. Plan to go into production with theese buggers?

[Roach Carver]

think of all the weight that could be saved by replacing all bolts with twisted coat hanger wire.

[8 Track]

Yes, I had that problem and I made this bracket, instead of shortening the pipe.  Sorry about the quality of the pic.

[Sam Green Racing]

Plastic cable ties  much lighter.

On my small sprint bike, I use them for holding lots of things on  

Sam.

[Chris Liston]

That is awsome.  I just picked up a MAC exhaust for my 550 a short time ago and it looks like MAC may have copied the Yoshi headers.  Great looking setup.

[oldman prof]

Can anybody tell me what a yoshi like that costs now because i don't think theres a better pipe,back in the day they were scarce here but they were the best if you had your carbs tuned right,i probly cant afford them but i might strike it rich one day

[dakeddie]

i found mine for a $100cad, they were unused but they needed a little clean up.  btw, they make your bike sound like an f1 race car... no kidding.  although, i am a little worried about the attention they create specifically with the po' po'.

i will probably make a bracket... easier than cutting the pipes.

[oldman prof]

Thanks but what does "cad" behind $100 mean,sorry I dont want to sound stupid it just may be.I just want to work out what it may cost in SA Rands because I know I will have to import the day I strike it rich

[nteek754]

Hey all  a bit  pricy but  KERKER gets my vote  its a whole lot better than the mac  dont know about the yoshi as far a performance  I run  kerker with just the cone piece no baffle with K &Ns  on a stock engine I kept the stock jets ran great   younger Bro and Sister running that set up Im running 120 because Ive got the 836 kit and this baby rock  good luck seven fifty four ever  Craig in Maine

[sparty]

i found mine for a $100cad, they were unused but they needed a little clean up.  btw, they make your bike sound like an f1 race car... no kidding.  although, i am a little worried about the attention they create specifically with the po' po'.

i will probably make a bracket... easier than cutting the pipes.

I know what you mean about the F1 race car sound.  My pipes roar, especially starting around 6000 RPMs.  My wife told me that she could hear me coming from a good 1/2 mile away and she was in the house!  My neighbor, Jon, has a bike also and he says that sometimes when I crack open the throttle he can hear my bike four stop lights away.  When I am on the bike, it isn't really that loud... maybe my earplugs have something to do with that.  Those Yoshi exhausts are the bomb!

Sparty

[upperlake04]

what does "cad" behind $100 mean

'
'cdn' would mean 'Canadian'   maybe MrEddie has a code in his doze

[dusterdude]

what does "cad" behind $100 mean

'
'cdn' would mean 'Canadian'   maybe MrEddie has a code in his dose

which is if im guessing right,that would be about 75.00 usd

[upperlake04]

 $87.896USD - 657.998ZAR as of this minute

[Loudpipe]

Where did you get the Yoshi pipe from? Are they in production, or am I going to have to search eBay to find one?

[dusterdude]

$87.896USD - 657.998ZAR as of this minute

ok,ok,give or take 12.00

[dakeddie]

yeah... CAD means Canadian Dollers.

this local guy had bought them in the late 70's and never installed them.  he didn't get around to selling them until now.  he left a note on another 750k bike adn that owner gave me the number.

as far as i can tell, you can't buy these pipes new.

[Steve F]

I always hear about the "Yosh" pipes, and have often wondered what was so "special" about them.  What makes the "Yoshimura" pipes different and so coveted.  Are they engineered any different than say a Kerker or MAC?  The material?  What?    

[sparty]

I always hear about the "Yosh" pipes, and have often wondered what was so "special" about them.  What makes the "Yoshimura" pipes different and so coveted.  Are they engineered any different than say a Kerker or MAC?  The material?  What?    

From what I understand, the Yoshi pipes were developed and engineered with high performance in mind.  The header pipes were mandrel bent in a configuration that allowed all of the exhaust gases, from each of the cylinders, to escape freely, but still allow just enough back pressure to aide performance.  The steel used to construct the pipes was able to keep the heat in the pipe, thus allowing the gases to exit more cleanly. Of course, the nearly open (straight through) design of the “muffler” would allow a bike revving at 9K to expel all of its gases thus enabling better performance.  The design of the muffle element also allowed for a greater amount of ground clearance on the racetrack when scraping your knees in the tight turns.

Sparty