78 GS750 Yoshimura Resto-mod

[SpecialK]

Very nice looking! I envy that Yoshimura exhaust so badly!
Did you notice on the exhaust hanger if it has GS 750 stamped into it? Or GS 100? It hangs a little low below the oil pan, and I was wondering if it was a GS1000 exhaust like the one that I have. Yours is upswept substantially more though, mine exits slightly higher than stock and more straight back. I opted to save it for a GS1000 engine in the Rickman CR race chassis build that I have stored away for the future after several other projects get done.

Was that cylinder head ported? Have you measured the intake ports with the carburetor boots off of the head? If you put bigger carbs on it, it's not going to do a whole lot more unless the head was opened up to the size of the carbs. Smoothbore carbs would be an upgrade regardless, however, but going up in size wouldn't do a whole lot. I can't remember what the stock opening size is on the small port heads, I will have to measure one in the basement later out of curiosity.

How's the weather up there? Good riding season yet? 75 degrees Fahrenheit today! Some friends were camping at the dirt bike trails south of here all weekend, and said it rained all day yesterday, and trails were a muddy mess, so no dirt biking today, taking the GS out for an all-day ride! First one of that kind this season!

I cannot see any stamping on the exhaust unfortunately.

Yes the cylinder head was ported and exhaust ports were polished.

I actually recently acquired a set of smoothbores that absolutely transformed how this bike runs. Terrifyingly quick now and does this yoshi 844c engine justice.

[Chuck78]

Very nice looking! I envy that Yoshimura exhaust so badly!
Did you notice on the exhaust hanger if it has GS 750 stamped into it? Or GS 100? It hangs a little low below the oil pan, and I was wondering if it was a GS1000 exhaust like the one that I have. Yours is upswept substantially more though, mine exits slightly higher than stock and more straight back. I opted to save it for a GS1000 engine in the Rickman CR race chassis build that I have stored away for the future after several other projects get done.

Was that cylinder head ported? Have you measured the intake ports with the carburetor boots off of the head? If you put bigger carbs on it, it's not going to do a whole lot more unless the head was opened up to the size of the carbs. Smoothbore carbs would be an upgrade regardless, however, but going up in size wouldn't do a whole lot. I can't remember what the stock opening size is on the small port heads, I will have to measure one in the basement later out of curiosity.

How's the weather up there? Good riding season yet? 75 degrees Fahrenheit today! Some friends were camping at the dirt bike trails south of here all weekend, and said it rained all day yesterday, and trails were a muddy mess, so no dirt biking today, taking the GS out for an all-day ride! First one of that kind this season!

[SpecialK]

Thanks Ed, still would like to source a larger set of carbs and eventually get it dyno tuned at my local shop.

[GSXR7ED]

Bike turned out great!


Ed

[SpecialK]

Added a pair of Progressive Magnum shocks and an oil cooler.

20180505_165715.jpg

[SpecialK]

Thanks folks! Yup, time to enjoy!

[pete]

Plus one to Larry's comment, turned out good! Should be lots of fun!

[nvr2old]

Yeah, pipe and paint make a huge difference. I like the black front fender, too. Well done, now go ride the crap out of it.

[SpecialK]

thanks chuck! I need to learn how to do that.

And yeah, weather was absolutely terrible up until Friday. Gorgeous this weekend though!

[Chuck78]

Looking very nice! You still have snow up there?! Wow. It got cold here for a week again but it's back to 70° now in Ohio, I rode a bunch today, Friday, and about a week or a week and a half ago!
Here I added your photos for you using some very simple UBB code:

[SpecialK]

20180422_195728.jpg
Side View


Finally got the new body work on! Overall I'm extremely pleased.

[SpecialK]

20180422_195718.jpg
Front View

[SpecialK]

20180422_195706.jpg
Rear View

[pete]

There's plenty of absolutely awesome looking pipes on the Webike web site but way out of my price range, you did well to score that set for sure.

[SpecialK]

I somehow missed this thread but am tuning in now... great job on the paint and I'm lovin' those Yoshi pipes too!

Thanks Pete! Yeah the pipe really is something, certainly can't imagine there are many of these still around. Sounds like the devil, its phenomenal.