Idle late night musing: Sensible, streetable engine mods?

[morthrane]

I hear ya on the rough maintanence. I just got done changing out the air filter and spark plugs on my R1, as well as changing out to some new throttle cables.

I want to kill whoever designed the pulley setup on the R1's carb bank. Honestly.

Anyway, I'm no drag racer. I like corners better, but I kind of bought the Katana as a cruiser of sorts-- only a cruiser with the balls to match the image.


BTW cbxchris, you mentioned billet output shaft. Do you know if anyone makes an output shaft designed specifically to offset (such as in a 5.5" rim with a 180mm wide tire) the sprockets? That is, rather than using the stock output shaft and using an offset sprocket.

[cbxchris]

On the offest no I don`t know of anyone that makes this type output shaft. If its only a 3/8 inch offset with a billet shaft and a upgrade in tranny bearings you probably could get by unless you are doing some serious drag racing with lots of HP.

[cbxchris]

Old school I had a 67 coupe with a 427 with tri power.....lets just forget the fact like a fool I sold it :twisted:

[oldschoolGS]

I was in Scottsdale, AZ for the last Barrett-Jackson auction- We should have all kept our muscle cars. Biggest surprise was a 69 Camaro Z-28 with original 302/4 speed with all documentation. Went for $112,000, and no I did not type too many numbers. They were many big block 427/390 hp Vettes, all at $80,000 and up. These were all exceptional cars, but the value and market for them is incredible. Ride On, Ed.

[cbxchris]

Unreal are all I can say about those prices. I had a 69 camaro SS/RS and a 69 Boss 302.....oh well. One thing about it though the old bikes are going pretty high now too. A good cbx goes for 4K up now and a good 1150 is a steal at 3K. I`ve noticed the GS1100`s are going up also. I think the crotch rocket seating position turns a lot of people off. It did me on the hayabusa. I rode a few 3-400 mile trips but someone had to help me off when I stopped. 8O I have been watching the stuff coming out for the busa`s again though...heli bars and genmars. I think honestly I can feel another busa pulling towards me now 8)

[lecroy]

I knew a few of you would pipe up in defense.

Got to disagree about slow. My last year of competition I had a GS based turbo/nitrous funny bike that ran mid 4`s in the 1/8 at around 152 to 155. In the quarter high 190`s were common with low 7`s.

Well, let's see if we are comparing apples to apples. What parts of the original GS are you using in that funny bike? Cases, head and some parts off the crank? Any chassis parts? It sounds like the HD class where you only need to place the factory decals on the bike. People don't call them HDs, and I wouldn't call it a GS. Or am I way off base and that funny bike is all GS??

It is still very common to see them at the track. My guess is with Suzuki paying to run the newer blocks, they won't be around a whole lot longer. Becoming extinct, like the dinosour.

So, do we get to see a few pics. of the old girl?

[RacingJake]

So, do we get to see a few pics. of the old girl?

Here you go, high tech and cheap too.



My nine year old son leaves me at the line everytime.

[cbxchris]

Off that GS engine I ran a 1150 head,cases,modified crank,various engine related parts(oil pump etc.) I built the last hayabusa I had. Without going into detail you will take almost as many parts out of it as a modified GS. Oh I can`t argue about the HP potential of the hayabusa. The one I did was as streetable as a stocker and made 219 at the rear wheel. It was big though. For drag racing this is the catch. The crank and cases cannot stand the HP that the engine makes. Its to light. Thats why all pro stocks still use the roller bearing cranks. The hayabusa cranks are breaking also just like th GSXR series but you have to admit it makes the power. On my bike I ran a 3 speed orient express tranny(junk!). It still broke them too. 3K a pop. I guess this isn`t apples to apples but its the best way I can describe the difference. I like both of them. One thing that I will say before geting out of here. The hayabusa feels better at 150mph than a 1150 at 80. They have got thier act together on that chassis. Oh and BTW anyone seen the new BMW K1200s? 160HP....looks awesome!

[morthrane]

Oh and BTW anyone seen the new BMW K1200s? 160HP....looks awesome!

That's what's got me excited. A real production sportbike using a hossack frontend instead of a telescoping set of forks. I really hope it can live up to the excitement I have over the new K bike.

Althought, I was a bit puzzled that it doesn't have a center stand. Very un-BMW-like.

[lecroy]

Off that GS engine I ran a 1150 head,cases,modified crank,various engine related parts(oil pump etc.)

No mention of the body parts so I assume none were used. I'll give you the crank. There's always a weak point and the old 1100 engine has had 20 years of aftermarket development done on it.

A better comparison is my 10 year old GSXR will out run my 21 year old GS any day. The GSXR is factory stock and the GS has a few minor mods. I would just get a newer bike if your wanting cheap performance.

[cbxchris]

I have to agree if all out performance is the goal there is only one way to go..haybusa.

[lecroy]

Are you letting the kid drag it yet?


Jake, do you see a lot of the junior dragsters down there? We have a lot that run at the local track. I had no idea what they were trying to do with them. I checked one out and was impressed. Cross-over delay box and such. I gues they can run down to 12 seconds in the 9yr old and down class and as low as 7's once they reach 10 yrs. old. This is on the 1/8. It's funny to watch them run the traps at 50-60MPH. Some must have several thousand $$ tied up. And they all run these little motors that are all polished up. Many of them even use a tow vehicle. From what I was told they can run anything for a setup, but just can't run under the times. Why not a small 2-cycle 125 engine with chain drive??? Kids really like it.

[oldschoolGS]

The Busa is a good bike if you are pointed in a straight line, otherwise it is a Battleship. I also perfer the corners so it is not my choice ride, but if I was going dragracing, I probably would go the GS1100/1150 route for ease of wrench turning and the ability to apply the KISS principle. The question to ask is; Who wants to work on a Busa? Ride On, Ed.

[RacingJake]

Those kids are fast. They don't look it when they come out of the hole, but at the other end of the track the timing lights tell a different story. Some of these kids run faster than my Sporster. Thoses little engines can make some noise just idling. I asked one of the parents and he said his jr dragster weigh around 300 pounds and ran in the 7's at over 80mph.

maybe I need to mount some of those small reat tire's on my bike too

[lecroy]

Those kids are fast.
maybe I need to mount some of those small reat tire's on my bike too

Forget thos tires and think BIG.. Sad, but he sure had a nice bike.

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