Topic: whats a reasonable offer????

[dec505]

I have been looking for a druin supercharger since I have got my cb 750 and today I got an email from some saying they have one. He says it has never been assembled and that it was for a hillclimber. He also said he has a 1400cc Rc enginering motor with a falicon crank with hillborn fuel injection, and an f head with bigger valves. I'm not interested in the motor because I want to drive my bike on the street but I think he wants to sell them together. Anyway what would be a reasonable offer for all of this? $5000, If he won't sell me just the supercharger is there anyone out there who would want this motor? I would be happy to work out a deal with you.

[Terry in Australia]

As much as I'm frothing at the mouth at the thought of an RC1400cc engine in my bike, (I didn't even know you could take a 750 out to 1400CC?) I don't know why you'd want a supercharger on an otherwise stock(ish) CB750?

The mods required to make it mechanically reliable with the stresses inherent in adding a "Blower" would probably consume that $5K in quick time, and it'd still be a CB750, so still wouldn't handle and stop all that well, and with mebbe double the horsepower by adding a blower, it'd be almost unrideable?

My $0.02, of course, but I reckon for a few hundred bucks you could get Mike Rieck (The Head Man) to build you a great head, then just add an 836CC kit and a megacycle cam, and you'll be very happy with the result mate, and will live to enjoy your bike! Cheers, Terry.    

[dec505]

I have a ported head, megacycle cam  and a 836 kit in the bike now. It sucks it needs something more plus the supercharger looks cool.

[dec505]

http://www.650motorcycles.com/FShillclimbers.html
Here are pictures of the guys motor and supercharger in case you were wondering what a 1400cc looks like. My project has a full gsxr front suspension so it stops and handles a bit better then stock.

[KB02]

As much as I'm frothing at the mouth at the thought of an RC1400cc engine in my bike, (I didn't even know you could take a 750 out to 1400CC?) I don't know why you'd want a supercharger on an otherwise stock(ish) CB750?
The mods required to make it mechanically reliable with the stresses inherent in adding a "Blower" would probably consume that $5K in quick time, and it'd still be a CB750, so still wouldn't handle and stop all that well, and with mebbe double the horsepower by adding a blower, it'd be almost unrideable?
Terry.    

Yerah, but it would be really, really cool!      And, not to mention, it would be something different that you don't see every day.

[dec505]

Druins are so rare it would easily triple the resale value of my bike. I want something no one else has or can get. Driving to work everyday I see 5-7 cb750s. I know with the 836 and the supercharger I will have to fill up 104. Which really isn't a problem cause they sell it at the corner gas station, just the price is killer. But at least I will be able to keep up with my friends litter bikes. Anyway I want to make him an offer I'm not shure what to offer for a never used supercharger is $5000 really to high my dad said that was reasonable and the motor for $12000. I always end up buying something for what I think is a good deal then finding it a week later on ebay for half the price.

[Terry in Australia]

Well I agree that a blower looks cool, no argument there, but you better buy the engine too, as previously mentioned, your stocker (I'm talking crank, rods and tranny) won't last very long with a blower attached.

Personally, I think there's one too may zero's attached to those price tags, but hey, if you can afford it, then go for it! Cheers, Terry.

[eldar]

Sorry but supercharger or not, I dont see a cb keeping pace with a rocket. With the money you will spend, you can get something different, hey get a yamaha v-max. You want to keep the old look? well with the cash you want to spend, either get a modern motor and fabricate your own mods or get a v65. The v65 is a 10 second bike stock.

Besides the obvious terry stated, you primary chain wont last 1000 miles probably not to mention all the extra preventive maintenance that would be needed.

I guess I would not care if the blower was used or not. It has been sitting and is still subject to moisture and rust and the bearings may be frozen from age. If you can, find out what new price was and go no higher than that. The motor, I never heard abouta 1400 cc cb750 motor either. Highest I have heard was 1040 or somethign like that. That alone means boringthe hell out of the cylinders and having huge air gaps, then welding those closed and putting in large sleeves which may also need to be bored. I do not think there is even enough room between the cycler walls for something like that. Not even sure 1400 would be possible if the engine was stroked.

Maybe someone else such as riech might know more or hondaman but I just cant see a displacement almost double.

You can certainly try though but I think you will be looking at more trouble than anything.

[dec505]

Ok if your frothing at the mouth at a 1400cc supercharged four check out this supercharged 2500cc.

http://www.thefang.co.uk/thomas_walker.htm

[Geeto67]

why don't you save yourself the trouble and go get a new cbr. You will never make a cb750 fast enough to keep up with a newer liter bike ever (well maybe if you used that 1400cc motor and the supercharger), and if you by magic did manage to do it then you have given up all reliability to get there. 

[dec505]

I have a 2004 GSXR 1000. This is my project I want something you can't buy. All new bikes look the same. I was really undecided about buying the motor but thanks to Geeto I'm going to #$%*ing buy it, build a transmisson for it and drive it on the street just to show your #$%*ing ass. Tell me to save myself the trouble and buy a CBR. You don't know anything about my bike.

[low-side]

I don't know about the offer side of things, but keeping up with liter bikes in a straight line is possible with a CB750.  A full on turbocharged Cobra motor could put 150hp to the ground according to some old articles.  Best way to build the tranny was to take parts out of a CB750A so that you could use the 1 hyvo style chain rather than the two conventional chains.  As for the price of the equipment, $5000 sounds a little high, but if you can't get it anywhere else the price is basically what you're willing to pay and what they'll let it go for.
      Personally, I was looking at turbocharging mine.  A friend of mine has two small turbos he isn't doing anything with.  There are conversions to go two carbs, an ARD mag for a nice spark, and along with the 4 into 2 exhaust the David Silver Spares sells, it would be an easy job.  Good luck on whatever you decide to do.

[pmpski_1]

If you want it badly enough there is no such thing as a reasonable offer. Especially if it is rare. Take a look at the Barret-Jackson auto auctions that have been showing on the Speed channel lately. Or look at Ebay. What's a reasonable offer for a NOS tank or a nice 4-4 exhaust? Those prices are not reasonable to me, but I don't want them badly enough.

[Terry in Australia]

I have a 2004 GSXR 1000. This is my project I want something you can't buy. All new bikes look the same. I was really undecided about buying the motor but thanks to Geeto I'm going to #$%*ing buy it, build a transmisson for it and drive it on the street just to show your #$%*ing ass. Tell me to save myself the trouble and buy a CBR. You don't know anything about my bike.

Go on then mate, buy it, but don't just say "you're gonna", do it and post some pics, we all wanna see it, I'm still drooling at the thought of a blown 1400CC CB750! Cheers, Terry.

[eldar]

ahh dec, chill a little. The motor in that site did not look to be a 1400cc, simple as that. Like I said, a 1040 bores out the sides and needs to be welded shut with special sleeves put in. That engine appeared to have none of that. I suppose it might be possible to do a best of the century weld ob, but I doubt it. Also the amount of metal left between the cylinders looks to be way too much.

Sorry but you are trying to use an engine designed in 1968. There is only so much it can do. It will never be able to fully keep up with your average rocket unless you gear it too hell and it is a small rocket.

As I said before, An engine suposedly that size with charger on it will have no reliability. You want something different, fine but no one is going to see it if you always have to work on it. Keep that in mind.

It would be cool if it did work though.