Motorcycle Thread

[V8Transporter]

I built a single carb manifold for my wife's 750 Virago when the stock carbs rolled over and dies at 17k. But with a four I think that you'l have issues with the length of the four runners. Don;t know about the Honda stuff to help you, but the carb kits for my Seca arrived, were ten bucks each and came with needles and seats and O-ring, , bowl gasget.

[V8Transporter]

If gas is running out one crb and the float doesn't slosh, check the needle and seat for a problem. If the needle has a rubber tip, check it for a nick.

[fungus]

My plan for the four cylinder manifold was to have two tubes going straight to the outside (1,4) cylinders, then basically swirl the center two together to take up the tube length. That way they'd all be equal lengths.

While I was pulling the bottoms off the carbs again this afternoon, I pulled the seat and needle valve to check them; they were clean as a whistle, with even wear marks all around. It's definitely the float, but one float costs $55. I'll see if the glyptol trick works; if not, new carb set it is.

[fungus]

V8, did your wife's Virago seem to run ok after the carb swap? I love the idea of the simplicity of a single solex...

[hotpocket]

you won't be able to run one carb on an old four cylinder honda. you could do two though. cycle exchange makes a dual mukini setup for the 750. you could probably call and talk to them about it at least to get an idea of how they do it. is your 550 a single or double overhead cam?

[max16v]

Originally Posted by hotpocket

you won't be able to run one carb on an old four cylinder honda. you could do two though. cycle exchange makes a dual mukini setup for the 750. you could probably call and talk to them about it at least to get an idea of how they do it. is your 550 a single or double overhead cam?

I've seen Weber / Dellorto manifolds for CB750's before. One guy was running a single 40...maybe 44 Dellorto. So much bad ass. I have a side draft 40 Dellorto that is set up for a turbo, but I threw the idea of putting it on my bike. Oh man...

[max16v]

LowHeat

LEAVE IT. Those tins are bad ass with the subtle marble finish and the matte black. Don't touch it, it's perfect!

[fungus]

Originally Posted by hotpocket

you won't be able to run one carb on an old four cylinder honda. you could do two though. cycle exchange makes a dual mukini setup for the 750. you could probably call and talk to them about it at least to get an idea of how they do it. is your 550 a single or double overhead cam?

SOHC. Hate to pry, but why exactly could one not run a single carb? Dual carb solex would require even smaller jets, but it's doable. If I were going to run dual solex though, I'd rather use a stock setup off of a '73-'76.

[fungus]

Originally Posted by max16v

I've seen Weber / Dellorto manifolds for CB750's before. One guy was running a single 40...maybe 44 Dellorto. So much bad ass. I have a side draft 40 Dellorto that is set up for a turbo, but I threw the idea of putting it on my bike. Oh man...

What began as a stock Honda VT750...

[Ryan]

sick

[fungus]

Humina humina humina...



ebay



I'm also finding a lot of side-draft rochester carburetors (2-bbl) which would work quite nicely. Dangit, my gears are turning.

[hotpocket]

Originally Posted by fungus

SOHC. Hate to pry, but why exactly could one not run a single carb? Dual carb solex would require even smaller jets, but it's doable. If I were going to run dual solex though, I'd rather use a stock setup off of a '73-'76.

I digress. you CAN. but it won't run well. there's so much variance from cylinder to cylinder in these old engines that a single will run like crap. with four carbs, each carb can be tuned to it's specific cylinder.
The reason most guys switch to two carbs i because they've got some performance goodies in their engine and need more than just the stock carbs to fully utilize them.

[V8Transporter]

Regarding my wife's Virago. Once I dialed in the jetting and tweeked on the mainifold I built ( gas welded from old Sportster exhaust tubing, with a shop built flange), she runs just fine, With lots of grunt for a 750. But, I was able to make the runners pretty much equal, though the Mikni (38mm with accelerator pump) is set up on the rhs of the bike ala a Harley. This was done due to the location of the cylinder's intakes. After I had the bike running well, I found complete kit with a cast intake on the internet. I saved a bunch of bucks (over the kit) but put in a couple days + of time...plus, like the rest of you guys, I enjoy building my own stuff. We rode to to coast yesterday for fish and chips and the bike ran great...Sherrie like s it better than with the stock carbs...says the bike is more responsive and pulls from lower rpms. Sherrie just loves the bike. With winter on the way I'm installing a set of heated grips for her. The Virago has run this set up for over a thousand miles now. MPG is about 44 to 48.

That VT 750 looks really nice.like a lot of thought went into the frame. Is that a Weberator?

[fungus]

Originally Posted by hotpocket

I digress. you CAN. but it won't run well. there's so much variance from cylinder to cylinder in these old engines that a single will run like crap. with four carbs, each carb can be tuned to it's specific cylinder.
The reason most guys switch to two carbs i because they've got some performance goodies in their engine and need more than just the stock carbs to fully utilize them.

Ahh, now that's an answer I can live with. Granted, I'm sure the cylinders don't deviate any more than, say, a stock 1600. However, with something as small as 550cc's, you have to squeeze every bit of power out that you can. I'll keep this in mind.

Originally Posted by V8Transporter

Regarding my wife's Virago. Once I dialed in the jetting and tweeked on the mainifold I built ( gas welded from old Sportster exhaust tubing, with a shop built flange), she runs just fine, With lots of grunt for a 750. But, I was able to make the runners pretty much equal, though the Mikni (38mm with accelerator pump) is set up on the rhs of the bike ala a Harley. This was done due to the location of the cylinder's intakes. After I had the bike running well, I found complete kit with a cast intake on the internet. I saved a bunch of bucks (over the kit) but put in a couple days + of time...plus, like the rest of you guys, I enjoy building my own stuff. We rode to to coast yesterday for fish and chips and the bike ran great...Sherrie like s it better than with the stock carbs...says the bike is more responsive and pulls from lower rpms. Sherrie just loves the bike. With winter on the way I'm installing a set of heated grips for her. The Virago has run this set up for over a thousand miles now. MPG is about 44 to 48.

That VT 750 looks really nice.like a lot of thought went into the frame. Is that a Weberator?

Sounds like you've had a very good experience with this mod! Granted, it's a 2-cylinder; but still, it worked out well for you. I still am completely enamoured with the idea of running a single carburetor vs. 4, so I'm entertaining the idea still. I think I may have fixed my float issue for now, but the stock carbs had some serious aluminum rot in them. #4 just barely has a little meat holding the high speed jet in place. I'll do my best to dial it in with the stock carb set, work on fabbing up a manifold for a rochester side-draft as soon as I can get my hands on one, and compare the two. I've got some pretty cool ideas for making the runners equal lengths.

[V8Transporter]

Most likely, your single carb set up will run really well and you'll be able to start an "I told you so" thread. A lot of my projects began with an idea and someone saying, "well that'll never work." Heh, heh.

[1965aaron]

I'm seriously considering trading my bus (69 baywindow) for a 97 zx6

http://seattle.craigslist.org/tac/mcy/2048107595.html

guy came by today with it. looks and sounded pretty sweet, anyone have thoughts on it?
it'll be my first bike. (ive ridden on and off on friends bikes)

[ThrasherBill]

Originally Posted by 1965aaron

I'm seriously considering trading my bus (69 baywindow) for a 97 zx6

http://seattle.craigslist.org/tac/mcy/2048107595.html

guy came by today with it. looks and sounded pretty sweet, anyone have thoughts on it?
it'll be my first bike. (ive ridden on and off on friends bikes)

First thing I'd be asking about that ZX6 would be why does it have no fairing? How hard was it dumped? How much is your bus worth and what does the seller value the bike at? There are lots of bikes for sale cheap right now because of the economy so I'd be careful about jumping on that one just because the seller likes your bus.

[V8Transporter]

I second that. A dumped bike could have a tweaked frame or other surprises (been there, had that done to me). Plus I don't think a 13 year old bike is worth a Bay. Just my opinion.

[hotpocket]

depending upon miles that's probably not worth more than $2000. less if it's been dumped

[1965aaron]

the guy said it didnt have the fairings when he got it.

seems like theres a lot of things that could be fishy that could mean its probly not the best trade then. thanks for the input guys!

[Turbo Punk]

Looks like I may be putting my Suzuki RF900R and my Honda CB750 up for sale. I've been thinking of upgrading and have found a Honda CBR929RR in my price range. I've been looking for one of these for some time. I just hope things can fall into place.

[fungus]

A guy I'm working for right now has an '86 Goldwing (1200) in the shop with a bad stator. We dropped the engine (PITA!) and removed the rear engine cover. For some reason though, the stator is stuck on the locating shaft. It should be a slip fit, but the one on there right now is aftermarket, so most likely it's machined to an incorrect inner diameter. Any suggestions on how to get it off? There's nothing to hold on to except for the winding horns, and I'm afraid I'll break them. He'd like to possibly have this one re-wound; of course, before it's reinstalled, I'll shave some off of the inner diameter. I've considered heating, may try that. Anybody else had this problem?

[Unkl Ian]

Probably some Goldwing board somewhere,
with people that have had this same problem.

[Unkl Ian]

Latest on the Paul Jr rip off t-shirt design:

http://www.chopcult.com/news/blogs/s...-09-35-11.html

[BEERcobra]

Paul jr
"that looks sick, right?"
"that looks good, right?"
"that looks cool, right?"
"that goes with the theme, right?"

i cant stand the guy, lazy and has to have people say he did a good job.

same with the Detroit Bro guy. hes the same type of person