Topic: OMG

[ekpent]

Couldn't agree more, considering we ride around on 2 wheels and quite a bit of engineering goes into making bikes "work" properly, i have seen some less than safe mods done to bikes here that make me cringe..In saying that, we all have to learn some how and making mistakes is all part of the deal....

WTF! Mick, you usually come out both barrels blasting.
You're getting old buddy. 

Speaking of dumb mods......remember the thread about rear brakes only?
That #$%* will kill ya. LOL

What was Rigid's named or called when he started?  Mind is starting to slip in my old age. As for the new poster probably not the most gracious way to say Hello Folks.

[scottly]

Once I design and build an aluminum diffuser style efi intake manifold and ss turbo header for a modern turbo I doubt anyone is going to care if I generalized a few hack job builds. I'll probably survive until then. 

OK, I'll bite: what is a "diffuser style" intake manifold? How are you going to provide the electrical requirements of an EFI system with the meager output of the 500 charging system?

[Tuff240]

People are already running microsquirt efi on CB's so that's been done.

A diffuser style intake manifold works best in turbo applications to ensure all cyl's are fed air as equally as possible. It won't really work as well in a carb'd draw thru type set-up that a lot of the old school systems I've seen here use.

With a basic plenum style intake manifold you will get rich and lean cyl's depending on the path of the airflow into the plenem. A diffuser style intake manifold helps equalize the incoming air throughout the plenum before it enters the individual ports.

Sorry, I've been up close to 24hrs and I'm having a hard time putting it into easily understandable words.

1st pic: Top smaller tube is where air will be entering. Bottom bigger tube is main plenum and will be capped.
2nd pic: Plenum is capped off and intake pipe is attached. On this particular manifold space constraints required the intake tube to actually have to be notched into a corner of the plenum. Not ideal, but still best compromise.

As far as headers go, a custom ss header wouldn't be an issue either. I actually kinda liked the basic header design on Greggos new turbo project bike so I would start there as a basis for the design.

3rd pic: Example of ss header we build for 4cyl 8v Volvo's.

[Retro Rocket]

People are already running microsquirt efi on CB's so that's been done.

Only on 750's as far as i know , i am doing injection on a 750 too....  The 500's charging system is worse than the 750's and i am using LED lights and maybe even a bigger better charging system of a later model Honda....

[Tuff240]

People are already running microsquirt efi on CB's so that's been done.

Only on 750's as far as i know , i am doing injection on a 750 too....  The 500's charging system is worse than the 750's and i am using LED lights and maybe even a bigger better charging system of a later model Honda....

Someone working on it: http://www.msextra.com/forums/viewtopic.php?f=101&t=45797
I also thought I saw someone here installing one on his CB500 also but can't find it fast enough.

Oh yeah, pic of finished manifold from above with wrinkle black powdercoat (per customers request), water injectors and electronic throttle body:

And a fun header to look at (custom built for a 67 barracuda).

[Retro Rocket]

Someone working on it: http://www.msextra.com/forums/viewtopic.php?f=101&t=45797

Quote from the link.

I am using a cased microsquirt (V2 ?) to control fuel and ignition on my Honda CB500 DOHC 180 deg twin (2000).

Completely different bike with a  far better charging system...

[scottly]

A diffuser style intake manifold works best in turbo applications to ensure all cyl's are fed air as equally as possible. It won't really work as well in a carb'd draw thru type set-up that a lot of the old school systems I've seen here use.

With a basic plenum style intake manifold you will get rich and lean cyl's depending on the path of the airflow into the plenem. A diffuser style intake manifold helps equalize the incoming air throughout the plenum before it enters the individual ports.

Sorry, but I don't see how this will have any positive effect on a turbo'd port injection setup. Post dyno reports both with a normal plenum and with the "diffuser". BTW, I don't think you're a troll; just a kid shooting your mouth off trying to impress people. IMHO

[333]

BTW, I don't think you're a troll; just a kid shooting your mouth off trying to impress people. IMHO

And that certainly won't work if you don't know the difference between a 500 DOHC twin and a 500 SOHC 4.  I'll give you the not knowing about the lack of current to run anything extra.

Good luck.

[Tuff240]

It's not like I invented this style of manifold. Audi ran a much nicer version (air enters from both sides) in their Group B cars in the 80's. As far as "proving" it to you, it's common knowledge that this style of manifold fills the cylinders much more evenly in an efi turbo app. We build quite a few 400-600hp 2.3-2.6L 4cyl turbos Volvos with all different styles of manifolds depending on customers budget/goals.

I just googled cb500 and efi, I always forget there are newer cb500's.

I'm not a kid either, unless you consider 40 a kid.

How hard is it to retrofit/upgrade the charging system? Nobody makes a better stator/rect/reg for the old CB500?

[Terry in Australia]

Welcome Patrick, you've pissed a few folks off, and while I agree that there are some shocking bikes belonging to members here, lots of the (mostly younger) members seem to like them, so even though they obviously offend your professional eye, you just need to accept that you can't put an old head on young shoulders, and ignore anything that concerns you, and just let Darwin have his way with them. Works for me. Cheers, Terry.  

[333]

There are no upgrades for most of the electrical systems of that era.  Some of the 750s can use a newer rotor, because it is still the same size, but not the 500.  Your only shot is to lower your usage of other things like LED turn signals and an HID headlight.

[Duke McDukiedook]

Yeah, the 500 and 550 electrical systems of the 70's left zero headroom for additional current usage.

[TwoTired]

So, what would you pay to make the 550 alternator make more power?    And, how much would be enough?

I have some ideas...

[Duke McDukiedook]

Does it include fissile fuel rods? 

[Tuff240]

Just to clarify, I really like the look of the stripped down cafe racer bikes. I also like the resto mod and full stock restorations. I don't personally care for the looks of the bobbers, trackers and brats but I can appreciate a quality build on anything.

I was just being over critical of a few builds I saw in the projects threads and probably mostly on youtube.

My desktop pic has been Twinline's RD350 for weeks now.

Back to the subject that has spawned from this mess, does anyone custom wind stators?

[70CB750]

If you can calculate the winding, you can wind it by hand too.

[scottly]

Regarding the alternator, some folks have adapted small belt-drive alternators, such as found on Kubota tractors. They put out 25 amps, or more, depending on the model.

[faux fiddy]

You guys need to lighten up a bit. You're all taken this way too serious.

Once I design and build an aluminum diffuser style efi intake manifold and ss turbo header for a modern turbo I doubt anyone is going to care if I generalized a few hack job builds. I'll probably survive until then. 

In the meantime, anyone have some extra carb leaf springs for a k1 500?   

you do have a point...I too see a lot of noobs doing some questionable mods.  The culture around here is pretty forgiving and we generally try to correct mistakes in a positive, encouraging way. 

Couldn't agree more, considering we ride around on 2 wheels and quite a bit of engineering goes into making bikes "work" properly, i have seen some less than safe mods done to bikes here that make me cringe..In saying that, we all have to learn some how and making mistakes is all part of the deal....

Yeah, wait 'til you see what I bought this week. It's finally in the van, had to lower the apes and fold the sissy bar down to fit it.

[Killer Canary]

Did you buy from this chimp?

[Duke McDukiedook]

You WISH you were man enough to ride that bike. 

[Terry in Australia]

Yeah, wait 'til you see what I bought this week. It's finally in the van, had to lower the apes and fold the sissy bar down to fit it.

Hmmmnn, not another "Cafe Racer" I hope, those things are so passe...........

[Killer Canary]

Thankfully, cafes are still rare as hen's teeth here. I'm the only guy I know who has one. If they go mainstream like cruisers I won't hesitate to park mine. I have many other bikes.

[Terry in Australia]

Thankfully, cafes are still rare as hen's teeth here. I'm the only guy I know who has one. If they go mainstream like cruisers I won't hesitate to park mine. I have many other bikes.

It's not a case of "If" mate, it's already happened. If they're thin on the ground in your neck of the woods that's good, they're as common as dog poo everywhere else.

I'm hiding mine until the Cafe Racer fad is dead, and they've all been recycled into Coke cans, then I'm gonna start it all over again, like Carpy did 10 years ago.

[Killer Canary]

Very shrewd acumen, Terry.

[nccb]

Did you buy from this chimp?

The guy taking the picture should have tried to merge into his lane to see if the monkey could turn.