Author Topic: CB550 Gulf road race build 592cc (Read 78975 times)

MRieck · « **Reply #150 on:** November 15, 2013, 08:40:14 AM »

Run the engine on PBR for the first 10 miles....that'll break it in.

Doctor_D · « **Reply #151 on:** November 15, 2013, 11:05:27 AM »

Quote from: MRieck on November 15, 2013, 08:40:14 AM

Run the engine on PBR for the first 10 miles....that'll break it in.

Heh... wise ass.

Mike - I'll be in Milford around turkey-day. Would love to see you, perhaps get a beer. I'll drop you an email with my itinerary.

Dimitri13 · « **Reply #152 on:** November 17, 2013, 02:33:09 AM »

Wow, didn't intend for my build thread to turn into a hook-up thread.

...

Godffery · « **Reply #153 on:** November 17, 2013, 11:36:21 AM »

Sorry if you have stated this somewhere already, but...

What are you using for carburetion? stock, or something juicier?

Dimitri13 · « **Reply #154 on:** November 17, 2013, 11:38:40 AM »

Stock carbs, using stock plenum (the thing with the built in stacks) with a large cone filter.

Godffery · « **Reply #155 on:** November 17, 2013, 01:24:10 PM »

Interesting,
I look forward to fallowing your progress.

Dimitri13 · « **Reply #156 on:** November 17, 2013, 05:00:09 PM »

It won't be all-out race spec with that setup, since the single large cone filter is a bit restrictive. I do hope to have a decently streetable bike with it though.

I will eventually upgrade to CRs though, unless someone comes up with a kit to fit Mikuni RSs to a 550, like they have for 34s on a 750.

Tews19 · « **Reply #157 on:** November 17, 2013, 06:19:00 PM »

I have read CR's are over kill even for a hopped up 550...

Godffery · « **Reply #158 on:** November 17, 2013, 08:19:07 PM »

I have developed a pretty successful CR26 kit for the 550 but have often thought about trying it with the Mikuni RSs.

LMK if you care to see how I do the CR kit.

Dimitri13 · « **Reply #159 on:** November 17, 2013, 08:21:57 PM »

Sure, I'm interested.

Godffery · « **Reply #160 on:** November 17, 2013, 08:35:32 PM »

Ok, here is a link:
http://www.vinmoto.org/gallery/v/VinMoto-Garage/album03/Godfferys-Garage-123/95/Keihin+CR26+Carburetor+Kit+for+1974-1978+Honda+CB550/

I teamed up with Power Barn to supply the Carbs themselves because I do not do enough volume to have a Sudco dealership.

Dimitri13 · « **Reply #161 on:** November 17, 2013, 11:54:36 PM »

Looks good. What are the "rubber carburetor holders?"

And is there anything to keep the carbs from just hanging, because there's no stock airbox to connect to the other side.

KrautKoffin · « **Reply #162 on:** November 18, 2013, 12:15:29 PM »

Quote from: Godffery on November 17, 2013, 08:35:32 PM

Ok, here is a link:
http://www.vinmoto.org/gallery/v/VinMoto-Garage/album03/Godfferys-Garage-123/95/Keihin+CR26+Carburetor+Kit+for+1974-1978+Honda+CB550/

I teamed up with Power Barn to supply the Carbs themselves because I do not do enough volume to have a Sudco dealership.

Those look awesome.

Godffery · « **Reply #163 on:** November 18, 2013, 12:32:36 PM »

The "rubber carburetor holders" are just new stock intake boots.
I should change that, the way its worded now does sound rather dumb. = \

The CR Carbs are much lighter than the old stock and don't really need any support (especially with my machined spigot adapters) but as a precaution, I have used a standard Zip tie from the throttle cable bracket to the frame.

KrautKoffin · « **Reply #164 on:** November 18, 2013, 12:47:34 PM »

Quote from: Godffery on November 18, 2013, 12:32:36 PM

The "rubber carburetor holders" are just new stock intake boots.
I should change that, the way its worded now does sound rather dumb. = \

The CR Carbs are much lighter than the old stock and don't really need any support (especially with my machined spigot adapters) but as a precaution, I have used a standard Zip tie from the throttle cable bracket to the frame.

From everything I've read, I keep hearing CRs are overkill for the 550, even on a built motor. Is there any truth in that?

Godffery · « **Reply #165 on:** November 18, 2013, 01:22:38 PM »

Most people have been using the CB29's and those ARE too much for a stock street 550.

The primary reason is no one else has supplied the 26's in a bolt on kit. Sudco didn’t offer it, so none of the dealers thought to develop one on their own.

I also solved the clearance issue with the Pod filters by producing shorter intake spigot adapters.

Dimitri13 · « **Reply #166 on:** November 18, 2013, 02:01:32 PM »

I know cyclex sells a cr26 kit, but I believe I read something about having to adapt throttle cables, clearance issues, and other problems.

The only problem I'd see with getting your kit is the new intake runners are not port matched for my ported head.

Bankerdanny · « **Reply #167 on:** November 18, 2013, 02:19:11 PM »

The CR kit is beautiful, but it costs 2x as much I will end up having in my 550 when it is all said and done.

KrautKoffin · « **Reply #168 on:** November 18, 2013, 02:43:01 PM »

Quote from: Bankerdanny on November 18, 2013, 02:19:11 PM

The CR kit is beautiful, but it costs 2x as much I will end up having in my 550 when it is all said and done.

Ditto.

Godffery · « **Reply #169 on:** November 18, 2013, 02:46:27 PM »

Quote from: Dimitri13 on November 18, 2013, 02:01:32 PM

I know cyclex sells a cr26 kit, but I believe I read something about having to adapt throttle cables, clearance issues, and other problems.

The only problem I'd see with getting your kit is the new intake runners are not port matched for my ported head.

I think that is because CycleX is trying to adapt a kit made for the CB400F. They are laid out rather differently.

Yes, if you wanted them to be ported like your others, that part would have to be done on your end.

There is no doubt that it's a hefty investment, But they do provide an average 10% HP gain right out of the box.

Dimitri13 · « **Reply #170 on:** December 16, 2013, 11:26:35 PM »

Made some progress (but fighting what may or may not be an issue). Head all bolted down and torqued to 21 ft-lbs on APE studs. Showing off the WebCam 358b, Dynoman adjustable cam sprocket, Kibblewhite valves, springs, and titanium retainers. After I get the cam (non?-)issue sorted out, I can degree the cam, bolt on the valve cover, then install the engine in the frame. But not before I get the rest of the powdercoating off the frame, just a few spots where the engine brackets go. I can take care of the clutch, oil pickup, accessories, and covers later.

Got my exhaust back. Carpy's yoshi replica pipe that was ceramic coated matte black. Will get a picture up later. Finally got my last powdercoated part back as well; a fork bottom that was giving him some SERIOUS issues, possibly something to do with a solvent soaked into the pores, air pockets in the casting, or something. Didn't come out perfect, but after 5 attempts, the blemishes aren't noticeable.

Now I can finally assemble the front end with a billet top clamp, powdered lower tree fork bottoms and clamps, and caps, Tarozzi fork brace, new CycleX fork tubes, Progressive springs, all new seals and oil, as well as tapered bearings.

After all that I can get the HondaMan rebuilt and modified swingarm on, and be just about ready to fire up.

I'm not even going to mention the trouble I'm going to have getting it safetied, especially since they switched us to a system where the mechanic uses an ipad to take pictures of everything...

bwaller · « **Reply #171 on:** December 17, 2013, 04:16:10 AM »

What cam? If you haven't yet, check clearances between cam lobe & the "oil dam wall" in the head, plus the cam lobe & underside of rocker.

Dimitri13 · « **Reply #172 on:** December 17, 2013, 07:49:47 AM »

Just a webcam 358b. What in the heck is an oil dam wall, and what do you mean underside of the rocker?

bwaller · « **Reply #173 on:** December 17, 2013, 11:54:07 AM »

In the pic see where there is material removed to allow lobe clearance. With the valve cover upside down and with rockers installed it's easy to see the Megacycle 126-20 cam lobe contacted the underside of the rocker arm before it touched the contact pad of the rocker.

I know the milder 58a cam clears fine, maybe yours as well or you likely would have heard the warning before this.

Dimitri13 · « **Reply #174 on:** December 18, 2013, 12:22:10 PM »

Oh, yeah I checked those. The lobes are fairly close to the walls, but no contact. The rocker arms looked good too.

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Author Topic: CB550 Gulf road race build 592cc (Read 78975 times)