Author Topic: CB350F Cafe Project - First Rodeo (Read 11144 times)

Gixxerusa · « **Reply #25 on:** August 30, 2011, 09:57:29 AM »

Nice built jlaxrips. Keep up the good work. Can't wait to see it done.

jlaxrips · « **Reply #26 on:** September 18, 2011, 04:17:56 PM »

Thanks for the tuning advice. Haven't gotten it right yet. Been moving the jet needles up and down and still seems to be loading up or something. I decided to order a Mac 4 into 1 exhaust in hope that a little back pressure will help it run better and be a bit easier to tune.

I was wondering if anyone knows the outside diameter of the subframe tubing on the bike? I cut off my passenger peg mounts and want to buy a frame clamp to fab an exhaust bracket. I'd measure it myself but my bike is like 20 miles away at a friends house and he isn't home. Appreciate any help!

bluesmoke69 · « **Reply #27 on:** September 18, 2011, 09:26:07 PM »

Love what you do with the bike.

jlaxrips · « **Reply #28 on:** October 07, 2011, 12:58:09 PM »

Hi all,

I finally got the bike all back together and on the road. Decided to buy a Mac 4-1 exhaust for some added back pressure and it seems to have helped a bit.

But, it's still not running great and is definitely way rich with the Mac exhaust and Emgo Pods. Right now I have the needles all the way down, which should be the most lean setting, right? (clip is on top slot of needle). To my knowledge it has the stock jetting. I just thought with pods it should be leaner, not rich. Air screws are at 2 turns out, I believe.

Any thoughts on what I need to get the thing dialed in?

Thanks!

-Justin

FuZZie · « **Reply #29 on:** October 07, 2011, 05:26:17 PM »

That turned into one nice looking little ride!

jlaxrips · « **Reply #30 on:** October 08, 2011, 11:44:22 AM »

Thanks Fuzzie, cant wait for it to run well and start riding it.

I was mistaken yesterday, the jet needles were one clip from being all the way down. Main jets are 75s, is that stock?

Lowered the needles all the way and hoping that will make a difference. If not I guess I need smaller mains? Seems crazy considering I'm running pOds and a Mac exhaust. It is a fresh motor...

Any thoughts?

seanbarney41 · « **Reply #31 on:** October 08, 2011, 12:37:48 PM »

double check your float level...you must use the clear tube method, it is the only way to make sure the fuel level in the bowls is where it needs to be! I'm not sure what is specified on the 350's, but you generally want the fuel level in the bowl to be as close to the gasket as possible without causing leaks, it's 4mm below the gasket on the 750's. Jetting and tuning will never make any sense until you get that float level sorted...if you haven't done so already...let me repeat...use the clear tube method!...measuring the float drop will not necessarily put the fuel level in the bowls where it needs to be...

jlaxrips · « **Reply #32 on:** October 08, 2011, 05:56:11 PM »

Thanks Sean. I'll check the float levels with the clear tube method when I can in the next few days. Seems to make sense.

I rode the bike today with the needles all the way down, air screws 2 turns out, and those 75 main jets and still freakin' running rich. Plugs get all fouled up, hangs up on idle, and won't pull worth a damn above 7k.

That just doesn't make sense considering the pods and Mac exhaust. Am I right?

In other news my battery also died, front blinkers and tach ceased to work as well. Guess taking it apart and cutting, sanding, polishing, assembling was the easy part, ay?

-Justin

jlaxrips · « **Reply #33 on:** October 20, 2011, 11:06:53 AM »

So, as I've said, I'm working with a mechanic friend to tune my bike. He was a bit resistant to the clear tube method and opted to adjust the floats with a micrometer to 24 mm as I've suggested in various threads on this forum. That actually seemed to make a difference and had the bike running better. However, it still wouldn't idle well -- after revving it hangs up high and then drops down to almost nothing and stall.

The current settings are as follows:

24mm float height
35 idle jet
75 main jet
Jet needles dropped all the way
Emgo Pods
Mac 4-1 exhaust

Just put in brand new points and have them adjusted properly.

My friend suggested I get smaller idle jets and I was wondering if anyone has any thoughts on that? Does that sound like my problem, has anyone run into it before on the 350f?

Sorry to sound like a broken record, just frustrated and not having luck figuring this out myself...

In other news, my girl painted my tank emblems and I've mounted them on the bike. Huge progress, ay?

-Justin

jlaxrips · « **Reply #34 on:** November 10, 2011, 03:45:28 PM »

Still not running great, but I think it looks pretty good.

seanbarney41 · « **Reply #35 on:** November 10, 2011, 05:57:59 PM »

...generally, pods and 4-1 will make it go lean, so you need to make jetting richer...not leaner...if I were you, I'd put the stock airbox on, jetting back to stock, and then make one change at a time until it runs good...sounds like you might have leaking carb boots also...

jlaxrips · « **Reply #36 on:** December 12, 2011, 04:18:43 PM »

So, my 350f is finally running pretty well. Turns out the right side slides were in the left side carbs and vice versa -- making it impossible to adjust and tune properly.

It's too bad it took me bringing it to a shop to figure it out... At least I know I'll never make that mistake again.

Anyway -- it's running pretty well but seems lean in the middle, so I'll be making those adjustments when it's warm enough in NJ to ride again.

I did put around 100 miles on it and absolutely loved riding the thing. It is a blast. Very happy with how it turned out and appreciative of all the help you guys have offered throughout the project. Can't wait to start the next one.

Hablo · « **Reply #37 on:** December 30, 2011, 09:56:01 AM »

How do you determine which slides go into which carbs?

nk140 · « **Reply #38 on:** December 30, 2011, 10:08:16 AM »

Where did you get the mount for the exhaust? I have the same exhaust but I cut the passenger pegs off like you and have been running a open header.

Killer Canary · « **Reply #39 on:** December 30, 2011, 11:58:40 AM »

If you're attached to your old pipes, you can try installing restrictors upstream of the muffler joints.You can vary the back pressure using different sizes, maybe enough for the jetting changes to become effective. Like that you kept the stock tank. The shape and the pinstripes fit the era. Honda didn't design many ugly tanks; Suzuki took care of that.

jlaxrips · « **Reply #40 on:** January 02, 2012, 11:07:43 AM »

@hablo -- Honestly I had a guy at a shop help me trouble shoot it and he's the one who found the slides were backward, I don't know exactly how to explain which way they face... someone else on here probably has a better idea. I believe there is a notch that helps control the mixture and it should be facing backward toward the air filters...

@nk140 -- I purchased a universal 3 piece clamp from dennis kirk (https://www.denniskirk.com/_.p272268.prd) and then cut, drilled, bent and painted some flat stock to attach to the muffler. It was pretty simple and works just fine. The clamp was a bit too big so I used some really high density foam to make it snug, which also helped avoid damaging the paint on the frame. These clamps look neat, as well: https://www.denniskirk.com/491656.sku?utm_source=shopzilla&utm_medium=cse

@Killer Canary -- glad you like the tank, I knew I wanted to keep it from the beginning, they really are beautiful stock tanks. I like how it still looks really stock but matches the color scheme I went with.

Can't wait to ride it when things warm up here in NJ. Still have to adjust the needles cuz it's a bit lean in the middle.

jlaxrips · « **Reply #41 on:** March 29, 2012, 10:55:18 AM »

So I've been able to ride my bike a bit, but unfortunately I'm still having trouble getting it to run right. Starting to believe it's the POD filters -- as many on the forum have pointed out.

On the few short rides I've taken, it has actually pulled pretty well with the choke half on. Hasn't made much difference at all to move the needles around, which I find strange. It also seems to be leaking oil from the head gasket at a pretty good clip, so I'm thinking it got damaged when we did the top end, is defective, or something is warped.

Thought I would try rigging up an intake setup with the stock airbox boot and some old motocross filters I have laying around. Probably not the most scientific solution but since I chopped the airbox mounts off it seems like the most logical way to test it out for now.

Anyway, thought I'd leave you all with a recent photo of the bike... at least it looks pretty good, IMO.

dagersh · « **Reply #42 on:** March 29, 2012, 11:20:44 AM »

Universally speaking - that is one hot bike!

Gersh

Owned · « **Reply #43 on:** March 31, 2012, 09:33:55 AM »

I can say with experience. I have a 350F cafe with pods and a 400F cafe with the plastic air box. The 400F was easier to get right. I have the pod set up working, but if the weather gets bad while you're out for a ride, soggy filters don't perform. Also, it's extremely hard to get volumetric efficiency across all intakes. 1 and 4 will be somewhat blocked by your legs etc. The stock box balances the airflow better. In the below pic, I'm running just the plastic box and a thick Uni Filter that's been cut down and simply clamped onto the oval metal sleeve.

mikbeanz · « **Reply #44 on:** April 28, 2012, 04:02:46 PM »

Wow great job! I love these little bikes

jlaxrips · « **Reply #45 on:** April 30, 2012, 07:16:52 AM »

@Owned -- thanks for the insight. I actually rigged up something very similar and hope to test it this week after doing a few other things to the bike.

@mikbeanz -- thank you very much for the compliment. I think it turned out pretty dang good. Just need to get her running right. Sure is fun, though.

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Author Topic: CB350F Cafe Project - First Rodeo (Read 11144 times)