Stu's Fizzer

Well I haven't gone too far yet... only a short 30 minute ride but no sign of any issues at all thus far. No boggyness, no trouble at low end but may be a tad lean at the top end. Have to do a bit more testing on that though because it was so faint I could have been imagining it....

That said, when i had her apart i checked all the spark plugs and they were all sweet as so even if she is lean it's not significant enough to show it...

 

It's back at stock (middle position) and I think it's 2.75 turns out (haven't touched it since last adjustment) so if anything it should be running a tad rich.

Yeh I know we've been over it several times... think of my logic like a tyre with 60% tread. You could replace it, but do you need to? Bit more life in those needles yet I think. The wear seems even to me, although discoloration exists - without any major performance hassles I'm inclined to run with them a bit longer. Personal choice, ok?

For fuel this time around I filled up with 91 but normally I'd be putting 98 premium in it. To be honest I haven't noticed any particular difference between them...

Well with all the fiddling I think I'm finally in a good spot with these carbies and I'm not going to touch them again unless I absolutely have to!

I do have a question for you guys though, does your engine cover (LHS, the one with the YAMAHA logo and yes I'm too lazy to look it up right now) get hot to the touch after a ride...?

 

Hmm. May have to rethink my painting strategy, didn't expect to need high temp paint on that area. May get some paint peeling off now lol

 

Still need to do the rear rim but haven't had the time.

The front brakes are being a bit weird though, they seem really "grindy" and dust seems to be pouring out of them. The pads weren't bad neither is the disk that old so I'm thinking it may be time to change the pads as they might just be deteriorating due to age perhaps? Normal riding is OK but when you brake hard you can feel them grinding. When I had the front wheel off I didn't do anything to them other than spray the outside with degreaser and give them a bit of a clean.

 

Thought I should give an update...

All running very well. I think since I did the valve clearances I can back off the pilots a little because it's just a tad on the rich side, so will be pulling back 1/4 turn at some stage over the holidays. I may even have some time to mess with some electric-based tuning to see if I get anywhere interesting, been meaning to do that for a little while.

Clutch does need attention though, now I've got the kit will be looking at putting it in at the next oil change - it's slowly getting more noticeable and I reckon new plates will give her plenty of pickup.

Had a bit of fun with a honda 300 on the way home from work today, the other guy was playing along. Don't think he quite had the edge I did though, so even with my fat bum and a clutch slowly dying the fizzer goes alright for an overpowered bicycle!!

What is on my mind now is whether or not I dip into a more cosmetic type of restore. Really clean her up and look at new fairings/new paint job. Don't want to throw big $ at her though, maybe chinese fairings will be OK. Even if I upgrade to another bike club rego next year means I could keep this old girl as a bit of a show pony (haven't seen another in this colour scheme on the road to date so I figure they must be a little hard to find). So it's a bit of mind vs wallet at the moment! either way, clutch first!

 

Fizzer surgery. Everyone's favourite kind of surgery. Maybe... Kind of... OK perhaps not. But necessary none the less...



This I thought was a bit weird. Wish I could clean it out as the globes still work fine. Anyone know where to get replacement globes, I've scowered the interwebs and visited a few shops they seem like they are a H4 but all the pins on the ones I am seeing are fatter so they won't fit the plug. There's a very old thread here about globes but not much info, I've left a message with powerbulbs to get their thoughts.

 

It's Koito Japan 12V55/40W. The only other marking is on one of the pins that says "01J".

It's a dual high/low beam halogen (ie two filaments).

 

Wellllllllll

New cam chain is in. Making different noises but definitely quieter. Bike wouldn't idle first up though, had to wind the idle right up. Hard to start and hesitant through the rev range again... methinks a carby tune is in order and is probably running a bit lean. Find that a bit strange as to why a new cam chain would make it run leaner... logic escapes me today - brain is dead.

Oh and @Phil I found my little fuel tap piece. Must have fallen through the bike and sat underneath as it fell out when I wheeled the bike out and went for a ride. not in the fridge after all! (and thank the good Lord not in the engine!)

 

Yeh it's middle clip, 3 turns out last time I set it. I'm going to go for a ride with the choke on to see if I get some improved responsiveness... that should at least tell me whether the problem is too rich or too lean (I reckon it's still to lean as you are implying though).

 

Thanks man. I've actually been looking into a conversion kit... may give it a go at some stage because $40 a bulb is a bit of a joke!

Yeh I made her richer but it hasn't seemed to change anything. Hesitant through the middle rev range but OK down low and up the very top. Suppose that means carbies have to come off again, bit annoying but I do own a fizzer so it serves me right.

Might check the plug connections too though just in case.

 

Basically when you are really hammering the throttle it is sorta jerky through spots is the mid range like it's losing a bit of power. You can still get to the top end but it's not smooth.