I'm a sucker (or, what I'll agree to do to help an old bike get back on the road)

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15 May 2007 20:23 #140483 by N0NB
Replied by N0NB on topic Cracked overflow tubes
So far the JB has been holding as it has been exposed to gas for several days. Solder would probably have been another good idea.

I finally got everything back together last night and got it going. Things were way off and it took some fiddling to even to get it to run smooth. Turns out that #1 was so far out of sync that it was pulling the rest along and they were barely even firing!

Everything is sorted now and the front brake master cylinder got repaired this afternoon. All that remains is the manual petcock installation and a little cleaning before I take it back to him.

Nate

Nates vintage bike axiom: Riding is the reward for time spent wrenching.
Murphys corollary: Wrenching is the result of time spent riding.

1979 KZ650 (Complete!)
1979 KZ650 SR (Sold!)
1979 KL250 (For sale)
1994 Bayou 400 (four wheel peel :D )

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16 May 2007 09:32 #140607 by Josh2021
Replied by Josh2021 on topic Cracked overflow tubes
Sounds good, glad to see another one put back on the road and not out to the pasture.

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17 May 2007 04:15 #140853 by N0NB
Replied by N0NB on topic Cracked overflow tubes
Last night I opened the fuel tank to find a rusty flaky mess. No way was I going to ignore that and potentially foul up the carbs in short order. A coworker had bought a POR-15 tanks sealer kit on my advice, but then didn't even open the box as someone bought the bike they planned to fix! So I bought the kit off of him last night and did the cleaning and metal prep steps. Tonight I'll do the sealer.

Here is the gunk that came out of the cleaning step.


Nate

Nates vintage bike axiom: Riding is the reward for time spent wrenching.
Murphys corollary: Wrenching is the result of time spent riding.

1979 KZ650 (Complete!)
1979 KZ650 SR (Sold!)
1979 KL250 (For sale)
1994 Bayou 400 (four wheel peel :D )
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17 May 2007 05:30 #140873 by DrWhizBang
Replied by DrWhizBang on topic Cracked overflow tubes
N0NB wrote:

Here is the gunk that came out of the cleaning step.


EEEEEWWWWWWW! :-b

KZ650C2 w/810CC in Saint John, NB
-- a sleeper, methinks.

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17 May 2007 06:08 #140890 by N0NB
Replied by N0NB on topic Cracked overflow tubes
It looks much worse, actually. The flash of the camera allows the bottom of the bucket to be seen. In normal light the gunks is too dark to see the bottom.

Nate

Nates vintage bike axiom: Riding is the reward for time spent wrenching.
Murphys corollary: Wrenching is the result of time spent riding.

1979 KZ650 (Complete!)
1979 KZ650 SR (Sold!)
1979 KL250 (For sale)
1994 Bayou 400 (four wheel peel :D )

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17 May 2007 07:09 #140918 by H2RICK
Replied by H2RICK on topic Cracked overflow tubes
I don't know about soldering the cracked overflow tube. I don't think solder would stick to the brass very well, especially since this is (more or less) a high vibration area with the overflow tube having the additional problem of being anchored at only one end. It would act like a kind of tuning fork and might just spit the solder out/off quite easily. A brass brazing operation would be the ticket but would heat up the bowl way too much and may cause it to melt, especially where the tube is press fitted into the bottom of the bowl.
I like the idea of putting a chunk of thin wall tubing over the outside of the tube. An ingenious bodge. I'd use urethane fuel line so it wouldn't harden with fuelexposure/heat/age. The PVC crap that many guys use for fuel line gets hard almost instantly and is totally useless.
I'm still searching for the correct diameter tube but metric brass tubing is not exactly easy to get in North America. Are there any Euro members on here with access to brass tubing ?? Model railroad hobby shops usually carry an assortment of that kind of thing. Maybe in Europe they stock the proper metric tubing ??? Fingers crossed....
Any/all help gratefully solicited on this niggling little matter....

KZ650C2 Stock/mint. Goes by "Ace".
H2A Built from a genuine basket case. Yes,it's a hot rod.
GT550A Stock/mint. Pleasant stroker.
2006 Bandit 1200S for easy LD rapid transit
Various H2 projects in the wings.

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17 May 2007 13:41 #141048 by Patton
Replied by Patton on topic Cracked overflow tubes
N0NB wrote:

...bought a POR-15 tanks sealer kit...did the cleaning and metal prep steps. Tonight I'll do the sealer....


Was hoping for a live action report on the "b-b's and bolts -- rotate in clothes dryer" method. :P

1973 Z1
KZ900 LTD

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18 May 2007 08:21 #141255 by N0NB
Replied by N0NB on topic Cracked overflow tubes
This one could probably have used the BBs and bolts in the drier to good effect. However, I did the sealant step last night and it looks to have turned out very well (I did a quick look this morning). Now it needs 72-96 hours to cure.

I talked to the owner yesterday and he said he had put sand and water in it a few years back and let it ride on his pickup for some period of time. It also rusted rather quickly again. I doubt that'll be an issue for him again.

Nate

Nates vintage bike axiom: Riding is the reward for time spent wrenching.
Murphys corollary: Wrenching is the result of time spent riding.

1979 KZ650 (Complete!)
1979 KZ650 SR (Sold!)
1979 KL250 (For sale)
1994 Bayou 400 (four wheel peel :D )

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21 May 2007 19:09 #142192 by N0NB
Replied by N0NB on topic Final pics!
Well, there are no leaks and no rust in the gas. :laugh:

My neighbor and I rode it around. There is a stumble between idle and about 2500 RPM that I minimized by careful dwell setting and timing. I assume it needs some new ignition parts, but I'm stopping here for now so the owner can ride it and determine how much more he wants to put into it.

So, here are some final pics. Finally out of the garage! :woohoo:


Nate

Nates vintage bike axiom: Riding is the reward for time spent wrenching.
Murphys corollary: Wrenching is the result of time spent riding.

1979 KZ650 (Complete!)
1979 KZ650 SR (Sold!)
1979 KL250 (For sale)
1994 Bayou 400 (four wheel peel :D )
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21 May 2007 19:09 #142194 by N0NB
Replied by N0NB on topic Final pics!
Again:


Nate

Nates vintage bike axiom: Riding is the reward for time spent wrenching.
Murphys corollary: Wrenching is the result of time spent riding.

1979 KZ650 (Complete!)
1979 KZ650 SR (Sold!)
1979 KL250 (For sale)
1994 Bayou 400 (four wheel peel :D )
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21 May 2007 19:10 #142195 by N0NB
Replied by N0NB on topic Final pics!
Other side:


Nate

Nates vintage bike axiom: Riding is the reward for time spent wrenching.
Murphys corollary: Wrenching is the result of time spent riding.

1979 KZ650 (Complete!)
1979 KZ650 SR (Sold!)
1979 KL250 (For sale)
1994 Bayou 400 (four wheel peel :D )
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21 May 2007 19:10 #142196 by N0NB
Replied by N0NB on topic Final pics!
Again:


Nate

Nates vintage bike axiom: Riding is the reward for time spent wrenching.
Murphys corollary: Wrenching is the result of time spent riding.

1979 KZ650 (Complete!)
1979 KZ650 SR (Sold!)
1979 KL250 (For sale)
1994 Bayou 400 (four wheel peel :D )
Attachments:

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