Cracked cylinder - use, fix, or toss?

On Wed, 07 Nov 2007 17:17:12 -0000, JayC <jwc.TakeThisOut@sysmatrix.net> wrote:

>I have a cylinder that has a cracked in a support fin in the water
>jacket. The cylinder in the picture is not mine, but I drew a fake
>crack in the fin to show the location for informational purposes.
>
>http://farm3.static.flickr.com/2092/1905695578_ff515bed9f_o.jpg
>
>What do you think? Does it matter? Is it OK to leave like that or is
>it junk? It looks like an easy weld - is that feasible?
>
>Thanks - JayC


Have it welded and you should be good to go.

Mike Baxter
 >> Stay informed about: Cracked cylinder - use, fix, or toss? 

On Nov 7, 12:17 pm, JayC <j... RemoveThis @sysmatrix.net> wrote:
> I have a cylinder that has a cracked in a support fin in the water
> jacket. The cylinder in the picture is not mine, but I drew a fake
> crack in the fin to show the location for informational purposes.
>
> http://farm3.static.flickr.com/2092/1905695578_ff515bed9f_o.jpg
>
> What do you think? Does it matter? Is it OK to leave like that or is
> it junk? It looks like an easy weld - is that feasible?
>
> Thanks - JayC


It does look like an easy weld (at least near the end), but is there a
real reason to weld it?
Does that fin brace the cylinder at all (hard to believe it does, esp.
since its on the side), or does it just support the outer jacket? Or
maybe its only purpose is to make the casting easier to do, or keeps
the coolant flow orderly?

All welds look easy at 1st...

DDave
 >> Stay informed about: Cracked cylinder - use, fix, or toss? 

On Nov 7, 9:17 am, JayC <j... DeleteThis @sysmatrix.net> wrote:
> I have a cylinder that has a cracked in a support fin in the water
> jacket. The cylinder in the picture is not mine, but I drew a fake
> crack in the fin to show the location for informational purposes.
>
> http://farm3.static.flickr.com/2092/1905695578_ff515bed9f_o.jpg
>
> What do you think? Does it matter? Is it OK to leave like that or is
> it junk? It looks like an easy weld - is that feasible?
>
> Thanks - JayC

What a bunch of 4-stroke goobers.
That's not a water jacket, that's a transfer port. It's not a support
fin, it's a seperator between the front and rear transfer passages.
Sheesh.
If you can easily get it welded, that would probably work fine, but
I'll bet you could ride that bike for years without a problem even if
you do nothing at all. Especially as little as you'll use the GG.

Tim H
 >> Stay informed about: Cracked cylinder - use, fix, or toss? 

On Nov 7, 1:46 pm, Tim H <tntharr....RemoveThis@msn.com> wrote:
> On Nov 7, 9:17 am, JayC <j....RemoveThis@sysmatrix.net> wrote:
>
> > I have a cylinder that has a cracked in a support fin in the water
> > jacket. The cylinder in the picture is not mine, but I drew a fake
> > crack in the fin to show the location for informational purposes.
>
> >http://farm3.static.flickr.com/2092/1905695578_ff515bed9f_o.jpg
>
> > What do you think? Does it matter? Is it OK to leave like that or is
> > it junk? It looks like an easy weld - is that feasible?
>
> > Thanks - JayC
>
> What a bunch of 4-stroke goobers.
> That's not a water jacket, that's a transfer port. It's not a support
> fin, it's a seperator between the front and rear transfer passages.
> Sheesh.
> If you can easily get it welded, that would probably work fine, but
> I'll bet you could ride that bike for years without a problem even if
> you do nothing at all. Especially as little as you'll use the GG.
>
> Tim H


Granted, but still, a structural reason to weld it?

I guess it could vibrate and bits could come off, but would a 2s even
notice some metal rattling around?


DDave
 >> Stay informed about: Cracked cylinder - use, fix, or toss? 

Some people have all the luck........
Still waiting for my call / e-mail from Jack.
SloCalSpode
-------------------------------------------------------------------------
JayC wrote:
> Wackily enough, 12 hours after I sent a price/availability request to
> GoFasters, I got an e-mail from Jack telling me my parts are on the
> way 2nd day air. They arrive tomorrow.
> JayC
 >> Stay informed about: Cracked cylinder - use, fix, or toss? 

is a big bore kit available?????
if not weld & machine
john
the is no avoiding war, it can only be postponed to the advantage of
your enemy

"JayC" <jwc.DeleteThis@sysmatrix.net> wrote in message
news:1194455832.609748.272410@50g2000hsm.googlegroups.com...
>I have a cylinder that has a cracked in a support fin in the water
> jacket. The cylinder in the picture is not mine, but I drew a fake
> crack in the fin to show the location for informational purposes.
>
> http://farm3.static.flickr.com/2092/1905695578_ff515bed9f_o.jpg
>
> What do you think? Does it matter? Is it OK to leave like that or is
> it junk? It looks like an easy weld - is that feasible?
>
> Thanks - JayC
>
>



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 >> Stay informed about: Cracked cylinder - use, fix, or toss? 

> Have it welded and you should be good to go.

That's what I was thinking.

JayC
 >> Stay informed about: Cracked cylinder - use, fix, or toss? 

> If I ever had any desire to buy a used 125 MX bike, you've scared me off.

Displacement has nothing to do with it.

JayC
 >> Stay informed about: Cracked cylinder - use, fix, or toss? 

> What a bunch of 4-stroke goobers.
> That's not a water jacket, that's a transfer port. It's not a support
> fin, it's a seperator between the front and rear transfer passages.
> Sheesh.

Oh yea, it IS a transfer port. At any rate, it's a hole in the side
of the jug - you say tomAto, I say tomAHto.

> If you can easily get it welded, that would probably work fine, but
> I'll bet you could ride that bike for years without a problem even if
> you do nothing at all. Especially as little as you'll use the GG.

I guessed it wouldn't matter either way, but I figured I'd run it past
a few of you stinkwheels dorks first, just in case. All it has to do
is run. Once.

JayC
 >> Stay informed about: Cracked cylinder - use, fix, or toss? 

On Wed, 07 Nov 2007 19:16:22 -0000, JayC <jwc.TakeThisOut@sysmatrix.net> wrote:

>> What a bunch of 4-stroke goobers.
>> That's not a water jacket, that's a transfer port. It's not a support
>> fin, it's a seperator between the front and rear transfer passages.
>> Sheesh.
>
>Oh yea, it IS a transfer port. At any rate, it's a hole in the side
>of the jug - you say tomAto, I say tomAHto.
>
>> If you can easily get it welded, that would probably work fine, but
>> I'll bet you could ride that bike for years without a problem even if
>> you do nothing at all. Especially as little as you'll use the GG.
>
>I guessed it wouldn't matter either way, but I figured I'd run it past
>a few of you stinkwheels dorks first, just in case. All it has to do
>is run. Once.
>
>JayC

All it has to do is run well because as you figured out, a poorly
running 125 2 stroke sucks 'hind tit. I figure that once you get it
finally working, that you will have a love/hate relatoionship with
your Spanish Dancing Girl.

Did you order your parts elsewhere yet and if so, how long for the
parts to arrive?

Mike Baxter
 >> Stay informed about: Cracked cylinder - use, fix, or toss? 

> Did you order your parts elsewhere yet and if so, how long for the
> parts to arrive?

Wackily enough, 12 hours after I sent a price/availability request to
GoFasters, I got an e-mail from Jack telling me my parts are on the
way 2nd day air. They arrive tomorrow.

That will allow me to put the top end back together, and assumes that
I re-use the repaired primary drive gear. Good enough to sell, but
not good enough to keep for any length of time.

If I want to actually keep it, I'd have to do the bottom end too - the
crank itself still seems OK, but the crank bearings are getting sloppy
and should be changed. OTOH, I'm all of two bearings, a gear, and a
gasket away from something I could actually use.

Maybe I'll crack the cases then decide, but as for now, my plan is to
haul the thing off to a consignment shop and upgrade to Jap once and
for all.

I'm looking into a couple of CRs at the moment - should be seeing an
'03 CR125 this week if I get the time.

JayC
 >> Stay informed about: Cracked cylinder - use, fix, or toss? 

On Wed, 07 Nov 2007 20:51:43 -0000, JayC <jwc RemoveThis @sysmatrix.net> wrote:

>> Did you order your parts elsewhere yet and if so, how long for the
>> parts to arrive?
>
>Wackily enough, 12 hours after I sent a price/availability request to
>GoFasters, I got an e-mail from Jack telling me my parts are on the
>way 2nd day air. They arrive tomorrow.
>

Interesting.

>That will allow me to put the top end back together, and assumes that
>I re-use the repaired primary drive gear. Good enough to sell, but
>not good enough to keep for any length of time.

Is the part on order?

>If I want to actually keep it, I'd have to do the bottom end too - the
>crank itself still seems OK, but the crank bearings are getting sloppy
>and should be changed. OTOH, I'm all of two bearings, a gear, and a
>gasket away from something I could actually use.

Well, if I buy a used 125, I would more than likely dut in a new crank
and top end. Just do it. You know you like the way handles and you
have 2 bikes you can ride until you get the parts and the bike back
together.

>
>Maybe I'll crack the cases then decide, but as for now, my plan is to
>haul the thing off to a consignment shop and upgrade to Jap once and
>for all.
>
>I'm looking into a couple of CRs at the moment - should be seeing an
>'03 CR125 this week if I get the time.
>
>JayC


The newer CR125s are weak and slow. Make sure you get a 125 with a 6
speed if you go that route.

Mike Baxter
 >> Stay informed about: Cracked cylinder - use, fix, or toss? 

On Nov 7, 1:05 pm, Mike Baxter <mgb... DeleteThis @comcast.net> wrote:
> On Wed, 07 Nov 2007 20:51:43 -0000, JayC <j... DeleteThis @sysmatrix.net> wrote:
> >> Did you order your parts elsewhere yet and if so, how long for the
> >> parts to arrive?
>
> >Wackily enough, 12 hours after I sent a price/availability request to
> >GoFasters, I got an e-mail from Jack telling me my parts are on the
> >way 2nd day air. They arrive tomorrow.
>
> Interesting.

Yes, it is. And if you had called GoFasters instead of e-mailing them,
you would have known the price/availability when Jack called. You then
could have addressed the issue of having to pay for 2nd day air
shipping on parts that were ordered a month ago.

Tami-
 >> Stay informed about: Cracked cylinder - use, fix, or toss?