Engine stuff - VIC [ZZR250]

Hi folks,

I recently picked up a ZZR250 in need of some real TLC.
Apparently the bike stopped running so after a trip to the mechanics for an
assessment they put it down to bottom end bearings and oil seals.. So anyway
the guy decides he can do this himself, drops the motor out of the frame and
(basically everything else too!) and then abandons project.. this is where I
come in.

I've fixed up most of the other stuff on the bike that was requiring
attention now its just the motor..

The cylinder head is off and I'm weighing up

a) giving it to a mechanic to finish the job
b) getting an exchange motor
c) stumbling along and finishing it myself

I'm fairly apt mechanically but have never had a motor pulled down that far
so I'm a little hesitant... plus I have noticed that there is some Silastic
gunk on the bottom end obviously covering up some kind of damage on the
crankcasing.. so it makes me think another motor might be the go rather than
rebuilding this one?

Victorian motorcycle wreckers priced me $850 for an 'exchange motor' This
seems a little steep and I'm not too if sure this means 'reconditioned' or
just 'exchange' i.e. - fresh out of a wreck. Are these guys reputable?

If anyone can point me to a decent bike shop out in northern suburbs that I
can have a yarn to that'd be appreciated.

Cheers..

Adam.

 

go for a complete engine IMHO

its a bike out of a crashed bike with XX amount of kays

prob about the going rate , but keeping an eye out you could find a complete
bike crashed
somewhere like ebay
or auctions , a stat writeoff i.e cannot be registered again would be the
way to go
as you would pick up the bike cheap because it cannot be registered again ,
but you can use engine in
your bike and prob have plenty of spares left which BT would do all sorts of
things for you to get a hold of

other options www.findapart.com.au

 

The cylinder head is off and I'm weighing up

Id go with #b thanks, easiest, and quickest.

no idea what might be missing and fucked with the rest of the motor

or if you have lots of coin, get a quote from a bike shop

 

how much did you pay for this bike ?

if it didn't cost you anything.. then
repair it yourself... as you have
nothing to lose. if it's one problem
(which i doubt) then you know what to
look for and fix. unfortunately, splitting
a motor is a world of pain even with a
service manual that tells you how to
do it and what tools you need.

if you have assessed that it's unviable,
or you don't have the tools to do the job,
then sell it to a wrecker and buy a
goer.

spending out on new bike motors isn't
really an option for anyone IMHO
(unless you want to do it as a learning
exercise).

my 2 bob.

-f

 

What what what?! ;-)

But yes, I agree with the "get a complete motor from a wrecker", and
~$800 or so is about the going rate. Up here in Canberra that would
be an outright sale though, not an exchange.

Canberra is pretty far North. ;-)

Seriously, ACT Motorcycle Wreckers has a couple of good GPX/ZZR
motors, and they'll ship stuff anywhere. (02) 6297 7075

If you mention BT the GPX250 guy they'll have a good laugh for a
while, but then you'll have some common ground to work from. ;-)


BTH

 

Let me know if you want a service manual, I can give you a *free* PDF
copy of the GPX250 one (same motor).


BTH

 

Hehe thanks mate but i have got the GPX kawasaki workshop manual and ZZR
supplement.

Its great for just explosion diagrams and things like that but also lacks a
lot for a non qualified mechanic like myself.. it doesn't really tell you
how to fix things.. just how to take them apart etc.

I have looked for an aftermarket manual that has a little more depth to it
but suprisingly nothing.. (not zzr, gpx or ex)

Adam.

 

Yeah.. seems im getting a good few votes for B (swap motors). i have a
fairly good range of tools but yeah i know where you are coming from, each
page i turn it wants another tool!, tools for extraction and tools for
measuring etc..
I almost reckon it would work out the same price swapping it or repairing it
because of all the tools id need to purchase!

Thanks for your input.

Adam.

 

Buy the new motor and you can then pull the old one apart purely as a learning
exercise without having to worry about stuffing it up.

At the very least if you can't rebuild it, you can coat the parts in good nick with oil
and seal them in plastic bags for spares.

 

In aus.motorcycles on Fri, 21 May 2004 07:58:56 +1000

you won't find a GPX for non mechs specific manual.

Intead, you have to buy books that teach general motor and bike work,
then use the manuals for specifics.

I believe Haynes have a couple of beginner guides to general stuff.

Zebee

 

We just paid about the same from those guys, you get a 30 day or 1000 Km
warranty if fitted by a registered mechanic, the changeover motor goes
better than the old one did (even before the Mrs. blew it up, trying to keep
up with an 1100 Blackbird).