Yamaha FZS600 cam chain rattle - rebuild!

[scottyboyfzs6...]

First post so bear with me!

So the fazer was suffering from a common cam chain rattle, took it to the garage and sent away with advice to "rev it up a bit n it'll quieten down".

Be warned, what actually happened was the cam chain came off on the dual carriageway! So now im faced with a engine strip and rebuild. Today I took the panels, battery, carbs, distributor/coolant pump bracket, cam chain tensioner and cam cover off. No signs of any damage on top but the cam chain is stuck...will take the head off tomorrow and work my way down to the crankshaft to find the culprit. More to follow!

[N cee thirty]

pics please
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'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[0l0dom0l0]

Good luck.

I did the top end on mine and the thread can be detailed here:

https://www.bikechatforums.com/viewtopic.php?t=207665&highlight=fazer+oil+leak

Nice engines to work on actually, the top end was pretty easy to do without to many problems. Only real major issue was setting the timing, but neither me or my dad had done it before and we weren't going to get it wrong .

Pics, and keep us posted!
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CBT Passed: 30/08/2009, Theory Passed: 31/08/2010, Mod 1 Passed: 6/9/2010, Mod 2 Passed: 13/09/2010. Restriction ended 13/09/2012.

Bikes: 2007 Derbi GPR 50, 1998 Yamaha Fazer 600 (written off), 2002 Yamaha Fazer 600, 1994 CBR 600F, 2003 Triumph Daytona 600, Kawasaki ZX6R J1.....Current: 2006 Yamaha FZ6, 1998 Suzuki TL1000R and a Honda VFR 400 NC30.

[garth]

Mine rattles at very cold temperatures, but goes after about 1 minute. Doesn't do it when warm, I'm not overly worried.
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You ain't a has been if you never was

[scottyboyfzs6...]

Garth, this was a constant rattle from start up to revving. Got progressively worse then SNAP! I would advise anyone to trust their instincts and if it sounds bad it probably is!

Pics to follow this evening.

[Vincent]

I would post details of the garage that told you to "rev it up and it'll go away" too

[scottyboyfzs6...]

Well after stripping the head and block off I can say that it is definitely f*$ked. Piston 2 (sitting on the bike L to R) was stuck in the barrel whilst the rest turned over. Con rod has snapped taking off a chunk of the barrel wall as well guna be surfing eBay for parts i reckon... more pics to follow as i attempt a repair!

https://s1205.photobucket.com/albums/bb427/scottyboyfzs600/?action=view¤t=IMG_0145.jpg
head off

https://s1205.photobucket.com/albums/bb427/scottyboyfzs600/?action=view¤t=IMG_0155.jpg
underside of the head with damaged looking valves

https://s1205.photobucket.com/albums/bb427/scottyboyfzs600/?action=view¤t=IMG_0164.jpg
block off piston 2 missing...

https://s1205.photobucket.com/albums/bb427/scottyboyfzs600/?action=view¤t=IMG_0162.jpg
...there it is! stuck in the barrel

[N cee thirty]

o dear D:

also,the pics arn't showing

copy the img code and paste striaght in to the post
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'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[scottyboyfzs6...]

cant get the img code to work so here are the links:
https://i1205.photobucket.com/albums/bb427/scottyboyfzs600/IMG_0145.jpg
head off.

https://i1205.photobucket.com/albums/bb427/scottyboyfzs600/IMG_0155.jpg
valves

https://i1205.photobucket.com/albums/bb427/scottyboyfzs600/IMG_0164.jpg

https://i1205.photobucket.com/albums/bb427/scottyboyfzs600/IMG_0162.jpg
broken con rod

[scottyboyfzs6...]

would there be any damage to the crankshaft? can it be bent?

[mrr1]

scottyboy - how you getting on with this job?

Its stories like this that make me struggle to not worry about the squeaks, rattles and rasps my 30k fazer makes whenever I jump on it. Thing is I've now got a 1989 er250 hack that makes me realise how wonderfully smooth and modern the old fazer is.....
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TRX850, TDM900, ST1300, CB650SC Nighthawk, ragtop Saab, gym membership, messy divorce, large chested blonde fiance
Damn, I'm loving my midlife crisis.