Collapsed CAT or Lego bricks

Repairs, modifications, bling and tings
Post Reply
User avatar
Monty
Posts: 6671
Joined: 12 Mar 2014, 07:59
Your Bike: 2010 ZX6R
Location: Buxton
Has thanked: 2092 times
Been thanked: 2412 times

Collapsed CAT or Lego bricks

Post by Monty »

[video]https://vimeo.com/181301209[/video]

I've not ridden the bike for over 3 weeks and so far only taken the can off and had a look in the baffle box.

The bike is going into the garage on Monday for it's first chain and sprockets, I'm not doing the first front sprocket change on a Kwak. So thinking I might get them to take the headers off and knock out the CATs while it's in. Or just retrieve the Lego bricks!
Monty™© MCMLXXII
User avatar
Kwacky
Posts: 38538
Joined: 21 Oct 2013, 21:52
Your Bike: Brutale 800RR, 1000SX Ninja
Location: Brum
Has thanked: 4314 times
Been thanked: 8352 times

Re: Collapsed CAT or Lego bricks

Post by Kwacky »

No idea. It does sound like thick plastic.

How many miles have you got on the clock.
User avatar
Monty
Posts: 6671
Joined: 12 Mar 2014, 07:59
Your Bike: 2010 ZX6R
Location: Buxton
Has thanked: 2092 times
Been thanked: 2412 times

Re: Collapsed CAT or Lego bricks

Post by Monty »

About 8k now, it started a few weeks after I fitted the can
Monty™© MCMLXXII
User avatar
Kwacky
Posts: 38538
Joined: 21 Oct 2013, 21:52
Your Bike: Brutale 800RR, 1000SX Ninja
Location: Brum
Has thanked: 4314 times
Been thanked: 8352 times

Re: Collapsed CAT or Lego bricks

Post by Kwacky »

Weird. The CAT shouldn't have fallen apart so soon.
User avatar
Monty
Posts: 6671
Joined: 12 Mar 2014, 07:59
Your Bike: 2010 ZX6R
Location: Buxton
Has thanked: 2092 times
Been thanked: 2412 times

Re: Collapsed CAT or Lego bricks

Post by Monty »

I've found one example of it happening on the Internet, and strangely it happened just after he'd fitted an aftermarket can.

I hope it is the CAT, they were coming out this winter anyway and was going to fit a pinebox
Monty™© MCMLXXII
User avatar
Itchy
Posts: 2544
Joined: 12 Mar 2014, 00:17
Your Bike: Kawasaki Z1000
Location: A galaxy far, far away...
Has thanked: 756 times
Been thanked: 983 times

Re: Collapsed CAT or Lego bricks

Post by Itchy »

Do a massive wheelie down the road, hoefully the Lego will just fall out!
User avatar
Kwacky
Posts: 38538
Joined: 21 Oct 2013, 21:52
Your Bike: Brutale 800RR, 1000SX Ninja
Location: Brum
Has thanked: 4314 times
Been thanked: 8352 times

Re: Collapsed CAT or Lego bricks

Post by Kwacky »

Maybe the gasses are hotter so cause it to crumble?
User avatar
Deegee
Posts: 4206
Joined: 02 Apr 2014, 11:20
Your Bike: Daytona 675 & Tiger 900
Location: Côte d'Essex
Has thanked: 1046 times
Been thanked: 967 times

Re: Collapsed CAT or Lego bricks

Post by Deegee »

Kwacky wrote:Maybe the gasses are hotter so cause it to crumble?
Cats do get very hot, iirc the early 675's had a problem with them overheating and deforming which led to partial blockage of the exhaust and a fair bit of power loss, the engines ran weaker with an aftermarket can (less back pressure), and a weak mixture is a hotter mixture - adding to quicker cat failure.
User avatar
duke63
Posts: 15493
Joined: 22 Oct 2013, 07:34
Your Bike: Ducati 748/853 & Triumph Street Triple 765RS
Location: Staffordshire
Has thanked: 4170 times
Been thanked: 4124 times

Re: Collapsed CAT or Lego bricks

Post by duke63 »

Did you remove the exhaust valve and disconnect all the cables when you changed the exhaust?
User avatar
Monty
Posts: 6671
Joined: 12 Mar 2014, 07:59
Your Bike: 2010 ZX6R
Location: Buxton
Has thanked: 2092 times
Been thanked: 2412 times

Re: Collapsed CAT or Lego bricks

Post by Monty »

Deegee wrote:
Kwacky wrote:Maybe the gasses are hotter so cause it to crumble?
Cats do get very hot, iirc the early 675's had a problem with them overheating and deforming which led to partial blockage of the exhaust and a fair bit of power loss, the engines ran weaker with an aftermarket can (less back pressure), and a weak mixture is a hotter mixture - adding to quicker cat failure.
That's what I was thinking (hoping)
Monty™© MCMLXXII
User avatar
Monty
Posts: 6671
Joined: 12 Mar 2014, 07:59
Your Bike: 2010 ZX6R
Location: Buxton
Has thanked: 2092 times
Been thanked: 2412 times

Re: Collapsed CAT or Lego bricks

Post by Monty »

duke63 wrote:Did you remove the exhaust valve and disconnect all the cables when you changed the exhaust?
No still there and connected, it's built into the Akro. First thing I checked, took the can off and it's fine.

Dropping it off at the garage this lunch time.
Monty™© MCMLXXII
User avatar
Monty
Posts: 6671
Joined: 12 Mar 2014, 07:59
Your Bike: 2010 ZX6R
Location: Buxton
Has thanked: 2092 times
Been thanked: 2412 times

Re: Collapsed CAT or Lego bricks

Post by Monty »

Garage phoned and there's something loose and rattling around behind the CATs. They are knocking them out as we speak, can't wait to hear what it sounds like.
Monty™© MCMLXXII
User avatar
Monty
Posts: 6671
Joined: 12 Mar 2014, 07:59
Your Bike: 2010 ZX6R
Location: Buxton
Has thanked: 2092 times
Been thanked: 2412 times

Re: Collapsed CAT or Lego bricks

Post by Monty »

Sorted, the first CAT had come loose and was rattling on the second one. Sounds much better now and loads of pops and bangs

So glad I didn't try and fit those new sprockets, theres no way I could have got the front sprocket off. Their own impact driver couldn't budge it and they had to borrow one off the Snap-On rep
Monty™© MCMLXXII
User avatar
Kwacky
Posts: 38538
Joined: 21 Oct 2013, 21:52
Your Bike: Brutale 800RR, 1000SX Ninja
Location: Brum
Has thanked: 4314 times
Been thanked: 8352 times

Re: Collapsed CAT or Lego bricks

Post by Kwacky »

Kwaks are known for that tight front sprocket.

Glad it's all sorted.
User avatar
duke63
Posts: 15493
Joined: 22 Oct 2013, 07:34
Your Bike: Ducati 748/853 & Triumph Street Triple 765RS
Location: Staffordshire
Has thanked: 4170 times
Been thanked: 4124 times

Re: Collapsed CAT or Lego bricks

Post by duke63 »

I bet that spent 1 minute fishing out a lego brick and then charged Monty for a few hours labour to remove the offending CAT. :D
User avatar
D41
Posts: 12923
Joined: 22 Sep 2014, 11:36
Your Bike: Triumph Daytona 650.
Has thanked: 4283 times
Been thanked: 1129 times

Re: Collapsed CAT or Lego bricks

Post by D41 »

Monty wrote: So glad I didn't try and fit those new sprockets, theres no way I could have got the front sprocket off. Their own impact driver couldn't budge it and they had to borrow one off the Snap-On rep

You can't just use a cheater bar to take it off??

Well....not now, but you know what I mean.
Post Reply