Flappy nightmare

[tweedy453]

Hi there peeps useual problem flappy exhaust valve has stuck open no problem check the threads on it replace with 63.5mm od X 1.5mm wall 70mm long purchase said pipe DOH won't fit !!! I don't have any verniers to measure the id of the cat outlet end can inlet so dose anybody know the actual size pipe required ? Thanks in anticipation

 

[Delboy777]

Hi there peeps useual problem flappy exhaust valve has stuck open no problem check the threads on it replace with 63.5mm od X 1.5mm wall 70mm long purchase said pipe DOH won't fit !!! I don't have any verniers to measure the id of the cat outlet end can inlet so dose anybody know the actual size pipe required ? Thanks in anticipation

That is the correct size. Open up the splits very carefully and using a lump of 4x2 hammer it into the exhaust. Mine was tight as a nuns cnut, but it fitted. Oh and BTW, file a chamfer on the pipe before you hammer it in.

 

[tweedy453]

That is the correct size. Open up the splits very carefully and using a lump of 4x2 hammer it into the exhaust. Mine was tight as a nuns cnut, but it fitted. Oh and BTW, file a chamfer on the pipe before you hammer it in.

Cheers for that I will give it another go but things generally go tits up when I get the big hammer out ! Lol
Is the 63.5mm od taken from a nippy Norman's insert ? When I looked at my exhaust my ss insert it looked like they were both the same od which like you say would make for an extremely tight nuns .....

 

[Speedy1959]

Well I dont think the nun lives in Blackpool !!!

 

[tweedy453]

Well I dont think the nun lives in Blackpool !!!

I don't think Blackpool has seen any nuns or virgins for that matter for a very long time from what I remember last I visited !!!!

 

[NZRalphy]

Put a smear of copperslip grease to both the tube and the exhaust. Mine was v tight fit. Open the clamp and slots up a little

 

[Bungy]

Worth doing all of the above especially the chamfer and also run some emmery cloth around the pipe end to help ease it in.

 

[comberjohn]

Get a tube of exhaust ASSEMBLY paste. Holts do one.
It lubes the joints when assembling and then seals when the exhaust gets hot.
Easy to break apart again when necessary.

 

[Bendy toy]

The spacer tube will need the inside edges filing to remove burrs and any sharp edge. There might also be a welding ridge on the inside that will need to be filed away.

Bashing the spacer tube onto the headers could well cause damage and stainless can gall (self weld) making it almost impossible to move (on or off). The best option would be to have the new pipe slightly swaged to give a good fit without being too tight.

Xtreme Stainless (near Stafford) use silicone sealer on pipe joints. It lubricates the fitting and causes no problems even on very high heat areas.

Stafford is not much help for a the York area. Google found these. Give them a call. http://www.cskfabrication.co.uk/contact/4589654394

 

[comberjohn]

Be careful on choosing which silicone sealer you use, if you do go that way. Some have a temperature limit well below the exhaust temperature. Obviously Bendy's exhaust friends are using a high temperature one, make sure you do, too.

Or, you can just go to Halfords and buy a tube of Holts Firegum...eyesj

 

[tweedy453]

The spacer tube will need the inside edges filing to remove burrs and any sharp edge. There might also be a welding ridge on the inside that will need to be filed away.

Bashing the spacer tube onto the headers could well cause damage and stainless can gall (self weld) making it almost impossible to move (on or off). The best option would be to have the new pipe slightly swaged to give a good fit without being too tight.

Xtreme Stainless (near Stafford) use silicone sealer on pipe joints. It lubricates the fitting and causes no problems even on very high heat areas.

Stafford is not much help for a the York area. Google found these. Give them a call. http://www.cskfabrication.co.uk/contact/4589654394

Thanks for the time and effort for finding the link to the spot in pocklington just down the road many thanks

 

[tweedy453]

Thanks to everyone who's given there advice and suggestions TOP BLOKES !

As the title cheers

 

[Bendy toy]

Be careful on choosing which silicone sealer you use, if you do go that way. Some have a temperature limit well below the exhaust temperature. Obviously Bendy's exhaust friends are using a high temperature one, make sure you do, too.

Or, you can just go to Halfords and buy a tube of Holts Firegum...eyesj

Few silicones will go over 250C so I was very surprised any would do the job, but my silencer link pipes were all good. I used Akraprovic proprietary anti seize paste on the Ti exhaust system and its now a one piece system. Quite possibly the silicone would have helped keep it separable.

 

[DC]

elbow grease sorts this out

 

[Gordon T]

A nickel based high temp anti-seize grease is the one to go for. It doesnt react with the stainless steel and therefore doesnt gall.

 

[Bendy toy]

Who knows what works best on titanium but TBH it hardly matters for my bike. The pipes fit, can be removed as needed and I wont be selling them any time soon.

 

[tweedy453]

A nickel based high temp anti-seize grease is the one to go for. It doesnt react with the stainless steel and therefore doesnt gall.

I was told that ceramic exhaust paste was the best to use as its melting point is 1500 o C contains no metal ingredients so won't react ! Got a tube from putoline for 7 quid also good for brake parts etc

 

[Bendy toy]

The exhaust paste sets solid so fine for when you don't want to take it apart ever again.

 

[tweedy453]

The exhaust paste sets solid so fine for when you don't want to take it apart ever again.