Original slabby exhaust question

[Boogieman]

Hi,

I have an 1127 in a slabby and was giving it a tidy up recently. Upon finishing and giving it a run, I noticed the exhausts leaked at the head slightly.  It was leaking badly prior to this so I fitted new gaskets. 

I looked at the online parts catalogue and noticed I'm missing the exhaust plates (Item 5 in this figure)

I ordered them and they look like a restrictor -

 

because of this I'm not keen to fit them but may need to add something else to take up the space to get it to seal  

does anyone know why these are fitted?

 

cheers

 

[Captain Chaos]

if those plates are thin (1 or 1,5mm) you can leave them out. 

They look like restricors to me, but according to the part diagram from 1986 they are for all markets, usually only a few markets get a restricted version. 

Edited February 1, 2016 by captain chaos

[Captain Chaos]

had a closer look, for model year 1987 and 1988 the plates are only mounted in E2, E17 and E39 markets. Which is England, Sweden and Austria.

 

Edited February 1, 2016 by captain chaos

[Rene EFE]

If it keeps leaking at the head when seemingly, there's nothing wrong, just use dual gaskets. A bodge, but it works and you can't see it.

[Captain Chaos]

is the sump pan from a 1127 engine? Might cause the exhaust to sit slightly lower / at an angle.

[Boogieman]

Thanks for the replies. 

Theyre only about 1mm thick so I also think they shouldn't make a difference. I had considered a second row of gaskets but genuine  are $40 per set set and I thought I was doing the right thing buying the bits on the parts list. 

Its odd that they are stocked in Oz and they're on the Oz parts list if they are only for those 3 countries. 

 

I might remove it and see if it's crushing the gaskets and reassess then.

thanks for the input  

 

[Ben Slabby]

What Rene said. Mine is fitted with two sets, had the same issue but it's down to someone ballsing the threads on the exhaust ports up. Works fine.  

[cregnybaa]

9 hours ago, Boogieman said:

Hi,

I have an 1127 in a slabby and was giving it a tidy up recently. Upon finishing and giving it a run, I noticed the exhausts leaked at the head slightly.  It was leaking badly prior to this so I fitted new gaskets. 

I looked at the online parts catalogue and noticed I'm missing the exhaust plates (Item 5 in this figure)

I ordered them and they look like a restrictor -

 

because of this I'm not keen to fit them but may need to add something else to take up the space to get it to seal  

does anyone know why these are fitted?

 

cheers

 

Those are deffo restrictor washers was always taking them out on bikes that came in for first service.

[Boogieman]

Excellent to know. I knew there was no way it would help it but knowing they are restrictors has sealed the deal. 

My threads etc are great so I'll give it a nip up and if still leaky I'll try a spacer behind the gasket or a second gasket. 

Cheers for the input guys.