Exhaust flap problems

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Mark Esposito
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Exhaust flap problems

Postby Mark Esposito » Wed Jun 16, 2021 2:25 pm

Background video

https://youtu.be/qFFuICIEZz0

Current video and call to arms !

https://youtu.be/LCiw3xcq9Oo


This appears to be a common problem, in fact I seem to remember the missenden flying doing a review of the WiFi diagnostic tool and this fault came up on his bike.

Mark

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I have a 1988 R80 RT monolever in case i forget to mention it when asking a question ! and I'm based in South Wales

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DEEP DIVER
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Re: Exhaust flap problems

Postby DEEP DIVER » Wed Jun 16, 2021 9:31 pm

Good point Mark. Any exhaust system with a pivot flap system will give trouble as it heats up and cools down. If the pivot was greased the grease would run off with the heat. It would be better to remove it completely.
I tried to be normal once, worst two minutes of my life.
Blue belt in Serious tea drinking.

Barry the old goat!!!!
1985 R80ST being rebuilt #-o
1985 R80RT Touring dream sold
2 Harley sportsters being rebuilt #-o
And a VW trike so I don't fall off :shock:

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Mark Esposito
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Re: Exhaust flap problems

Postby Mark Esposito » Wed Jun 16, 2021 9:35 pm

Unfortunately I think if the flap was removed some kind delete in the ECU may be required.

Mark

Sent from my motorola one vision using Tapatalk

I have a 1988 R80 RT monolever in case i forget to mention it when asking a question ! and I'm based in South Wales

Mjolinor
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Re: Exhaust flap problems

Postby Mjolinor » Wed Jun 16, 2021 10:13 pm

Any exhaust flap you have for whatever reason like variable vane turbo or whatever needs this:

https://www.ebay.co.uk/itm/265140480222 ... Swa9dgiShq

It will never stick or wear again.

I don't know the specifics of the guys problem but if it is related to pivots, bearing surfaces or whatever at exhaust temperatures then graphite powder will lubricate it and it will stay lubricated.

Mike D
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Re: Exhaust flap problems

Postby Mike D » Thu Jun 17, 2021 12:16 am

Unfortunately I think if the flap was removed some kind delete in the ECU may be required.
Not true. there will be fault recorded, but nothing that will prevent the bike from running.

Mike

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Mark Esposito
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Location: South Wales

Re: Exhaust flap problems

Postby Mark Esposito » Thu Jun 17, 2021 12:21 am

The guy in the video says it brings up a engine warning light, I wouldn't want to ride around with a warning light on in case another fault arose and i couldn't tell as the warning light was already on .

Mark

Sent from my motorola one vision using Tapatalk

I have a 1988 R80 RT monolever in case i forget to mention it when asking a question ! and I'm based in South Wales

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Mark Esposito
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Location: South Wales

Re: Exhaust flap problems

Postby Mark Esposito » Sat Jun 19, 2021 11:36 pm

Latest video,

https://youtu.be/4mWn_BBnexM


Can't see how a software update will cure a seized exhaust flap unless they switch off working ones in the open position before they seize.


Mark

Sent from my motorola one vision using Tapatalk


I have a 1988 R80 RT monolever in case i forget to mention it when asking a question ! and I'm based in South Wales

Jockboxer
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Re: Exhaust flap problems

Postby Jockboxer » Sun Jun 20, 2021 7:18 pm

The main problem here is that the LC 1250 flappy valve is integrated into the manifold? The 1200s were easier (and cheaper) to fix!

https://www.realoem.com/bmw/enUS/showpa ... Id=18_1505


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