Low Hanging Exhaust

[Howard_B]

The front box on my exhaust is much to close to the road for comfort and made me take a major detour during the Club Triumph RBRR to avoid single track roads in the north of Scotland which had piles of loose gravel in between the Tyre tracks.

The height above the road of the front of the box appears to be determined entirely by the length of the exhaust manifold downpipe, so should not change. Does anyone have ideas as to what may have happened or how to cure the problem?

There is plenty of clearance between the exhaust box and body / gearbox / propshaft so it could be raised.

Thanks

Howard

[dursleyman]

Standard or sport system?

My pipe to the front box has an offset so you may be able to rotate it or swap it round the other way. Mine sits up very close to the floor and has plenty of ground clearance. Its a stainless sport system from S&S.

[Beans]

Indeed as Russ asked, what type of exhaust do you have on the car, pictures would help
The standard exhaust has a straight centre box design, whereas the sports exhausts have the offset shown in Russ' picture.
Also important to know what down-pipe and/or manifold you have on the car.

And (in my case) the centre box can have a tendency to rotate. Picture below shows amount of rotation after only a few weeks of use ...



Sorted with a stainless self tapping screw ...

[Cobber]

I knew a girl, that everyone said she had a low hanging exhaust.....turns out she only had short legs!

[Howard_B]

Its a straight box on my car - sorry am in Middle East so not easy to find a photograph. This is the best I can find for now:

[dursleyman]

Beans, I love the idea of the self tapper to stop rotation without crushing the pipe by clamping too tight. Why did I never think of that!

[Beans]

Its a straight box on my car ...

What type of manifold and/or downpipe have you fitted, tubular or standard?

Beans, I love the idea of the self tapper to stop rotation without crushing the pipe by clamping too tight. Why did I never think of that!

I have wrestled with to many overtightened/crushed exhausts in the past

[Howard_B]

Beans

As far as I know its a standard manifold which is why I am surprised that the exhaust is so low.

Cheers

Howard

[Rich K]

Sagging engine mount rubbers can cause the engine and hence exhaust to drop in relation to the car body. One of the local TR guys had a problem with the down pipe rattling against the chassis rail due to droopy mount rubbers. New engine mounts cured the problem.
Cheers,
Rich.

[Howard_B]

Rich

Thanks for the suggestion - I will get the mounts checked.

Cheers

Howard

[Beans]

Send some pictures of the exhausts when you return home to the car.
Much easier to access the problem with decent pictures

[Howard_B]

Thanks for the help. I am going to try replacing the engine mounts first, but would appreciate any suggestions as to where to get decent ones. Most modern rubber replacements fall apart much to quickly and haven't found anyone who makes a poly version.

Cheers

Howard

[busheytrader]

Is it better to buy a New Old Stock (NOS) rubber mounting or a recently manufactured one which is hopefully made to the correct spec? Hopefully the former won't fall apart from age and the latter is made correctly, won't transmit excess vibration or fall apart.

I have 3 new gearbox mounts made with granite grade rubber. NOS items were no longer available. They all transmitted unbelievable noise in to the cabin. They came from 2 of our specialist suppliers, 1 of whom said "your gearbox must be f****d since its not down to the mount". My modified Volvo mount cured the vibration completely ...........

If it were me I think I'd go down the NOS route so long as the supplier can guarantee that's what they are.

Adam

[saabfast]

I would agree. Most new 'rubber' is complete rubbish. The new strut gaiters I put on the TR7 lasted about 3 years with minimal use of the car. The Saab 9000 ones are original 1994 and still look fine.

[Howard_B]

Just made it back to Blighty for a few days leave and checked the car now the engine mounts have been replaced. Exhaust is now back in the correct position & ground clearance had been restored, so thanks for the advice.

I couldn't find any NOS mounts, so have fitted ones from Revingtons - they cost more than the usual suppliers so hopefully they will last more than 12 months.

Cheers

Howard