Do dents in your exhaust manifold (header) rob the engine of power?

[old-git]

 

[obi_waynne]

An interesting find og. I wonder if you get more power if you bash it in the right place.

 

[old-git]

Maybe, but I am not going to experiment with my £1500 system

 

[HDi fun]

Probably. I expect if the dents were beneficial engine makers would include them in the system design.

 

[TCJBOLDIE]

That test result goes against all conventional thinking and logic IMO

 

[old-git]

I'm not so sure.

The restrictions will act as venturis in which the gases will speed up (as in a carb) thereby allowing more gas to pass through so reducing the effect of the restrictions. With the restrictions affecting only a small part of the system their effect is therefore minimised.

Well, that is my stab at an explanation.

 

[TCJBOLDIE]

Now stop wasting valuable time get back to work on the Elan

 

[old-git]

Yes Sir, as soon as I am back from the Autosport Racing Car Show tomorrow

 

[SLEEPER]

Remember it is a large v8 na engine which doesn't produce that much power per litre
If you tried this on a smaller turbo motor , say my straight 6 RB producing the same or more power but using higher revs I would suggest the dents would make quite a difference.

 

[claymore]

BMW obviously think that dents don't matter, when you peel off the outer cover on one of the down pipes on a BMW V8, this is what you find.

 

[davalav]

BMW obviously think that dents don't matter, when you peel off the outer cover on one of the down pipes on a BMW V8, this is what you find.

That's one way to restrict power output!

 

[HDi fun]

That's one way to restrict power output!

That's shameful.