26 replies to this topic

[JohnDoe]

Sorry for my poor English, but a friend of me was making a offer. He build a open exhaust pipe, with 50mm exhaust. Without dampers/mufflers. Direct from the exhaust manifold.

I said yes, let's try that.

Now I'm curious how that sounds, the engine is a 1300 Metro A+. I know it will not be a comfortably sound, but is it a impressive sound of racing? Or what? What is your personal opinion?

Anyone?

Edited by JohnDoe, 23 June 2009 - 08:39 PM.

[spiguy]

Sorry for my poor English, but a friend of me was making a offer. He build a open exhaust pipe, with 50mm exhaust. Without dampers/mufflers. Direct from the exhaust manifold.

I said yes, let's try that.

Now I'm curious how that sounds, the engine is a 1300 Metro A+. I know it will not be a comfortably sound, but is it a impressive sound of racing? Or what? What is your personal opinion?

Anyone?

Hi there,

You would call that a 'straight through' exhaust. I imagine it will sound extremely loud, and I'm pretty sure it would be illegal. I hope there are not alot of Police on the roads where you live!

Unless my estimation is wrong - I've never actually heard one. Funnily enough my dad drove a min van in the 60's and he had a straight through exhaust on that!

[Retro_10s]

I think it will be very loud and not good for performance.

[JohnDoe]

I live in the Netherlands, so it could be illegal. But I'll risk that. Just for the experience. .

It will be very loud indeed, but sounds it impressive, a racer, or sounds like the engine is damaged or what?

Edited by JohnDoe, 23 June 2009 - 09:08 PM.

[1987_ParkLane]

I have a straight through exhaust system on my mini, with a twin DTM, and it is very loud, almoust as loud as driving it without an exhaust .

[captainjack15]

I have a straight through exhaust system on my mini, with a twin DTM, and it is very loud, almoust as loud as driving it without an exhaust .

I also have the same and to be honest the noise isn't as bad as people say and power really isn't affected.

[1977 Loud_Mini]

In my opinion they sound great but as people say, it could be bad for performance. Take a look at this video if you want to hear what a mini with a straight through exhaust from the manifold sounds like.

[CraigyBoy]

If your going to do it, do it properly, start with the manifold and try to improve on an LCB or 3 into 1, or maybe design your own. Try using a flow analysis and do some research into shape and diameter. I know a friend of mine designed a system for a toyota engine and do a lot of reseach into the correct calculations and had the system built and worked very well.

PM me if you want more info.


Craig

Edited by CraigyBoy, 23 June 2009 - 09:27 PM.

[stardude]

so basically you want to run a giant header system. your ears are going to bleed

[Retro_10s]

Why not build an engine that sounds fast - because it can go fast? - rather than making something sound big that really isn't.

All talk and no trousers is not impressive.

[1987_ParkLane]

I also have the same and to be honest the noise isn't as bad as people say and power really isn't affected.

I suppose it depends how sensative your ears are , but then again, I havn't driven it in about 9 months so can only really remember it a little bit .

[Billy]

Why not build an engine that sounds fast - because it can go fast? - rather than making something sound big that really isn't.

All talk and no trousers is not impressive.

perfect answer
I hate all noise and no go mini's are bad enough for this with a perfomance zorst already

[rick.spi]

i will be slower than an electric wheelchair lol... u need a bit of backpressure with a 5 port/ a series engine for it to run beautifully .

when my dad had his pickup he had an lcb to a motorbike race can on intead and it wasnt any good so he swapped back to the minisport 1.

[SolarB]

... u need a bit of backpressure with a 5 port/ a series engine for it to run beautifully .

and how does back pressure increase the efficiency of an engine?

[briggss]

... u need a bit of backpressure with a 5 port/ a series engine for it to run beautifully .

and how does back pressure increase the efficiency of an engine?

I feel another heated debate...

I've run mine without an exhaust for fun for 3 days,
by the 2nd day I had ibuprofen in my car constantly...
It sounds nice and is fun but you will get sick of it and the attention.