The perfect exhaust

[MattGWilson]

I've decided to put my engineering skills to good use and design the perfect exhaust for our cars. My current exhaust sounds great and produces some extra HP, but it's not a tuned exhaust and was built by a company who (like others) put pipes together until the exhaust is made.

I intend on designing an exhaust that is tuned to either 3600 rpm or 6500 rpm, that I can decide upon at a later date depending on which is more feasable (fits best). But the prior increasing power around the gear change and the later increasing power nearing the peak rpm.

I need to know the stroke and rod length to calculate diameter and length of the exhaust.

But before I do any of the designing, does anybody know of a company who's produced exhausts for our cars based on knowledge rather than experience?

Matt

 

[Alpineandy]

Would this assist ;LINK

IIRC there's quite a bit of info on the interweb, but it takes some searching (don't search for a 'long pipe' or it could take even longer!!!!)

 

[MattGWilson]

Yes, that's great, I was going to do the calculations manually but that should cut things down a little!

I just need the details specific to our engine now

 

[Brett]

Orbisoud produced the trophy exhaust system and manifold sets for Renault. I'd hazard a guess in saying that they must have been designed and tested to be as near perfect as possible for a tansverse V configured engine.

 

[Adrian]

Just visited Orbisoud yesterday and these guys are amazing artists with exhaust [cmilie=iconcheers.gif]


Interesting project Matt! Keep us updated!

 

[MattGWilson]

I've done a few calculations on modifications that should improve my current exhaust. I'll do the work and check the results, if everything goes wrong I think I'll leave it to those with experience

*EDIT: And if things work out, I'll design a system from scratch.

 

[Spanner]

I want a better sound on my V6 (not loud and boomy)
Any updates ?
Where are Orbisound based ? And do u have a phone number ?

Cheers in advance

 

[Matt]

I want a better sound on my V6 (not loud and boomy)
Any updates ?
Where are Orbisound based ? And do u have a phone number ?

Cheers in advance

Based in meriel near Paris. I've added email on your other thread.

Cheers.

 

[MattGWilson]

I'm getting my car down to Prospeed in three weeks, they will make the adjustments I've calculated and I hope it will work!

I'll let you know how it goes.

 

[Spanner]

Thank you and please keep me informed

Nigel

 

[Ali]

James has a prospeed doesn't he?

 

[Spike]

I've done a few calculations on modifications that should improve my current exhaust. I'll do the work and check the results, if everything goes wrong I think I'll leave it to those with experience

*EDIT: And if things work out, I'll design a system from scratch.

I am very interested in the results that you get even if, "it all goes wrong", remember that failures lead to success and power is knowledge, or the other way round. i have done hundreds of hours dyno work and most of it was failures, had it all been a success i would have been done in an hour, keep up the good work and keep us posted.

 

[Brett]

What did yours end up knocking out over std then Spike?

 

[Spike]

What did yours end up knocking out over std then Spike?

About 8 bhp, very dissapointing, but a move in the right direction.

 

[Brett]

That's not too bloody bad if that's over Janspeeds original setup! Fair play I say.