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[johnnyboy]

As it says in the title, I need a new exhaust for a CJ7 304 v8 - and I would appreciate suggestions.

The engine is stock, and I am not in search of more power...

I am however in search of "reasonably priced" and fairly quiet (provided it sounds like a V8 ).

I am also old enough to want the pipes to run inside the chassis rails and out at the back.

According to the internet, the standard cast iron headers are OK unless I start doing engine mods, which as I say I am not (currently...) planning. - is the internet right?

Presumably a dual pipe system front to back?

Any recommendations as to pipe diameter, muffler makes and models, stainless vs not? etc. etc.

And above all, a recommendation on somebody to make it?   

[5536paulj]

Nothing wrong with the standard cast manifolds,apparently they flow well, if you want duals you'll have to make it yourself or have it fabbed up. Agree on keeping the exhaust with in the frame rails, as side pipes are loud, however well you silence them.

Doesn't need to be big bore, 2 1/4 or 2 1/2 is quite big enough, the silencer (s) will dictate how it sounds, plenty of options there.

[JamesH]

3" pipe and cherry bombs 

Or, in the world of wanting some hearing left and not setting off car alarms - 2.25" to 2.5" pipe and cheap silencer box unless you want some nice sounding Flowmaster or even Borla boxes.

The headers, large pipe, no cat and cherry bomb did sound sweet on my 4.0 though so you might want to indulge your inner hooligan with how awesome it will sound on a V8. 

[Bulldog67]

Upgrade to hei if you want cheap n easy power increase

[Dave69]

cheery bomb 3" overall od and 24" in length as a minimum or pair up two smaller cherry bombs per side should decrease the noise level a bit

[wildwood]

Using an H pipe or letting them meet in an X after the trans case apparently is good for scavenging and gives an exhaust note that is pleasing......

After that back to two pipes and mufflers of your choice

[isle of man]

Just pipe and MOFOing exit !!!

[STUARTF]

Maybe a little toooo far to travel for you.
Silver Systems, Leek Staffordshire. They fabricate all my cars exhausts, stainless is the way to go.
And for sounds well they can make it as loud or quiet as you want

[Bubba]

there is one in walsall with a very good reputation John something possibly when running possibly take it there ?

[STUARTF]

Or even loan a trailer and drop off. It would only be a half a day job

[johnnyboy]

Silver Systems, Leek Staffordshire. They fabricate all my cars exhausts, stainless is the way to go.
And for sounds well they can make it as loud or quiet as you want

Thanks for thiis. What sort of money do they talk about

[johnnyboy]

there is one in walsall with a very good reputation John something possibly when running possibly take it there ?

I was feeling sorry for your neighbours

Also wondering about pipe diameters.

A V8 304 is low revving (by todays standards...) and half of one is only two and a half litres... - do I really need a 2.5 inch pipe for the equivalent of a low revving 2.5 litre 4 cylinder engine?

(I am fretting about clearance past the Quadradrac/TH400 box)

[5536paulj]

2 1/4 or even 2"will be plenty, and give you clearance past the qtrac

[LairdScooby]

If you're anywhere near East Anglia, Demand Engineering in Ipswich are pretty good and will tailor the sound and look to your ear drums, wallet and neighbour-scaring activities

http://demandengineering.co.uk/

A friend had a stainless system (including manifold) made for his 98 Rover 820 (different car i know but gives you a ball-park figure) for £380 i think he said. The workmanship is excellent, it looks and sounds great, a bit sporty without being intrusive at speed or even when he hoofs it and even his neighbours don't complain!