I've just finished making a 421 exhaust with aluminium bodied silencer.

There are some more pictures in my photos in the 421Exhaust folder.

I've not sound tested it yet but after a quick run it sounds a lot quieter, I just hope it come in quiet enough for a Donnington track day.

From the datalog it wants more fuel which is a good sign and it has a distinctive sound above 4k.

Thanks to Matt from Procomp for the aluminium silencer idea and the bandsaw without which I don't know how I would have managed (;-).

Cheers,

Colin

Well done, looks good.
Barry

Looks really good mate, and a valid attempt at matched lengths! Quality!

Steve

Nice work.

Where did you source the parts from ?

Canine testicles!

Nice to see one done wright.

Thanks for the comments.

Worx,
I designed the headers to be within +/- 0.5mm but due to the slight variation in bend radius and cutting variations it will be slightly more than that.

Zilspeed,
I sourced the bends and expanded joints from http://www.ojzengineering.co.uk
The perforated tube, wire wool and packing and silencer end caps from http://www.milneroffroad.com.
The rolled end from http://www.pipewerx.com
and the TIG welder courtesy of the group buy off here about a year ago.

Looks the dogs danglies, well done mate.

Fancy making me one??

Steve