Best Way to make 4 into 1 Collector

[Johnnybizzle]

Hi,

Currently trying to make a stainless steel 4 into 1 collector, does any 1 know an easy way or any pics of how they have tackled theirs,any help would be greatly appreciated

Regards JB

[AshG]

download cone layout from here http://www.pulserate.com/

make a cone template the size of the exhaust pipe one end and the size of the 4 pipes the other end.

transfer the pattern on to the sheet metal. beat it round using a mallet with something solid underneath. once its round in the shape of a cone tack it to the 4 outlets then use a bolster chisel to shape it into the dips between each pipe then finally weld on the single outlet pipe.

dont forget to weld between the 4 outlet pipes before fitting the cone or the gasses will come out the middle between the pipes.

hope this helps its very hard to explain. but quite easy to show someone. i will see if i can find a video if how to do it after dinner.

[Talonmotorsport]

Failing that you could just buy one for £78 off ebay.

[Tatey]

I've had a quick look on ebay, what about 2, 2 into 1 collectors followed by 1, 2 into 1 collector, this picture explains it much better:

http://cgi.ebay.co.uk/LOCOST-VINDICA...t _1096wt_939

Im guessing this will use AshG's method, but im not sure if it will be easier to fabricate than a 4 into 1 collector.

[dogwood]

This is how I made mine.
Using a piece of 2" tube.
I slotted it down 4 sides, about 4".
Then I spread it apart till it fitted the 4 pipes.
I then cut out 4 wedge shapes to fill the gap.
Then just fettled and welded it into place.
As Ash says though, don't forget to weld between the 4 pipes
before you fit them

[AshG]

here is another way to do it.

http://www.youtube.com/watch?v=J7oC44v4fy8