UK Exhaust mods on RB's car
08-05-2013, 06:41 PM
#1
UK Exhaust mods on RB's car
So, I thot I would try the UK exhaust mod on my AP1.
Bought a used exhaust, in excellent condition BTW.
Picked up some 38mm 316L SS pipe with 90 deg bends.
Spent the better part of an afternoon and evening prepping for TIG welding.
See attached photos:
[attachment=43678:S2K Exhaust Connectors.jpg]
[attachment=43681:S2K Connector 1 fitted.jpg]
[attachment=43682:S2K Holes cut 1.jpg]
Will be TIG welding tomorrow.
More pics to come.
Bought a used exhaust, in excellent condition BTW.
Picked up some 38mm 316L SS pipe with 90 deg bends.
Spent the better part of an afternoon and evening prepping for TIG welding.
See attached photos:
[attachment=43678:S2K Exhaust Connectors.jpg]
[attachment=43681:S2K Connector 1 fitted.jpg]
[attachment=43682:S2K Holes cut 1.jpg]
Will be TIG welding tomorrow.
More pics to come.
08-06-2013, 09:12 AM
#3
I like the gradual radius of the merge pipe and the quality of your work. One question: are you going to enlarge the muffler's loop entry hole to 38mm, as it seems much smaller in the last picture?
Let us know the results, I am thinking about this but not sure of the 38mm merge pipe sound with the test pipe.
Let us know the results, I am thinking about this but not sure of the 38mm merge pipe sound with the test pipe.
08-06-2013, 10:13 AM
#4
I like the gradual radius of the merge pipe and the quality of your work. One question: are you going to enlarge the muffler's loop entry hole to 38mm, as it seems much smaller in the last picture?
Let us know the results, I am thinking about this but not sure of the 38mm merge pipe sound with the test pipe.
Let us know the results, I am thinking about this but not sure of the 38mm merge pipe sound with the test pipe.
This is larger than the 22-23mm which King Motorsports uses.
The 38mm SS pipe is 35mm inside, so there will be a lip of about 3mm inside.
At low rpm, i.e. driving around town and cruising on the highway, there should be little difference over the stock system, as the exhaust gas would prefer to follow the path of least resistance, which is thru the muffler.
However, at higher rpms, the delta P thru the muffler will be higher than the by-pass, so more of the flow will travel directly to atmosphere.
Without doing a CFD, it's a bit trial and error, so on this exhaust I thot I would be a big more conservative.
If I like this, I will modify my existing system and see how it works with a bigger opening.
Likely, there will be one of the systems for sale soon.
Cheers,
RB
08-07-2013, 05:04 AM
#5
Welded.
If you do this yourself, be sure to purge the exhaust with Argon and keep it flowing, prior to TIG welding and during.
The welds will be stronger and will not crack later when everything gets hot.
[attachment=43774:S2K Exhaust TIG weld 1.JPG]
[attachment=43775:S2K Exhaust TIG weld 2.JPG]
If you do this yourself, be sure to purge the exhaust with Argon and keep it flowing, prior to TIG welding and during.
The welds will be stronger and will not crack later when everything gets hot.
[attachment=43774:S2K Exhaust TIG weld 1.JPG]
[attachment=43775:S2K Exhaust TIG weld 2.JPG]
I want to hear this in person, Ill get my gopro to record it
Trending Topics
08-07-2013, 05:43 PM
#10
