chaz771 Posted October 22, 2016 Report Share Posted October 22, 2016 How to understand your exhaust? well cut it open! As you can see it is split into five chambers each with its own function. In the central chamber the gas's from both banks meet and diffuse and pressurise this section, ether side of this they diffuse into the secondary chambers and gas is run to the opposing side and into the final exit chamber. Link to comment Share on other sites More sharing options...
chaz771 Posted October 22, 2016 Author Report Share Posted October 22, 2016 this shows the exit's from the secondary chambers, and the exit pipe from the end chambers is below the inlet pipe. Link to comment Share on other sites More sharing options...
chaz771 Posted October 22, 2016 Author Report Share Posted October 22, 2016 close up of the center chamber and the "corn on the cob" diffuser pipes, each pipe is caped so the gas must vent via the slotting in the tube wall. Link to comment Share on other sites More sharing options...
Jason986S Posted October 22, 2016 Report Share Posted October 22, 2016 Massively over engineering if you ask me, good old porker! Link to comment Share on other sites More sharing options...
mike597 Posted October 22, 2016 Report Share Posted October 22, 2016 So which bit does gert remove? Link to comment Share on other sites More sharing options...
lordlee Posted October 22, 2016 Report Share Posted October 22, 2016 Not sure what Gert does but this is what I have planned for the 987 exhaust Open up the original exhaust, remove cats and make it louder by enlarging the pipe and putting the exit closer to the flared tube. (pinched wholesale as an idea from Chris @ Fabspeed) Link to comment Share on other sites More sharing options...
chaz771 Posted October 22, 2016 Author Report Share Posted October 22, 2016 7 hours ago, Jason986S said: Massively over engineering if you ask me, good old porker! Agreed! this kind of system would give a fair bit of back pressure plus if you add the pipe lengths, the gas must have to travel maybe another 2m or more before being able to exit! Link to comment Share on other sites More sharing options...
Jason986S Posted October 23, 2016 Report Share Posted October 23, 2016 15 hours ago, chaz771 said: Agreed! this kind of system would give a fair bit of back pressure plus if you add the pipe lengths, the gas must have to travel maybe another 2m or more before being able to exit! So glad I've got an aftermarket back is. But also very tempted to do a back box delete. Link to comment Share on other sites More sharing options...
Guvs Posted October 23, 2016 Report Share Posted October 23, 2016 On 22/10/2016 at 10:23 AM, mike597 said: So which bit does gert remove? Not sure if he removes anything, I was under the impression/lead to believe that he just re-directs the flow of gases somewhere within the back box. Guvs. Link to comment Share on other sites More sharing options...
edc Posted October 23, 2016 Report Share Posted October 23, 2016 In this pic of my Carnewal you can see externally what has been cut and it gives and idea as to what is done. The pic Chaz has done has been shown before on some of the U.S. forums. The U.S. exhaust looks pretty identical. I suspect Gert does away with the pipes that loop back trough the chambers so that the gas flows through more freely with less obstruction. The area cut on my exhaust suggests that's a viable option. Link to comment Share on other sites More sharing options...
chaz771 Posted October 23, 2016 Author Report Share Posted October 23, 2016 8 hours ago, Jason986S said: So glad I've got an aftermarket back is. But also very tempted to do a back box delete. Funny you speak of a delete, I was going to Frankenstein the old box by making use of just the in and out pipes and weld in two old gas bottles to act as cherry bombs, I'll let all know how my hideous creation gets on. Link to comment Share on other sites More sharing options...
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