When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Custom offset inlet outlet mufflers in front of the rear axle could add some volume, but in terms of flow area this is pretty much the largest one can go.
Personally, I think John’s designed and fabricated a really beautiful exhaust system:
Beautiful work! When the left rear tire goes through a pothole, how close does the control arm articulate to the outer pre-muffler pipe? Probably an optical illusion but it looks really close.
Beautiful work! When the left rear tire goes through a pothole, how close does the control arm articulate to the outer pre-muffler pipe? Probably an optical illusion but it looks really close.
Shouldn't be a problem. Those pictures don’t communicate the third dimension very well. It shouldn’t be any closer there than the previous 3” systems.
Yes beautiful workmanship, but seeing those big pipes surrounding that wimpy trans makes me think of this picture, as soon as the motor goes to full boost (munch)
Yes beautiful workmanship, but seeing those big pipes surrounding that wimpy trans makes me think of this picture, as soon as the motor goes to full boost (munch)
Is that the transmission staring at my two wimpy turbos? ;-)
In in all seriousness, this is a street car on street tires. To make this combo live healthy on slicks on track for an hour would mean changing a lot of things.
I wish you guys would have made some type of quick disconnect for the rear muffler. I'd love to see Dyno numbers and readings with and without it. I have a feeling that muffler is gonna cause some problems.
I wish you guys would have made some type of quick disconnect for the rear muffler. I'd love to see Dyno numbers and readings with and without it. I have a feeling that muffler is gonna cause some problems.
We have pressure sensors and an excel spreadsheet so we’ll know exactly how well the muffler works in terms of flow and power. Plus the whole rear section is replaceable with V-bands.
Why do you think the rear muffler would cause problems?
Exactly and what happens to air when it's cooled?
I hope it all works out, I just wish you had an easy option to go back and forth.
When the exhaust gas cools its density goes up, which means velocity goes down unless you are stepping down the pipe size, which means that for the same loss per foot of pipe you can use a smaller diameter pipe. The maximum pipe size is required at the point where the wastegate circuit merges and the banks are still separate. After pulses get combined between banks, the required cross-sectional area goes down and then as the exhaust gas cools it goes down further. All the high powered factory exhaust systems nowadays have huge cross sectional areas around the cats and then the pipe size is stepped down pretty dramatically towards the tail pipe muffler, before the mostly visual big tailpipe tip.
Although I think 4” at the tail pipe would be enough, I think 4.5” is good for experimentation as we can use inserts in that tail pipe to reduce the diameter and see how that impacts power and sound.
12-03-2017, 01:11 PM
Can I get some action — from the back section
