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Exhaust 5.7 HEMI Exhaust Discussion


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  #11  
Old 11-14-2013, 09:38 AM
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Looking forward to seeing it done.
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  #12  
Old 11-14-2013, 02:02 PM
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LMAO,your neighbours are gonna love you.

Wicked pavement cleaning system you're building,lol.
Should be no problem with blowing the dust and leaves out from under the truck

The expansion chamber should help flow through the system
Are you gonna wrap the system to keep heat in till it hits the chamber?
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Old 11-14-2013, 11:51 PM
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Looks good, but I've got factory duals... not gonna drive around with empty exhaust cutouts in the bumper.
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  #14  
Old 11-15-2013, 12:10 AM
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That's why I got a non bumper exit truck. Not a fan of duals out the back. Gives me freedom to do whatever I want.

Not wrapping the exhaust. It won't stand up to our beautiful Canadian climate. And yes my slammed truck pushes snow all winter no problem... Haha
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Old 11-15-2013, 03:17 AM
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looks good nice an open..kinda like mine which I've run for the last 6 years..3" piping with an H from the headers all the way to muffler, with a 4" turn down after axle.. lookin forward to see how yours performs..
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Old 11-15-2013, 08:25 AM
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Ya exhaust wrap isn't really cut out for Canadian winters,but your expansion chamber will work better if you keep the heat in the exhaust pipes ahead of it.

Ceramic coating would be your best bet,but adds a fair bit to the cost.

I like the system,it looks good,with some thought put it into it
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Old 11-15-2013, 05:12 PM
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If you haven't started on the job yet,take a heat reading off your exhaust manifolds after a good hard run if you can.
If you're over scavenging the cylinders,the easiest way for a home based guy to see is by your manifold heat.
If the manifolds run noticably hotter after,there's a good chance she's over scavenging the cylinders with stock cam timing.
If it's pulling burning fuel into the manifolds they'll run hotter .
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Old 11-15-2013, 07:53 PM
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I think it will be fine. It's up on stands. And about to make the first cut. I know it will breathe better and sound 1000 times better. It's a truck. I'll prob never race it. Besides a couple Friday night street legals. Oh oh oh... And I just picked up a Trinity tuner so that will go in tomorrow after the exhaust is done.
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Old 11-15-2013, 08:19 PM
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Man hornet you seem to have some knowledge. Question, can you explain why the manifolds would be hotter? I would think they'd be cooler if if unburnt fuel was being pulled into the exhaust.

You caught my attention lol.

I'm interested to see how this exhaust performs. Not what I would build but it sure is interesting. Hope it works out good for you. If nothing else, it will have a hell of a deep sound lol.
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  #20  
Old 11-15-2013, 09:28 PM
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LOL,used to live on the dragstrip when i was a kid Sean.
Years of being bucks down teaches you to pay attention to what's happening with your motor.
Spent 20 years hard core street racing with a high 10 second 68 Camaro,then another 10 years running a street tired sleeper AMC Hornet that ran low 11's corrected through the mufflers on street tires.
The Hornet was a daily driver,lol.

Also raced motocross way back in the 70's,good enough or crazy enough,Honda bought me a couple bikes back then,did a stint on snowmobiles back then too.

Pretty well grew up in a racing family,my Dad raced Dirt track stock cars back in the late 50's /early 60's,so i had more support for racing then the average kid,and pretty well anything i wanted to race,my Dad supported

The fuel usually ignites when it hits the manifolds,and burns in them,causing them to run hotter
Exhaust pryometers for each cylinder are your best bet for tuning.

Last edited by Hornet; 11-15-2013 at 09:38 PM.
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