exhaust loss without mandrel bends
want to look at getting a 3 inch true dual over axle setup from local exhaust pro shop. how much is lost in efficiency using a regular bending machine versus mandrels? e.g. the 3 inch is "squished" to 2.75 inch on a bend? trying to compare efficiency vs cost. maybe look at a combination of using regular bends for less than 45 degrees and mandrel bends greater than 45?
Last edited by mterveen; Sep 17, 2007 at 11:16 PM. Reason: axel to axle :-)
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From: Vancouver,[KITSILANO].B.C. Canada *WestCoast*
Originally Posted by mterveen
want to look at getting a 3 inch true dual over axel setup from local exhaust pro shop. how much is lost in efficiency using a regular bending machine versus mandrels? e.g. the 3 inch is "squished" to 2.75 inch on a bend? trying to compare efficiency vs cost. maybe look at a combination of using regular bends for less than 45 degrees and mandrel bends greater than 45?
better off buying some mandrel bent exhaust piping from summit or something and then having them weld it together. You might as well just do a catback that is mandrel bent instead of running non-mandrel duals, especially if you are going FI.
your best bet is to call speedinc or another shop familar with running TD setups out the back because I know they do custom setups and they can help you get the parts you need to have one installed. They also carry universal custom kits like this http://www.ls1speed.com/cont.cfm?cid=C0000033 but it dumps at the axle.



