The difference between Early and Late Exhaust Systems, a Visual Guide, Or, what kind of Exhaust do I have |
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The difference between Early and Late Exhaust Systems, a Visual Guide, Or, what kind of Exhaust do I have |
newto914s |
Jul 1 2007, 09:48 PM
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#1
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Senior Member Group: Members Posts: 561 Joined: 16-February 04 From: Thornton, CO Member No.: 1,663 |
This is my first attempt at actually contributing to this site (IMG:style_emoticons/default/smile.gif)
A brief write up on the difference between early(70-74) and late(75-76) style exhaust systems, with many pictures for you visual learners. We'll start the Heater Box Arranged top to bottom. e1.7 e2.0 L2.0 all passenger sides Note the separate collector for the later style. Also note the bend in the 1.7 differentiating it from the e2.0 |
jcd914 |
Feb 17 2018, 12:02 AM
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#2
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Advanced Member Group: Members Posts: 2,081 Joined: 7-February 08 From: Sacramento, CA Member No.: 8,684 Region Association: Northern California |
Most of it is the header pipes and single pipe heat exchangers. They are not designed for flow, just a way to route exhaust from 2 cylinders in to one pipe in the heat exchanger.
I have installed aftermarket mufflers (bursh) on 75/76 cars and it makes very little difference. Backdating to a 73/74 style 2.0 exhaust does make a difference. Jim |
gothspeed |
Feb 17 2018, 11:39 PM
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#3
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Senior Member Group: Members Posts: 1,539 Joined: 3-February 09 From: SoCal Member No.: 10,019 Region Association: None |
Most of it is the header pipes and single pipe heat exchangers. They are not designed for flow, just a way to route exhaust from 2 cylinders in to one pipe in the heat exchanger. I have installed aftermarket mufflers (bursh) on 75/76 cars and it makes very little difference. Backdating to a 73/74 style 2.0 exhaust does make a difference. Jim That makes sense, thank you for the comparison information (IMG:style_emoticons/default/smile.gif) |
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