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 |
newto914s |
Jul 1 2007, 09:56 PM
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#2
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Senior Member Group: Members Posts: 561 Joined: 16-February 04 From: Thornton, CO Member No.: 1,663 |
Now to show the ID of the tubing, Keep in mind these are all used and are not perfectly true(margin of error), but you can still see a notable difference between the Stainless steel early style and the later ID
e1.7 e2.0 L2.0 Muffler mount flanges. e1.7 e2.0 L2.0 |
newto914s |
Jul 1 2007, 09:59 PM
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#3
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Senior Member Group: Members Posts: 561 Joined: 16-February 04 From: Thornton, CO Member No.: 1,663 |
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newto914s |
Jul 1 2007, 10:03 PM
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#4
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Senior Member Group: Members Posts: 561 Joined: 16-February 04 From: Thornton, CO Member No.: 1,663 |
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newto914s |
Jul 1 2007, 10:08 PM
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#5
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Senior Member Group: Members Posts: 561 Joined: 16-February 04 From: Thornton, CO Member No.: 1,663 |
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newto914s |
Jul 1 2007, 10:15 PM
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#6
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Senior Member Group: Members Posts: 561 Joined: 16-February 04 From: Thornton, CO Member No.: 1,663 |
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newto914s |
Jul 1 2007, 10:16 PM
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#7
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Senior Member Group: Members Posts: 561 Joined: 16-February 04 From: Thornton, CO Member No.: 1,663 |
And lastly the late Stock muffler with Cat in place and O2 sensor of some kind.
Attached thumbnail(s) |
newto914s |
Jul 1 2007, 10:22 PM
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#8
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Senior Member Group: Members Posts: 561 Joined: 16-February 04 From: Thornton, CO Member No.: 1,663 |
Well, that's all I've got. I hope that will help someone someday. If you've got a picture of the OME e1.7 and/or e2.0 Banana muffler post it.
Thanks Samson |
McMark |
Jul 1 2007, 11:16 PM
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#9
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Very cool! Thanks for taking the time! (IMG:style_emoticons/default/smiley_notworthy.gif)
I think the 'O2 sensor' is the EGR bung. (IMG:style_emoticons/default/wink.gif) |
ConeDodger |
Jul 1 2007, 11:18 PM
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#10
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Apex killer! Group: Members Posts: 23,608 Joined: 31-December 04 From: Tahoe Area Member No.: 3,380 Region Association: Northern California |
Very cool! Thanks for taking the time! (IMG:style_emoticons/default/smiley_notworthy.gif) I think the 'O2 sensor' is the EGR bung. (IMG:style_emoticons/default/wink.gif) Yup... Gotta be. No O2 sensor on a 914 from factory. |
newto914s |
Jul 2 2007, 12:28 AM
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#11
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Senior Member Group: Members Posts: 561 Joined: 16-February 04 From: Thornton, CO Member No.: 1,663 |
Very cool! Thanks for taking the time! (IMG:style_emoticons/default/smiley_notworthy.gif) I think the 'O2 sensor' is the EGR bung. (IMG:style_emoticons/default/wink.gif) Yup... Gotta be. No O2 sensor on a 914 from factory. I knew it wasn't an O2 sensor but I couldn't think what else it would be, thus the "of some kind" (IMG:style_emoticons/default/biggrin.gif) |
PeeGreen 914 |
Jul 2 2007, 12:42 AM
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#12
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Just when you think you're done...wait, there is more..lol Group: Members Posts: 10,219 Joined: 21-September 06 From: Seattle, WA... actually Everett Member No.: 6,884 Region Association: Pacific Northwest |
Wow, thanks for show us that. I would have never learned that else where. I have read a few books on 914s, and not one of them mentioned any of that.
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RohJay |
Jul 2 2007, 01:20 AM
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#13
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Member Group: Members Posts: 189 Joined: 24-April 07 From: Colombo, SRI LANKA Member No.: 7,689 |
This is very helpful. Thanks for your effort.
re. Bursch, are there diiferent versions to suit the various early engine sizes. ie. 1.7, 1.8 and 2.0? |
SirAndy |
Jul 2 2007, 01:53 AM
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#14
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Resident German Group: Admin Posts: 41,673 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
re. Bursch, are there diiferent versions to suit the various early engine sizes. ie. 1.7, 1.8 and 2.0? yes. one for 1.7L/1.8L motors and one for the 2.0L motors ... (IMG:style_emoticons/default/cool_shades.gif) Andy |
sean_v8_914 |
Jul 2 2007, 02:02 AM
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#15
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Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
instant classic thread!!!
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rhodyguy |
Jul 2 2007, 09:09 AM
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#16
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,089 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
the top hanger in post #14 is for the late (75-76) hes. the one for earlier version 2.0 hes are narrower (distance from bolt hole to bolt hole). i posted a picture of all 3 versions and the repsective b.h. measurements about 2 years ago.
k |
Cap'n Krusty |
Jul 2 2007, 09:45 AM
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#17
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
Very cool! Thanks for taking the time! (IMG:style_emoticons/default/smiley_notworthy.gif) I think the 'O2 sensor' is the EGR bung. (IMG:style_emoticons/default/wink.gif) Nice guess, but wrong. The EGR line bolts to the rectangular plate just to the right of the bung in question. That bung (with the device screwed into it) is an exhaust temp warning unit. There's a light on the dash, IIRC, that illuminates when the cat gets too hot. The Cap'n |
newto914s |
Jul 2 2007, 09:45 AM
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#18
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Senior Member Group: Members Posts: 561 Joined: 16-February 04 From: Thornton, CO Member No.: 1,663 |
Thanks Rhodyguy, I just edited #14 to include your picture.
Samson |
johannes |
Sep 24 2007, 02:13 PM
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#19
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Club Porsche 914 France President Group: Members Posts: 3,084 Joined: 13-January 06 From: France Member No.: 5,409 Region Association: France |
I say "I vote: CLASSIC" !!!!
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rhodyguy |
Sep 24 2007, 02:34 PM
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#20
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,089 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
to add to this. after communicating barber dave, there seems to be a varience concerning the 1.7/1.8 mufflers. as dave relayed to me, the early, early 1.7 bursch mufflers are configured for the rear valance with the hole as opposed to the valances with the notch.
k |
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