Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

> I need a new muffler.....1971, 1.7L, what are my options?
potomacmidget
post Dec 18 2022, 09:08 PM
Post #1


I gotta have more cowbell....
**

Group: Members
Posts: 161
Joined: 27-March 11
From: Maryland
Member No.: 12,860
Region Association: North East States



Hi -

The Bursch exhaust on my 1971 1.7L is beyond repair at this point. I unbolted it and need to purchase a new unit. I am pretty open on replacements, meaning I don't have to replace it with another Bursch (of course would like to keep the price manageable but that is another topic...). With that said, minus the Bursch, the car is bone stock and so I would need a new system, the gaskets and the associated bolts as they are not in good shape (I am unsure of the bold size, any help there appreciated too). I did the measurements from a picture I found on the site and I definitely have the dimensions for the 1.7 L HX.

I read in another thread that the tailpipe on a vendor's unit was not compatible with the stock rear valence, so I guess I need to avoid that unit (Dansk?).

I know that 914rubber has a stainless steel system too - anyone have any experience wit that one? Any advice appreciated. Thanks in advance.

Best,
Reg
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
 
Reply to this topicStart new topic
Replies
wonkipop
post Dec 19 2022, 03:19 PM
Post #2


Advanced Member
****

Group: Members
Posts: 4,407
Joined: 6-May 20
From: north antarctica
Member No.: 24,231
Region Association: NineFourteenerVille



the dansk should go straight in the earlier 914.
its the later design single piece muffler without the smaller hot dog outlet pipe and the design superseded the earlier type and was intended as the replacement part from 74 on.

so the tailpipe should exit the hole in the earlier valence as far as i can work out.
maybe others know better, but the single piece muffler was the intended replacement part for all 1.7 914s after the 1.8 came out in 74.

i've got a 74 and sit in far off australia. even getting a dansk here is a pain in the arse by the time freight and customs and aus $ conversion happens. which forced me to make an interesting discovery.

the 914 muffler is just the kombi (bus) / 412 muffler upside down. all VW did was weld the exhaust inlet pipe flanges on upside down compared to a bus/412 muffler.

its interesting if you look around the VW parts retailers. the bus muffler by dansk goes for about half the $ of the 914 one. and as far as i can tell its the same thing.
if you are handy with a grinder and a welder you can buy the bus one and do a bit of cut and shut on the inlet flanges and you are in business. buy the tailpipe section on its own, its available as a separate part.

i don't have a dansk, i managed to find a stainless steel bus muffler here in aus 20 years ago and have modified it as above. should outlast me.


EDIT.
i can see how a dansk would screw up after looking up a early 4 with the deep rear valence. no way would it fit. 73/74 much further to left and edge of car on tailpipe.
interesting, if porsche thought the later muffler superseded they would have had to be fitting a later rear valence as well?

it might be pretty hard to find one of those early mufflers with the extra hot dog tail pipe section that turns out before the left hand end of main muffler - if you have an early valence. looks like that is what the tail pipe would have to do. which is kind of a geometric impossibility with later dansk type full width muffler and where inlet pipes from engine land. that early valence outlet is inboard of end of muffler!

i'm pretty sure its an early VW 411 muffler. maybe an NOS is a possibility if you searched around?

or get the dansk and get a later valence to go with it.

Attached Image
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post

Posts in this topic
potomacmidget   I need a new muffler.....1971, 1.7L   Dec 18 2022, 09:08 PM
rhodyguy   If the piping is still ok, simply replace the muff...   Dec 19 2022, 08:26 AM
windforfun   I went with a Dansk rig that I think I purchased f...   Dec 19 2022, 11:44 AM
mb911   :agree:   Dec 19 2022, 02:43 PM
wonkipop   the dansk should go straight in the earlier 914. i...   Dec 19 2022, 03:19 PM
dr914@autoatlanta.com   the dansk factory duplicate looks good fits well a...   Dec 20 2022, 10:32 AM
nathanxnathan   Busdepot sells an Ernst muffler that is what the D...   Dec 20 2022, 04:22 PM
wonkipop   Busdepot sells an Ernst muffler that is what the ...   Dec 20 2022, 06:14 PM
nathanxnathan   a bus muffler is different. I see what you...   Dec 20 2022, 07:52 PM
wonkipop   here are some photos of back when i modded the bus...   Dec 20 2022, 06:39 PM
vintagethunder   If the Dansk muffler outlet isn't right for yo...   Dec 20 2022, 07:18 PM
nathanxnathan   Also, looking at the Dansk "914" muffler...   Dec 20 2022, 08:01 PM
wonkipop   @[url=http://www.914world.com/bbs2/index.php?showu...   Dec 20 2022, 08:28 PM
nathanxnathan   @[url=http://www.914world.com/bbs2/index.php?showu...   Dec 20 2022, 09:00 PM
wonkipop   @nathanxnathan here are the two dansk ads side b...   Dec 20 2022, 08:37 PM
nathanxnathan   [b]@[url=http://www.914world.com/bbs2/index.php?s...   Dec 20 2022, 09:05 PM
nathanxnathan   @wonkipop Ok, I'm seeing it now. 2 bolts on t...   Dec 20 2022, 09:08 PM
wonkipop   [b]@[url=http://www.914world.com/bbs2/index.php?s...   Dec 20 2022, 09:24 PM
wonkipop   @nathanxnathan - you can kind of see what must ha...   Dec 20 2022, 09:48 PM
potomacmidget   Dear All - thanks for all the posts; this has be...   Dec 21 2022, 02:41 PM
wonkipop   @[url=http://www.914world.com/bbs2/index.php?showu...   Dec 22 2022, 12:46 AM
nathanxnathan   @[url=http://www.914world.com/bbs2/index.php?showu...   Dec 22 2022, 01:53 AM
wonkipop   @[url=http://www.914world.com/bbs2/index.php?show...   Dec 22 2022, 02:04 AM
wonkipop   @nathanxnathan i pulled the old muffler down and...   Dec 23 2022, 01:27 AM
Garland   “while i was snooping around i found this early ...   Jan 3 2023, 09:17 AM
dr914@autoatlanta.com   and for the early cars with the long valance with ...   Jan 3 2023, 09:37 AM
dr914@autoatlanta.com   RE: I need a new muffler.....1971, 1.7L   Jan 3 2023, 09:38 AM
Garland   I’ve never seen one, before. The tip I have is f...   Jan 3 2023, 02:17 PM
CCE   For my 74 I got the Dansk muffler. It sounds nice...   Jan 6 2023, 06:49 PM
wonkipop   @potomacmidget latest car sold on BAT is a 72 wi...   Jan 7 2023, 04:47 PM
CCE   [b]@[url=http://www.914world.com/bbs2/index.php?s...   Jan 8 2023, 12:42 AM
wonkipop   [b]@[url=http://www.914world.com/bbs2/index.php?...   Jan 8 2023, 02:30 AM
CCE   [quote name='CCE' post='3049897' date='Jan 8 2023...   Jan 8 2023, 07:34 AM


Reply to this topicStart new topic
2 User(s) are reading this topic (2 Guests and 0 Anonymous Users)
0 Members:

 



- Lo-Fi Version Time is now: 15th June 2024 - 12:49 PM