|
|
|
|
| Author |
|
|
Senior Member
Join Date: Feb 2000
Location: Lacey, WA. USA
Posts: 25,310
|
Exhaust Stud Trim
With luck I will be installing the backdated exhaust in the next two days. I plan to not replace exhaust studs and I hope to avoid cutting the existing ones down. The backdated exhaust flanges are thinner, so I plan to use several steel washers under each small barrel nut. In this way, I can reinstall the old exhaust system if necessary.
Is this possible?
__________________
Man of Carbon Fiber (stronger than steel) Mocha 1978 911SC. "Coco" |
||
05-23-2002, 07:51 AM
|
|
|
Black and Blue
Join Date: Jul 2000
Location: Austin, TX USA - Ya'll
Posts: 2,552
|
I just removed my heat exchangers...i noticed that the driverside HE's have a different flange thickness than the passengers. Upon further inspection, it turns out that the PO used a slightly larger nut, 5/16 I think, that he used as a spacer. I will most likely use some of these as spacers when i put mine back together. It all looked pretty good before i removed them. it seems that the passenger side HE on my SC has about the same flange thickness as the early style. Or maybe its just mine.
__________________
Kemo 1978 911 SC Non-Sunroof Coupe, two tone Primer Black and SWEPCO Blue, Currently serving as a Track Whore 1981 911 SC Sunroof Coupe, Pacific Blue Project, Future Daily Driver |
||
|
05-23-2002, 08:45 AM
|
|
|
Senior Member
Join Date: Jun 2000
Location: N. Phoenix AZ USA
Posts: 28,943
|
Supe,
Would really like to see a spacer on each stud rather than a handful of washers to take up the slack. Looks better and bet that it would stay on longer as well. Tried any parts houses for something like this? Completely agree about not pulling the studs... would rather go to the Dentist! Joe
__________________
2013 Jag XF, 2002 Dodge Ram 2500 Cummins (the workhorse), 1992 Jaguar XJ S-3 V-12 VDP (one of only 100 examples made), 1969 Jaguar XJ (been in the family since new), 1985 911 Targa backdated to 1973 RS specs with a 3.6 shoehorned in the back, 1959 Austin Healey Sprite (former SCCA H-Prod), 1995 BMW R1100RSL, 1971 & '72 BMW R75/5 "Toaster," Ural Tourist w/sidecar, 1949 Aeronca Sedan / QB |
||
|
05-23-2002, 09:29 AM
|
|
|
Senior Member
Join Date: Feb 2000
Location: Lacey, WA. USA
Posts: 25,310
|
Thanks for the input. In case anyone knows, what is the precise thickness of the spacers I would need? Precision is somewhat important because of the design of those small barrel nuts.
I have another question: Metal exhaust gaskets are different on one side than the other. The big hole has a seam around it where the metal wraps around. The seam is not on the other side. Should I install so that the seam faces any particular direction?
__________________
Man of Carbon Fiber (stronger than steel) Mocha 1978 911SC. "Coco" |
||
|
05-23-2002, 10:32 AM
|
|
|
Registered
Join Date: Mar 2001
Location: Marysville Wa.
Posts: 22,431
|
find a length of steel tube and cut 12 spacers out of it. on the space shuttle, the seam might blow open if exhaust got under the lip, but not on a 911. so either way works. use the gaskets that have a squishable liner, rather than the all metal liner which tends to not compress.
__________________
https://www.instagram.com/johnwalker8704 8009 103rd pl ne Marysville Wa 98270 206 637 4071 |
||
|
05-23-2002, 10:38 AM
|
|
|
Information Junky
Join Date: Mar 2001
Location: an island, upper left coast, USA
Posts: 73,189
|
From a previous post (SSI Superstars)
The difference between thick and thin is big. The thin are about .275" & the thick are .825 thick (about 1/4" & 3/4" for the decimally impaired)
  Sheese, a veteran like you, super, not searching thi SSI clinic threads  . . .and you were there
__________________
Everyone you meet knows something you don't. - - - and a whole bunch of crap that is wrong. Disclaimer: the above was 2¢ worth. More information is available as my professional opinion, which is provided for an exorbitant fee. 
|
||
|
05-23-2002, 11:15 AM
|
|
|
|
Senior Member
Join Date: Jun 2000
Location: N. Phoenix AZ USA
Posts: 28,943
|
Island911,
Just how many sets of SSI's do you have sitting around the garage?  Got any extra that are just in your way and want to give away?? Joe
__________________
2013 Jag XF, 2002 Dodge Ram 2500 Cummins (the workhorse), 1992 Jaguar XJ S-3 V-12 VDP (one of only 100 examples made), 1969 Jaguar XJ (been in the family since new), 1985 911 Targa backdated to 1973 RS specs with a 3.6 shoehorned in the back, 1959 Austin Healey Sprite (former SCCA H-Prod), 1995 BMW R1100RSL, 1971 & '72 BMW R75/5 "Toaster," Ural Tourist w/sidecar, 1949 Aeronca Sedan / QB |
||
|
05-23-2002, 11:30 AM
|
|
|
Senior Member
Join Date: Feb 2000
Location: Lacey, WA. USA
Posts: 25,310
|
I believe I got the exhaust gaskets at a place called John Walker's Workshop. I'll take my chances with their quality. They are all-silver, but they are a sandwich design. I guess it does not matter which side faces the head. I know that a leak will not cause millions of gallons of liquid oxygen to explode several miles above the earth, but I have BTDT with exhaust leaks and I prefer they don't.
The pipe slicing idea sounds like a good one.
__________________
Man of Carbon Fiber (stronger than steel) Mocha 1978 911SC. "Coco" |
||
|
05-23-2002, 12:54 PM
|
|
