Exhaust flanges - where to buy?, 1973 1.7 |
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Exhaust flanges - where to buy?, 1973 1.7 |
ThePaintedMan |
Dec 7 2011, 07:32 PM
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#1
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Advanced Member Group: Members Posts: 3,886 Joined: 6-September 11 From: St. Petersburg, FL Member No.: 13,527 Region Association: South East States |
Hello all,
Wondering if any of you know where to purchase just the exhaust flange for a 73 1.7? This is the rectangular type with two holes. I have a set of SSIs I got for a reasonable price on ebay that need new flanges. I'm not really concerned with getting stainless steel flanges, just something I can weld onto whats there. Would this be overly difficult to fabricate? Do you think a local muffler shop would have them? Thanks! -George |
Jeffs9146 |
Dec 7 2011, 07:42 PM
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#2
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Ski Bum Group: Members Posts: 4,062 Joined: 10-January 03 From: Discovery Bay, Ca Member No.: 128 |
You talking about these?
Attached thumbnail(s) |
jimkelly |
Dec 7 2011, 07:57 PM
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#3
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Delaware USA Group: Members Posts: 4,969 Joined: 5-August 04 From: Delaware, USA Member No.: 2,460 Region Association: MidAtlantic Region |
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ThePaintedMan |
Dec 7 2011, 08:22 PM
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#4
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Advanced Member Group: Members Posts: 3,886 Joined: 6-September 11 From: St. Petersburg, FL Member No.: 13,527 Region Association: South East States |
Yep, like those ones on Engman. Except, cheaper steel preferably. So are the 2.0s different than the 1.7s? Look the same to me. |
Larry.Hubby |
Dec 7 2011, 10:18 PM
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#5
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Member who doesn't post much, but has a long time in 914s Group: Members Posts: 186 Joined: 24-November 04 From: Palo Alto, CA Member No.: 3,172 Region Association: Northern California |
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underthetire |
Dec 7 2011, 11:20 PM
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#6
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914 Guru Group: Members Posts: 5,062 Joined: 7-October 08 From: Brentwood Member No.: 9,623 Region Association: Northern California |
The 2.0 stainless and the 1.7 stainless are reported to be the same size tube, so they should work. Don't cheap out, you'll be sorry. Get the stainless.
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TheCabinetmaker |
Dec 8 2011, 07:45 AM
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#7
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I drive my car everyday Group: Members Posts: 8,304 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
Yep, like those ones on Engman. Except, cheaper steel preferably. So are the 2.0s different than the 1.7s? Look the same to me. Yes. The 2.0 is different than the 1.7. The tubes on the SSI's are the same size but the flanges are different shapes and hole pattern is different. |
nathansnathan |
Dec 8 2011, 07:52 AM
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#8
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Senior Member Group: Members Posts: 1,052 Joined: 31-May 10 From: Laguna Beach, CA Member No.: 11,782 Region Association: None |
Take into consideration that welding of dissimilar metals casues a galvanic corrosion, especially with the heat.
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Eric_Shea |
Dec 8 2011, 08:24 AM
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#9
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PMB Performance Group: Admin Posts: 19,278 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains |
Cheaper than $20 bucks?
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ThePaintedMan |
Dec 8 2011, 07:28 PM
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#10
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Advanced Member Group: Members Posts: 3,886 Joined: 6-September 11 From: St. Petersburg, FL Member No.: 13,527 Region Association: South East States |
Hello all, Wondering if any of you know where to purchase just the exhaust flange for a 73 1.7? This is the rectangular type with two holes. I have a set of SSIs I got for a reasonable price on ebay that need new flanges. I'm not really concerned with getting stainless steel flanges, just something I can weld onto whats there. Would this be overly difficult to fabricate? Do you think a local muffler shop would have them? Thanks! -George Doh! It looks like this just ain't gonna happen. The only ones available from Engman are stainless and for a 2.0, which from what I gather won't fit a 1.7 anyway. Even then I'm not set up to weld stainless - I'd be welding stainless to stainless with regular wire. I think I'll just try to make a template from whats left and try to fab my own from blank steel. No idea how I'm going to cut the holes - hole saw maybe? I'll have to look into galvanic corrosion, but since the original ones had steel flanges, is this really that big of a deal? Thanks again guys. |
nathansnathan |
Dec 8 2011, 08:03 PM
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#11
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Senior Member Group: Members Posts: 1,052 Joined: 31-May 10 From: Laguna Beach, CA Member No.: 11,782 Region Association: None |
Galvanic corrosion is the oxidation that forms when unlike metals touch each other.
There are some stainless heat exchangers, I've read, that only the shell is stainless, but the ones I've got are definitely all stainless, flanges included. It's just 304, not 316, so they do corrode and will be slightly magnetic. Maybe yours, though, are mild steel innards? Here are mine, the little square nut on the one on the right I've got to weld another one on as it's rusted away despite being stainless, probably from ... galvanic corrosion. (IMG:http://www.914world.com/bbs2/uploads_offsite/www.914club.com-11782-1291419587.1.jpg) |
jcd914 |
Dec 8 2011, 08:47 PM
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#12
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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 |
SSI got cheap with teh 914 HEs and used mild steel on the flanges for a while.
Maybe they used mild steel for the nuts as well. You can weld stainless with mild steel wire it works, not the best choice but it works. Welding mild steel flanges on to stainless pipes is not much different than stainless flanges to stainless pipes with mild wire. Jim |
ThePaintedMan |
Dec 8 2011, 09:57 PM
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#13
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Advanced Member Group: Members Posts: 3,886 Joined: 6-September 11 From: St. Petersburg, FL Member No.: 13,527 Region Association: South East States |
SSI got cheap with teh 914 HEs and used mild steel on the flanges for a while. Maybe they used mild steel for the nuts as well. You can weld stainless with mild steel wire it works, not the best choice but it works. Welding mild steel flanges on to stainless pipes is not much different than stainless flanges to stainless pipes with mild wire. Jim Thanks for the replies guys. Yeah, the whole point of this is that I just need to get new flanges on the car. The flanges on the SSI's I ordered are shot, and the headers on the car now are WELDED to the exhaust (flanges were removed at some point). I'm planning on cutting the exhaust, and welding new flanges on the exhaust and the HEs. So all in all, I'll actually need 4 flanges. I think its important to note that this car is never going to be like most of yours. I'm a graduate student just trying to piece the thing back together enough for it to be fun to drive to campus every once in awhile, and to enter a Chumpcar race next year with a few friends of mine. So, doing things on a budget is a prerequisite for me. If anyone has any ideas of how I can create the new flanges out of mild steel, please let me know! Keep in mind, I don't have access to any crazy equipment. Almost forgot. One of the SSI tubes is actually broken inside the exchanger tin. What would be the best way to go about welding this? You think cutting the spot welds, then welding the pipe and then welding it all back together would work? I'll post pictures of it this weekend, after I finish finals tomorrow. -George |
jcd914 |
Dec 8 2011, 11:07 PM
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#14
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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 |
<snip> If anyone has any ideas of how I can create the new flanges out of mild steel, please let me know! Keep in mind, I don't have access to any crazy equipment <snip> Find some one local (no shipping) with old OE HEs or mufflers that that are rusty and cut the flanges off them. <snip> Almost forgot. One of the SSI tubes is actually broken inside the exchanger tin. What would be the best way to go about welding this? <snip> The general thought line of the board is that once the pipe has broken internally they should not be repaired and used as HE anymore. Strip the sheet metal off and weld the pipe but don't enclose the repair. The concern is a possible leak at the repair and introducing carbon monoxide into the passenger compartment while using the heater. We all prefer 914 owners and passenger live thru their 914 experience. Jim |
ThePaintedMan |
Dec 9 2011, 01:25 AM
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#15
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Advanced Member Group: Members Posts: 3,886 Joined: 6-September 11 From: St. Petersburg, FL Member No.: 13,527 Region Association: South East States |
<snip> If anyone has any ideas of how I can create the new flanges out of mild steel, please let me know! Keep in mind, I don't have access to any crazy equipment <snip> Find some one local (no shipping) with old OE HEs or mufflers that that are rusty and cut the flanges off them. <snip> Almost forgot. One of the SSI tubes is actually broken inside the exchanger tin. What would be the best way to go about welding this? <snip> The general thought line of the board is that once the pipe has broken internally they should not be repaired and used as HE anymore. Strip the sheet metal off and weld the pipe but don't enclose the repair. The concern is a possible leak at the repair and introducing carbon monoxide into the passenger compartment while using the heater. We all prefer 914 owners and passenger live thru their 914 experience. Jim Jim, I like the way you think. I would agree that repairing them is probably not the best decision. I'll weigh this one heavily, but I do have a CO meter for the cabin already. Heard that was a purty good idea. |
Mikey914 |
Dec 9 2011, 01:30 AM
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#16
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The rubber man Group: Members Posts: 12,677 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None |
You are actually getting in to more complicated fabrication, but still pretty easily done. You need to drill out the spot welds on the clam shells and replace the section of tube that has blown out, the re-weld. Don't forget to pickle the metal or it will rust after it has been welded.
You my find it actually easier to just have new tubes made and re-use the clamshells. |
jimkelly |
Dec 9 2011, 05:48 AM
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#17
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Delaware USA Group: Members Posts: 4,969 Joined: 5-August 04 From: Delaware, USA Member No.: 2,460 Region Association: MidAtlantic Region |
2.0 and 1.7/1.8 flanges are different.
see 1.7/1.8 on a pair of 2.0 sshe's pic. this one set i have is stainless btw and are $30 shpd. Attached image(s) |
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