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electricblue71 
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Joined: Jul/30/2013 Location: Chicago Status: Offline Points: 17 |
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 Topic: header boltsPosted: Jul/31/2014 at 10:03am |
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Have the original manifolds on my 71 304 javelin, picked up a pair of rusty headers at the kenosha show and had them ceramic coated for cheap - look awesome. Looking to put new bolts on, anyone know the correct size i should use? Copper or paper gaskets, size?
Thanks! mike
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bikerfox
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Joined: Aug/02/2009 Location: USA Status: Offline Points: 4473 |
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Posted: Jul/31/2014 at 4:42pm |
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If you didn't get the headers "trued up" (the shop determines if the flange is flat or not--if not flat, then the flange can be belt sanded), then I would use "remflex" gaskets. I had an exhaust leak after the headers were trued up and the gasket eliminated the leak. Others have their preferences.
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1969 Rebel SST (1970-1987)
1968 AMX (2005-2011) 1969 SC/Rambler (2011-2019) 1970 Javelin (2019 to ?)"Jane" |
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mstrcrftr
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Joined: Jul/12/2010 Location: houston Status: Offline Points: 2066 |
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Posted: Jul/31/2014 at 4:43pm |
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im not sure of the bolt size but i would try to use allen head bolts. makes tightening them a whole lot easier..
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Mopar_guy
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Joined: Jun/07/2009 Location: Ohio Status: Offline Points: 4837 |
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Posted: Jul/31/2014 at 4:52pm |
Yeah but try getting them off when they rust up! I've been there and it's not fun. If you do use them, get stainless instead of regular steel. |
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THE MENACE
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Joined: Nov/04/2008 Location: So. California Status: Offline Points: 4437 |
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Posted: Jul/31/2014 at 5:22pm |
I have 3/8" thick header flanges. I used 3/8"-16 X 1 1/4" long header bolts. You can get them with 3/8" hex heads so there is no drama getting a box wrench on them as long as the tubes are properly clearanced at the flange.
Dennis
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Former Owner of:
The Craig Breedlove "AERO AMX" Still Owner: SS/AMX #9 replica (THE BIG MENACE) 70 AMX 416, EFI, Nash 5 speed 70 Javelin 401, 727 (Wife's car) 72 Gremlin Autocross Project. |
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iapexl8r
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Joined: Apr/13/2008 Location: north idaho Status: Offline Points: 639 |
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Posted: Jul/31/2014 at 5:34pm |
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spectre makes a set of header bolts that have the allen key on the insid and a six piont 7/16 on the outside
http://www.summitracing.com/parts/spe-4668/overview/
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68-73 amx
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Joined: Jun/14/2012 Location: Pa. Status: Offline Points: 532 |
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Posted: Jul/31/2014 at 8:34pm |
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Where did you get your rusty headers coated.Was thinking of doing the same.
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Javelin69
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Joined: Dec/11/2013 Location: Madison wi Status: Offline Points: 187 |
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Posted: Aug/01/2014 at 8:57am |
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I'm using the felpro exhaust manifold gaskets on mine. The ones with the metal face on one side. Since they are 3 pc per side it's a bit of an act to get them all in there. They seem to hold up a lot better than the soft ones I had, they blew out. With these even after I had a bolt come loose they held up. Just tightened it back up and it was all good.
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BDCVG
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Joined: Dec/19/2007 Location: Endless Mtns. Status: Offline Points: 993 |
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Posted: Aug/01/2014 at 9:14am |
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They might back out over time anyway and I haven't found a replacement for the OEM hollowed out bolts.
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1970 AMX 390 5 spd full Control Freaks front and rear suspension
2014 E63 AMG-S wagon 1965 Austin-Healey 3000 MK III |
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mstrcrftr wrote: