| Slant Six Forum https://www.slantsix.org/forum/ |
|
| fastening headers https://www.slantsix.org/forum/viewtopic.php?t=64077 |
Page 1 of 1 |
| Author: | Badvert65 [ Thu Sep 19, 2019 4:29 am ] |
| Post subject: | fastening headers |
I know that with the factory one piece exhaust manifold, you need to stick to the 10 ft-lb tightening spec to avoid cracking. Is this still necessary with two piece headers (like the Clifford design)? I am thinking that I can 'snug' them up a little tighter to ensure a good seal (mostly for the intake). What is the general consensus about fastening headers? |
|
| Author: | drgonzo [ Thu Sep 19, 2019 5:36 am ] |
| Post subject: | Re: fastening headers |
I think I torqued mine to 180 in-lbs. or 15 ft-lbs. using a Clifford gasket that looks to be about .100" to .125" thick. |
|
| Author: | Rick Covalt [ Thu Sep 19, 2019 8:27 am ] |
| Post subject: | Re: fastening headers |
I have never torqued any header gaskets on any of my header installs. I use the good " green" gasket and tighten them down by feel. Run them till hot and then recheck. If I was to guess I would say they are at least 30 ft lbs. |
|
| Author: | Dart270 [ Thu Sep 19, 2019 8:36 am ] |
| Post subject: | Re: fastening headers |
I run them down about as tight as you can (comfortable on hands) with a std. 1/2" wrench or a 1/4" ratchet drive. I'm with Rick, about 30 ft-lbs. Never cracked anything. Green gaskets best (Brian D. has 'em still?), but others work OK too. Remflex is good. Felpro and Victor and others work if the header opening is not too big and you are not using a scalloped 81-up head. I sometimes double those up. Lou |
|
| Author: | Rick Covalt [ Thu Sep 19, 2019 11:29 am ] |
| Post subject: | Re: fastening headers |
I put grease or vasoline on both sides of the gasket also. Have re-used them 3 or 4 times. |
|
| Author: | Badvert65 [ Fri Sep 20, 2019 4:48 am ] |
| Post subject: | Re: fastening headers |
Great. I am using the 'green gasket' and I did 'torque' things down by hand (tighter than the factory specs for the cast iron). I didn't think I would have any problems, so it looks like I am on the right track. Thanks guys. |
|
| Page 1 of 1 | All times are UTC-08:00 |
| Powered by phpBB® Forum Software © phpBB Limited https://www.phpbb.com/ |
|