Well lets see. Yesterday I went over to a friends house and put my greddy header on to my 95 LS. Everything went fine in the instalation eccept the seal between my header and my cat isnt very good. I can hear the sound of the exhaust coming out from under me when im driving it. So my guess was the seal isnt very good. But the bolts are really tight so i have some questions...
1. Would it be because the gasket i got isn't the right one or didnt work right. (my header didn't come with gaskets)
2. If that is the case do i need a gasket from the greddy company or can you guys tell me which gasket i should get.
3. Is this the normal sound. I dont think it is.

 

is anyone going to say anything??

 

what type of gasket did you get?

 

a decent gasket should have came with it...

 

First of all, did you torque the flange nuts to spec? Correct torque settings are 16lb-ft. That definitely is not the sound that you should get. If you get down there and you hear a hiss around that area, you definitely have a leak. Consult the company who you bought the header from, as a gasket should have arrived with it.

 

even if the torque setting is 16 pounds, there is a spring on each of the two bolts. once you tighten it to a certain point, there are no more threads to go further.

it could also be the wrong size donut gasket.

 

heh i dont have one at all and i am getting a little leak i think. i need to get a gasket to go in there i guess then dont i. oh well i can come next week.

 

thanks for the help guys but i was just wondering if you guys know how i could by a good gasket from the greddy company or if any other companies have one that would work

 

I replaced my gasket with the oem one from acura $18.00, worked fine for my DC Headers.

 

You should be able to use any doughnut gasket that is the correct size for your vehicle. I'm not sure of the size and that I am correct, anyone have some suggestions from this?