i have a gap between the header and right where it connets to the gasket or something. everything is good but it sounds like a rattling muscle car engine coming out of the exhuast. plz give me advice.

I'm not sure what you mean, is the engine side flange of the header warped or something? If that's the case, get it planed and reinstall it, should axe the problem.

i mean the end of the headers under the car that connets to the pipe systems of the exhuast. theres a gap somewhere between there. and how do i reinstall it.

I assume you're talking about a flange-to-flange connection, probably 2.5" diameter. Gasket is probably a standard 2-bolt design such as this: [attachment=43927:exhgasket.jpg] Any auto parts store should carry it.



You need to undo 2 probably rusty bolts, remove the old gasket, insert the new gasket, and put in 2 new bolts and tighten the beejeebers out of it. You should be able to accomplish this with the exhaust still hanging under the car. If you don't have access to a lift, you'll have to safely jack and support the car to provide enough room to get under it. Lying on my back under a car working on a rusty exhaust is probably my most-hated car-related activity. If the bolts are too rusty to get off, don't waste time. Just break them or cut them. You really should replace them with new unless they are in unusually good shape.



Success (obviously) will depend on the exhaust being in reasonably good condition and properly supported.

there is also exaust goo you can put there to help when you put a new gasket, if there is a large space then something is out of whack.

I bent my RB collector flange from overtorquing those two bolts. Steel bends without much force.



Alot of assembly/disassembly can warp the flange if you put a bit of pressure on everytime, then you have to flatten it back out (manually grind or get it planed).



Couldn't use enough exhaust fudge on it to seal up, last time, so I ground it flat.

one more question. the flange to flange was broke by going up a curb and i think its a little flat or something. do you still remove the gasket and replace it with a new one or get a new exhuast system?

Ahhh.... now we get the truth!



https://www.nopistons.com/forums/pub...#>/biggrin.gif



If you bent the metal up, you'll need to get it back in shape or no gasket is going to fix the leak. It really depends on how much its bent. Is the pipe bent, or just the flange?



If the exhaust is in good shape, you can surely salvage it. You might just get a shop to fix it for you, if it's going to need more than just a gasket.

i scrape my exhaust too much.



gaskets never last.



im about to pay someone to weld it together.

we used to double up header gaskets that like to leak alot

yeah the exhuast is in good shape. just the part near where the header pipe connets is where i think a bolt or some thing holding them together got bent and came off. there is a small gap between them. should i just go to a auto shop and let them weld it together? or just buy some sort of gasket or some headers system to replace it.

haha, before my car died, I had just paid a shop to add in another flange connection.



With it all welded together it was a serious bitch to remove or install.

maybe a flex pipe will be good for you

I say either take it to a shop or post a nice clear picture of the connection in question!



It's really hard to offer advice without knowing what the damage looks like. If you're just missing a bolt, then a new gasket and bolts should fix it, but that's assuming the flanges and pipe are in good shape.

but where? im scraping the front flange on my rb presilencer i think, im pretty sure.



not much room for a flex in the header in front of that?

I know they make short ones, I have one on my DP.

if you weld it the whole thing will probably end up breaking anyhow.

Maybe you can get a short one to go forward of the presilencer , might have to cut it down.

everything is good from the muffler tip all the way to where it hits the headers. you get me.. right there is where it is bent and has a gap between it. i think one or two bolts came off during the impact of the curb. can i just take it to the shop and tell them to weld the headers to the pipe where it connets the pipe towards the gasket.

come on rotary dudes. help me out here. could i just weld it together. (the headers flange to exhuast flange or pipe)

Sure, why not?

can i? will that solve the leak between it? if it do ill weld it together instead of buying a whole new exhuast system.

one more question. how much do you guys think it will cost me for me to get it weld together.

on or off the car?





either way figure anywhere from $30-$75

You might be able to heat the pipe up with a propane torch and bend it back into spec...

ill just stick to the welding part. not sure if i can raise the car up high enough to do that propane heating thing.