Headers Ruining Valves?
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Postmaster
Joined: Jun 2007
Posts: 2,621
Likes: 1
From: Sweetwater Texas
Headers Ruining Valves?
I'm about to install some headers on my truck this weekend, but it will be a few days (Thursday or so) before I can get my truck into a muffler shop to install a whole new exhaust system. My question is this, some friends of mine claimed that running open headers for a few days going to work will burn up my valves since there will be no backpressure because the exhaust will just be dumping straight out. Is this true? And do yall think that just running without any exhaust besides the headers for a couple of days is a bad idea?
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
Dean.. What vehicle do you have? Is this thing EFI or carb? If EFI and you have the O2 sensor installed and hooked up, then the motor should be safe, but a carb'd motor will run extremely lean and you risk burning up the valves.. as your friends suggested. You can run a vehicle with open headers.. but it's going to be rediculously loud and dangerous for anything flamable near the header collectors. It'll be dumb luck if you don't get pulled over or start a fire.. or both.
Thread Starter
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Postmaster
Joined: Jun 2007
Posts: 2,621
Likes: 1
From: Sweetwater Texas
It's my '87 (info's on my sig), I already wellded a nut into my headers for my 02 sensor, and I'm not worried about the cops, because I can take some county roads to work. I also rigged up dumps to keep any kind of flames that might come out of the headers towards the ground, and the only thing that would have a risk of getting hot is my floorboards.
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
OK.. you should alright then... it'll just suck to be a bug on the road for a couple days around your place.
Here's a few pics of the custom system I just finished putting together. From longtube headers there is now mendrel bent 2.5" Y pipes cut and welded by your's truely, into a 2into1 collector, which goes to a Magnaflow 3" cat and a Flowmaster Super40 3" muffler. The tailpipe is 3.5". I'l snap a few more pics of the system on the truck and add them later.
http://ca.pg.photos.yahoo.com/ph/conan@rogers.com/detail?.dir=/309dre2&.dnm=ef74re2.jpg&.src=ph
Here's a few pics of the custom system I just finished putting together. From longtube headers there is now mendrel bent 2.5" Y pipes cut and welded by your's truely, into a 2into1 collector, which goes to a Magnaflow 3" cat and a Flowmaster Super40 3" muffler. The tailpipe is 3.5". I'l snap a few more pics of the system on the truck and add them later.
http://ca.pg.photos.yahoo.com/ph/conan@rogers.com/detail?.dir=/309dre2&.dnm=ef74re2.jpg&.src=ph
