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No I haven’t messed with the rest of the exhaust yet. I’m going to take it somewhere to have them weld the air tube that would go to the cat, it was just into exhaust pipes on mine since I don’t have any cats. I will measure to see where the header adapters need welded on too and have the place put in an o2 sensor bung. The other headers were too low to the ground plus we found out when driving it home from over an hour away that they were touching the floorboard near the gas pedal. It got so hot you could feel it easily and they were starting to rattle against the floor so yeah these fit a lot better and we knew they needed change as soon as possible after that. I think you could still change the plugs without loosening the header but I just put them in while they were loose.
So you took the AIR out? That leaves you with a tube going to the main cat. If don't have a cat, it doesn't need to be there. Even if you do, like 8 do for muffler reasons, you can dispense with the tube.
I'd run the O2 sensor as close to where the pipes meet.
One thing I wanted to ask is what any of you do when you have dual pipes and headers. When I took the exhaust off the only thing holding up the pipes was the hangers on the tailpipes and the connection at the headers. I don’t have any cats so that keeps it lighter but is this ok because the hedman headers said they could crack with weight on the headers like that?
If the headers can crack because of the cat being there, it is kind of flimsy.
So you took the AIR out? That leaves you with a tube going to the main cat. If don't have a cat, it doesn't need to be there. Even if you do, like 8 do for muffler reasons, you can dispense with the tube.
I'd run the O2 sensor as close to where the pipes meet.
Yeah, I meant that I would be having them just weld the exhaust pipe shut where the air tube used to go once I cut the air tube off of it. Then I’ll have them put the o2 bung at the header adapter so it’s as close to the header as possible.
Last edited by 85 CRVET; May 29, 2019 at 11:55 PM.
If the headers can crack because of the cat being there, it is kind of flimsy.
I don’t have any cats but you think it will be ok with the weight of the exhaust pipes being on the headers then? The only thing holding up both of the dual pipes is the hanger right at the exhaust tips and then them being connected at the headers is what holds the front, there’s no hangers in the middle to take the weight off the headers.
really bad idea to not have a center support. I highly suggest you fabricate a hanger. The risk is that it can contribute to braking the manifold studs over time. then a pain to extract the broken stud. it can also cause header joints to crack if the welds are poor. but a good weld should hold up. also if your exaust is clamped instead of welding it can allow the pipe connections to shift. However, it will be fine without a hanger for a while. I actually havent put a hanger on one of mine yet, and its been fine for 3 years. I bought a used 3" clamp for alater year from a forum member, and then I fabricated a peice that would allow me to mount it to stock mount holes and connect at ypipe end. but honestly that was more difficult than need be. It probly easier to use off the shelf hanger systems.
I don’t have any cats but you think it will be ok with the weight of the exhaust pipes being on the headers then? The only thing holding up both of the dual pipes is the hanger right at the exhaust tips and then them being connected at the headers is what holds the front, there’s no hangers in the middle to take the weight off the headers.
Don't know but my Borla cat back has the stock hangars which goes into the cat which is hooked into the Y pipe then to the headers. All band clamps. Nothing broke yet and TPIS did not say I had to put a hangar.
Ok, I’ll take it to my mechanic to hook up the rest of the exhaust and I’ll see if he can put a hanger at the crossover pipe too so it takes the weight off the headers. I’ve almost got everything else put back together now.
Ok, I’ll take it to my mechanic to hook up the rest of the exhaust and I’ll see if he can put a hanger at the crossover pipe too so it takes the weight off the headers. I’ve almost got everything else put back together now.
I suppose it won't hurt since it's a cheaper option and might not be as strong or as well made so go ahead
It's a global economy. Small companies need to be competitive to survive. I have to be, why shouldn't they be?
What cost of aggravation?
It's 2019. Chinese products are good. In many cases the manufacturing processes are far superior to stuff made here. The equipment is new, robotic controls, etc. US companies cannot compete because union thugs demanding outrageous wages and outdated equipment / manufacturing processes.
Between trade tariffs, investments in Chinese corporations, and the fact that we are paying American companies to import the goods I have no issues where the money is going.
Again, I'm running these on my Firebird. I have another few sets in my shop for other applications. I've used them, including their turbo headers in lots of other vehicles. Good quality.
-- Joe
Chinese products are not superior in quality at all. Especially where steel manufacturing is concerned. Read the link as just one an example....There are many more. https://gensteel.com/building-faqs/b...-steel-quality
Chinese products are not superior in quality at all. Especially where steel manufacturing is concerned. Read the link as just one an example....There are many more. https://gensteel.com/building-faqs/b...-steel-quality
Question. Are the Chinese products bad because they cannot do better or is it because we ask for it cheaper and thus get crap? When you tell me to build it for less next year, aren't you, in effect, asking me to either make less profit and/or short-cutting processing? When you keep buying crap, aren't you, in essence telling me "Attaboy. You are on the right track."?
Question. Are the Chinese products bad because they cannot do better or is it because we ask for it cheaper and thus get crap? When you tell me to build it for less next year, aren't you, in effect, asking me to either make less profit and/or short-cutting processing? When you keep buying crap, aren't you, in essence telling me "Attaboy. You are on the right track."?
You're spot on... but I for one, do the best I can to buy MIA products of any type. I hear people say oh Id be glad to give up 70% of every dollar I earn for Social Healthcare.... I never hear anyone say theyd be glad to pay more for American made products though... only how much more American made products cost... Speaking for myself, Id be perfectly happy to pay more for product's made here. As an example, I walked into a Red Wing Boot Store the other day... I picked out a pair of boots for $225.00 They were made in China.... On the opposite wall there were the almost identical boots for $335.00 they were made in the USA. I asked the attendant in the store the differences..... he said one pair was made from Chinese cows and the other from American cows.... obviously a tongue in cheek comment.... Even the warranty offered was the same. Well, my conscience got the best of me and I bought the ones Made in USA....
I suppose it won't hurt since it's a cheaper option and might not be as strong or as well made so go ahead
What do you mean it won’t be as strong or well made? I figured installing a hanger would be the best thing to do to make sure the headers can’t be hurt or the studs.
I got the rest of it all put together today except for the other exhaust pipes of course, and I bypassed the throttle body coolant as I had it apart too. These headers have plenty of clearance from the floorboard and oil filter and they are pretty much even with the oil pan so I can’t see them scraping ever. The air pump delete I found seems to be made good too and it was easy to install as they had instructions on which spacers go to which spot online plus you don’t even need to change your belt to a shorter one.
What do you mean it won’t be as strong or well made? I figured installing a hanger would be the best thing to do to make sure the headers can’t be hurt or the studs.
If the manufacturer is warning you that the product is needing an extra support, maybe it weaker that the stock system
Ok, I see what you mean. But didn’t the stock system have a hanger in the middle for the catalytic converter anyway? I was wondering if it did because I figured the exhaust shop that built the dual pipes would have made a hanger there if it was there on the stock system.
Ok, I see what you mean. But didn’t the stock system have a hanger in the middle for the catalytic converter anyway? I was wondering if it did because I figured the exhaust shop that built the dual pipes would have made a hanger there if it was there on the stock system.
I don't think mine did but I don't remember what it was. I check it out sometime
The OBX just dropped in and fit everything in the chassis. I'm not sure why his muffler shop cut the headers, but I'm willing to bet incompetence. I can't even begin to guess what that primary would have hit..
Looking at the pictures of an un-modified header and the headers on his car, it looks like they relocated the #7 primary.
Again, I ask, what did it hit??
-- Joe
I got some pictures that show exactly what the header looked like where it was rattling against the floor and almost melted through it.
This is how far they dented the header in and it still was right against the floor. And that’s the tube that they didn’t even mess with redoing. The other side they said was hitting the oil filter or right against it so it was too wide to fit on the outer side at the floor or body of the car and on the inside.
I got some pictures that show exactly what the header looked like where it was rattling against the floor and almost melted through it.
This is how far they dented the header in and it still was right against the floor. And that’s the tube that they didn’t even mess with redoing. The other side they said was hitting the oil filter or right against it so it was too wide to fit on the outer side at the floor or body of the car and on the inside.
Thats a hack job if I ever seen one. Thats not acceptable in my opinion. Someone should have said something before ruining the header like that.
Thats a hack job if I ever seen one. Thats not acceptable in my opinion. Someone should have said something before ruining the header like that.
Ya think? IDK about you and how you work but if this were my job, I'd refuse it from the time I discovered it and tell you "I can't do this". But the store needed to find a sucker to take money from so they went ahead, knowing full well that they'd never be able to do it. At least, not make it reasonably presentable and useful for it's purpose.
It's been a while, but if i remember correctly i bought the center support from a later lt1 c4 vette.
It bolted right up to my 700r4
Has springs with metal tabs on the end to bolt to the exhaust.
Then i went ome step further and bought the rear support from a C5 that bolts to the rear diff.
Surprisingly it bolted right up with no mods.
