passenger header is cracked any aftermarket replacements?

[beavis4g63t]

i've searched the forums and called hedmen, borla, and gibson. any suggestions?

[Toddicus]

if only one side is cracked, why would you want to put an "aftermarket" ex. mani on just one side?
your best bet is going to be to find a used one, or have your original just welded(maybe cheaper to do this)

[beavis4g63t]

i had no intention of replacing just the one. i can weld it up myself but i would rather upgrade than patch an already weak part. i own this business www.tuningtechnologies.com so maybe i'll just make some headers for it. i will be dynoing the truck soon to see what kind of power it makes before i do any upgrades.

[texasrover]

Other than sound, do you really think headers would do any good. The GEMS system will cancel it out, unless you chip it.

BUT what would be cool is if you can replace those with headers that dont leak and are coated or wrapped to decrease the heat inside the engine bay.

I doubt seriously you will benefit from any performance improvements... the ECU is not your friend.

[beavis4g63t]

i dont understand how the ecu could cancel out the benefit of better exhaust scavenging, and reduced heat.

[texasrover]

Well, the GEMs system monitors the air in the air out, the fuel/air mix etc.

Back in the day, we would throw headers on, modified intakes, high flow fuel pumps etc ... anything to get more air and more fuel to the oven.

We could manually cause this... we did not have the ECU by passing our modifications.

The GEMs system wants the air/fuel mix within a certain range and will cancel your modification to keep it there.

Obviously, certain things are good. You want the engine to inhale and exhale well. But going to far will be more money with little gain.

Anything that move the heat away from the engine and or engine bay is great... I just dont think you should expect the great performance enhancment that you would get with say, a 72 Challenger.

Like I said before... if you chip that Rover, and put headers on, now we are talking.

[texasrover]

I guess I should have been more clear.

I am not saying headers and decreasing the temp is bad, in fact, for that purpose it is a great idea... Just dont expect huge HP gains.

[beavis4g63t]

well i guess we will see we what happens when i throw it on my dyno. i'm kind of handy with electronic fuel injection so i'll see what i can do.

[texasrover]

Please let us know the results. Hey, if it works... I'll buy a pair of headers from you. The ability to wrap or coat those things really help in keeping temp down under the hood. That is worth it by itself.

[John C]

Originally Posted by texasrover

Please let us know the results. Hey, if it works... I'll buy a pair of headers from you. The ability to wrap or coat those things really help in keeping temp down under the hood. That is worth it by itself.

I heard wrapping wasn't a good idea (moisture) but I guess if you do it right it shouldn't be a problem. I was thinking of sending my headers to Jet Hot, has anyone used Jet Hot before?

BTW, I have the Janspeed headers with the O2 sensor holes.

[texasrover]

Not sure!

Do they do ceramic coating?

[John C]

Originally Posted by texasrover

Not sure!

Do they do ceramic coating?

They do. Cost around 300 buckaroos

[beavis4g63t]

Originally Posted by John C

I heard wrapping wasn't a good idea (moisture) but I guess if you do it right it shouldn't be a problem. I was thinking of sending my headers to Jet Hot, has anyone used Jet Hot before?

BTW, I have the Janspeed headers with the O2 sensor holes.

if you lived somewhere that moisture was prevalant or you did a lot of water crossing wrapping the headers may not be a good idea unless they are made out of stainless. also the thinner the wall the more likely they are to crack from the extra heat retained by the header wrap.

[beavis4g63t]

Originally Posted by texasrover

Please let us know the results. Hey, if it works... I'll buy a pair of headers from you. The ability to wrap or coat those things really help in keeping temp down under the hood. That is worth it by itself.

no problem, i'm basically interested in the same things any additional horsepower woulod be a bonus.

[AdrianS]

A lot of people said that headers wouldn't help much on a 3.9 RRC either. I did it a few years ago on my 91RRC (245 MT's, ARB w/winch, roof rack, 3" lift) and the power increase was great. I did Janspeed headers, hi-flo cats from Summit Racing welded to the stock y-pipe and a flow master muffler. Long steep hills use to knock me from 75mph to 50mph. With the new exhaust I was able to hold 75mph or floor it and actually speed up going up hill!!!! We are going to put the same exhaust on JohnC's DI (3.9) then were are going to put another set on my 98DI 4.0. I will let everyone know how it goes.