Mac Ceramic Longtubes Quality

[helty]

yeah, 4V parts are crazy.

wonder if my gf's mom would let me put a bigger turbo on her beetle?

 

[DSG40thGT]

yeah, 4V parts are crazy.

wonder if my gf's mom would let me put a bigger turbo on her beetle?

lmao, not sure.

 

[Stang|ess]

I have non ceramic Mac's.. couldnt be happier. no problems what so ever. it is alot of internet bs

um no. it's really a hit of miss with mac. i've been lucky with their prochamber (but i dont think people really complain about the prochamber), but there are countless others of people that complain about their headers.

im sure all those people are in it together to ruin macs great reputation for putting out great quality products at a cost we can afford

 

[01Steeda]

im sorry but i disagree. my local shop has been installing them on cars for years and has yet to have any issues with them. Most every stang around here has them and none have had a problem.

 

[Stang|ess]

Could be with where you live. No snow, no salt on the roads so it's less prone to start rusting.

If you do a search, slag destroyed some 4v motor, and they're notorious for burning oil on the 4v motors.

 

[01Steeda]

did it destroy your motor? or is that something you read second hand?


and second how the hell does a header make you burn oil? If your burning oil it is because of bad rings or bad valve seals. how does a header cause that?

 

[tomustang]

Could be with where you live. No snow, no salt on the roads so it's less prone to start rusting.

If you do a search, slag destroyed some 4v motor, and they're notorious for burning oil on the 4v motors.

They did NOT destroy a 4V motor, that is a the fault of the owner, he should've known better when you add L/T's without a tune

 

[tomustang]

im sorry but i disagree. my local shop has been installing them on cars for years and has yet to have any issues with them. Most every stang around here has them and none have had a problem.

I'm not a shop, but I've been using mac for over 5 years (yeah i love the sound) but they suck on quality and rust, even the new ones

 

[01Steeda]

I am not saying they are the number 1 header by any means, but come on they are worth the money. I could really care less how pretty they are either, I can barely see mine.

 

[timeless2]

MAC does one thing well. They hit the middle of the road for quality and cost. Don't knock 'em till you try 'em (i.e. don't hop on the hate machine without ammunition).

If you fear their quality and reputation, then fork over the cash for something else and STFU.

There are many brands I would prefer over MAC, but hey, we live in a world of constraints.

 

[01Steeda]

Could be with where you live. No snow, no salt on the roads so it's less prone to start rusting.

If you do a search, slag destroyed some 4v motor, and they're notorious for burning oil on the 4v motors.

also , i dont have salt on the roads in the winter... its in the air year round. Saltwater is overlooked. no i dont go to the coast alot in my car, but when i do i see salt corroded cars everywhere.

 

[tomustang]

also , i dont have salt on the roads in the winter... its in the air year round. Saltwater is overlooked. no i dont go to the coast alot in my car, but when i do i see salt corroded cars everywhere.

or flooded ones

 

[Skud]

A little over a month ago I sent an email to Mac to the tune of the following:

Hello,

I've recently purchased a set of Ceramic coated long tube headers for my 2002 Mustang GT.

Shortly after purchasing them I began reading many reports of people having severe oil consumption (1 quart per 100 miles seems to be the reported average), severe blue smoke out of the tailpipe and engine damage. The reports claim that only the MAC long tube headers were installed and the smoking occurred almost immediately after installation.

Upon disassembly of the engine, many people have reported finding a fine "sand-like"substance in the oil as well as scoring in the cylinder walls. The result is, of course a ruined engine.

As I continued reading I had only become increasingly concerned that these weren't a "few crazy people who don't know what they are doing". These are people who know a thing or two regarding automobiles. Some of the individuals have had the headers professionally installed by speed shops and some have done the installation themselves. The results have been the same either way. Blue smoke and engine damage.

I am wondering, what can you tell me about this situation? Is MAC aware of this issue and has it been corrected? With the number of incidents occurring I am debating on whether or not to return the headers for another brand. I would rather not, as the MAC's I have now look to be high-quality pieces.

If I receive no response to this email I will assume that you have no guidance for me and I will be returning the MAC headers for another brand. This is my first MAC product I have bought and I would hate for it to be my last.

I await your response.

Thanks!!
Riley Foster

They responded 2 days later with this:

They smoke because there is no back pressure, most likely these guys are running off rd pipes. Its not the headers but the stock heads. They cannot handle the extra velocity and seep oil. The headers are actually doing there job very well, the high amount of velocity in the exhaust “quicker rev time” creates a ventura or a suction the oil seeps through the stock valves. I have a ls1 camaro 2001 I put the headers and off rd pipe on and I got blow by “too much velocity in the exhaust” and smoke came out my tail pipes. Vehicles are more prone with the air intake and off rd h pipes, I put my cats back on problem solved. This only occurred at 4500-6000 rpms wide open throttle. ITS NOT A HEADER ISSUE IT’S A FORD ISSUE. Ford designed the stock valves for the stock exhaust you run headers and off rd and you get smoke or oil consumption.

So, take it for what's it's worth.. Oh, and I'm just the messenger.. :SNSign:

Riley

 

[jasonh_86]

but they have that stupid crimp in 2 of the drivers side pipes

Exactly why i'm gonna be a little weiry about going with BBK

I guess we'll have to custom fit an H onto some SLP Longtubes.

That's what I was thinking about doing with a prochamber and SLP LT's.. I love the prochamber sound but REALLY want SLP LT's

Or I could just trade up to a Mach or Kewbra and say F'k it

But.. teh 2v can nevah lose

Noob gave you the cold shoulder

I'd stick with what's proven. Ask your pimp, jason, for some money and buy Bassani, or Hookers. Don't have to remove the passenger side to do tranny work

:Word:

 

[tomustang]

But.. teh 2v can nevah lose

ban.t

 

[jasonh_86]

ban.t

But.. teh LS1/2/7 are 2V's, aren't they?


But i know i know..

4V>2V

 

[Stang|ess]

They did NOT destroy a 4V motor, that is a the fault of the owner, he should've known better when you add L/T's without a tune

It is my understanding that slag got into the motor itself, not because of a lack of tune. I'll see if I can dig up that thread.

 

[csledd]

yeah im lowered and ive had my exhaust for over and year and maybe ive scraped like twice.. once was definately my fault too. the x in the x-pipe hangs lower than my headers do lol

 

[helty]

yeah im lowered and ive had my exhaust for over and year and maybe ive scraped like twice.. once was definately my fault too. the x in the x-pipe hangs lower than my headers do lol

yeah, last time I switched out race pipes and cats I used my spare jack to raise the X as high as I could (while torqueing the bolts that connect the X and C/B) without causing a leak. worked out pretty good but now the cats still scrape on the slightest bump. Dont know why they had to make them round?

The rest of you.........
































PIITB

 

[csledd]

yeah, last time I switched out race pipes and cats I used my spare jack to raise the X as high as I could (while torqueing the bolts that connect the X and C/B) without causing a leak. worked out pretty good but now the cats still scrape on the slightest bump. Dont know why they had to make them round?

lol i dunno.. i only run race pipes

no emission laws r0x my s0x