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Old 02-22-2011, 01:26 PM   #1 (permalink)
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Default OBX 4-1 vs Raceland 4-2-1?

Just trying to get some feedback on both of these for my 2000 Miata, right now I'm currently edging toward the OBX 4-1:

OBX 4-1




Raceland 4-2-1:
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Old 02-22-2011, 01:30 PM   #2 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

funny, i'd been looking into these for my 99...
my understanding is that with both, there are potential fitment problems.
i haven't pulled the trigger on either.
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Old 02-22-2011, 01:31 PM   #3 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

What do you use the car for?
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Old 02-22-2011, 01:36 PM   #4 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

general header design:
4-1 =better topend
4-2-1 = better midrange

HOWEVER, almost any header on a miata is more of an engine bling & weight reduction mod than a performance gain. IMO, go with whichever is cheaper but expect to need to get cracked welds fixed in a year or so or shell out better money for a racing beat or jackson racing
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Old 02-22-2011, 01:40 PM   #5 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

Quote:
Originally Posted by Broketuner View Post
general header design:
4-1 =better topend
4-2-1 = better midrange

HOWEVER, almost any header on a miata is more of an engine bling & weight reduction mod than a performance gain. IMO, go with whichever is cheaper but expect to need to get cracked welds fixed in a year or so or shell out better money for a racing beat or jackson racing
If you have a '99-'00 then you are restricted by that ugly cast manifold. There are a little over 10 whp to be gained from switching headers. It's just little bit, but it's there.

I think your comment would apply well for us '01+ (NB2) guys. We only get 3-6 whp for the mod, and that's hard to justify.
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Old 02-22-2011, 01:41 PM   #6 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

Regarding to the OP's question, you will get marginally more power from the 4-2-1 then 4-1, and better midrange.

http://www.racingbeat.com/mazda/perf...ison-test.html

Check out the curves on the dyno graphs in that link.

Raceland tends to honor their warranty too, if you consider that a purchase factor.
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Old 02-22-2011, 01:41 PM   #7 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

I dicked around with the raceland 4-2-1 for a while on my 91. Overall, decent for daily driving. Nothing spectacular. The said fitment problems are true. It pulled the rest of the system towards the center of the car cause of one bad bend. It also had the tendancy to rub on the bell housing a bit. One plus though, the welds were surpeisingly solid. All had good penetration and looked real strong.

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Old 02-22-2011, 01:43 PM   #8 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

I would go with the DC Sports 4-2-1. My bad, had a flashback to the import scene in 2000. I apologize.
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Old 02-22-2011, 02:07 PM   #9 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

Uses for my car, not that it really matters since I like modifying:

1. Daily Driving
2. Spirited Driving, Mountain/canyon road driving

Thanks for the information, the Raceland header is sounding a lot more appealing to get.

I plan on installing the BP5A/MSM cam eventually as well.
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Old 02-22-2011, 02:10 PM   #10 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

Yeah, I would go with the Riceland in that case.
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Old 02-22-2011, 02:18 PM   #11 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

I bought the Racelands. I didn't experience any fitment issues, but I've heard others have. It was a good buy for me.
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Old 02-22-2011, 02:21 PM   #12 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

i think the fitment is different on an nb
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Old 02-22-2011, 02:28 PM   #13 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

Quote:
Originally Posted by PocketAce View Post
If you have a '99-'00 then you are restricted by that ugly cast manifold. There are a little over 10 whp to be gained from switching headers. It's just little bit, but it's there.

I think your comment would apply well for us '01+ (NB2) guys. We only get 3-6 whp for the mod, and that's hard to justify.

Is it really that much for 99-00 engines? I barely noticed any difference on mine & i went from totally stock exhaust to RB header & 2.5" highflow metallic core cat & straight through magnaflows with mandrel bends & other than better engine respoinse & a nice exhaust note I didn't "feel" a big difference like that
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Old 02-22-2011, 02:39 PM   #14 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

Quote:
Originally Posted by gryffinwings View Post
Just trying to get some feedback on both of these for my 2000 Miata, right now I'm currently edging toward the OBX 4-1:

OBX 4-1




Raceland 4-2-1:

Both of these designs are pretty bad. If you look at the merges (or exhaust dumps) in these cases, you see that they are not smooth or controlled. Just abrupt. Take a look at a Maxim Works or Maruha VP Header and you will see much more smooth and controlled merges. That is where the power is to be had from.

Maruha:


Maxim Works:


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Old 02-22-2011, 02:51 PM   #15 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

but you're also comparing a couple of $150-200 header to $1000 ones
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Old 02-22-2011, 02:52 PM   #16 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

Quote:
Originally Posted by Quinn View Post
Both of these designs are pretty bad. If you look at the merges (or exhaust dumps) in these cases, you see that they are not smooth or controlled. Just abrupt. Take a look at a Maxim Works or Maruha VP Header and you will see much more smooth and controlled merges. That is where the power is to be had from.

Maruha:


Maxim Works:


I won't lie, those are some seriously sweet headers that I wish I could get. Just fior curiousities sake, where would you buy these at?
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Old 02-22-2011, 02:53 PM   #17 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

Quote:
Originally Posted by Broketuner View Post
but you're also comparing a couple of $150-200 header to $1000 ones
Exactly, so its almost not even worth wasting the time or money with one of those. The OP would probably be better off using an 01+ manifold instead.
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Old 02-22-2011, 03:03 PM   #18 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

What about a RB or JacksonRacing ? They cost a bit more, but i think it's worth the money. especialy because the exhaustpipes of the RB are all the same length (the OBX is a knockoff of that) etc.
but i would add a flexible part.
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Old 02-22-2011, 03:05 PM   #19 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

Quote:
Originally Posted by gryffinwings View Post
I won't lie, those are some seriously sweet headers that I wish I could get. Just fior curiousities sake, where would you buy these at?
miataroadster.com
rev9autosport
maruha
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Old 02-22-2011, 03:10 PM   #20 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

Quote:
Originally Posted by gryffinwings View Post
I won't lie, those are some seriously sweet headers that I wish I could get. Just fior curiousities sake, where would you buy these at?
For the Maruha: Chikara Motorsports, specifcally contact username: Ocean

For the Maxim Works: Corksport had the best pricing when I ordered mine.

Quote:
Originally Posted by Cane View Post
What about a RB or JacksonRacing ? They cost a bit more, but i think it's worth the money. especialy because the exhaustpipes of the RB are all the same length (the OBX is a knockoff of that) etc.
but i would add a flexible part.
The Racing Beat and OBX are pretty much identicle. I don't have any personal experience with the Jackson Racing, but the overall design looks much better than the RB.
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Old 02-22-2011, 04:23 PM   #21 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

http://www.racingbeat.com/mazda/perf...velopment.html

they said the RB 4-1 is better all around than the older 4-2-1...just as good mid range and a better top end...so I'd get the 4-1...the only 4-2-1 I have seen that's better than the RB is the maxim works

Quote:
Originally Posted by PocketAce View Post
Regarding to the OP's question, you will get marginally more power from the 4-2-1 then 4-1, and better midrange.

http://www.racingbeat.com/mazda/perf...ison-test.html

Check out the curves on the dyno graphs in that link.

Raceland tends to honor their warranty too, if you consider that a purchase factor.
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Old 02-23-2011, 01:02 AM   #22 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

You can also find an 01+ oem header like quinn mentioned. It will be cheap and higher quality then both you listed and provide the power bump. The NB1 cast manifold is terrible.
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Old 02-23-2011, 02:12 AM   #23 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

Quote:
Originally Posted by Broketuner View Post
Is it really that much for 99-00 engines? I barely noticed any difference on mine & i went from totally stock exhaust to RB header & 2.5" highflow metallic core cat & straight through magnaflows with mandrel bends & other than better engine respoinse & a nice exhaust note I didn't "feel" a big difference like that
Well, 10hp is not a large difference by all means, it's probably hard to feel, or even the 13-18 extra HP you must be making. But the convention developed from dyno time is that the NB1's manifold pretty much... sucks.
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Old 02-23-2011, 04:13 AM   #24 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

Quote:
Originally Posted by KBKS-MX5 View Post
I dicked around with the raceland 4-2-1 for a while on my 91. Overall, decent for daily driving. Nothing spectacular. The said fitment problems are true. It pulled the rest of the system towards the center of the car cause of one bad bend. It also had the tendancy to rub on the bell housing a bit. One plus though, the welds were surpeisingly solid. All had good penetration and looked real strong.
The slaves at the Raceland factory must have been fed well that day.
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Old 02-23-2011, 10:13 AM   #25 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

I went raceland a month ago after figuring out a few cracks in my manifold. Sounds good and works ok with the exception of an occasional ringing noise from the headers vibrating up against my bell housing. Other than that, I say it's worth the money.
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Old 02-23-2011, 11:17 AM   #26 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

Quote:
Quote:
I dicked around with the raceland 4-2-1 for a while on my 91. Overall, decent for daily driving. Nothing spectacular. The said fitment problems are tr
The slaves at the Raceland factory must have been fed well that day.
I was thinking the same thing! Haha. I oppened the box and both me and my buddy thought someone made a mistake sending a halfway decent part.

Its only a matter of time before it falls apart, good welds or not. Just spend for the decent part. It will last you longer and give better potential gains..

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Old 02-23-2011, 11:44 AM   #27 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

2 Gearhead Miata Club members bought the Raceland headers to be installed on '01 & '02 Miatas.
Neither one fit! Raceland sent another 2, Still do not fit! hitting on the bell housing!
I then pulled out my old R speed header 4-2-1 that I had used on my '94. It fit without the tubes hitting the bell housing. I am using that header now on my '02 by cutting off the collector and welding on a flex and new flange.
In order to use the Raceland I would have had to flatten one of the tubes down to 1/2 the diameter.
I even sent extensive pictures of both headers side by side and installed to Raceland & offered to send my R Speed header to them so they could see the dif. but they declined.
I will say that their responsiveness to sending the new setsof headers was fast though!
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Old 02-23-2011, 12:37 PM   #28 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

attention to detail, look at this tig welding.
gold means perfect heat, blue is too much heat.
but it's beautiful.
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Old 02-23-2011, 03:19 PM   #29 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

Quote:
Originally Posted by KBKS-MX5 View Post
Its only a matter of time before it falls apart, good welds or not. Just spend for the decent part. It will last you longer and give better potential gains..
Exactly. I spent my money on a Racing Beat header (which is backed up by dyno graphs and experience with the Miatas not rivaled by most any other company.) I haven't put it in yet, but I have full confidence in their products, as I have other pieces from Racing Beat and they are stellar.
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Old 02-23-2011, 03:24 PM   #30 (permalink)
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Default Re: OBX 4-1 vs Raceland 4-2-1?

for the right price, i'd buy a racing beat knowing it'll fit without hitting the bell housing
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