Where can I get a "Long Tube" Header for my RX-8?
07-16-2012, 05:39 PM
#29
Yes, I did. It does taper down a bit but does not seem all that restrictive. I talked with racing beat a while ago and they confirmed that they had messed around with lengthening their header (using the same flange) and had noticed some power gains. Would having my own larger custom made collector help? Probably... but this was easy and cheap. We'll see how it does.
Last edited by MagnusRacing; 07-16-2012 at 05:44 PM.
07-16-2012, 05:41 PM
#30
Don't I know it. Actually the floor is painted with the same paint used to paint the floors of airplane hangars. Has held up pretty well so far. Getting the floor smooth with an epoxy coating would have cost big bucks. The place was a big rig repair shop for many years previous to me occupying it and lots of heavy stuff was dropped on the floor. But it's a cheap location to store my race cars!
07-19-2012, 04:12 PM
#31
You want the lowest possible angle transition and then no point should be less than 2.75" at or past the merge (typically 3" is used)
However, as stated from the beginning I will challenge any multi-tube header as being irrelevant as to what actually provides the widest and highest output curve on a zero overlap Renesis engine
However, as stated from the beginning I will challenge any multi-tube header as being irrelevant as to what actually provides the widest and highest output curve on a zero overlap Renesis engine
07-29-2012, 11:13 PM
#32
Ok... there is DEFINATELY power to be had by lengthening the header. The lengthening of my header was the only modification I made to the car before the race at AAA Speedway this weeked and the car was definately stronger particularly on the top end and speeds were definately up. AAA Speedway is a high speed track that rewards power a lot. I set a class record and broke my previous best time by over 2 seconds. Of course many other factors could have contributed to this increase in speed but the car was undoubtably running at a higher speed at the end of the straights than it did at previous races with the unmodified racing beat header.
If you're in a class that allows this modification DO IT.
If you're in a class that allows this modification DO IT.
Last edited by MagnusRacing; 07-29-2012 at 11:16 PM.
07-30-2012, 12:22 AM
#33
Ok... there is DEFINATELY power to be had by lengthening the header. The lengthening of my header was the only modification I made to the car before the race at AAA Speedway this weeked and the car was definately stronger particularly on the top end and speeds were definately up. AAA Speedway is a high speed track that rewards power a lot. I set a class record and broke my previous best time by over 2 seconds. Of course many other factors could have contributed to this increase in speed but the car was undoubtably running at a higher speed at the end of the straights than it did at previous races with the unmodified racing beat header.
If you're in a class that allows this modification DO IT.
If you're in a class that allows this modification DO IT.
07-31-2012, 06:06 AM
#34
:facepalm:
Originally Posted by TeamRX8
as racing fabricator great Smokey Yunick used to say, "racing is a monkey see, monkey do business; if the winner has a 5 lb bucket of sh*t located over the right rear wheel and wins you can expect all the other monkeys to have the same thing at the next race regardless of whether or not they understand what they're doing"
07-31-2012, 11:41 AM
#35
You know what? If you never experiment with the car it'll never get faster either. I would dare to say that the vast majority of any type of mod, custom or not, has probably been done before so everyone is most likely copying somebody if you want to be a jackass about it.
I'm sure you've tried at least a handful of experiments with your car that yielded less than satisfactory results.
I'm sure you've tried at least a handful of experiments with your car that yielded less than satisfactory results.
07-31-2012, 01:12 PM
#36
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as racing fabricator great Smokey Yunick used to say, "racing is a monkey see, monkey do business; if the winner has a 5 lb bucket of sh*t located over the right rear wheel and wins you can expect all the other monkeys to have the same thing at the next race regardless of whether or not they understand what they're doing"
07-31-2012, 02:12 PM
#38
Originally Posted by TeamRX8
as racing fabricator great Smokey Yunick used to say, "racing is a monkey see, monkey do business; if the winner has a 5 lb bucket of sh*t located over the right rear wheel and wins you can expect all the other monkeys to have the same thing at the next race regardless of whether or not they understand what they're doing"
Smokey was a clever guy. But he was also a nut and a lot of people disliked him.
as racing fabricator great Smokey Yunick used to say, "racing is a monkey see, monkey do business; if the winner has a 5 lb bucket of sh*t located over the right rear wheel and wins you can expect all the other monkeys to have the same thing at the next race regardless of whether or not they understand what they're doing"
Smokey was a clever guy. But he was also a nut and a lot of people disliked him.
08-01-2012, 05:45 PM
#43
I only build one for less weight. You can make one flow better than the OE version, but I disagree that there is any benefit beyond those two reasons and you don't need a tubular to get there. Three tubes will have more surface area/weight than one all else being equal.
The main issue is that all the standard stuff revolves around fitting up with the OE components. IMO a 3" midpipe that then necks down at the flanges is like shooting yourself in the foot. That's the way most of them are built.
There are many reasons why you may have run faster. Just getting through the corner faster will result in higher engine/chassis speeds at the next corner. Basically your butt dyno means nothing in this instance. Unless you have before/after time vs velocity (acceleration) or dyno data to back it up you have no real idea where it came from. You added length to an RB header, which is exactly what they tested too. Maybe you found something they didn't, but then you already know my opinion.
.
The main issue is that all the standard stuff revolves around fitting up with the OE components. IMO a 3" midpipe that then necks down at the flanges is like shooting yourself in the foot. That's the way most of them are built.
There are many reasons why you may have run faster. Just getting through the corner faster will result in higher engine/chassis speeds at the next corner. Basically your butt dyno means nothing in this instance. Unless you have before/after time vs velocity (acceleration) or dyno data to back it up you have no real idea where it came from. You added length to an RB header, which is exactly what they tested too. Maybe you found something they didn't, but then you already know my opinion.
.
Last edited by TeamRX8; 08-01-2012 at 05:53 PM.
08-01-2012, 07:31 PM
#45
You know what? If you never experiment with the car it'll never get faster either. I would dare to say that the vast majority of any type of mod, custom or not, has probably been done before so everyone is most likely copying somebody if you want to be a jackass about it.
I'm sure you've tried at least a handful of experiments with your car that yielded less than satisfactory results.
I'm sure you've tried at least a handful of experiments with your car that yielded less than satisfactory results.
many of the parts on my car are custom with multiple iterations including the *entire* exhaust system, you are preaching to the choir
but since you brought it up, did you ever consider asking some questions or trying to evaluate the situation with a critical eye about what the real facts may be rather than having a knee jerk reaction to some unproven butt dyno commentary? Maybe you missed the 5 year old understanding the RB tried different lengths and came up with nothing substantial? How is it that adding some pipe on their manifold suddenly transformed this car into a rocket ship?
My opinion on the subject is all over this website. Why do you care what I think any way? I'm just another crazy nut that a lot of people dislike. LOL.
08-02-2012, 12:06 PM
#47
Were you informed of something different regarding testing by Racing Beat?
Also, Eric Meyer who raced in World Challenge claims to have done extensive dyno testing and found that a custom long tube header had a power increase over the shorter headers.
In regards to my butt dyno you're entirely right that such an instrument can be highly inaccurate
However, the track I was at I had raced at MANY times and the entry speed onto the main straight is very consistant. The car's speed was definately up and my shift points were sooner as I traveled down the straight (it's a long one followed by a high speed banked turn so you tach out in 5th by the end). As I said many other factors COULD have caused this - but it seemed pretty obvious to me that the car had improved power.
