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Header wraps

  • Thread starter Thread starter NelanCustoms
  • Start date Start date
AOD said:
If you used the exhaust wrap coating as mentioned above, you wouldn't have fraying!
Click to expand...

Yeah but the old bolts are stuck in the head and I need to work at them sometime to get the bolts out without breaking them off. I'm having a lot of trouble with that. So I wrapped mine with the headers still on the bike.
 
I'm surprise that so many of you are using header wraps. Do your engines run hotter as a result of this?
I wrapped a set of headers on a mazda rotary engine I used to rally. I found that the engine ran a lot hotter( dangerously so) when I was fanging it out, on longer special stages. I had to remove the wrap to avoid cooking the engine. At moderate revs the engine performed well!! It's amazing how much engine heat dissapation occurs through exhaust radiation!
If the exhaust wraps work so well, why aren't all the factory racers running wrapped exhausts? Some may do, I'm not sure, just a thought!!
 
My guess is that it isn't sanctioned by the rules. That or they just get their exhuasts coated with a ceramic coating, seeing as header wraps destroy the header. Keeping all that heat in turns the metal brittle faster
 
49er said:
I'm surprise that so many of you are using header wraps. Do your engines run hotter as a result of this?
I wrapped a set of headers on a mazda rotary engine I used to rally. I found that the engine ran a lot hotter( dangerously so) when I was fanging it out, on longer special stages. I had to remove the wrap to avoid cooking the engine. At moderate revs the engine performed well!! It's amazing how much engine heat dissapation occurs through exhaust radiation!
If the exhaust wraps work so well, why aren't all the factory racers running wrapped exhausts? Some may do, I'm not sure, just a thought!!
Click to expand...
People only tend to use header wrap for 3 reasons
1. To keep the exhaust gases hot on their way out of the head for extra performance. On a road bike you might not even notice the diff.
2. Hide or protect your exhaust pipe. A cheap option that works well if done right.
3 Looks. A matter of personal choice
As for race bikes they use ceramic coating on the header to insulate and keep the heat in.
On one of my racebikes i tried both wrap and coating. My bike ran hot with the wrap (like your race car) the wrap also caught fire in the end.
I the made a new pipe and had it coated inside and out with a ceramic coating. Which made a diff with the power of the bike it also ran a bit cooler (not much) but the main advatage was the life of the headers.they lasted much much longer than anything else I had on.
Cheers
 
KiwiGS said:
People only tend to use header wrap for 3 reasons
1. To keep the exhaust gases hot on their way out of the head for extra performance. On a road bike you might not even notice the diff.
2. Hide or protect your exhaust pipe. A cheap option that works well if done right.
3 Looks. A matter of personal choice
As for race bikes they use ceramic coating on the header to insulate and keep the heat in.
On one of my racebikes i tried both wrap and coating. My bike ran hot with the wrap (like your race car) the wrap also caught fire in the end.
I the made a new pipe and had it coated inside and out with a ceramic coating. Which made a diff with the power of the bike it also ran a bit cooler (not much) but the main advatage was the life of the headers.they lasted much much longer than anything else I had on.
Cheers
Click to expand...

Thanks for your feedback KiwiGS. I can understand how the ceramic coated pipes would help the engine run cooler and last much longer.
I am ordering a new Cycle Works slash pipe for my 850 and will get that ceramic coated. My old pipe is still good, but replacements mightn't be available in the future, hence me buying now!!
Contrary to what some others believe, I rate these pipes, with the correct tuning parameters.
 
49er said:
Thanks for your feedback KiwiGS. I can understand how the ceramic coated pipes would help the engine run cooler and last much longer.
I am ordering a new Cycle Works slash pipe for my 850 and will get that ceramic coated. My old pipe is still good, but replacements mightn't be available in the future, hence me buying now!!
Contrary to what some others believe, I rate these pipes, with the correct tuning parameters.
Click to expand...
No worries mate.
I have had cycle works pipes on most of my roadbikes and had no propblems at all. They are what they are a replacement pipe that sound a bit more "throatie". I had pipes HPC coated in Dorkland some time ago.With great results (cant remember how much now).
Hows the xmas weather going to be upthere? I am heading up that way on the 24 (my parents have not long moved to Hastings from Waipukurau).
You heading to the cemetry circuit on 26th? I am (If I can sneak away!)
Cheers
 
KiwiGS said:
No worries mate.
I have had cycle works pipes on most of my roadbikes and had no propblems at all. They are what they are a replacement pipe that sound a bit more "throatie". I had pipes HPC coated in Dorkland some time ago.With great results (cant remember how much now).
Hows the xmas weather going to be upthere? I am heading up that way on the 24 (my parents have not long moved to Hastings from Waipukurau).
You heading to the cemetry circuit on 26th? I am (If I can sneak away!)
Cheers
Click to expand...

Give me a PM. I'm heading to Taupo for Xmas. I'd like to catch up if possible, while you're up this way. Could be tempted to take in the cemetry circuit too!!
 
Although comments people have said to me over the years lead me to believe its far from a performance pipe, The slash pipe has a great sound and thats really all that matters when it comes to GS's and things like say GSX750's.
I look at it this way....If you picked up 2 or 3 horsepower on a GS850, would you really notice it? I doubt it but if your bike sounds like God when it pulls away from the lights while your mates sportsbike sounds like a sewing machine, you gonna be wearing a big smile :-)

Anything has to be better than stock right?!

And when it comes down to it, even if you got the best 4 into 1 and stuck it on a GSX1100 (or derivative), the gains wont be huge unless you compliment the pipe with several other mods and even then you'd probably make great gains at peak revs and lose some of the Engines awesome midrange which is really the bit that makes them so enjoyable to ride IMHO.
 
Silvermachine81 said:
Although comments people have said to me over the years lead me to believe its far from a performance pipe, The slash pipe has a great sound and thats really all that matters when it comes to GS's and things like say GSX750's.
I look at it this way....If you picked up 2 or 3 horsepower on a GS850, would you really notice it? I doubt it but if your bike sounds like God when it pulls away from the lights while your mates sportsbike sounds like a sewing machine, you gonna be wearing a big smile :-)

Anything has to be better than stock right?!

And when it comes down to it, even if you got the best 4 into 1 and stuck it on a GSX1100 (or derivative), the gains wont be huge unless you compliment the pipe with several other mods and even then you'd probably make great gains at peak revs and lose some of the Engines awesome midrange which is really the bit that makes them so enjoyable to ride IMHO.
Click to expand...

At my age, the exhaust sound doesn't mean Jack sh!t. If the exhaust note was the persuading factor, I'd never have the present system fitted to the 850. With my level of industrial deafness, I can't tell what the exhaust sounds like while riding whith a full face helmet on.

If a 4-1 pipe were to give a 2-3 hp gain over stock pipes, then the saving in weight from running 4-1 as opposed the original 4-2 along with the HP increase would normally be felt by a seasoned rider!
In my case, there is also an increase in capacity and CR, which has seen a significant increase in mid range and some top end torque.
Like you say, it's very much a matter of balancing the mods to ensure that you gain an increase, in that already awesome mid range torque.
HP for HP's sake? I don't think so!
 
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