Topic: If I wrap the headers of my CB500 will I have to re-jet??

[manjisann]

Does anyone know if I will have to rejet or retune my carbs if I wrap the headers?  I am going from a 4 into 4 to a 4 into 2 exhaust on my 1973 cb500 and want to wrap the headers and I will paint the mufflers with some of that high heat paint.  I have heard conflicting reports that the wrap will make me need to rejet.  Just wondering if anyone has any experience with this?

Thanks,
Brandon

[Soos]

Thats a thought i had never had.

Supposedly the exhaust gasses gain velocity due to the lack of heat loss.
??Possibly helping the upper rpm scavenging effect??

Looking forward to a answer with this Q.

l8r

[chopstar500]

Is this a trick question?!? Sounds fishy to me...    Yeah... I'm gonna go ahead and just say no.

[jjwaller]

  I am going from a 4 into 4 to a 4 into 2 exhaust on my 1973 cb500 and want to wrap the headers and I will paint the mufflers with some of that high heat paint.  I
Thanks,
Brandon

Going from the 4-4 to 4-2 possibly.
Wrapping, ridiculous. 

[uptworedline]

short answer: no
long answer: no

[markjenn]

The effect of wrapped header is extremely marginal so it won't affect jetting.  Likewise, if you're looking for a performance boost, you'd need magnifying glass to find it.

- Mark

[manjisann]

I am not looking for a performance boost, I am just looking to make it look better.  I have seen some of the header pipes wrapped and it looks decent, but I had read in some places that you might have to rejet if you do this because it supposedly had such a big effect on the temps.  From the sounds of it, it should work fine, Hooray!! 

Thanks all!

Brandon

[uptworedline]

i wouldn't be disappointed if you posted some pics here after you're done wrapping them.