Sup guys, just wondering if this gap between the 4 header collars/flanges and the engine is anything to worry about. I put squares around them in the pic so theyre visible. All studs were torqued down to OE specs (9ft/lbs) and new gaskets were used too. Just wondering why there's still some gap there, as you can see. Bike makes no noise, I feel no air escaping so an exhaust leak is unlikely. Or maybe I do have a leak and dont know it? Is a leak very noticeable? I just dont want to over tighten and strip a bolt. What do you all think?

If you installed headers on your bike, is this normal to have that gap between the collar/flange and the engine casing?

 

Some better pictures would help. It's too blurry to tell what we're looking at. Put your digital camera in macro or close-up mode. The pictures will come out better.

 

ah, alright, I can take some better pics tomorrow. I figured the pic is good enough for people to atleast see the gap I was referring to, between the flange and those columns on the engine case.

 

Maybe this will do for now (not my pic)



There's the flange and you see the gap under it. Hope its better. If not, I'll have a better pic up tomorrow

 

added a better pic in the first post. Can someone please chime in??

 

OK, that's better. Like they say, a picture tells a thousand words. You installed new gaskets right ? Did they look like the ones below (the one on the right) ? If so, the seal is created by the round portion of the exhaust header pipe squeezing the gasket against the head. As the gasket gets squeezed, it crushes a little and seals the gap. The space between the header flange and the head where the bolt comes out is needed because of this crushing of the gasket. The torque that you apply is what does the sealing.

The long and short is you're fine. That's the way it's supposed to be.


You can see there is a gap on these as well too. This is a factory header on an F3.

 

hey thanks for the reply. I was just a little worried because when I had my OEM headers, the gap between the flange and the head was minimal. THen with these Arrow headers its more noticeable - I'll guess because the flange of the Arrow headers is more slim.

Yep those are the gaskets I used

 

Thanks man it helped me also...ihave two brothers haeaders and iwas wondering the same thats clears things.....hands up.

 

good stuff i'm about to put an hyperflo exhaust on my 1k, i'm glad i read this

 

Update...I called Hyperflo today to place an order for my 600RR but they're back ordered till June 20th...If you're willing to place your order now, and wait (Until June), the price will be prorated on a weekly basis from now until they're back in stock...for this week that makes the price $715 shipped....next week it'll probably be $730 and so forth...