blackbullet76
Pro
Posts: 1134
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posted September 19, 2007 10:28 AM
porting out exhaust openings
This just popped in my head. I remember when I installed my smeg system, that the exhaust ports coming out of the head was pretty small, considering the size of the brocks header tubes. I was wondering if opening up these ports a little would help any? You wouldn't have to remove the head or anything, just open them up a little with the header removed. It's just an idea, so please don't rag me too bad if it's a stupid question 
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2007 ZX-14 black
Brocks s-meg exhaust
PCIII w/track map
BMC race filter
Flies removed
16 tooth front sprocket
Speedohealer
APE cam chain tensioner
Vortex rearsets
   
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BlackMagic14
Needs a job
Posts: 2058
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posted September 19, 2007 10:42 AM
I know when I used to "gasket match" the intake side for a little bit of a gain I dont know if this would pick up any power but talk to Brock and see what he thinks?? it wouldnt be that hard of a job
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Lucif3r
Novice Class
Posts: 34
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posted September 19, 2007 05:56 PM
No!!!...the ledge stops reversion.
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jw
Novice Class
Posts: 81
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posted September 19, 2007 06:42 PM
If you do any exhaust port work, avoid taking material off the floor.
It kills flow.
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BlackMagic14
Needs a job
Posts: 2058
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posted September 20, 2007 11:26 AM
my above post somehow got messed up and left about about 10 words out I was referring to gasket matching heads on a Car not a motorcycle I have no experience on motorcycle heads at all
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blackbullet76
Pro
Posts: 1134
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posted September 21, 2007 07:41 AM
Yeah, I know that gasket matching on the exhaust is a no-no. It needs a lip to help keep the gases from trying to go back into the port. But on a car you can raise the roof of the port all the way up to the where the header tube mates up and it helps flow. Just wondering if it would help on a bike.
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2007 ZX-14 black
Brocks s-meg exhaust
PCIII w/track map
BMC race filter
Flies removed
16 tooth front sprocket
Speedohealer
APE cam chain tensioner
Vortex rearsets
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