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Big City Thunder Baffles: Washer/Diffuser position

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Old 04-07-2010, 08:51 AM
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Default Big City Thunder Baffles: Washer/Diffuser position

Question for BCT baffle owners or those who've seen them.. Is the washer/difusser in the baffle positioned to the front or rear of the baffle ? troop
 
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Old 04-07-2010, 09:49 AM
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I had the QQ baffles and IIRC it was set more toward the front of the baffle (toward the headpipe end).
 
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Old 04-07-2010, 10:19 AM
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Ok, thanks !
 
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Old 04-07-2010, 10:47 AM
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They're set aft on my QQ's.
 
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Old 04-07-2010, 03:50 PM
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Lol. I guess my IIRC isn't worth a crap anymore.... I had a 50-50 shot at least
 
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Old 04-07-2010, 04:32 PM
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Ha... Well, I went ahead and tack welded an I-bolt/washer to the forward side of my cheese grater baffle. I think the reason for the diffuser at the rear (of BCT baffles) is to disturb/tumble the straight outward air flow after it exits from the diameter reduced straight baffle. On my V&H basic slip-on grater baffles, I think the diffuser to the front will tumble the air even more before it hits the grater holes. That along with a thin layer of baffle packing will be used to slightly increase back pressure in my left side slip-on. A poor mans method of a tuned exhaust for my stock 09 crossover pipe/V&H slip-ons with 2-1/4" factory baffles. Hell, I only have $5.79 invested
 

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Old 04-07-2010, 11:27 PM
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Ya, I was wondering too, I picked up a used set of Big City Thunder baffles on e-bay and I'm pretty sure they won't come with instructions. My plan was to have the washer towards the front on my V&H Longshots???? Any thoughts??
 
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Old 04-07-2010, 11:52 PM
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Call BCT they're easy to talk with.
 
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Old 04-08-2010, 06:30 AM
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Originally Posted by 2002Fattie
Ya, I was wondering too, I picked up a used set of Big City Thunder baffles on e-bay and I'm pretty sure they won't come with instructions. My plan was to have the washer towards the front on my V&H Longshots???? Any thoughts??
They'll probably have the mounting bolt hole only on one end of the BCT baffle and that will go into your existing baffle spot.
 
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Old 04-08-2010, 09:29 AM
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Originally Posted by troop
They'll probably have the mounting bolt hole only on one end of the BCT baffle and that will go into your existing baffle spot.
Correct. On the big shots there was only one way to install them and that was with the cheese grater pointing forward.
 


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