The ITB info thread.
07-25-2007, 06:25 AM
#92
0.0 BAR
Join Date: Dec 2002
Posts: 0
Re: The ITB info thread.
Originally Posted by AMkrew
Chris, that first set you did turned out just right. I'm sure the subsequent sets you've put together have been even better.
I still remember those 38mm cbr's I put together ages ago. The throttle response was instant. And, no codes, even on the pg7 map you gave me back in the day. I've got a set of 929's in the garage. I'm going to be making another set for the 76mm pg6b'd block downstairs. I simply need to find a set of the stock velocity stacks, as the seller didn't think to send them to me with the throttlebodies themselves.
I still remember those 38mm cbr's I put together ages ago. The throttle response was instant. And, no codes, even on the pg7 map you gave me back in the day. I've got a set of 929's in the garage. I'm going to be making another set for the 76mm pg6b'd block downstairs. I simply need to find a set of the stock velocity stacks, as the seller didn't think to send them to me with the throttlebodies themselves.
Ya the next set is pretty big step up. Busa's bored to 48mm plates. Already have a some thoughts on stacks for them. I also have a flowbench access now so testing will be done has well on them. Of course all for a b16a head my fav.
Manifold design is a little different I have only done stuff on paper etc but it should work. All the itb's I have done I have gotten port allignment damn close on them these I want dead on
Pics will be up once im done with them along with some flow #'s on a stock b16a intake port
07-29-2007, 09:26 PM
#93
3.0 BAR
Join Date: Aug 2003
Location: NE-PA
Posts: 4,666
Re: The ITB info thread.
How bad of a difference is it if the ports aren't in a direct straight line with the TB's? I had my neighbor behind me tig up some tubing onto my old b16a intake I cut up, and the 2 outside ones must of moved a bit when he was welding. 
07-30-2007, 06:48 AM
#94
0.0 BAR
Join Date: Dec 2002
Posts: 0
Re: The ITB info thread.
well if its a couple mm thats starving that cylinder for sure. Thats why most of these people do kinda suck imo. Test fitting and port matching is key. If its just a hair off just bust out the die grinder and blend it in if its more than a mm well you could run with it if its already done
07-30-2007, 10:39 PM
#95
3.0 BAR
Join Date: Apr 2006
Posts: 3,015
Re: The ITB info thread.
Originally Posted by chris
well if its a couple mm thats starving that cylinder for sure. Thats why most of these people do kinda suck imo. Test fitting and port matching is key. If its just a hair off just bust out the die grinder and blend it in if its more than a mm well you could run with it if its already done
08-01-2007, 02:31 AM
#97
3.0 BAR
Join Date: Aug 2003
Location: NE-PA
Posts: 4,666
Re: The ITB info thread.
Originally Posted by chris
either would be a solid choice. The busa itb's need port work on them to perform over the gsxr 1000's
08-01-2007, 03:08 AM
#98
0.0 BAR
Join Date: Dec 2002
Posts: 0
Re: The ITB info thread.
Originally Posted by slo_crx1
Yeah I think I'm going to take a die grinder to the back side of mine to open them up a bit. Where it tapers down just screams restriction to me.
45mm plate on the busa and tapers to 42mm :1. Looks like you can bore the back side to around 45mm keeping enough material that is safe
I already started on my set that will retian the stock plates. Already got the 48mm plates being made
I cant wait to get it all done. Reving the **** out of b16a on itbs makes me a happy happy man
08-01-2007, 03:36 AM
#99
3.0 BAR
Join Date: Aug 2003
Location: NE-PA
Posts: 4,666
Re: The ITB info thread.
Sweet! That's what I'm talking about, and if worse comes to worse there's a bike performance shop at the end of town that said they can bore them out and make new throttle plates for me too. The funny look on their faces was priceless when I told them what it was for though. 
And let me know if you have anything on that throttle linkage assembly.
And let me know if you have anything on that throttle linkage assembly.
