1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

SR Nikki Add-On options... Need Input Please

Thread Tools
 
Search this Thread
 
Old Oct 26, 2011 | 06:44 PM
  #1  
CobraStngSVT's Avatar
Thread Starter
Team SR
Tenured Member 05 Years
 
Joined: Sep 2005
Posts: 202
Likes: 0
From: Loxahatchee, FL
SR Nikki Add-On options... Need Input Please

I would like some ideas/input for some add-on options you guys want. So far we are offering: Powder Coating, -AN modification to your fuel inlet pipe, in-line fuel filter and 90 degree angle.

Any other ideas for "options" that we don't already offer? Thanks!!!
Reply
Old Oct 26, 2011 | 07:29 PM
  #2  
DarkDrakeX's Avatar
RX-7 NUT
Tenured Member 15 Years
 
Joined: Aug 2007
Posts: 444
Likes: 1
From: California
Umm idk how popular this will be or if you guys could do it but intake porting to match the higher flow of the nikki. Per sterling the stock intake limits the carb.
Reply
Old Oct 26, 2011 | 07:30 PM
  #3  
PercentSevenC's Avatar
I need a new user title
Tenured Member 10 Years
 
Joined: Oct 2005
Posts: 2,646
Likes: 1
From: Yaizu, Japan
How about boost-prepping?
Reply
Old Oct 26, 2011 | 07:33 PM
  #4  
CobraStngSVT's Avatar
Thread Starter
Team SR
Tenured Member 05 Years
 
Joined: Sep 2005
Posts: 202
Likes: 0
From: Loxahatchee, FL
Originally Posted by DarkDrakeX
Umm idk how popular this will be or if you guys could do it but intake porting to match the higher flow of the nikki. Per sterling the stock intake limits the carb.
I've got a few spare intakes laying around, Let me see what I can do to come up with something to compliment our carb. Great idea!!! Thanks.
Reply
Old Oct 26, 2011 | 07:34 PM
  #5  
CobraStngSVT's Avatar
Thread Starter
Team SR
Tenured Member 05 Years
 
Joined: Sep 2005
Posts: 202
Likes: 0
From: Loxahatchee, FL
Originally Posted by PercentSevenC
How about boost-prepping?
I'd be happy to offer a "boost prepped" model. What other modifications would be needed for it besides the mods we are already doing?
Reply
Old Oct 26, 2011 | 08:00 PM
  #6  
PercentSevenC's Avatar
I need a new user title
Tenured Member 10 Years
 
Joined: Oct 2005
Posts: 2,646
Likes: 1
From: Yaizu, Japan
Originally Posted by CobraStngSVT
I'd be happy to offer a "boost prepped" model. What other modifications would be needed for it besides the mods we are already doing?
bad 83 posted how to do the boost-prepping here. I don't know the details of how yours are set up, but chances are you already do most of that.
Reply
Old Oct 26, 2011 | 08:16 PM
  #7  
cshaw07's Avatar
I need a cheaper hobby...
Tenured Member 05 Years
iTrader: (14)
 
Joined: Aug 2010
Posts: 1,416
Likes: 5
From: East Palestine, Oh
Awesome! I started that thread
Reply
Old Oct 26, 2011 | 09:11 PM
  #8  
CobraStngSVT's Avatar
Thread Starter
Team SR
Tenured Member 05 Years
 
Joined: Sep 2005
Posts: 202
Likes: 0
From: Loxahatchee, FL
Originally Posted by PercentSevenC
bad 83 posted how to do the boost-prepping here. I don't know the details of how yours are set up, but chances are you already do most of that.
Hmm... good read. I'll start looking into properly sealing it up and closing the air circuit to trick the carb into reading the same pressures.
Reply
Old Oct 26, 2011 | 10:12 PM
  #9  
LizardFC's Avatar
Rotary Supremacist
Tenured Member: 20 Years
iTrader: (1)
 
Joined: Jan 2004
Posts: 2,910
Likes: 3
From: Maryville, TN
Originally Posted by CobraStngSVT
Hmm... good read. I'll start looking into properly sealing it up and closing the air circuit to trick the carb into reading the same pressures.
I'll be boost prepping mine soon. I'd be happy to share anything I learn from it.
Reply
Old Oct 26, 2011 | 10:16 PM
  #10  
CobraStngSVT's Avatar
Thread Starter
Team SR
Tenured Member 05 Years
 
Joined: Sep 2005
Posts: 202
Likes: 0
From: Loxahatchee, FL
Originally Posted by LizardFC
I'll be boost prepping mine soon. I'd be happy to share anything I learn from it.
that would be awesome, let me know what materials you use and so forth... Thanks!
Reply
Old Oct 26, 2011 | 10:45 PM
  #11  
Oneiros's Avatar
Senior Member
 
Joined: Nov 2009
Posts: 346
Likes: 2
From: Australia
Thinned throttle shafts definitely. This is a really worthwhile mod. Add some button head screws if you can find them.

Considering that all the tension on the primary throttle shaft is on one side, I don't see how bending across the thinned middle section of the shaft could be a big issue. All you have on the opposite side is the OMP linkage which really doesn't provide much resistance. As long as you ensure that the stopper on the OMP linkage doesn't hit it's WOT stop mark before the stopper on the secondary tab (assuming you have mech secondaries) then there shouldn't be bending at WOT either. Those are my thoughts anyway.

Choke wise you could do a standard removal and just leave the fast idle setup like Sterling did.

Maybe a vacuum secondaries option for people who are opposed to mech secondaries.
Reply
Old Oct 27, 2011 | 07:37 AM
  #12  
CobraStngSVT's Avatar
Thread Starter
Team SR
Tenured Member 05 Years
 
Joined: Sep 2005
Posts: 202
Likes: 0
From: Loxahatchee, FL
Originally Posted by Oneiros
Thinned throttle shafts definitely. This is a really worthwhile mod. Add some button head screws if you can find them.

Considering that all the tension on the primary throttle shaft is on one side, I don't see how bending across the thinned middle section of the shaft could be a big issue. All you have on the opposite side is the OMP linkage which really doesn't provide much resistance. As long as you ensure that the stopper on the OMP linkage doesn't hit it's WOT stop mark before the stopper on the secondary tab (assuming you have mech secondaries) then there shouldn't be bending at WOT either. Those are my thoughts anyway.

Choke wise you could do a standard removal and just leave the fast idle setup like Sterling did.

Maybe a vacuum secondaries option for people who are opposed to mech secondaries.
nice, will do!
Reply
Old Oct 27, 2011 | 07:52 PM
  #13  
CobraStngSVT's Avatar
Thread Starter
Team SR
Tenured Member 05 Years
 
Joined: Sep 2005
Posts: 202
Likes: 0
From: Loxahatchee, FL
I finalized my mech. secondary design tonight... and the good news is it's completely reversable in seconds. One screw, flip a bracket around and your back to vacuum if you wish.
Reply
Old Oct 27, 2011 | 10:12 PM
  #14  
jgrewe's Avatar
GET OFF MY LAWN
Tenured Member: 20 Years
iTrader: (1)
 
Joined: Feb 2005
Posts: 2,837
Likes: 2
From: Fla.
Trim off the booster venturi's arm that extends across the throat, smooth out the casting lines on them as well. Narrow the side of the arm that is left and give it an airfoil cross section.

None of this is IT legal, but my flowbench says it works great.
Reply
Old Oct 27, 2011 | 11:02 PM
  #15  
CobraStngSVT's Avatar
Thread Starter
Team SR
Tenured Member 05 Years
 
Joined: Sep 2005
Posts: 202
Likes: 0
From: Loxahatchee, FL
Originally Posted by jgrewe
Trim off the booster venturi's arm that extends across the throat, smooth out the casting lines on them as well. Narrow the side of the arm that is left and give it an airfoil cross section.

None of this is IT legal, but my flowbench says it works great.
Nice! I was already removing the arms. Where in florida are you?
Reply
Old Oct 27, 2011 | 11:38 PM
  #16  
jgrewe's Avatar
GET OFF MY LAWN
Tenured Member: 20 Years
iTrader: (1)
 
Joined: Feb 2005
Posts: 2,837
Likes: 2
From: Fla.
St Pete Bch
Reply
Old Oct 28, 2011 | 05:01 AM
  #17  
Oneiros's Avatar
Senior Member
 
Joined: Nov 2009
Posts: 346
Likes: 2
From: Australia
What are your thoughts on trimming the OMP nozzles back. I know Sterling does it. After studying the design, I think that it's necessary for the nozzles to almost touch the outside of the boosters, so that oil is mixed in with the fuel from the AP, and doesn't just dribble down the sides of the barrels + manifold.
Reply
Old Oct 28, 2011 | 08:51 AM
  #18  
SaturnHKS's Avatar
Ex-lion tamer
Tenured Member 20 Years
 
Joined: Jun 2002
Posts: 120
Likes: 0
From: San Francisco, CA
It would be really cool for broke college students like myself if you offered a barebones machine service; i.e. I disassemble my carb and send you the parts that are machined as part of the modification, then you send those back to me and I put it all back together myself. Less labor and turnaround time for you and many precious Taco Bell burritos saved for me.
Reply
Old Oct 28, 2011 | 09:01 AM
  #19  
CobraStngSVT's Avatar
Thread Starter
Team SR
Tenured Member 05 Years
 
Joined: Sep 2005
Posts: 202
Likes: 0
From: Loxahatchee, FL
Originally Posted by SaturnHKS
It would be really cool for broke college students like myself if you offered a barebones machine service; i.e. I disassemble my carb and send you the parts that are machined as part of the modification, then you send those back to me and I put it all back together myself. Less labor and turnaround time for you and many precious Taco Bell burritos saved for me.
I hadn't thought about that, I would totally be willing. Thanks!
Reply
Old Oct 28, 2011 | 09:04 AM
  #20  
CobraStngSVT's Avatar
Thread Starter
Team SR
Tenured Member 05 Years
 
Joined: Sep 2005
Posts: 202
Likes: 0
From: Loxahatchee, FL
Originally Posted by Oneiros
What are your thoughts on trimming the OMP nozzles back. I know Sterling does it. After studying the design, I think that it's necessary for the nozzles to almost touch the outside of the boosters, so that oil is mixed in with the fuel from the AP, and doesn't just dribble down the sides of the barrels + manifold.
That's a good one.... Well, what is the benefit from better mixing/atomization of the oil? At the end of the day, once the oil gets into the housings isn't it going to disperse anyway? It isn't like fuel where you need the atomization for air/fuel ratio balance and power. Thoughts?
Reply
Old Oct 28, 2011 | 11:25 AM
  #21  
Jingkun's Avatar
Your brain on triangles..
Tenured Member 05 Years
iTrader: (4)
 
Joined: Dec 2010
Posts: 379
Likes: 0
From: Cedar Park, Texas
I wouldn't think that there is anyway that the fuel would be guaranteed to disperse evenly inside the housings once it gets going. I could just be a paranoia thing for me but I would think that it could cause serious seal on housing problems if it happens to not disperse to one side. That could just be me though.
Reply
Old Oct 28, 2011 | 11:58 AM
  #22  
CobraStngSVT's Avatar
Thread Starter
Team SR
Tenured Member 05 Years
 
Joined: Sep 2005
Posts: 202
Likes: 0
From: Loxahatchee, FL
Originally Posted by Jingkun
I wouldn't think that there is anyway that the fuel would be guaranteed to disperse evenly inside the housings once it gets going. I could just be a paranoia thing for me but I would think that it could cause serious seal on housing problems if it happens to not disperse to one side. That could just be me though.
Did you mean oil in your statement instead of fuel?
Reply
Old Oct 28, 2011 | 01:20 PM
  #23  
Jingkun's Avatar
Your brain on triangles..
Tenured Member 05 Years
iTrader: (4)
 
Joined: Dec 2010
Posts: 379
Likes: 0
From: Cedar Park, Texas
Originally Posted by CobraStngSVT
Did you mean oil in your statement instead of fuel?
Yes, I don't knoe what happened there.
Reply
Old Oct 28, 2011 | 02:30 PM
  #24  
Kentetsu's Avatar
Lives on the Forum
Tenured Member 15 Years
 
Joined: Jun 2004
Posts: 11,359
Likes: 14
From: Grand Rapids Michigan
Did you mean Know in your statement instead of Knoe?
Reply
Old Oct 28, 2011 | 02:32 PM
  #25  
CobraStngSVT's Avatar
Thread Starter
Team SR
Tenured Member 05 Years
 
Joined: Sep 2005
Posts: 202
Likes: 0
From: Loxahatchee, FL
Originally Posted by Kentetsu
Did you mean Know in your statement instead of Knoe?
LOL
Reply



All times are GMT -5. The time now is 02:26 AM.