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 10-26-11, 06:44 PM
  #1  
Team SR

Thread Starter
 
CobraStngSVT's Avatar
 
Join Date: Sep 2005
Location: Loxahatchee, FL
Posts: 202
Likes: 0
Received 0 Likes on 0 Posts
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!!!
Old 10-26-11, 07:29 PM
  #2  
RX-7 NUT

 
DarkDrakeX's Avatar
 
Join Date: Aug 2007
Location: California
Posts: 444
Likes: 0
Received 1 Like on 1 Post
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.
Old 10-26-11, 07:30 PM
  #3  
I need a new user title

 
PercentSevenC's Avatar
 
Join Date: Oct 2005
Location: Yaizu, Japan
Posts: 2,646
Likes: 0
Received 0 Likes on 0 Posts
How about boost-prepping?
Old 10-26-11, 07:33 PM
  #4  
Team SR

Thread Starter
 
CobraStngSVT's Avatar
 
Join Date: Sep 2005
Location: Loxahatchee, FL
Posts: 202
Likes: 0
Received 0 Likes on 0 Posts
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.
Old 10-26-11, 07:34 PM
  #5  
Team SR

Thread Starter
 
CobraStngSVT's Avatar
 
Join Date: Sep 2005
Location: Loxahatchee, FL
Posts: 202
Likes: 0
Received 0 Likes on 0 Posts
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?
Old 10-26-11, 08:00 PM
  #6  
I need a new user title

 
PercentSevenC's Avatar
 
Join Date: Oct 2005
Location: Yaizu, Japan
Posts: 2,646
Likes: 0
Received 0 Likes on 0 Posts
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.
Old 10-26-11, 08:16 PM
  #7  
I need a cheaper hobby...

iTrader: (14)
 
cshaw07's Avatar
 
Join Date: Aug 2010
Location: East Palestine, Oh
Posts: 1,416
Likes: 0
Received 3 Likes on 3 Posts
Awesome! I started that thread
Old 10-26-11, 09:11 PM
  #8  
Team SR

Thread Starter
 
CobraStngSVT's Avatar
 
Join Date: Sep 2005
Location: Loxahatchee, FL
Posts: 202
Likes: 0
Received 0 Likes on 0 Posts
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.
Old 10-26-11, 10:12 PM
  #9  
Rotary Supremacist

iTrader: (1)
 
LizardFC's Avatar
 
Join Date: Jan 2004
Location: Maryville, TN
Posts: 2,909
Received 1 Like on 1 Post
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.
Old 10-26-11, 10:16 PM
  #10  
Team SR

Thread Starter
 
CobraStngSVT's Avatar
 
Join Date: Sep 2005
Location: Loxahatchee, FL
Posts: 202
Likes: 0
Received 0 Likes on 0 Posts
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!
Old 10-26-11, 10:45 PM
  #11  
Senior Member
 
Oneiros's Avatar
 
Join Date: Nov 2009
Location: Australia
Posts: 346
Likes: 0
Received 1 Like on 1 Post
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.
Old 10-27-11, 07:37 AM
  #12  
Team SR

Thread Starter
 
CobraStngSVT's Avatar
 
Join Date: Sep 2005
Location: Loxahatchee, FL
Posts: 202
Likes: 0
Received 0 Likes on 0 Posts
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!
Old 10-27-11, 07:52 PM
  #13  
Team SR

Thread Starter
 
CobraStngSVT's Avatar
 
Join Date: Sep 2005
Location: Loxahatchee, FL
Posts: 202
Likes: 0
Received 0 Likes on 0 Posts
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.
Old 10-27-11, 10:12 PM
  #14  
GET OFF MY LAWN

iTrader: (1)
 
jgrewe's Avatar
 
Join Date: Feb 2005
Location: Fla.
Posts: 2,837
Likes: 0
Received 2 Likes on 2 Posts
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.
Old 10-27-11, 11:02 PM
  #15  
Team SR

Thread Starter
 
CobraStngSVT's Avatar
 
Join Date: Sep 2005
Location: Loxahatchee, FL
Posts: 202
Likes: 0
Received 0 Likes on 0 Posts
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?
Old 10-27-11, 11:38 PM
  #16  
GET OFF MY LAWN

iTrader: (1)
 
jgrewe's Avatar
 
Join Date: Feb 2005
Location: Fla.
Posts: 2,837
Likes: 0
Received 2 Likes on 2 Posts
St Pete Bch
Old 10-28-11, 05:01 AM
  #17  
Senior Member
 
Oneiros's Avatar
 
Join Date: Nov 2009
Location: Australia
Posts: 346
Likes: 0
Received 1 Like on 1 Post
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.
Old 10-28-11, 08:51 AM
  #18  
Ex-lion tamer

 
SaturnHKS's Avatar
 
Join Date: Jun 2002
Location: San Francisco, CA
Posts: 120
Likes: 0
Received 0 Likes on 0 Posts
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.
Old 10-28-11, 09:01 AM
  #19  
Team SR

Thread Starter
 
CobraStngSVT's Avatar
 
Join Date: Sep 2005
Location: Loxahatchee, FL
Posts: 202
Likes: 0
Received 0 Likes on 0 Posts
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!
Old 10-28-11, 09:04 AM
  #20  
Team SR

Thread Starter
 
CobraStngSVT's Avatar
 
Join Date: Sep 2005
Location: Loxahatchee, FL
Posts: 202
Likes: 0
Received 0 Likes on 0 Posts
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?
Old 10-28-11, 11:25 AM
  #21  
Your brain on triangles..

iTrader: (4)
 
Jingkun's Avatar
 
Join Date: Dec 2010
Location: Cedar Park, Texas
Posts: 379
Likes: 0
Received 0 Likes on 0 Posts
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.
Old 10-28-11, 11:58 AM
  #22  
Team SR

Thread Starter
 
CobraStngSVT's Avatar
 
Join Date: Sep 2005
Location: Loxahatchee, FL
Posts: 202
Likes: 0
Received 0 Likes on 0 Posts
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?
Old 10-28-11, 01:20 PM
  #23  
Your brain on triangles..

iTrader: (4)
 
Jingkun's Avatar
 
Join Date: Dec 2010
Location: Cedar Park, Texas
Posts: 379
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by CobraStngSVT
Did you mean oil in your statement instead of fuel?
Yes, I don't knoe what happened there.
Old 10-28-11, 02:30 PM
  #24  
Lives on the Forum

 
Kentetsu's Avatar
 
Join Date: Jun 2004
Location: Grand Rapids Michigan
Posts: 11,359
Received 14 Likes on 11 Posts
Did you mean Know in your statement instead of Knoe?
Old 10-28-11, 02:32 PM
  #25  
Team SR

Thread Starter
 
CobraStngSVT's Avatar
 
Join Date: Sep 2005
Location: Loxahatchee, FL
Posts: 202
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Kentetsu
Did you mean Know in your statement instead of Knoe?
LOL


Quick Reply: SR Nikki Add-On options... Need Input Please



All times are GMT -5. The time now is 04:49 PM.