New Member RX-7 Technical Post your first technical questions here, in an easy flame free environment, before jumping into the main technical sections.

Looking to make some N/A Upgrades. A little help mean a lot

Thread Tools
 
Search this Thread
 
Old 06-03-12, 09:59 PM
  #1  
Junior Member
Thread Starter
 
Jyroh's Avatar
 
Join Date: Jan 2012
Location: Riverside
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
CA Looking to make some N/A Upgrades. A little help mean a lot

Well here's the Skinny on the N/a Upgrades thus far, aluminum radiator, aluminum thermostat housing & thermo and silicon hoses. We have had our Fc for about Hmmm.. 4 - 5 months and we want to keep it N/A due to the fact it only has 43,000 miles. So far we have been thinking about Upgrading the Intake system & the Exhaust system. I heard thats all you can really do to a N/A anyways is this True Y'all ?? I'm really hoping there are some Trix or pointers that y'all wouldn't mind sharing with Me in order to upgrade my power ?? Hope to hear from all the rotor heads real Soon! Thanx
Attached Thumbnails Looking to make some N/A Upgrades. A little help mean a lot-rx7-001.jpg   Looking to make some N/A Upgrades. A little help mean a lot-rx7-006.jpg  
Old 08-08-12, 10:39 PM
  #2  
Full Member
 
insanerxpower's Avatar
 
Join Date: Apr 2011
Location: stony plain
Posts: 56
Likes: 0
Received 0 Likes on 0 Posts
Cut a hole on top of the air box for a better air flow. putting a cone filter or anything is useless so why spend that extra money. full exhaust, eliminate the rats nest and air pump and all that crap. vent your hood for better air flow through the engine bay. im sure theres more, but thats what i can think of right now
Old 08-09-12, 02:12 AM
  #3  
Junior Member
 
TheEjectButton's Avatar
 
Join Date: Aug 2012
Location: Northern AZ
Posts: 14
Likes: 0
Received 0 Likes on 0 Posts
Wire your 5th and 6th ports open.
Old 08-09-12, 05:32 AM
  #4  
Junior Member
 
bass2theplace's Avatar
 
Join Date: Jul 2012
Location: new zealand
Posts: 13
Likes: 0
Received 0 Likes on 0 Posts
hey mate, here in nz we do n/a rotaries hard out, the best we find is webber carbs, a 48mm or if you want to get a bit crazier a jetted out one to 51mm. more fuel, then put a k&n filter on top, goes nicely. a decent exhaust will do the trick, do you not want to open it up and port it? a 48mm will do nicely with stock ports.im guessing you have electronic fuel injection? or standard carb?
Old 08-09-12, 08:45 AM
  #5  
Rotary Power

iTrader: (15)
 
wthdidusay82's Avatar
 
Join Date: Sep 2004
Location: Dinwiddie, Va
Posts: 3,706
Received 4 Likes on 4 Posts
nice car very clean, you'll find the biggest power/performance increase from installing a header and catback exhaust if you haven't already.

There are many different upgrades for na's you can upgrade the intake, clutch, and flywheel, get some dtss eliminators as well as some strut bars, get an aftermarket ignition etc.

with a full exhaust and intake you should make close to 180+ hp (since yours is an s5 an s4 would be slightly lower.)
Old 08-09-12, 05:30 PM
  #6  
Full Member
 
insanerxpower's Avatar
 
Join Date: Apr 2011
Location: stony plain
Posts: 56
Likes: 0
Received 0 Likes on 0 Posts
i heard if you keep your 5th and 6th ports open, you loose low end torque. not sure if thats true but, just seen it on another post in here
Old 08-09-12, 05:39 PM
  #7  
Sharp Claws

iTrader: (30)
 
RotaryEvolution's Avatar
 
Join Date: Oct 2003
Location: Central Florida
Posts: 5,107
Likes: 0
Received 41 Likes on 40 Posts
Originally Posted by insanerxpower
i heard if you keep your 5th and 6th ports open, you loose low end torque. not sure if thats true but, just seen it on another post in here
you do, not sure where this misconception comes from that wiring them open makes more power... the car in stock form opens them at 4k RPMs anyways, with them open full time you lose low RPM response.

so lets stop with that rumor already!
Old 08-10-12, 05:00 AM
  #8  
Senior Member

 
rotaryjunkee's Avatar
 
Join Date: Oct 2008
Location: palmetto
Posts: 380
Likes: 0
Received 3 Likes on 2 Posts
I find that a simple tune-up will bring back power that has been lost.
Old 08-10-12, 10:29 AM
  #9  
Theoretical Tinkerer

iTrader: (41)
 
RXSpeed16's Avatar
 
Join Date: Oct 2003
Location: Norcal/Bay Area, CA
Posts: 1,589
Received 46 Likes on 32 Posts
1. Tune-up including making sure the auxiliary ports actuate when they should. Wiring them open is just silly.
2. Open up the exhaust. Cats are very restrictive and kill power.
3. Lightened flywheel. Car will accelerate faster without making more power.
4. GTUs rear end gearing or undersized tires. ^See above.

Other than that, most power mods are relatively high cost for little/unknown gain. Major power mods involve engine disassembly and major porting work.
Old 08-13-12, 01:14 PM
  #10  
Junior Member
 
TheEjectButton's Avatar
 
Join Date: Aug 2012
Location: Northern AZ
Posts: 14
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by insanerxpower
i heard if you keep your 5th and 6th ports open, you loose low end torque. not sure if thats true but, just seen it on another post in here
Yeah you do loose a bit on the bottom but my car really starts pulling at 3k. Whereas before it didn't seem to come alive until about 4500.
Old 08-15-12, 09:12 AM
  #11  
Junior Member
Thread Starter
 
Jyroh's Avatar
 
Join Date: Jan 2012
Location: Riverside
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Awesome, Thanx y'all. I definitely need to let all of this Info marinate, Haha I decided on some coilovers as of now just because i kind of got stuck on the upgrading our rotary. As soon as i install them its back to the engine bay.
Old 08-15-12, 10:34 AM
  #12  
Wanker Club

iTrader: (3)
 
Acroy's Avatar
 
Join Date: Sep 2002
Location: Dallas
Posts: 293
Likes: 0
Received 0 Likes on 0 Posts
Very pretty! congratulations on a VERY nice looking car. My suggestions to make the most, reliable, easy/cheap power from na without opening the motor for port work:

-Leave the stock air pump actuating the 5/6 ports.
-Atkins 5/6 port sleeves ($60)
-leave the stock mechanical fan on there. E-fan is pricey, hard to get one big enough, big load on alternator, and less reliable than stock fan
-Install a CDI ignition, $150 or so, stronger spark, a few more mpg, maybe a few HP.
-Make sure plugs and wires are in good shape
-Full racing beat exhaust will help a lot. If doing it piecemeal, start with a header for the most gain. Buy QUALITY, cheap stuff will rust out.
-Leave the rat's next, ACV, BAC, etc. Clean and adjust them per FSM or how-to’s, replace all the vac lines with silicon. Taking it all off will a) not improve power b) reduce driveability
-Install a bunch of ground wires. Kits are out there, or just buy 2-3ft lengths from Pep Boys and ground motor, trans, frame super well.
-Test voltage to fuel pump (search forum) and rewire if needed
-while you're at it, inspect and replace fuel filter if needed
-drop-in Amsoil air filter in stock airbox
-Consider a SAFC, around $100 used. The stock ignition is pretty strong and the ignition map is very good. FC's run rich stock
-For minor gains, ceramic coat header/wrap intake pipe to reduce underhood temp and keep incoming air slightly cooler
-When all above is done, have a reputable shop tune it. They will generally have to take out 5-20% fuel.
-resist the urge to get big heavy wheels, makes it much slower due to rotating weight. If anything, invest in lightweight 15/16” rims and performance tires
-Suspension: Prothane pro-kit, rear-steer eliminator, Racing Beat bars, etc etc. Endless possibilities. It is a lot of work for some of it though, must have access to press/etc.
-Run 20/50 Castrol GTX dino in the engine, change every 3k max, keep it topped off. Run 1/2oz/gal nice 2stroke oil in the gas. Replace trans fluid with Redline (I have had phenomenal results with Redline smoothing worn trans). See here for benefits of running premix: Protek-R | Pettit Racing Pettit will be happy to sell you fancy stuff, but I’ve not seen evidence that any good 2stroke oil will not have the same result. Pettit does not refine their own, for sure!

Above should get 150hp or so at the wheels

Enjoy the car and take it to Cars and Coffee events

Use the heck out of the forum, esp 2nd gen archive
Old 08-29-12, 11:54 PM
  #13  
7RO
Junior Member
 
7RO's Avatar
 
Join Date: Aug 2012
Location: BC
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
NA Upgrades

Hoping to upgrade my NA as well.
So far it seems like swapping out the rear (diff) gear for one of a higher numerical value is one of the best values. Better acceleration without compromising your engine's reliability.
Old 11-19-12, 03:01 AM
  #14  
Junior Member
Thread Starter
 
Jyroh's Avatar
 
Join Date: Jan 2012
Location: Riverside
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Wow Acroy! Thanx. What a healthy amount of info i have just received, v e r y much appreciated thanx again. Can't wait now to get back to the 13b.

Well friends since upgrading to some new Coilovers i have recently also purchased a full set of Tll brake cylinders which are getting powder coated (red) plus the needed rebuilt kits. All fresh rotors etc. To go along with the setup. Also my girl as gotten installed a little something,something in the interior part of the Seven, I'll let y'all take a good look for yourself's Lol


Looking to make some N/A Upgrades. A little help mean a lot-forumrunner_20121119_005917.jpg



Looking to make some N/A Upgrades. A little help mean a lot-forumrunner_20121119_005339.jpg



Looking to make some N/A Upgrades. A little help mean a lot-forumrunner_20121119_005633.jpg



Looking to make some N/A Upgrades. A little help mean a lot-forumrunner_20121119_005306.jpg



Looking to make some N/A Upgrades. A little help mean a lot-forumrunner_20121119_005325.jpg
Old 11-19-12, 03:07 AM
  #15  
Junior Member
Thread Starter
 
Jyroh's Avatar
 
Join Date: Jan 2012
Location: Riverside
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
7RO i definitely want to upgrade to the LSD. Have you gotten the chance to change youe diff ?
Old 11-19-12, 03:09 AM
  #16  
Rotary Enthusiast

iTrader: (19)
 
midnightbluefc's Avatar
 
Join Date: Mar 2008
Location: 805
Posts: 1,100
Received 2 Likes on 2 Posts
k&n oem drop in filter header back exhaust(Rb is quietest) for now for power
Old 11-19-12, 03:17 AM
  #17  
Junior Member
Thread Starter
 
Jyroh's Avatar
 
Join Date: Jan 2012
Location: Riverside
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by midnightbluefc
k&n oem drop in filter header back exhaust(Rb is quietest) for now for power
Yeah I'm totally upgrading to a full exhaust next month.. I'm thinking corksport header & racepipe, etc.. as far as the k&n drop in goes. What do you think about a intake setup with the k&n cones?? Any difference.. or just for show?

Last edited by Jyroh; 11-19-12 at 03:21 AM.
Old 11-19-12, 01:42 PM
  #18  
Don't Cross The Streams..

iTrader: (3)
 
Rotor_Venom08's Avatar
 
Join Date: Apr 2009
Location: Houston, TX
Posts: 842
Likes: 0
Received 0 Likes on 0 Posts
nice steering wheel
Old 11-19-12, 01:56 PM
  #19  
Senior Member

iTrader: (1)
 
MrGoodnight's Avatar
 
Join Date: Feb 2010
Location: Tacoma Washington
Posts: 620
Received 3 Likes on 3 Posts
I want your dash carpet!
Old 11-19-12, 02:22 PM
  #20  
Junior Member
 
liquidme's Avatar
 
Join Date: Nov 2012
Location: sacramento
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
take out ur motor fan and get an eletric fan =P ur car wwould gain like 5-10 hp =P
Old 11-19-12, 03:43 PM
  #21  
Retired Moderator, RIP

iTrader: (142)
 
misterstyx69's Avatar
 
Join Date: Sep 2005
Location: Smiths Falls.(near Ottawa!.Mapquest IT!)
Posts: 25,581
Likes: 0
Received 131 Likes on 114 Posts
Originally Posted by liquidme
take out ur motor fan and get an eletric fan =P ur car wwould gain like 5-10 hp =P
Parasitic drag is so over rated.
Old 11-19-12, 06:27 PM
  #22  
Junior Member
Thread Starter
 
Jyroh's Avatar
 
Join Date: Jan 2012
Location: Riverside
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by liquidme
take out ur motor fan and get an eletric fan =P ur car wwould gain like 5-10 hp =P
I did you can see it in the picture above.. ford Taurus electric fan wirh relay etc..
Old 11-19-12, 11:00 PM
  #23  
Banned. I got OWNED!!!
 
major rotor's Avatar
 
Join Date: Nov 2012
Posts: 52
Likes: 0
Received 0 Likes on 0 Posts
BRIDGE PORT IT AND PUT A COLD AIR INTAKE AND A CAT BACK EXHAUST ON IT.(sorry for caps)
Old 11-20-12, 12:34 PM
  #24  
Junior Member
Thread Starter
 
Jyroh's Avatar
 
Join Date: Jan 2012
Location: Riverside
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Major rotor, It comes with stock cold air intake... bridge port huh? Hmmm.. not sure what this is yet.
Old 11-20-12, 01:20 PM
  #25  
Don't Cross The Streams..

iTrader: (3)
 
Rotor_Venom08's Avatar
 
Join Date: Apr 2009
Location: Houston, TX
Posts: 842
Likes: 0
Received 0 Likes on 0 Posts
TX

honestly best bang fort your buck is an exhaust.


Quick Reply: Looking to make some N/A Upgrades. A little help mean a lot



All times are GMT -5. The time now is 05:17 AM.