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Author Topic: Best way to gain more HP out of an 13B NA  (Read 5616 times)

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Offline ~Groll69~

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Best way to gain more HP out of an 13B NA
« on: September 14, 2010, 11:28:51 AM »
What improvements can i do with a 13B NA to gain more horsepower from it.  I am debating about running a supercharger on it, our trying to find some other simple way to improve the horsepower output.  Most of the rats nest is gone and i am lacking the vaccum to my secondary ports to open them properly.  I don't want to go crazy with it, but i do want to just give it more get up and go fun.  Any ideas or suggestions?
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Offline ITSWILL

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Re: Best way to gain more HP out of an 13B NA
« Reply #1 on: September 14, 2010, 10:52:24 PM »
A turbo, or even better a turbo engine swap.

Its really not that expensive, and a turbo engine swap could probably be done for less than a supercharger kit.

As fun as a NA rotary can be, they are damn slow.
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Offline ~Groll69~

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Re: Best way to gain more HP out of an 13B NA
« Reply #2 on: September 16, 2010, 08:21:34 AM »
I would need a good turbo engine and transmision to swap in along with and ecu.  I don't have that just laying around.  I am just trying to get the most out of my NA.
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Offline ITSWILL

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Re: Best way to gain more HP out of an 13B NA
« Reply #3 on: September 16, 2010, 01:35:00 PM »
Porting is the only way to see a significant power increase from a na.  I don't know what you have just lying around but my guess is it doesnt include a header back exhaust system, porting templates, and a rebuild kit.  The turbo swap is the cheapest and easiest way to see a noticeable power increase.
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Offline S4wdwcker

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Re: Best way to gain more HP out of an 13B NA
« Reply #4 on: September 28, 2010, 08:12:08 AM »
a simple way to get a lil more power is to get the 5th and 6th ports working and sleeve them. pineapple racing makes sleeve inserts and you'll get a little power gain from it
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Offline Man_In_Black

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Re: Best way to gain more HP out of an 13B NA
« Reply #5 on: September 29, 2010, 07:43:20 PM »
NOS the rotarys handel juice well a 75 dry will give you good power but its not streetable.
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Offline ITSWILL

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Re: Best way to gain more HP out of an 13B NA
« Reply #6 on: October 01, 2010, 04:33:49 PM »
Why wouldn't it be streetable?  Because it is a dry shot? I would surely do a wet shot.  Rotaries really don't like going lean.
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Offline Kentetsu

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Re: Best way to gain more HP out of an 13B NA
« Reply #7 on: October 04, 2010, 10:46:15 AM »
1.  Get those 5th/6th ports working again.  That will make a substantial difference in low end torque.
2.  Header and free flowing exhaust system.
3.  Ignition system upgrade.

Drive that until it blows up, then replace it with a TII motor.  :)
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Offline ~Groll69~

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Re: Best way to gain more HP out of an 13B NA
« Reply #8 on: October 06, 2010, 08:27:16 AM »
How can i get the 5th and 6th ports working again?  i don't have a connection on my exhuast for back pressure to activate them?  Is there another way to rig them to open when secondaries kick in?
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Offline ITSWILL

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Re: Best way to gain more HP out of an 13B NA
« Reply #9 on: October 06, 2010, 10:09:14 AM »
Im sure there is a clever way to operate them via the use of a solenoid actuated by a signal from the secondary injectors.
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Offline awfc3s

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Re: Best way to gain more HP out of an 13B NA
« Reply #10 on: October 06, 2010, 10:34:58 AM »
Rich ive got an rpm activated switch that I was using on my na auxiliary ports. Worked awesome plus its msd ooooooooo: )
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Offline ~Groll69~

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Re: Best way to gain more HP out of an 13B NA
« Reply #11 on: October 06, 2010, 11:25:08 AM »
sounds like something that i definitly need.
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Offline ~Groll69~

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Re: Best way to gain more HP out of an 13B NA
« Reply #12 on: October 21, 2010, 07:11:10 AM »
Can i get that off of you to install on my car?

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Rich ive got an rpm activated switch that I was using on my na auxiliary ports. Worked awesome plus its msd ooooooooo: )
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"Long Live Rotary"

An RX-7 is like having a slut as a gf! She will love you, but she will also screw around with the guy at the parts store, most of the local cops, your insurance agent, your apex seals, your bank account and your credit card!!!

Offline awfc3s

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Re: Best way to gain more HP out of an 13B NA
« Reply #13 on: October 21, 2010, 11:40:58 AM »
Ya. I just need to find it for you.
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Offline ~Groll69~

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Re: Best way to gain more HP out of an 13B NA
« Reply #14 on: October 21, 2010, 12:03:57 PM »
thanks.  Let me know when you find it
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"Long Live Rotary"

An RX-7 is like having a slut as a gf! She will love you, but she will also screw around with the guy at the parts store, most of the local cops, your insurance agent, your apex seals, your bank account and your credit card!!!
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