2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

13b NA and 13b Turbo engine differences.

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Old Jan 24, 2006 | 05:31 PM
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13b NA and 13b Turbo engine differences.

Can someone tell me the main difference in these engines? Besides the turbo engine having lower compression?

Thanks
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Old Jan 24, 2006 | 05:45 PM
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oh lord....did you search?

main differences are
-compression(as mentioned)
-turbo motor is 4 port, N/A is 6 port
-power output
-drivetrain
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Old Jan 24, 2006 | 07:09 PM
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how can I lower the compression on my NA and make it boost ready? Will the 13b turbo rotors fit and bolt up?
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Old Jan 24, 2006 | 07:18 PM
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search for a thread "project tina" aaron cake also has a write up on his webpage regarding turboing N/A cars....

to lower the compression ratio in your N/A motor you would need to install the entire rotating assembly from a turbo motor (turbo rotors, e-shaft, counterweights etc.) but it would be easier to do a TII swap....which again has been covered countless times....
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Old Jan 24, 2006 | 07:19 PM
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you might want to search this before people start freaking out on you.And yes it has been covered if you were wondering
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Old Apr 9, 2008 | 02:32 AM
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on the hp? rew?
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Old Apr 9, 2008 | 04:41 AM
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Originally Posted by OnePoint3
how can I lower the compression on my NA and make it boost ready?
You can't.


Will the 13b turbo rotors fit and bolt up?
Only if you take the engine engine apart and put it back together again.


-Ted
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Old Apr 9, 2008 | 05:03 AM
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Originally Posted by RETed
You can't.



Only if you take the engine engine apart and put it back together again.


-Ted

i ******* love your replys!
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Old Apr 9, 2008 | 01:32 PM
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Copied directly from the FAQ:

Can I swap a Turbo engine/Jspec engine/13BT/etc into my Non Turbo?
Yes, check these links:
https://www.rx7club.com/forum/showth...threadid=26647
http://www.rotaryresurrection.com/ro...conversion.htm

How do I add a turbo to my NA 13B?
What Turbo kits can I add onto my non turbo RX-7?
There are no longer kits formally made at the time of this post, however there are companies from time to time that do make available non turbo to Turbo Kits. Because most of these companies stop building the kits, or go out of business in short time, it is impossible to keep active links for them.

Most people that turbo a non turbo make their own kits:
Using the stock TII turbo, exhaust manifold with spacer, NA intakes and NA ECU:
http://www.aaroncake.net/rx-7/naturbo.htm
https://www.rx7club.com/forum/showth...threadid=88540

https://www.rx7club.com/forum/showth...threadid=88758
https://www.rx7club.com/forum/showth...hreadid=124232
http://users2.ev1.net/~ccoutts/turbo..._a_project.htm

Using the stock TII turbo, exhaust manifold, intakes, ECU:
http://forum.teamfc3s.org/showthread.php?t=37694

Turbo-NA Forum:
http://www.aaroncake.net/forum/forum...urbocharged+NA
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