S13/S14 engine compatibility - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

*LanceS13* · 02-21-2002, 12:41 AM

Not to say I've decided to turbo the KA, just exploring my options.
Say, I piece together a good turbo set and run mild boost (5-6psi) on my 156K mile S13 KA.  In the meantime, I buy a newer, low mileage S14 KA and build it up (pistons, rods, etc.).  Are there any significant differences between the two forms of this engine that might cause problems when trying to transfer the turbo system  components...like turbo exhaust manifold, differences in intake manifold, etc.   Why does the S14 redline at 6500?  Could I use my tach and still rev to 7K safely?  Are there any other differences?

drift freaq · 02-21-2002, 02:19 AM

cams?? that would be my guess different cams exhibit different rev caracteristics.
significant differrences?
Most likely not . there may be small differences in the head casting. I know that the S14 smog setup under the hood leaves a lot more room without having to move stuff for the Turbo.
I know S14's came with OBDII which is a really picky ECU setup compared to our S13's.
I put a 98 5 speed trans in my car when I did my auto to 5 speed swap . I had to put in the earlier S13 5 speed speed sensor because the later one did not send out the right pulse and my speedo was off?
so there could be a couple of little gremlins but nothing major IMHO .

*LanceS13* · 02-21-2002, 01:34 PM

I know the cams are different, but could the motor safely rev the extra 500rpm since the  turbo would likely shift the  power  band up?
When you  say  there may be small differences in head casting, would they  be significant enough to cause  any interference when swapping the turbo manifold?
I thought only '97-'98 came with OBDII.  Could I just use the S13 ecu?

drift freaq · 02-21-2002, 10:25 PM

use the S13 ECU , S14 ECU is OBDII and they started that in 95. even thought it was not mandatory till 97. As far swapping Turbo manifolds it all depends on who designs it. I know of one person who got a custom manifold for a S13 KADE and supposed had to grind a little to go on his S14 head but that was a custom manifold not something like a JGS or revhard.
As far as reving the extra 500 rpm that depends on fuel delivery , ECU settings and Cams.

*LanceS13* · 02-21-2002, 11:14 PM

thanks.
</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE">Quote: from drift freaq on 11:25 pm on Feb. 21, 2002
As far as reving the extra 500 rpm that depends on fuel delivery , ECU settings and Cams.</td></tr></table><span id='postcolor'>
The S13 ecu should do all of this (except  for cams) to keep the 7K redline......or just send it off to JWT and let them do it since it would have to be done anyway eventually in order run any decent amount of boost.

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

02-21-2002, 12:41 AM	#1
LanceS13 AutoX Junkie Join Date: Jun 2001 Location: MS Age: 43 Posts: 2,044 Trader Rating: (0) Feedback Score: 0 reviews	Not to say I've decided to turbo the KA, just exploring my options. Say, I piece together a good turbo set and run mild boost (5-6psi) on my 156K mile S13 KA.  In the meantime, I buy a newer, low mileage S14 KA and build it up (pistons, rods, etc.).  Are there any significant differences between the two forms of this engine that might cause problems when trying to transfer the turbo system  components...like turbo exhaust manifold, differences in intake manifold, etc.   Why does the S14 redline at 6500?  Could I use my tach and still rev to 7K safely?  Are there any other differences?

02-21-2002, 02:19 AM	#2
drift freaq R.I.P. Aya, always love Join Date: Nov 2001 Location: Los Feliz/Hollywood Posts: 18,564 Trader Rating: (215) Rides Gallery: drift freaq Feedback Score: 215 reviews	cams?? that would be my guess different cams exhibit different rev caracteristics. significant differrences? Most likely not . there may be small differences in the head casting. I know that the S14 smog setup under the hood leaves a lot more room without having to move stuff for the Turbo. I know S14's came with OBDII which is a really picky ECU setup compared to our S13's. I put a 98 5 speed trans in my car when I did my auto to 5 speed swap . I had to put in the earlier S13 5 speed speed sensor because the later one did not send out the right pulse and my speedo was off? so there could be a couple of little gremlins but nothing major IMHO .

02-21-2002, 01:34 PM	#3
LanceS13 AutoX Junkie Join Date: Jun 2001 Location: MS Age: 43 Posts: 2,044 Trader Rating: (0) Feedback Score: 0 reviews	I know the cams are different, but could the motor safely rev the extra 500rpm since the  turbo would likely shift the  power  band up? When you  say  there may be small differences in head casting, would they  be significant enough to cause  any interference when swapping the turbo manifold? I thought only '97-'98 came with OBDII.  Could I just use the S13 ecu?

02-21-2002, 10:25 PM	#4
drift freaq R.I.P. Aya, always love Join Date: Nov 2001 Location: Los Feliz/Hollywood Posts: 18,564 Trader Rating: (215) Rides Gallery: drift freaq Feedback Score: 215 reviews	use the S13 ECU , S14 ECU is OBDII and they started that in 95. even thought it was not mandatory till 97. As far swapping Turbo manifolds it all depends on who designs it. I know of one person who got a custom manifold for a S13 KADE and supposed had to grind a little to go on his S14 head but that was a custom manifold not something like a JGS or revhard. As far as reving the extra 500 rpm that depends on fuel delivery , ECU settings and Cams.

02-21-2002, 11:14 PM	#5
LanceS13 AutoX Junkie Join Date: Jun 2001 Location: MS Age: 43 Posts: 2,044 Trader Rating: (0) Feedback Score: 0 reviews	thanks. </span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE">Quote: from drift freaq on 11:25 pm on Feb. 21, 2002 As far as reving the extra 500 rpm that depends on fuel delivery , ECU settings and Cams.</td></tr></table><span id='postcolor'> The S13 ecu should do all of this (except  for cams) to keep the 7K redline......or just send it off to JWT and let them do it since it would have to be done anyway eventually in order run any decent amount of boost.