S13 Red Top Vs. S13 Black Top - The differences

Post by **Jala47** » Tue Dec 21, 2004 12:04 pm

SpeedRacer1 wrote:
What do you need this info for?

I'm going to look at a 1992 SR with a blown turbo... want to make sure it's really an SR

Post by **dustyk** » Mon Jan 31, 2005 5:57 am

JustinStrife wrote:It's a lie about the S15 tranny being weak. It isn't. A rumor spread by superstreet or one of those magazines.

it's not a Lie, the S15 6 speed is weaker than the SR 5 speed. Ive had friends in japan that broke the 6 speed and switch to the older 5 speeds.

Post by **Onizuka** » Wed Feb 02, 2005 6:12 pm

"Weaker than" does not mean it is a weak transmission in general.

Post by **SyndicateRacerX** » Thu Feb 10, 2005 1:14 am

I got a question about OBDII engines in OBDI cars and visa versa. First are both legal? basicaly i am getting to can i put a S15 6speed in my 1990 240SX? and a friend of mine is also thinking about buying a 96 Teg with a 94 GSR swap. Thanx

Post by **SpeedRacer1** » Thu Feb 10, 2005 11:14 am

First off I am not sure what the hell you just asked.

But SR20DET's are not OBDII. Hence one of the hardest things about legalizing Japanese vehicles made after 96.

Secondly, Japanese spec SR20's are not legal to have in moving vehicles in the US. But in most states NOBODY cares.

Post by **wildacexxx** » Sat Feb 19, 2005 8:58 pm

how many cc's are s15 injectors? i think that would be some good info.

*edit* 480cc btw
Modified by wildacexxx at 12:54 AM 2/20/2005

Post by **B-TownSX** » Sun Feb 20, 2005 8:24 pm

This is what I got from a JDM engine dealer. This is only for the S13 engine. He says that the red top has T25 turbo and the black top has T28 turbo. The manifold are also different, but they both produce the same amount of power.

Post by **nismofly** » Sun Feb 20, 2005 9:12 pm

well hes wrong dont go back to him

Post by **Nicksemianiw** » Fri Feb 25, 2005 4:01 am

Can somone post up a pic of where and what these fins look like.

Post by **SpeedRacer1** » Fri Feb 25, 2005 10:52 am

Post by **Nicksemianiw** » Sat Feb 26, 2005 4:41 pm

Thanks

Post by **own3d** » Fri Mar 04, 2005 7:28 pm

SpeedRacer1 wrote:

red top < maroon top

Post by **Nicksemianiw** » Fri Mar 04, 2005 7:54 pm

own3d wrote:red top < maroon top

Its odd, Some times the redtop valve cover will show up as a flat red, and other times it will look like a very rich red and some very dark red.

Proof V , it also depends on lighting

A flat red

A rich red

A deep red

Post by **ETTInnov04** » Wed Mar 09, 2005 10:40 am

Just go with me here for a sec. Is there any chance those of you with the fin cast heads may really have a blacktop head on your redtop or a blacktop with the redtop valve cover? This was the first I'd heard of red tops with the fins cast on the front. I mean im sure in japan they warp heads or go to the junkyard to find another head to have work done to so they dont have to put their car down. Just a thought.

Also I thought there was a difference in the head design of the red and blacktops. Not between the S13/S14/S15, I know those are different but between the S13's alone?

Post by **SpeedRacer1** » Wed Mar 09, 2005 11:39 am

ETTInnov04 wrote:Just go with me here for a sec. Is there any chance those of you with the fin cast heads may really have a blacktop head on your redtop or a blacktop with the redtop valve cover? This was the first I'd heard of red tops with the fins cast on the front. I mean im sure in japan they warp heads or go to the junkyard to find another head to have work done to so they dont have to put their car down. Just a thought.

Also I thought there was a difference in the head design of the red and blacktops. Not between the S13/S14/S15, I know those are different but between the S13's alone?

No and no. I have seen plenty of redtops with heatsink fins that were very stock and were definately in 1993-1994 180SX's.

The heads are the same except for the fins.

To tell the truth the real difference isnt between the redtop and blacktop S13 engines. Its between the 1995-1996 S13 blacktops and the 1997-1998 Kouki blacktops. The redtop and early blacktop are pretty much the exact same except for the ECU's, O2 sensors, and head fins. But the Kouki S13 SR's have a ton of different stuff on them, none of it makes the engine any better, just different stuff.

Example 1997-1998 S13 blacktops have: S14 Kouki alternators, S14 transmissions, and various other parts like sensors from later 90's model Nissans.

Post by **ETTInnov04** » Thu Mar 10, 2005 7:22 am

ahh good to know thanks!

Post by **Silvia13BT** » Wed Mar 23, 2005 7:32 am

Hi I have a s13 blacktop and how can I know what year it is? Because the 89 driveshaft doesn't fit with the bt transmission. I think is because the bt have a s14 transmission...maybe it's a 97-98 bt?Also, is the s14 driveshaft will fit on the 240sx 89, if I change the lsd of an s14?Thanks for all the response.

Post by **Hijacker** » Fri Mar 25, 2005 1:39 pm

here's a weird question. Did the blacktops have AIV valves, or did they eliminate them like they did on the S14/S15 motors?

Post by **SpeedRacer1** » Fri Mar 25, 2005 2:04 pm

All S13 SR20DET's have the secondary air system. Redtop, blacktop, kouki blacktop.

Post by **dj_lennon_franz** » Sat Apr 02, 2005 10:51 pm

Silvia13BT wrote:Hi I have a s13 blacktop and how can I know what year it is? Because the 89 driveshaft doesn't fit with the bt transmission. I think is because the bt have a s14 transmission...maybe it's a 97-98 bt?Also, is the s14 driveshaft will fit on the 240sx 89, if I change the lsd of an s14?Thanks for all the response.

there are differences in our driveshafts...even the CA and SR driveshafts are different i believe...but the 89-90 driveshaft is slightly short than the 91-93 driveshafts...it also is designed differently where it inserts into the tranny...the head on it is shapped differently...i havent had a CA and SR driveshaft side by side...but the CA looks WAY different than the Zenki 89-90 USDM driveshafts do (my best friend just did a CA swap)

Post by **D1 guy** » Thu Apr 21, 2005 10:50 am

dude the s15 6speeds are weaker. The gears are much closer together and the forks are closer. They can usually only hold about 340whp. Then you gotta rebuild it or buy a sequential or whatever.

Post by **ShadowArtsS13** » Fri Apr 29, 2005 5:33 pm

I also fund out the S13 Blacktop pistons,water pump and oil pickup is better than the S13 redtop.

Post by **SpeedRacer1** » Sat Apr 30, 2005 12:51 am

ShadowArtsS13 wrote:I also fund out the S13 Blacktop pistons,water pump and oil pickup is better than the S13 redtop.

Pistons = There are different pistons on the S13 SR's but its not a redtop/blacktop difference. It is a difference between the 1991-July 1993 S13 SR's, and the August 1993-Dec 1998 S13 SR's. Blacktop S13 SR's came out in Jan 1994. The pistons aren't better, just different.

Water pump = Exact same from 1991-1998, no difference in the production.

Oil pickup = Nissan switched to S14 SR oil pickup in October 1993, so a few S13 redtops got them. They have bigger openings I believe, but this can be remedied by cutting a larger hole in an early S13 SR oil pickup.

Post by **PantherRacer** » Thu Jun 09, 2005 7:15 am

hey I gotta noob type question. Is there any wat to get S14/S15 vvt on an S13 Redtop motor?

I know those honda guys do it all the time, so shouldn't it work on a SR?and if so what do I have to do?

Post by **SpeedRacer1** » Thu Jun 09, 2005 9:02 am

Nissans VTC system and Honda's Vtech are two totally DIFFERENT of technology. The VTC on S14's and S15's is nothing special, just a slight adjustment to give the engine low to mid range torque. Nissan has a system like Vtech, called Neo VVL.

Basically VTC (Valve Timing Control) is nothing special and not worth the effort.

Post by **PantherRacer** » Fri Jun 10, 2005 3:57 am

True, too bad SR20VE's are so hard to find...

Post by **Onizuka** » Fri Jun 24, 2005 7:48 am

Not particularly, sr20ve's can be had for cheaper than a sr20det. Still doesnt change that it would be a major pain to fit the FWD VE head on a RWD block.

Post by **Re_Joshua** » Thu Jun 30, 2005 8:35 am

Another question...my turbo has ".80 a/r" written on it...I cannot find any listing of which motor I have. I know it's the stock turbo that came with it. It's a 180sx black top motor. I know it's the T25 turbo, simple to notice because it's so small. But still cannot figure out exactly which motor it is because of the .80 a/r trim on the turbo.

Post by **SpeedRacer1** » Thu Jun 30, 2005 9:10 am

.80 came on ALL S13 SR20DET's, redtop and blacktop.

Post by **Re_Joshua** » Fri Jul 01, 2005 8:52 pm

The info I've been finding says it has a 0.64 a/r ....

S13 Red Top Vs. S13 Black Top - The differences

Re: (SpeedRacer1)

Re: (JustinStrife)

Re: (wildacexxx)

Re: (SpeedRacer1)

Re: (SpeedRacer1)

Re: (own3d)

Re: (Jala47)

Re: (ETTInnov04)

Re: (SpeedRacer1)

Re: (SpeedRacer1)

Re: (Silvia13BT)

Re: (JustinStrife)

Re: (ShadowArtsS13)

Re: (SpeedRacer1)

Re: (SpeedRacer1)

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