SR20..what is the difference. .?

[Z32Guy]

I'm going to be buying an SR20 soon. And I just wanted to know what the black top and redtop means. What is the difference in the two? And are their other color topped named engines? lol =)..Are the color names just the colors of the covers? Thanks, and sorry for the noob question. .

[Xdisaster240sX]

SEARCH! This topic has been covered 1 Bajillion times. Click the search button or google it.

Oh, and welcome to Nico.

Here...Now I feel bad. zerothread?id=59346

[simmode1]

[S13Joe]

Red means it explodes.

[Xdisaster240sX]

You dont want a 240...Their for saps.

[Mon0xide]

red top is for the s13 black is for the s14

[Brandon1605]

In all fairness, that topic linked isnt that clear on the differences...

[Xdisaster240sX]

ok sorry...The red top has a red top and the black top has a black. better?

[moso240]

the Redtop ( red motor) was built esspecially for race wars in the fast and furious...the black top on the other hand ( black valve cover) was built for all the poor people in japan who couldnt afford the redtop since racewars, redtop SR20 were pulling such a premium
Modified by moso240 at 8:27 PM 5/4/2009

[Hoffman5982]

red top is for the s13 black is for the s14

wrong! s14 had notch top. redtop is from a 90-93 s13 and black top is from 94-98 s13.i may be wrong on the years but the only real difference is the age and valve cover color

[urcaptnspeaking]

wow there hasnt been one clear answer yet. Sweet guys.

[S13Joe]

This still isn't locked? Wow.

http://en.wikipedia.org/wiki/SR20DET

GOOGLE DID IT TO ME

[Nali]

REPOST

Why are you planning on buying an engine when you dont even have the car yet?

Why not get the 240 first, then see how much fun you can ahve with the KA.

[Fieldy]

REPOST

Why are you planning on buying an engine when you dont even have the car yet?

Why not get the 240 first, then see how much fun you can ahve with the KA.

[jr_ss]

red top is for the s13 black is for the s14

Dumbest post ever....

[Kalypso]

google works

and this new smiley is the shyt

[S13_love]

http://www.japanmotorimport.com/JDM_engines/Nissan

http://www.jdmsource.ca/v2/inventory.asp?CatID=3

http://www.japanesestarmotor.c...issan

The difference?...well, hopefully one of these sites will give you a better understanding.

[Didderson]

SERIOUS POST 4 Serious BIZNESS:

S13 blacktop (greater than 94 (Newer))-Usually lower mileage-Usually about $500 more expensive (because its newer)-Minor ECU changes 96-98 (interchangeable with all s13 ECU’s)-Minor wire harness changes-Larger Oxygen Sensor (still narrow band, no performance gain)

Among these differences which are correct, I have been told but never confirmed a 'redesigned' oil squirter design on the black tops. There are threads out there on this topic.

Also an obvious sign that your SR20 has blacktop mechanics or internals (such as the oil squirters) is the cooling fin design on the front of the SR head. A true redtop will have no fins, a blacktop mechanics motor will have the fins. (these fins dont really help with cooling much, they just look neat lol).If you happen to get an ecu with 62, you probably had a 93.5 SR20, which is the unupgraded ECU (easier to rom tune I guess) and the updated mechanical designs. I have one of these. It makes sense as to why Nissan made them because during 1993 they started to make blacktops, but didn't want to confuse the market by changing the valve cover color mid year.Check the Version 1 V1 SR build RIP in the sig for details.

edit: all S13 SR's have the "high stack" velocity intake runner design. The S14 motor recieved a slight reduction in the intake runner length, but IIRC s14 motors have vvt or some sort (obviously i dont care abotu s14motors because I like cams that give me all power all the time lawl).