Sr20det Red Or Black Top

1CLEANS13

1CLEANS13

Spectator
I AM IN THE MARKET FOR AN SR20 RED TOP OR BLACK TOP FOR MY S13. GOT SOME QUESTIONS FOR ALL YOU SR FREAKS OUT THERE.
FIRST:
WHATS THE DIFFERENCE(IF ANY) ON THE RED OR BLACK TOP (BOTH S13)???

SECOND:
WHAT THINGS SHOULD I CHANGE BEFORE INSTALLING IT???
( I HEARD THE ROCKER STOPPER ARE NO GOOD, AND ALSO THE HEAD GASKET) ARE THERE ANY OTHER THINGS I SHOULD KNOW???

I WAS GOING TO GO RB BUT THE MONEY IS A LITTLE SHORT AND I AM NEAT FREAK, SO I WANT AC AND EVERYTHING TO BE LIKE FACTORY, SO I DECIDED TO GO SR, AND KEEP IT NICE AND CLEAN :cool:

THANKS FOR ANY HELP
 
They are the same save the money and buy a redtop the only minor diffrence is a larger o2 in the blk top and a grid pattern on the front of the blk top head that serves no point..
 
95se5384 said:
They are the same save the money and buy a redtop the only minor diffrence is a larger o2 in the blk top and a [B]grid pattern on the front of the blk top head that serves no point[/B]..
Click to expand...


No point but extra cooling. :rolleyes:

The motors are pretty much the same unless you find a TRUE 97 - 98 Type X motor. You can tell this motor because the ECU is marked J4 and same and the tops of the pistons. The pistons are stronger, better oil squirters. No other larger difference. Now my recommendation would be get that motor minus the MAF, ECU and HARNESS. The ECU is a little tricky to tune for most. So you get a REDTOP HARNESS ECU AND MAF(or 300zx, Lightning, Cobra depending on your goals) Go from there.As far as Rocker stopper they DO NOT come OEM. They are in expensive tho. The headgaskets vary depending on mileage. Some like to do it MOST dont. Waste of time IMO unless you are building it.

Contact Jordan @ Drag International he knows a lot and has motors in stock: 954 475 7700
 
z4k said:
No point but extra cooling. :rolleyes:

The motors are pretty much the same unless you find a TRUE 97 - 98 Type X motor. You can tell this motor because the ECU is marked J4 and same and the tops of the pistons. The pistons are stronger, better oil squirters. No other larger difference. Now my recommendation would be get that motor minus the MAF, ECU and HARNESS. The ECU is a little tricky to tune for most. So you get a REDTOP HARNESS ECU AND MAF(or 300zx, Lightning, Cobra depending on your goals) Go from there.As far as Rocker stopper they DO NOT come OEM. They are in expensive tho. The headgaskets vary depending on mileage. Some like to do it MOST dont. Waste of time IMO unless you are building it.

Contact Jordan @ Drag International he knows a lot and has motors in stock: 954 475 7700
Click to expand...


THANKS FOR THE INFO ZAK
 
ALL black top sr20det's come with 54c pistons and updated piston oil squirters (to take advantage of the newer piston design). Blacktop sr20det's also come with a better oil pickup although they still come with a crappy little pan. All black tops also come with the larger O2 sensor..."fat-type".

97-98 kouki blacktops do come with the J4 and a harness to work with the updated design but the mafs are the same. If you really wanted to eliminate the J4, there's no need to waste your money on a new harness. Instead, you can repin the old harness to work with pre-J4 ecus. Also, if you got a redtop ECU to replace the J4, you'd have to change the O2 sensor to the older, "skinny-type".

I wouldn't bother with swapping out the J4/harness/o2...I had the same "problem" when I was trying to figure out how I was going to run an ecu tune with all my upgraded parts. I was planning on running an Enthalpy tuned pre-J4 ecu and repinning the harness. Now that Enthalpy is MIA and rarely responds to emails anymore, I'd ditch any retune ideas since he was the only one doing them with half a brain. Today there are more options.

You can get a bikirom for around $300 wich will allow you to hookup a latop to your stock ecu and anyone can tune it (yourself included). I would have gone this route but bikiroms are currently backordered for a little while.

I ended up getting a used power FC for a kouki blacktop. I got the PFC for next to nothing since i got it used and without a controller. The controller sucks though anyway so I bought a FC-datalogit which adds inputs/outputs to the power FC (for datalogging or a wideband o2, fan control, ect). I basically got a full, plug and play standalone for around $500...can't beat that IMO.

Anyway...there's more than one way to skin a cat.

S13 Slide said:
I also heard that the oil Squirter patterns on the Black Top are different then the Red top???
Click to expand...

You are correct sir.

95se5384 said:
They are the same save the money and buy a redtop the only minor diffrence is a larger o2 in the blk top and a grid pattern on the front of the blk top head that serves no point..
Click to expand...

Note to self, don't take advice from 95se5384. :eek:
 
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