REDTOP vs REDTOP - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

thepest · 02-07-2007, 09:51 PM

So I found out that there is 2 type of redtops. the only difference is the head as far as I can see. So is the newer redtop with the cooling fins better by far then the older one?

projectRDM · 02-07-2007, 09:58 PM

No.

Welcome to 1991.

**mrmephistopheles** · 02-07-2007, 10:06 PM

just an age difference, that's all. You'll never notice it.
1993, Russ.

projectRDM · 02-07-2007, 10:10 PM

Close, I don't keep up much with SRs, too gay for my taste.

derk · 02-07-2007, 10:10 PM

^^

lol.. its not possible for people to know about this back in 1991...

seeing as how the S13 blacktop sr didnt come out till what.. 96? something like that.

but yes.

to the original poster.

get the third version of the redtop instead, it is the best one. came with 275hp and 300ft/lb of torque stock and was endurance tested at the nissan factory and it was able to maintain a steady 8000rpm for 10 hours straight without any catastrophic failure.

it is marked by cooling fins that are slightly slanted to the right on the head of the motor, and a red valve cover that has a slight tinge of orange in it

hope this helps

thepest · 02-07-2007, 10:46 PM

Quote:

Originally Posted by derk

^^

lol.. its not possible for people to know about this back in 1991...

seeing as how the S13 blacktop sr didnt come out till what.. 96? something like that.

but yes.

to the original poster.

get the third version of the redtop instead, it is the best one. came with 275hp and 300ft/lb of torque stock and was endurance tested at the nissan factory and it was able to maintain a steady 8000rpm for 10 hours straight without any catastrophic failure.

it is marked by cooling fins that are slightly slanted to the right on the head of the motor, and a red valve cover that has a slight tinge of orange in it

hope this helps

Ya that helps a lot, thanks man I an ordering it in a day. Is it true it uses a little bit bigger turbo?

TheTimanator · 02-07-2007, 10:57 PM

Quote:

Originally Posted by thepest

Ya that helps a lot, thanks man I an ordering it in a day. Is it true it uses a little bit bigger turbo?

yes it uses a T26...

/sarcasm

is this for real? All the S13 redtops are pretty much the same, minor differences and of course, as MrMeph mentioned, really the biggest factor is age.

thepest · 02-07-2007, 11:02 PM

Quote:

Originally Posted by TheTimanator

yes it uses a T26...

/sarcasm

is this for real? All the S13 redtops are pretty much the same, minor differences and of course, as MrMeph mentioned, really the biggest factor is age.

Iam just going by what I was told by some people. So I asked.

TheTimanator · 02-07-2007, 11:09 PM

Quote:

Originally Posted by thepest

Iam just going by what I was told by some people. So I asked.

in that case I'll try to be helpful
this has all 4 versions of the SR and the differences etc
http://srownersclub.com/jdm_engines.asp

and here is a useful thread full of info and links etc
http://www.zilvia.net/f/showthread.php?t=62607

thepest · 02-07-2007, 11:35 PM

Quote:

Originally Posted by TheTimanator

in that case I'll try to be helpful
this has all 4 versions of the SR and the differences etc
http://srownersclub.com/jdm_engines.asp

and here is a useful thread full of info and links etc
http://www.zilvia.net/f/showthread.php?t=62607

ok, thanks for the info.

McRussellPants · 02-07-2007, 11:56 PM

If they wern't 15years old theres alot of differences between the two.

but they are. so your rollin the dice no matter what.

steve shadows · 02-08-2007, 01:30 AM

There is a slight discrepancy in port hieght from inlet to valve seat on the Finned Late model heads and the Unfinned heads. The unfinned heads are just IMO. But for some reason the Built motor im doing it finned. The un-finned head is longer ports barely or some crap. I could be talking out of my ass. The Black top s13 is lower port and the VTC heads are the shortest.

McRussellPants · 02-08-2007, 10:36 AM

the finned redtop has the same internals as the early blacktops.

thepest · 02-08-2007, 02:00 PM

OK, does anyone have actual specs? I mean everyone has different info about them, but all and all the finned one is newer so it would be a better buy fo rthe same price. right?

Cashizslick · 02-08-2007, 02:06 PM

Paint the finned redtop valve cover black, and resell it to some newb as a blacktop . . .

. . . any way to tell if this has happened (besides fresh paint on the valve cover)? No sense getting scammed - any dates/numbers to check on the motor itself?

thepest · 02-08-2007, 02:30 PM

Quote:

Originally Posted by Cashizslick

Paint the finned redtop valve cover black, and resell it to some newb as a blacktop . . .

. . . any way to tell if this has happened (besides fresh paint on the valve cover)? No sense getting scammed - any dates/numbers to check on the motor itself?

LOL . . . that is true.

Wei240 · 02-08-2007, 03:50 PM

i'd just get the newest one, type x black top, lower mileage, the ecu can also tell you what year unless someone decides to fvck with the harness to run different ecus which does happen

or just rebuild any old redtop, and you won't have to worry if it comes with fins or not

TheTimanator · 02-08-2007, 05:57 PM

you can also tell the o2 sensor. Skinny= redtops Fat= blacktops... Although I have a fat o2 sensor and it has a red valve cover. I should check the ecu sometime to what it really is...not that it matters to me.

thepest · 02-12-2007, 05:55 PM

Quote:

Originally Posted by TheTimanator

you can also tell the o2 sensor. Skinny= redtops Fat= blacktops... Although I have a fat o2 sensor and it has a red valve cover. I should check the ecu sometime to what it really is...not that it matters to me.

Oh, I didn't know that. Thanks for all the help guys.

02-07-2007, 09:51 PM	#1
thepest Leaky Injector Join Date: Nov 2006 Location: Las Vegas Age: 38 Posts: 66 Trader Rating: (0) Feedback Score: 0 reviews	REDTOP vs REDTOP So I found out that there is 2 type of redtops. the only difference is the head as far as I can see. So is the newer redtop with the cooling fins better by far then the older one?

02-08-2007, 01:30 AM	#12
steve shadows Post Whore! Join Date: Aug 2003 Location: LA and OC Posts: 8,202 Trader Rating: (5) Feedback Score: 5 reviews	There is a slight discrepancy in port hieght from inlet to valve seat on the Finned Late model heads and the Unfinned heads. The unfinned heads are just IMO. But for some reason the Built motor im doing it finned. The un-finned head is longer ports barely or some crap. I could be talking out of my ass. The Black top s13 is lower port and the VTC heads are the shortest. __________________ Like Me on FaceBook !

02-08-2007, 05:57 PM	#18
TheTimanator Post Whore! Join Date: Apr 2002 Location: Nashville Age: 41 Posts: 2,535 Trader Rating: (1) Rides Gallery: TheTimanator Feedback Score: 1 reviews	you can also tell the o2 sensor. Skinny= redtops Fat= blacktops... Although I have a fat o2 sensor and it has a red valve cover. I should check the ecu sometime to what it really is...not that it matters to me. __________________ 89 S13 hatch/////98 Subaru 2.5RS

02-07-2007, 09:58 PM	#2
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 51 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	No. Welcome to 1991.

02-07-2007, 10:10 PM	#4
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 51 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	Close, I don't keep up much with SRs, too gay for my taste.

02-07-2007, 10:10 PM	#5
derk Zilvia Member Join Date: Feb 2006 Location: Canada Posts: 185 Trader Rating: (2) Feedback Score: 2 reviews	^^ lol.. its not possible for people to know about this back in 1991... seeing as how the S13 blacktop sr didnt come out till what.. 96? something like that. but yes. to the original poster. get the third version of the redtop instead, it is the best one. came with 275hp and 300ft/lb of torque stock and was endurance tested at the nissan factory and it was able to maintain a steady 8000rpm for 10 hours straight without any catastrophic failure. it is marked by cooling fins that are slightly slanted to the right on the head of the motor, and a red valve cover that has a slight tinge of orange in it hope this helps

02-07-2007, 11:56 PM	#11
McRussellPants Nissanaholic! Join Date: Oct 2005 Location: Austin, Tx Posts: 2,168 Trader Rating: (0) Feedback Score: 0 reviews	If they wern't 15years old theres alot of differences between the two. but they are. so your rollin the dice no matter what.

02-08-2007, 10:36 AM	#13
McRussellPants Nissanaholic! Join Date: Oct 2005 Location: Austin, Tx Posts: 2,168 Trader Rating: (0) Feedback Score: 0 reviews	the finned redtop has the same internals as the early blacktops.

02-08-2007, 02:00 PM	#14
thepest Leaky Injector Join Date: Nov 2006 Location: Las Vegas Age: 38 Posts: 66 Trader Rating: (0) Feedback Score: 0 reviews	OK, does anyone have actual specs? I mean everyone has different info about them, but all and all the finned one is newer so it would be a better buy fo rthe same price. right?

02-08-2007, 02:06 PM	#15
Cashizslick Zilvia Junkie Join Date: Sep 2005 Posts: 328 Trader Rating: (0) Feedback Score: 0 reviews	Paint the finned redtop valve cover black, and resell it to some newb as a blacktop . . . . . . any way to tell if this has happened (besides fresh paint on the valve cover)? No sense getting scammed - any dates/numbers to check on the motor itself?

02-08-2007, 03:50 PM	#17
Wei240 Nissanaholic! Join Date: Sep 2002 Location: socal Posts: 1,778 Trader Rating: (0) Feedback Score: 0 reviews	i'd just get the newest one, type x black top, lower mileage, the ecu can also tell you what year unless someone decides to fvck with the harness to run different ecus which does happen or just rebuild any old redtop, and you won't have to worry if it comes with fins or not