That's not true at all. S13 Blacktops have 54c pistons and oil squirters (the ones found in GTiR, S14, and S15 sr's). The block casting is different too. I'm still trying to figure out if it has 54c rockers...i should be able to confirm that soon.tenkawa_akito wrote:red top and black top are the same save for the color of their valve cover. An S13 SR is an S13 SR.
I thought it was only the S14 with the VVT?... or well that's what I read in a car Magstiergott wrote:this is something i have found out and i paid for it. if you plan on upgrading the cams in your sr its more cost effective to buy an s13 black top than it is to get the s14 or s15 motor. when i pulled the cams on my s14 motor i had to disable the VVT to run the tomei cams. just a thought
The pistons might be stronger (general consensus says yay), and they have better oil cooling channels. The oil squirters are supposed to have a better spray pattern and angle, but nobody's gotten the pattern tested. I just found out that if you have the ribbed casting Red Top...little fins on the front of the head (supposedly rare), they have the same longblock as the black top s13 motors.J-Spec Tuner wrote:After you find all that out it would be great if you could explane the difference and advantages in detail in this thread.
which mag was it?Jala47 wrote:I thought it was only the S14 with the VVT?... or well that's what I read in a car Mag
Sounds like an earlier redtop with a blacktop valve cover to me. I can't confirm this though. Start a thread in Freshalloy...they have all kinds of 'useless' information. I bet they'll be able to answer your question.hondaeater wrote:i know exactly what the fins look like on the head. My blacktop has no fins on the head, its all smooth. I asked the supplier i got the motor from and he said that early model blacktops had no fins.
can someone confirm this?
Super Street Magnismofly wrote:
which mag was it?
What do you need this info for?Jala47 wrote:anyone have pics they can post of the SR VIN numbers?
Is there a way to tell the year of your motor? I just bought a car that the guy listed as having a 94 s13 blacktop with a t28 which came with it.dj_lennon_franz wrote:88-90.5-CA18det (S13 and 180sx T25 turbo 182hp 180tq 7psi)
90.5-94.5-SR20det Redtop (S13 silvia and 180sx T25 turbo 210hp 207tq 7psi)
94.5-96-SR20det Blacktop (SilEighty NISMO cams T28 turbo 242hp 234tq 10psi only 400 ever made)
95-99-SR20det Blacktop (180sx T25 turbo 210hp 207 tq 7psi)
95-98-SR20det Notchtop (S14 blacktop T28 turbo VVT intake cam 232hp 224tq 7psi)
99-02-SR20det Notchtop (S15 blacktop T28 turbo VVT intake & exhaust 252hp 243tq 10psi)
just so its a lil more specific
http://www.nicoclub.com/zerothread?id=88720johnyQ wrote:
Is there a way to tell the year of your motor? I just bought a car that the guy listed as having a 94 s13 blacktop with a t28 which came with it.
According to your timeline, that doesn't really fit into anything. It does have fins on the front, so according to others in this thread its probably not an 'early blacktop'. Any clues?