SCC project 200sx se-r motoiq project low buck Nissan sr20de

When it comes to N/A performance, most people immediately think of the Honda brand.  Even though Honda motors are coveted for their all motor revving ability, there are other motors that do well in tuned naturally aspirated trim, especially for street California pump gas applications.  One such motor is the Nissan SR20DE, its big 2000cc displacement is an excellent choice for building  a low buck highly streetable motor that can  motivate like a B series Honda engine for a much lower price.  Our low buck power goal will be at least 180 whp and 150 lb/ft of torque on 91 octane cali pee water.  Unlike many uber builds that end up as tech articles, we will be looking at cost containment and total streetabilty as our end goals, keeping exotic parts to a minimum.  Our engine will also be built with durability in mind.  Now that track days are becoming so popular, it’s not uncommon for built motors to be pounded around road courses all day, for an entire weekend.  This is far more rigorous and hard on the motor than drag racing or a street racers pull though the gears.

The SR20DE engine has been Nissan's workhorse performance 4 cylinder for more than the last decade.  Originally introduced in North America in the Infiniti P10 G20 and in Japan in the PS13 in 1990, the SR20 was designed as a performance motor from the beginning.  Later in 1991 the SR was dropped into the venerable B13 Sentra SE-R and NX2000.  The SR20 was carried over to the B14 200SX SE-R in 1995 and the B14 Sentra SE in 1998 as well as the P11 1998-2001 Infiniti G20.  The 2000-2002 B15 Sentra SE was the last application of the SR20DE in North America.

The SR was built tough to take lots of punishment.  With a square 86mm x 86mm bore and stoke with a rod length of 136.25mm, the SR liked to rev more than its more pedestrian longer stoke siblings like the KA24.  Its lightweight but tough closed deck aluminum block was designed from the get go to withstand the rigors of turbocharging in the PS13 Silvia, the much better, JDM version of our 240SX. The crank is a beefy fully counterweighted forged and shotpeened steel unit with plenty of journal overlap.  The blocks main caps are tied rigidly together with a stout girdle.  The rods are forged and shotpeened with generous proportions around the big bolts and bushed floating pins.  The cylinder head had finger follower valve actuation for aggressive valve movement control and to make room for high, generous flowing for the time split intake ports.  Hydraulic lash adjustment at the pivot fulcrums kept maintenance low.  Although the pistons are cast, they are a tough hypereutectic material and have strong detonation resistant ring lands. It is not unheard of that a totally stock bottom end SR20DE can withstand over 400 turbocharged whp reliably. All North American versions of the SR20DE have a 9.5:1 compression ratio and a combustion chamber volume of 46.1 cc. The SR20DE also has quite a bit of aftermarket support, as it was a very popular engine for racing and street modification in Japan.

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Thursday, June 11, 2009 12:21 PM
No its 00/01 B15 SE and 99-02 P11?? No? 02 is Spec V.

First post.
Mike Kojima
Mike Kojimalink
Thursday, June 11, 2009 12:32 PM
Fixed, thank you real time editor!
Tommy SR20
Tommy SR20link
Thursday, June 11, 2009 6:18 PM
Can't wait to see more. I'll be watching this one closely.
Tommy SR20
Tommy SR20link
Thursday, June 11, 2009 6:19 PM
Can't wait to see more. I'll be watching this one closely.
Saturday, June 13, 2009 6:00 AM
Sweet, my B14 is currently at 167whp.I'll be following this build for a few more ponies.
Saturday, June 13, 2009 10:36 AM
Nice project!!
Following it closely to get the most out of my JDM 10:1 engine stuffed into b13 4door Mexican made SENTRA ;)

Greetings from NICARAGUA (Central America). Keep the good work guys.
Sunday, June 14, 2009 5:52 AM
what is you just get the piston and install with wpc them.what will happen wpc is not available in jamaica.so can a i buy piston that i dont have to wpc or do anything to.
Sunday, June 14, 2009 6:08 AM
now i understand what is shot peening.thanks mike alot trust me your the man of the moment im learning alot.thanks
Mike Kojima
Mike Kojimalink
Sunday, June 14, 2009 7:24 AM
You can send parts to california to get WPC treatment. Just like you have to send parts out for coating. With fed ex, now days it isnt such a big deal!

Anyway on this motor we WPC'ed the bores but not the pistons as this was a used block.
Sunday, June 14, 2009 7:59 AM
Excellent information !!
Monday, June 15, 2009 4:15 PM
Great Article
When do we get part two ??
Tuesday, June 23, 2009 11:39 AM
Is this the same 200SX SE-R from the old SCC project cars?
Mike Kojima
Mike Kojimalink
Tuesday, June 23, 2009 5:51 PM
Yes it is.
Wednesday, June 24, 2009 7:37 PM
Thought it looked familiar, a friend of mine just gave me a few older SCC and I loved the write ups on that car. Keep it up!
Tuesday, August 18, 2009 12:21 PM
Love that car. Hey mike i currently have 98 ex civic and a want one of these cause civics are a dime a dozen (love them though). what nissan would you recommend for a daily driver and part time autocrosser? Your input will used literally most likely thanks.
Thursday, October 15, 2009 1:38 PM

What happened to the super dooper engine that was in the car? I am assumng it is not still in there as it was a higher budget build than this one I think. No offense, but the car looks ricier than I remembered. I love this site, just like the old SCC.
PC Talon
PC Talonlink
Wednesday, September 29, 2010 7:57 AM
Nice job on the article guys.

So is it worth the effort of swapping a high port intake manifold to a low port manifold, or just the cam shafts. I have a 99 Sentra SE-L and it has all the extra emissions junk on it the high port and early low ports don't have. And was considering grabbing the manifold off a junked NX2000.

Another question regarding the G20 ECU swap to a B14. Does it matter if the G20 is a manual or automatic?

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