What are JDM Engines?

JDM engines are engines which were manufactured for the Japanese market. Compared to engines which were manufactured for the American market or the European market. JDM engines tend to have more HP than USDM (North America) or EDM (Europe) engines.

The term Japanese Domestic Market (JDM) refers to the local market in Japan for Japanese-made motor vehicles and components. Within the car import scene, this term most commonly refers to Japanese-brand automobiles and parts designed and constructed to conform to Japanese vehicle and equipment regulations and to suit Japanese market preferences.

Compared to other countries such as the United States where it is normal for one to purchase a vehicle and own it for as long as they desire over a great distance, Japanese vehicle ownership culture is heavily influenced by the strict motor vehicle inspection system which makes compliance of vehicles increasingly expensive and difficult as they grow older which forces owners to pay more each year to own the car, sell it, or have it scrapped. The motor inspection rules and the comparatively low average mileage of JDM vehicles have created a burgeoning export business both through traditional commerce and the grey market.

According to the FIA, the average car in Japan travels 9,300 kilometers per year compared to an average of 19,100 kilometers per year for a vehicle in the United States.

Will I pass smog in California with a jdm engine?

The short answers is yes but there’s a couple things you need to make sure of.

1. The engine must be the same year or newer than the vehicle.

2. The engine must be from the same type of vehicle (passenger car, light-duty truck, heavy-duty truck, etc.) based on gross vehicle weight.

3. If the vehicle is a California certified vehicle then the engine must also be a California certified engine.

4. All emissions control equipment must remain on the installed engine.

For some more info on this read this thread, http://www.clubcivic.com/board/showthread.php?t=199946

Proper engine break-in procedure

So you just bought a used engine for your car. It is installed and you are ready to drive it. Remember the engine probably hasn’t been run in several months, so a proper engine break-in procedure is important.

Here it is:

0 miles.

Let the engine idle for 10 min then idle at 2000 rpm for 10 min. Turn car off and let it settle for about 5-10 min.

0-200 miles.
Try to keep the highest rpm under 3000 rpm. Every 15-20 miles,spin the engine to 4500 rpm in first and sometimes in second gear.

200-400 miles.
Try to keep the revs limited to 3500 rpm. Raise the revs rpm to 5500 with the same frequency as above.

400-600 miles.
Go to 4000 rpm for driving limit. Raise the revs to 6000 – 6500 rpm and include 3rd gear pulls, same frequency as above.

600-800 miles.
4500 rpm driving limit. Rev it to 7000  rpm and include partial 4th gear pulls.

800-1K miles.
5000 rpm limit with revs to 7500  with some pulls all the way through 4th and partial fifth gear pulls.

Nissan Sports Car Engine Specifications

Nissan Engine Specs

Conversions:
hp = kW * 1.341
lbft = Nm * .738

CA18-DE
Type: 1809cc EFI DOHC 16 valve 4cyl
Power: 97kW (130hp) @ 6400rpm
Torque: 162Nm (120lbft) @ 5200rpm
Gearboxes: FWD 5-speed and RWD 5-speed and 4-speed auto
Source: RWD 1988+ Silvia, FWD Australian EXA’s

CA18-DET
Type: 1809cc EFI DOHC 16 valve 4cyl turbo
Power: 130kW (174hp) @ 6400rpm (108kW (145hp) @ 6400rpm 87-88)
Torque: 225Nm (166lbft) @ 4000rpm (201Nm (148lbft) @ 4000rpm 87-88)
Gearboxes: FWD 5-speed / RWD 5-speed and 4-speed auto
Sources: RWD intercooled: 89-91 180SX and Silvia turbo
RWD non-intercooled: 1987-1988 Gazelle
FWD non-intercooled: 1988 Auster 1800Xtt

SR18-DE
Type: 1838cc EFI DOHC 16 valve 4cyl
Power: 104kW (140hp) @ 6400rpm
Torque: 167Nm (123lbft) @ 4800rpm
Gearboxes: FWD 5-Speed
Source: 92-93 Sunny GTS and Pulsar GTi

SR20-VE
Type: 1998cc EFI DOHC 16 valve 4cyl
Power: 142kW (190hp) @ 7000rpm
Torque: 144.6 lbft @ 6000 rpm
Gearboxes: FWD 6-speed CVT
Source: FWD Primera

SR20-DE
Type: 1998cc EFI DOHC 16 valve 4cyl
Power: 119kW (160hp) @ 6400rpm (108kW (145hp) FWD)
Torque: 188Nm (139lbft) @ 4800rpm (178Nm (131lbft) FWD)
Gearboxes: FWD 5-speed and RWD 5-speed and 4-speed auto
Source: RWD 1993-94 Silvia Q’s, FWD Presea, Pulsar SSS, NX Coupe

SR20-DET
Type: 1998cc EFI DOHC 16 valve 4cyl turbo
Power: 153kW (205hp) @ 6000rpm (180SX), 164kW (220hp) @ 6000rpm (Silvia), 172kW (231hp) @ 6400rpm (Pulsar GTi-R)
Torque: 274Nm (202lbft) @ 4000rpm (180SX), 274Nm (202lbft) @ 4800rpm (Silvia), 284Nm (210lbft) @ 4800rpm (Pulsar GTi-R)
Gearboxes: RWD 5-Speed and 4-Speed Auto (1993+ Silvia and 180SX)
AWD east-west 5-Speed (GTi-R)
Source: Silvia K’s and 1993+ 180SX, 1991-92 Pulsar GTi-R AWD

RB20-DET
Type: 1998cc EFI DOHC 24 valve 6cyl turbo
Power: 160kW (215hp) @ 6400rpm (auto 153kW (205lbft) @ 6400rpm)
Torque: 263Nm (194lbft) @ 3200rpm (auto 265Nm (196lbft) @ 3200rpm)
Gearboxes: RWD 5-speed and 4-speed auto
Source: 1989-1992 Skyline GTS and Cefiro Sedan

RB20-DE
Type: 1998cc EFI DOHC 24 valve 6cyl
Power: 116kW (156hp) @ 6400rpm
Torque: 184Nm (136lbft) @ 5200rpm
Gearboxes: RWD 5-speed and 4-speed auto
Source: 89-92 Laurel and Skyline

KA24-E
Type: 2389cc EFI DOHC 16 valve 4cyl
Power: 140hp @ 5600 rpm
Torque: 152lbft @ 4400
Gearboxs: 5-speed and 4-speed auto
Source: 240sx 1989-1990, Pickup 90-97, Stanza 1990-1992, Axxess 1990-1991

KA24-DE
Type: 2389cc EFI DOHC 16 valve 4cyl
Power: 155hp @ 5600 rpm
Torque: 160lbft @ 4400
Gearboxs: 5-speed and 4-speed auto
Source: 240sx 1991-1998, Altima 1993-2001, Frontier 1998-2003

RB25-DE
Type: 2498cc EFI DOHC 24 valve 6cyl
Power: 134kW (180hp) @ 6000rpm
Torque: 225Nm (166lbft) @ 5200rpm
Gearboxes: RWD 5-Speed and 4-Speed Auto
Source: 92-95 Cefiro and Skyline

RB25-DET
Type: 2498cc EFI DOHC 24 valve 6cyl turbo
Power: 187kW (251hp) @ 6400rpm
Torque: 295Nm (218lbft) @ 4800rpm
Gearboxes: RWD 5-Speed and 4-Speed Auto
Source: 1993+ Skyline GTS-25t

RB26-DETT
Type: 2597cc EFI DOHC 24 valve 6cyl twin turbo
Power: 208kW (279hp) @ 6800rpm
Torque: 368Nm (272lbft) @ 4400rpm
Gearboxes: North-South AWD 6-Speed
Source: Skyline R32, R33, R34 GT-R’s AWD, Stagea

VG30-ET
Type: 2960cc EFI OHC 12 valve V6 turbo
Power: 172kW (231hp) @ 5200rpm
Torque: 333Nm (246lbft) @ 3600rpm
Gearboxes: RWD 5-Speed and 4-Speed Auto
Source: 1983+ 300ZX turbo

VG30-DETT
Type: 2998cc EFI DOHC 24 valve V6 twin turbo/twin intercooled
Power: 208kW (279hp) @ 6400rpm
Torque: 388Nm (286lbft) @ 3600rpm
Gearboxes: RWD 5-Speed and 4-Speed Auto
Source: 1989+ 300ZX twin turbo

Power Conversion Table
1 ps 736 W 1.013 hp
1 hp 745.7 W 0.987 ps
1 kW 1.359 ps 1.341 hp

4 tips to increase your Horse Power

Here are 4 little things you can do to increase the power in your car.

1) Decrease air intake temperature
–Decreasing the air intake temp causes more oxygen molecules to fit into your combustion chamber, which then requires more fuel for combustion. This causes the combustion reaction to explode with more pressure, and more power. Hot air intake would not allow as many oxygen molecules to enter combustion, hence making a weaker air/fuel combustion reaction.

2) Increase the intake flow
–It is very important to let the combustion chambers of your cylinders recieve as much air as possible. With a restricted air flow into the cylinders, it creates more resistance when the crank has to pull the cylinders down for air and fuel.

3) Cram more air into combustion
–This is why turbos are used. Cramming more air molecules into the combustion chambers requires more fuel to be let in as well. example- A combustion chamber packed with 1 trillion air molecules and 1 million fuel molecules, would be much more flammable then a combustion chamber that contains 1 million air molecules and 100,000 fuel molecules. A more flammable combustion reaction will push the cylinder down harder, and faster.

4) Let exhaust exit freely
–There are a few ways this can be accomplished. One of these internal modifications to let exaust gases exit more freely, is to purchase cams that allow a higher exaust lift for the valves. Another way to increase exaust flow is to purchase a free-breathing exaust system. Normally people only buy an aftermarket muffler without the necessary wide piping. This helps the exaust gases exit very little compared to purchasing or custom fabricating an entire exaust system. However, be aware that an exaust system that breathes too freely will cause your car to lose all back pressure, and can actually decrease performance. Turbos on the other hand, need an easier breathing exaust system due to the increase of air flow.