Acura Integra Engine Specs


Ahh… one of Honda’s beloved motors.. the B-Series!

ALL Acura Honda Integras (1994-2001), regardless of the model, all comes equipped with a B-series engine! The B-series are a family of only inline four cylinder dual overhead cam engines introduced by Honda around 1989. B-series were Honda’s first application for the VTEC (variable valve timing and lift electronic control) system. They were made in 1.6 liters to 2.0 liters with and without VTEC. The 3rd generation Integras (1994-2001) come equipped stock with different B-series engine.

The Main Three Engines That Come With Integras

ALL Integras are in the B18 family out of the B-series motors… The number after the B tells you how many liters are within that engine. So that means all Integras, stock from factory, are 1.8 liters. The keyword there is stock from factory. There are actually a lot other engines you can fit into an Integra but I am only going to be focusing on the three that comes with stock! So first off, the


The B18B1 are one of Integras most common motors. The B18B1 is found in about 62% of third generation Integras.

This motor is found in: 1994-2001 Acura Integra RS/LS/GS/SE (Rally Sport, Luxury Sport, Grand Sport, Spectal Edition) DC4, DB7, coupes & sedans

Acura Integra 94-97 LS
Silver 94-97 Integra LS




The street/nick name that this motor goes by is: LS Motor

Here are the specs:

  • Power: 142 BHP (143 Horsepower) @ 6300 RPM
  • Non-VTEC
  • Redline: 6800 rpm
  • Rev Limit: 7300 rpm
  • Compression: 9.2:1
  • Bore: 81mm (3.2 in)
  • Stroke: 89mm (3.5 in)
  • Rod Length: 137.01mm (5.394″)
  • Rod/Stroke Ratio: 1.56
  • Displacement: 1,834 cc (111.9 cu in)
  • Transmission: S80
  • OBD1 years 1994-1995. OBD2 years 1996+

There is also the Japanese JDM model of the B18B1, and it is marked B18B on the block without any number. The JDM version has a compression rate of: 9.4:1. Since the B18B has a higher compression rate, that results in the B18B version having an additional more horsepower.

Appearance wise, Honda did switch the way the valve cover looked from the 1994-1995 and the 1996-2001. Here is the difference:

B18B1 valve cover 94-95
B18B1 Valve Cover 1994-1995 (Rough Style)
B18B1 valve cover 96-01
B18B1 Valve Cover 1996-2001 (Smoother Style)








Overall, the B18B1 is a great motor, it might not be the quickest out of the group but it definitely is the more reliable one. I actually use to own a 1999 Honda Civic DX Coupe with a B18B1 swapped into it and it was one of the most reliable vehicle I have owned. I took that car to Iowa to Georgia back and fourth twice running into no problems what so ever. I definitely recommend this motor to someone that is looking for a reliable yet pretty quick engine!

On to the next engine… introducing the…


B18C1 ENGINEThe B18C1 are one of Honda’s successful line of VTEC engines. The B18C1 is found in about 28% of third generation Integras.

Acura Integra 98-01 GSR
photo credit: 1998 Acura Integra GSR via photopin (license)

This motor is found in: 1994-2001 Acura Integra GSR (Grand Sport Racing) DC2, DB8, coupes & sedans.


The street/nick name that this motor goes by is: GSR Motor

Here are the specs:

  • Power: 170 Horsepower @ 7600 RPM
    • Secondary Runners Open @ 4400 RPM
    • VTEC Engages @ 6000 RPM
  • Torque: 128 lb-ft @ 6200 RPM
  • Redline: 8000 rpm
  • Rev Limit: 8200 rpm
  • Compression: 10.1:1
  • Bore: 81mm (3.2 in)
  • Stroke: 87.2 mm (3.4 in)
  • Rod Length: 140.0 mm (5.5″)
  • Rod/Stroke Ratio: 1.58
  • Displacement: 1,797 cc (109.7 cu in)
  • Transmission: Y80/S80
  • OBD1 years 1994-1995. OBD2 years 1996+ (ECU code: P72)

Overall, the B18C1 is a powerful motor with great potential for more power. If you are looking for a quick motor with VTEC, I would definitely suggest the GSR motor! I have seen a lot of built GSR’s and let me tell you… they are nothing to play around with! But… the last and rarest motor of the Integra family… that is a different story of power, take a look at the


B18C5 ENGINEBEHOLD! The one and only B18C5! A major upgrade from the previous B18C1. They might look the same but this B18C5 packs a big punch! These are probably one of thee strongest B-series motor Honda has made. The B18C5 is found in about 10% of third generation Integras.

Integra Type R
Integra Type R By Sitoumadje (Own work) [CC BY-SA 3.0]]
This motor is found in: 1997-2001 Acura Integra Type-R (Type RacingUSDM DC2 Coupes

The street/nick name that this motor goes by is: Type-R Motor

Here are the specs:

  • Power: 195 Horsepower @ 7800 RPM
    • VTEC Engages @ 6000rpm
  • Torque: 130 lb-ft @ 7500 RPM
  • Redline: 8400 rpm
  • Rev Limit: 8500 rpm
  • Compression: 10.6:1
  • Bore: 81mm (3.2 in)
  • Stroke: 87.2 mm (3.4 in)
  • Rod Length: 137.9 mm (5.4″)
  • Rod/Stroke Ratio: 1.58
  • Displacement: 1,797 cc (109.7 cu in)
  • Transmission: S80 with LSD (limited slip differential)

Overall, the B18C5 is a very fast motor equipped with a LSD transmission to catch traction right from the dig. These motors are one of the rarer ones out of the three so they are pretty difficult to find. Not only difficult but purchasing the B18C5 can be expensive! As I stated earlier, these are one of Honda’s strongest B-series motor and they are definitely nothing to play around with! If you get your hands on an opportunity to purchase a Type-R, by all means, go for it, it will be worth it!

So now you know about the three main motors that come equipped with Integras, the question now is…

How Do I Find Out What Motor Is In My Integra?

Simple! Obviously one of the ways is to look at your title of your vehicle and see what kind of model your Integra is. The RS, LS, GS, SE models come with the B18B1, the GSR model come with the B18C1, and lastly, the Type-R model come with the badass B18C5.

Another way to make sure what motor is in your Integra is to look at the engine block stamp. It is located right where your head meets the block on the left side.

Integra Block Stamp Location
photo credit: Black via photopin(license)

But then again, YOU MAY run into some instances where the block and head don’t match if you purchased an Integra already built. Reason being is because B-series are basically all interchangeable. I will go more into details with that on a later post but yes, they are interchangeable, crazy right?


Well there you have it! Now you know the basics of the three different engines that come equipped with the Integras, and how to identify what motor you have! Thank you for viewing Acura Honda engine specs! I hope this shed some light of information for some that wanted to know the specs for their Integra!

Leave a comment below if you have anything to add!


Johnny M. Signature Official



16 thoughts on “Acura Integra Engine Specs

  1. It was the last question as to swapping b18c1 into ls chasis other than wiring the vtech in what other customization will I have to commit to for it to be 100% finctional?

  2. Your passion for integras and Honda is awesome! You’re very inspiring, and i just wanted to say you’re doing a great job. Thanks for all the great info!

    1. Hey Sergio! Unfortunately no there is not. I really wish there was because that would be bada**! If you were to slap a VTEC solenoid onto a B18B1, it would do nothing because the B18B1 is not designed to have VTEC inside of the head. The only way to get VTEC is to swap your B18B1 head out for a VTEC head (B16, B18C) Here is a link from a fellow website that explains it pretty well! How to Build a LSVTEC

      Thanks for checking out Integra Mods!

      1. I have a 98 acura integra my Rpm gauge dont work I replace the Rpm gauge and it still dont work I also have two codes on and check engine light on a P0700 and a P0725 I need help to figure out what’s the problem where I can smog my car please anything help. You can also text my cell 916-559-9274

  3. Hi johnny I have a 2 door 94 acura integra gsr
    With a 97 acura integra gsr engine..
    My question is if was told by the previous owner that my engine harness was from a obd1 delsol
    And my vtec don’t go on and I have a check engine light on plus when the car idles
    It the idle goes up and down..
    So I would like to know what kind of engine harness i have and what I can do to fix this problem so I can drive my car every day with no problems…

    1. Hey Johnny, to answer your question on the how the vehicle idles, that could just be a dirty IACV (idle air control valve) that sits behind the intake manifold. You can always remove the coolant lines attached to it, unbolt the 4 size 12 bolts, and spray her down with some brake cleaner! I will soon make a “how to properly clean an IACV” article here soon that will show you in depth how to do that. The IACV is usually always the main culprit for up and down idling. For your ECU issue, if you have a 97 GSR engine in your 94 Integra GSR, I advise you to use a 94-01 Integra GSR engine harness for the easiest route. What you can do is check your VTEC solenoid and see if it is even plugged in. So to sum it up, find a 94-01 Integra GSR harness and get a matching ECU for that harness and you should be fine. I am no expert in ECU’s and Engine Harness’s lol but I hope you get everything worked out. Thank you for checking out Integra Mods!

    2. Hey i dont know how old this post was but i had the same vtec problem. The pig tail for the oil pressure sending unit was bad. Pulled one off ANY vtec motor and it worked or amazon has them for around $10. I bought the new one and couldnt wait so pulled one off a newer accord for a 99 gsr. Same pigtail

  4. Ei bro im planning to build a turbo civic but im still debating if i go k series or b series. But i know that kswap is way more pricey than bseries.

    Can you give me some tips for b series like should i go straight gsr motor and turbo it or gsr block with b16 head. Thanks!

    1. Well you are right k-series is the way it’s a proven fact in my eyes …
      But if you going b-series is also another way to go if you are not trying to spend a lot of money..but I would like to say that first set a goal on what kind of hp you want, and if it’s going to be your daily driver vehicle..
      Expecially if you are thinking on boosting a gsr
      I have seen b-serious gsr with Forge pistons and eagle connecting rods with a t3/t4 pushing 500+hp easily well I hope this was helpful and
      Good luck on your build..

  5. My gsr with b18c1 has two failing cylinders. Would it be possible to swap to b18b1 from a automatic ls? Would it be a strait across swap? If not, what else would I need? Thanks

    1. Hi L! Sorry to hear that two cylinders went out! But to answer your question, YES! You could swap in a long block (shortblock+head) from an automatic LS B18B1, and mechanically everything should bolt right up straight across.. LS motors with GSR transmissions are actually pretty quick ;)! Only issue I can think of that you will run to is that you will throw a Check Engine Light though due to the reason you won’t have any of the VTEC harness hooked up. B18B1 does NOT have a VTEC Solenoid! You might have to run an LS ECU (engine controller unit) if you are bothered by the check engine light.

  6. I currently own a 1999 Acura Integra LS Coupe with the B18B1 motor. Would the B18C1 or B18C5 work in my vehicle if I was to swap?

    1. Hi Jeremiah! Yes, indeed the B18C1 or B18C5 will work with your vehicle if you decide to do a swap! Everything should bolt on using the same motor mounts, but the only issues you will run into is the wiring! Your LS B18B1 does NOT have VTEC, so you would have to wire in the VTEC solenoid with the B18C1/B18C5 along with a few other wiring. I apologize for my late reply, I will definitely get back to building this website and being able to answer your question more thoroughly!


Leave a Reply