Honda F20B Engine Guide: The JDM 2.0L DOHC VTEC Blue Top and Accord Swaps

The F20B is a 2.0L DOHC VTEC engine that Honda built for Japan. It makes about 200 PS and revs close to 7,800 rpm. It can also fit a 1998 to 2002 US Accord with some work. This guide covers specs, cars, swap notes, and buying tips.

Most US owners know it as the blue top. The name comes from its blue valve cover. We import F20B engines at JDM Engine Virginia, and you can see them with the rest of our Honda and Acura engines.

What Is the Honda F20B Engine?

Honda made the F20B for sixth generation Accord and Torneo models sold in Japan. It’s a 1,997 cc inline four with two camshafts and 16 valves. It also uses VTEC.

VTEC switches between a mild cam profile and a wilder one. That lets one engine work well at low rpm and pull hard up high. Honda explains the idea on its global tech page.

US Accords never got this engine. They came with the 2.3L SOHC F23A instead. That’s why many Accord owners look at the F20B as an upgrade. Some fans call it a smaller cousin of the H series engines, but the two aren’t the same.

Swappers like the F20B for a simple reason. It gives a US Accord a high revving DOHC engine without a big jump in size. It also keeps the car feeling like an Accord, not a project car. That balance explains why people still ask about it today.

F20B Specs: 2.0L DOHC VTEC Horsepower and Redline

These numbers cover the manual version. They come from Japanese spec sheets for the Torneo and Accord.

The automatic makes less power. That version came in the Accord SiR with Honda’s S Matic gearbox.

The manual works out to about 100 PS per liter. That’s a high number for a naturally aspirated 2.0L. Honda got it from revs, not boost. The short 88 mm stroke helps the engine spin up. Spec sheets vary a bit by source, so treat the redline as a close figure, not an exact one.

Which Cars Came With the F20B: Accord SiR and Torneo SiR

Two Japanese sedans used the F20B. They share a platform and look much alike.

• Accord SiR: sold through Honda Clio dealers, with a manual or an automatic.

• Torneo SiR: sold through Verno and Primo dealers, with slightly different front styling.

The two cars are almost the same, manual versions got the full 200 PS while automatics got 180 PS.

Our 1998 to 2002 Accord SiR F20B engine comes from this group of cars.

F20B vs F23A vs H22A: Which Honda Engine Is Which

These three engines get mixed up a lot. Look at table below as a quick side by side.

The F23A is the engine most US Accords came with. It’s smooth and easy to live with, but it makes less power. Our Honda F23A guide covers it in full.

The H22A has more displacement than the F20B. That usually means more torque. It often costs more to find, too.

Swapping an F20B Into a 1998 to 2002 US Accord

An F20B can go into a US Accord from these years. Builders report that it sits in the same engine bay as the F23A. The wiring takes the most effort.

You should check the local rules first. The EPA treats some engine swaps as tampering unless the finished car matches a certified setup. Its tampering policy page explains how that works. Some states can be stricter, so ask your state inspection office before you buy.

Plan for these parts:

• Engine mounts and brackets

• Power steering, alternator, and A/C fitment

• Intake and exhaust clearance

• Cooling hoses and sensors

A manual car makes the job easier. An automatic swap is possible, but it takes more planning.

If you haven’t done a swap before, talk to a Honda shop that has. A shop that knows these cars can spot problems early. That can save you days of trial and error.

F20B Swap Wiring, ECU and Transmission Notes

Start the process with the harness because a JDM engine comes from a right hand drive car. Its wiring may be too short for a US Accord. Many builders use the US harness and edit it.

Builders also report two common edits. The F23A reads engine speed from a crank sensor, while the F20B uses the distributor. The fuel pump signal may need a pin change as well. Double check both against a wiring diagram for your exact year.

Next, think about the ECU. Some builders say the stock ECU can be picky with this engine. Plan on a matching ECU or a proper tune.

For the transmission, a manual Accord is the easy path. Many owners also look for the five speed that came with the manual F20B car. Ask the seller what’s included before you pay.

Is the F20B Reliable? Common F20B Issues

Honda built this engine well. Still, every unit is now over 20 years old. Age causes more trouble than design does.

Watch for these items:

• Oil seeps from the valve cover or VTEC solenoid gaskets

• Worn spark plug tube seals, which can let water or oil into the wells

• Carbon buildup in the intake and EGR passages

• An old timing belt and water pump

Most of these are cheap fixes. So, replace the belt, pump, and seals while the engine is out of the car. That small step can save you a second teardown.

Fresh fluids also help, therefore, change the oil and coolant, and think about checking valve clearance. These engines are old, and you rarely know their full service history. A baseline service gives you a clean start.

Buying a JDM F20B Engine

Not all F20B engines are equal. Ask questions before you pay, such as:

• Mileage: ask for proof, such as the tag or auction sheet.

• Compression test: a video is a good sign.

• Engine code: confirm that it reads F20B.

• What’s included: engine only, long block, or with ECU and harness.

• Warranty: read the terms before you buy.

We list the F20B in our shop with photos and details. Take a look at this F20B blue top engine or browse our Honda and Acura engines. Send us your VIN if you’re not sure what fits.

Shipping is also important. Engines usually travel by freight, so ask about delivery time and whether the price includes it. Also check the box when it arrives. Note any damage before you sign.

Honda F20B Engine FAQ

Is the F20B a DOHC VTEC engine?

Yes. The F20B is a 2.0L DOHC VTEC four cylinder with two camshafts and 16 valves. VTEC switches to a higher lift cam profile at higher rpm for more power. Honda built it for the Japanese Accord SiR and Torneo SiR. You can spot it by the blue valve cover.

Will an F20B fit a 1998 to 2002 Accord?

Usually. Builders report that it fits the same engine bay as the US F23A. The hard parts are wiring, the ECU, and mounts. A manual car is easier than an automatic. Check your state’s emissions rules before you start the swap.

F20B vs H22A: which is faster?

The H22A usually has the edge. It has more displacement and often more torque, and the Accord Euro R version makes about 220 PS. The F20B makes about 200 PS and revs freely. In a similar car, the gap is small. Gearing and tuning matter just as much.