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About Honda Concerto engine
The Honda Concerto was an automobile produced by the British division of the Japanese engine manufacturer, from 1988 to 1994.
Engine choices were:
- 1.4 L (SOHC carb) with 88 hp DIN (65 kW)
- 1.5 L (SOHC SPI) with 90 hp DIN (66 kW) SOHC Straight-4
- 1.6 L (SOHC MPI) with 115 hp DIN (85 kW) SOHC Straight-4
- 1.6 L (DOHC MPI) with 130 hp DIN (96 kW)
- 1.6 L (DOHC carb) with 106 hp DIN (80 kW)
- 1.8 TD Turbo diesel
The Concerto was available in some countries with an SOHC 1.6L dual carburettor engine. Interestingly the Concerto range featured a 1.6 16v SOHC engine, quite an unusual design to have sixteen valves on a single cam.
One difference between the British built and Japanese built Concertos was that the front suspension – versions built in Swindon had MacPherson struts unlike their Japanese counterparts which had double wishbones.
Concerto 1.5L engine 1991, 1992 and 1993
The Concerto 1.5L engined car are classed as a family car by the majority of its drivers. The engines are1492 ccm (90,58 cubic inches) and are situated in the front of the vehicle. Honda Concerto 1.5L engined vehicles have valves per cylinder in a in-line, 4-cyl engine. The Concerto 1.5L engined car has a maximum power output of 90.00 PS (65,67 kW or 88,56 HP) at 6000 Rev. per min. with torque 119.00 Nm (12,04 kgf-m or 87,36 ft.lbs) at 4700 Rev. per min.
Honda Concerto Tuning
The concerto suffers from a rather soggy ride impairing your drive and enjoyment. The chassis is actually very capable so we would say you should improve the handling. We would go to a maximum drop of 35-40mm on most models. You risk rubbing on the arches if you go lower than this.
Our aim in Concerto engine tuning should be to increase peak power and Torque at the top end. Enjoy your Concerto to the full with our tuning tips. This family car is actually a good base for a project.
Smaller engines do not provide much of a return in terms of power so start with a bigger engine. Engine swaps are a good option if you have a small engine size. Look to the later VTEC and Type R engines for suitable engine swap candidates.
Honda Concerto Tuning modifications
One of the best mechanical modifications you can do in a Concerto engine is to fit a fast road cam. You will need to ensure that the engine is not starved of fuel so will also need to update the fuelling.
A fuel pressure boost valve will make the car more responsive and respond better. Uprated injectors will enable you to supply sufficient fuel to the engine. A fuel pump will only deliver a finite amount of fuel, so you may need to update this.
Honda Concerto Intake and Exhaust
Breathing modifications are usually next up. Maximum power gains come from a full induction kit. On small engines you will actually lose low down power so we suggest you use a panel air filter instead. Sports exhausts balance the flow of air through the engine. But if your exhaust is too larger (over 2.5 inches bore) you will lose back pressure on most engines.
In nearly all cases of Concerto tuning your OEM clutch will start to slip and this needs to be uprated. NASP engines do not achieve big power gains if you remap them.
Adding forced induction will see big power gains but this is usually too expensive to be cost effective. Turbos are harder to add than supercharger. Turbos give boost in exponential proportion to increasing engine speed and this can make mapping difficult. Superchargers however will give a boost which is proportional to engine speed so is easier to map. To cope with forced induction you will usually need to decrease the compression ratio of the engine.
Performance clutches
The clutch takes the engine power, and puts this down through the drive shaft, to the driven wheels on the road but allows you to disengage the engine whilst performing a gear change. Contact like this requires a lot of grip and a fast response. The more engine power you have the harder it is for the clutch to operate. Engine power is potentially lost if the clutch slips, failing to make steady contact with the contact plate when the clutch is first released – power clutches have high friction surfaces and sometimes 2 or 3 contact plates.
The heavy-duty race clutches have less feel and are pretty much on or off. This can make it hard to drive smoothly in traffic or pulling away smoothly on a hill and requires a fair bit of leg muscle. The clutch release spring is somewhat heavier on most race clutches and a Torque cars member found to his cost that clutch cables need to be perfectly aligned and installed or they snap with alarming regularity (It was actually the plastic retaining clip that snapped rather than the cable but the clips come as part of the clutch. A fast road power clutch makes more sense for road use – although the high spec multi plate race solution would seem the best, it is not very well suited to domestic driving for most vehicle types. Most clutches come with a power rating – if your engines output is greater than the rated power of the clutch you will experience clutch slip while you are accelerating and the clutch will wear out very quickly.
What next?
Now that you’ve decided you need a Concerto engine, fill in your details for the car engine details and then we will walk you through our check list.
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