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Toyota K engine#K

{{About|the Toyota engine|the Honda engine series of the same name|Honda K engine}}

{{Use British English |date=July 2022}}

{{Use dmy dates |date=July 2022}}

{{Refimprove|date=December 2009}}

{{Infobox automobile engine

| name = Toyota K engine

| image = Toyota 4K Engine in Toyota Corolla DX (KE70).jpg

| caption = 4K engine in a Corolla DX

| manufacturer = Toyota

| production = 1966–2007

| configuration = Naturally aspirated straight-four

| valvetrain = OHV 2 valves per cylinder

| timing = Timing chain

| block = Cast iron

| head = Aluminium alloy

| fuelsystem = Carburettor
Multi-port fuel injection

| fueltype = Petrol

| oilsystem = Wet sump

| coolingsystem = Water-cooled

| power = {{convert|45-83|PS|kW hp|0|abbr=on|lk=on}}

| torque = {{convert|66-147|Nm|kg.m lbft|0|abbr=on|lk=on}}

| successor = Toyota E engine (up to 1.3 L models)

}}

The Toyota K series is an inline-four engine that was produced from 1966 through 2007. It is a two-valve pushrod engine design. It was originally built from the Toyota Kamigo plant in Toyota City factory in Japan.

All K series are non-crossflow engines – the inlet and exhaust manifolds are on the same side. They have cast iron blocks and aluminium alloy heads, with a crankshaft supported by five main bearings. K series motors have both hydraulic tappet or hydraulic valve lifters, solid lifters and 1.5 ratio rockers with an adjustment thread for tappet clearance. 7K engines were released with only the hydraulic valve lifters from factory, whereas 4K and 5K engines were made with both hydraulic and solid lifters (depending on year and which model vehicle.)

{{anchor|K-B}}

K

File:1966 Toyota K Type engine front.jpg

The 8-valve OHV {{convert|1077|cc|L|1|abbr=on|order=flip}} K was produced from 1966 through 1969. A similar K-B was produced from 1968 through 1969, the -B designates twin carburettors. Thus equipped, the engine produces {{convert|73|PS|kW hp|0|abbr=on}} at 6600 rpm.{{cite web | url = http://www.toyota.co.jp/jpn/company/history/75years/vehicle_lineage/car/id60011785/ | script-title=ja:2代目 パブリカ |trans-title=Second generation Publica | work = トヨタ自動車75年史 [75 years of Toyota history] | language = ja | publisher = Toyota Motor Co. }} The Publica SL received this more powerful version.

Applications:

{{clear}}

2K

The eight-valve OHV {{convert|993|cc|L|1|abbr=on|order=flip}} 2K was produced from 1969 through 1988. The cylinder bore and stroke was {{convert|72x61|mm|2|abbr=on}}.

Output in 1978 was {{convert|47|hp|kW PS|abbr=on|0|order=flip}} at 5800 rpm, and {{convert|6.7|kgm|abbr=on|0|order=flip}} at 3800 rpm.{{cite journal | journal=Tekniikan Maailma Magazine |language=fi |year=1978 |issue=#15}} In 1983, New Zealand received a version with {{convert|40|kW|PS hp|0|abbr=on}} at 5800 rpm, while Europe received a version with {{convert|33|kW|PS hp|0|abbr=on}} at 5600 rpm, both with a maximum torque of {{convert|6.7|kgm|0|abbr=on|order=flip}} at 4000 rpm.

Applications:

{{anchor|3K|3K-B|3K-BR|3K-D|3K-C|3K-H|3K-J|3K-HJ|3K-U}}

3K

File:Toyota 3K engine.jpg

The eight-valve overhead valve {{convert|1166|cc|L|1|abbr=on|order=flip}} 3K was produced from 1969 through 1977. Cylinder bore and stroke was {{convert|75x66|mm|in|2|abbr=on}}.

The 1969 through 1975 3K-B was a twin-carburetor version. The California-spec 3K-C (1977–1979) and 3K-H were other available versions.

;Applications:

;Specifications:

class="wikitable"
Code

! PS

! kW

! HP

! at rpm

! kgm

! Nm

! lb-ft

! at rpm

! Compr. Ratio

! Comments

rowspan="3" | 3K

| {{convert|68|PS|kW hp|0|disp=table}}

| 6000

| {{convert|9.5|kgm|Nm lbft|0|disp=table}}

| 3800

| rowspan="3" | 9.0:1

|

{{convert|58|PS|kW hp|0|disp=table}}

| 6300

| {{convert|8.1|kgm|Nm lbft|0|disp=table}}

| 3900

|style="background-color:#C8D7EA" | (DIN){{citation | type = brochure | title = Toyota Corolla 1200 | url = https://autocatalogarchive.com/wp-content/uploads/2019/05/Toyota-Corolla-1973-GER.pdf | publisher = Toyota Deutschland | location = Germany | archive-url = https://web.archive.org/web/20221222170047/https://autocatalogarchive.com/wp-content/uploads/2019/05/Toyota-Corolla-1973-GER.pdf | archive-date = 2022-12-22 | language = de | page = 6 | date = February 1973 }}

{{convert|73|hp|PS kW hp|0|disp=table|order=out}}

| 6000

| {{convert|10.3|kgm|Nm lbft|0|disp=table}}

| 3800

|style="background-color:#C6E2BE" | Export (SAE gross){{citation | type = brochure | title = Toyota Corolla: One of the Toyota Collection | page = 12 | url = https://www.veikl.com/d/Toyota-Corolla-Brochure-UK-1972-EN-52723/12 | publisher = Toyota (G.B.) Limited | location = Croydon, Surrey | date = 1972 }}

rowspan="3" | 3K-B

| {{convert|77|PS|kW hp|0|disp=table}}

| 6600

| {{convert|9.6|kgm|Nm lbft|0|disp=table}}

| 4600

| rowspan="3" | 10.0:1

| Twin carburettors, high octane

{{convert|64|PS|kW hp|0|disp=table}}

| 6200

| {{convert|9.0|kgm|Nm lbft|0|disp=table}}

| 4000

|style="background-color:#C8D7EA" | (DIN)

{{convert|83|hp|PS kW hp|0|disp=table|order=out}}

| 6600

| {{convert|10.4|kgm|Nm lbft|0|disp=table}}

| 4600

|style="background-color:#C6E2BE" | Export (SAE gross)

3K-BR

| {{convert|74|PS|kW hp|0|disp=table}}

| 6600

| {{convert|9.5|kgm|Nm lbft|0|disp=table}}

| 4600

| rowspan="2" | 9.0:1

| As 3K-B but for regular octane

3K-C

| {{convert|59|PS|kW hp|0|disp=table}}

| 5800

| {{convert|8.7|kgm|Nm lbft|0|disp=table}}

| 3800

|style="background-color:#C6E2BE" | California emissions controls (SAE net)

3K-D

| {{convert|73|PS|kW hp|0|disp=table}}

| 6600

| {{convert|9.6|kgm|Nm lbft|0|disp=table}}

| 4200

| 10.0:1

| High compression, single carburettor

rowspan="2" | 3K-H

| {{convert|71|PS|kW hp|0|disp=table}}

| 6000

| {{convert|9.7|kgm|Nm lbft|0|disp=table}}

| 4200

| rowspan="5" | 9.0:1

| High octane

{{convert|55|PS|kW hp|0|disp=table}}

| 6000

| {{convert|8.5|kgm|Nm lbft|0|disp=table}}

| 3800

|style="background-color:#C8D7EA" | (DIN)

3K-J{{citation | script-title=ja:トヨタオート |trans-title=Toyota Auto | language = ja | publisher = Toyota | type = catalog | page = 13 |date=June 1977 | id = 041183-5206 }}

| {{convert|64|PS|kW hp|0|disp=table}}

| 5800

| {{convert|9.2|kgm|Nm lbft|0|disp=table}}

| 3600

| Japanese emission controls for commercial vehicles

3K-HJ

| {{convert|67|PS|kW hp|0|disp=table}}

| 5800

| {{convert|9.4|kgm|Nm lbft|0|disp=table}}

| 3600

| Japanese emission controls for commercial vehicles (Publica Van/Pickup, Starlet Van)

3K-U

| {{convert|64|PS|kW hp|0|disp=table}}

| 5800

| {{convert|9.2|kgm|Nm lbft|0|disp=table}}

| 3600

| Japanese emission controls (TTC-C) ("Toyota Total Clean-Catalyst")

3K-R

| {{convert|183|PS|kW hp|0|disp=table}}

| 9000

| {{convert|19.6|kgm|Nm lbft|0|disp=table}}

| 8200

| 13.0:1

| TRD Racing circuit engine

= 3K-R =

The 3K-R engine, also known as the 137E, was a special version of the standard 3K fitted to the Toyota Starlet (KP40) for use in touring car racing in Japan. The engine was developed by TOM’S in 1974 and was one of their first major developments as a tuner for Toyota. {{Cite news |date=2017-09-14 |title=1974 Toyota Starlet - Sky Full Of Stars |url=https://www.motortrend.com/features/1709-1974-toyota-starlet-sky-full-of-stars/ |archive-url=http://web.archive.org/web/20240315124752/https://www.motortrend.com/features/1709-1974-toyota-starlet-sky-full-of-stars/ |archive-date=2024-03-15 |access-date=2025-02-12 |first=Jofel |last=Tolosa |work=MotorTrend |location=US}} The 3K-R has a 16 valve dual overhead camshaft cylinder head with a compression of 13:1 and was fuelled by a Nippon Denso built mechanical fuel injection system. The engine was also bored out to 1.3 L (1293 cc) and had a dry sump oil system. The engine produced {{cvt|180|hp|kW|order=flip|0}} at 9000 rpm.{{Cite web |title=Tom's 3K-R Engine 180bhp @ 9000 RPM 1.3l |url=http://www.quartermile.ws/forum/index.php?topic=7185.0;wap2 |access-date=2025-02-12 |website=Quartermile Custom Cars |location=US}}

{{anchor|4K|4K-C|4K-E|4K-U}}

4K

File:4K-U.jpg

The {{convert|1290|cc|L|1|abbr=on|order=flip}} 4K was produced from 1977 through 1989. Cylinder bore and stroke was {{convert|75x73|mm|in|2|abbr=on}}. It was an 8-valve OHV engine.

In 1980, the 4K produced {{convert|58|hp|kW PS|abbr=on|0|order=flip}} at 5250 rpm. From 1983 through 1984, output was {{convert|62|hp|kW PS|abbr=on|0|order=flip}} at 5600 rpm and {{convert|9.9|kgm|abbr=on|0|order=flip}} at 3600 rpm.

The 1981 and 1982 California-spec 4K-C produced {{convert|58|hp|kW PS|abbr=on|0|order=flip}} at 5200 rpm and {{convert|9.2|kgm|abbr=on|0|order=flip}} at 3600 rpm. Torque was up to {{convert|10.2|kgm|abbr=on|0|order=flip}} at 3400 rpm for the fuel injected 1982 through 1984 4K-E. The Japan-spec 4K-U produced {{convert|74|hp|kW PS|abbr=on|0|order=flip}} at 5600 rpm and {{convert|10.7|kgm|abbr=on|0|order=flip}} at 3600 rpm in 1982. Available in hydraulic and solid lifter configurations

Applications:

{{anchor|5K|5K-J}}

5K

Image:5K-C.JPG

File:5K engine.jpg]]

The {{convert|1486|cc|L|1|abbr=on|order=flip}} 5K was produced from 1983 through 1996. Typical output is {{convert|

74|hp|kW hp PS|abbr=on|0|order=out}} at 5600 rpm. Bore and stroke is {{convert|80.5x73|mm|2|abbr=on}}. It was available with either 4- or 5-speed manual transmissions. Like the smaller 4K model, it uses hydraulic lifters as well as solid lifters for the pushrod.{{clarify|reason=how does it use both solid and hydraulic lifters?|date=June 2019}}

Applications:

  • 1983.08-1987.10 Toyota Carina Van (KA67V 'Van') 5K-J
  • 1983.05-1987.08 Toyota Corolla Van (KE74V) 5K-J{{ cite web | url = http://www.toyota-global.com/company/history_of_toyota/75years/vehicle_lineage/car/id60003567/index.html | work = 75 years of history: Vehicle lineage | title = 5th Corolla Van | publisher = Toyota | access-date = 2013-11-16 }}
  • 1983.10-1987.12 Toyota Corona Van (KT147V 'Van') 5K-J, {{convert|83|PS|kW hp PS|0|abbr=on|order=out}} at 5,200 rpm[http://members.iinet.com.au/~stepho/manuals/Corona/jdm%20list.gif List of RT140 Coronas sold in Japan]. Toyota Motor Co., No. 261150{{Citation | title = New Corona Van (Catalog) |date=August 1985 | publisher=Toyota Motor Corporation | location=Japan | id= No.121131-6008 }}
  • Toyota Liteace KR27 Van
  • Toyota Liteace KM36 Van {{convert|49|kW|hp PS|abbr=on|0}} at 4800 rpm, {{convert|11.7|kgm|0|abbr=on|order=flip}} at 3200 rpm
  • Toyota Kijang/Tamaraw
  • Toyota TownAce KR41 Van
  • Toyota Forklift (late 1980s-early 1990s model)

{{clear}}

{{anchor|7K-E}} 7K

Image:1996 Toyota 7K Engine.jpg

The {{convert|1781|cc|L|1|abbr=on|order=flip}} 7K was first introduced in 1983. Cylinder bore and stroke was {{convert|80.5x87.5|mm|in|2|abbr=on}}. Output was {{convert|80|hp|kW PS|abbr=on|0|order=flip}} at 4600 rpm and {{convert|14.2|kgm|abbr=on|0|order=flip}} at 2800 rpm while the EFI version which can be found in Toyota Kijang KF80 produces {{convert|83|hp|kW PS|abbr=on|0|order=flip}} at 4600 rpm and {{convert|15|kgm|abbr=on|0|order=flip}} at 3200 rpm.

The Engine was available with a 5 speed manual & 4 speed automatic transmission. Available in both fuel injected and carburetted configurations, the 7K produces much more power and torque compared to the other K engines however it is a lot less 'rev happy' due to having such a long stroke.

7K-E is available in KR42 Townace SBV vans (1997–2007) using a large G52 5 speed gearbox (same bellhousing to box pattern as W55), or automatic.

Applications:

References

{{commons category|Toyota K engines}}

{{reflist}}

See also

{{Toyota K Engine}}

{{DEFAULTSORT:Toyota K Engine}}

K

Category:Straight-four engines

Category:Gasoline engines by model