Compression tester for gasoline engine

M-1

M-1

The compression tester is compact size and easy tohandle. It can be used for extensive applications byfitting either the provided straight or curved stemdepending on the position of a plug hole.The use of theoptional system separately sold allows the use of thistester for a wider variety of vehicle types.


Meter
diameter
Max. scale Min. scale Overall
length
Accessories Case Total
weight
φ50mm 1.5MPa
(Approx.
15kgf/c㎡)
0.05MPa 130mm Straight stem
83mm
Curved stem
85mm
Metal case
W235×
D75×
H45mm
Approx.
700g

☆Optional adapter

  • Special stem:This stem can also be used with Model GU-3H shown below.
  • 18mm diameter V rubber

G-1C

G-1C

Measurement can be made by a single person since thetester can be secured in close contact with a measuredobject by inflating the 14mm rubber at the end of thetester by turning the adjust nut (only when used for the14mm spark plug). In the case of a vehicle with a plugother than the 14mm spark plug, the tester can be used asa manual pressure contact type by replacing the 14mmrubber with the provided V rubber.

Meter
diameter
Max. scale Min. scale Overall
length
Accessories Case Total
weight
φ60mm 2.5MPa
(Approx.
25kgf/c㎡)
0.1MPa 220mm 14mm rubber
(spare) (2)
V rubber (1)
Metal case
W235×
D75×
H45mm
Approx.
800g

☆Optional adapter

  • 18mm diameter V rubber

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GU-2C

GU-2C

Measurement can be made by a single person since this testercan be secured in close contact with a measured object byinflating the 14mm rubber at the end of the stem by turning theadjust nut (only when used for the 14mm spark plug). Since thestem can be easily attached and detached by means of theadjust nut, the tester can be used with various vehicle types byfitting either the long stem or short stem depending on theposition of a plug hole. In the case of a vehicle with a plugother than the 14mm spark plug, the tester can be used as amanual pressure contact type by replacing the 14mm rubber withthe provided V rubber.

Meter
diameter
Max. scale Min. scale Overall
length
Accessories Case Total
weight
φ60mm 2.5MPa
(Approx.
25kgf/c㎡)
0.1MPa 970mm Long stem
220mm
Short stem
99㎜
14mm rubber
(Spare) (2)
V rubber (2)
Metal case
W290×
D165×
H70mm
Approx.
2,100g

☆Optional adapter

  • ・Special stem 150mm、200mm、250mm、300mm、400mm、500mm
  • ・18mm diameter V rubber

GU-3H

GU-3H

The attached hose allows convenience in setting thecompression tester.The tester can be used for extensive applications byfitting any of the three provided stems (long, short orcurved stem) depending on the position of a plug hole.The use of the optional system separately sold allows theuse of this tester for a wider variety of vehicle types.


Meter
diameter
Max. scale Min. scale Overall
length
Accessories Case Total
weight
φ75mm 2.5MPa
(Approx.
25kgf/c㎡)
0.1MPa 970mm Long stem
140mm
Short stem
83㎜
Curved stem
85mm
V rubber (2)
Metal case
W290×
D165×
H70mm
Approx.
1,850g

☆Optional adapter

  • ・Special stem
  •   Straight stem 200mm、300mm、400mm、500mm
  •   Curved stem 200mm、300mm、400mm、500mm
  • ・18mm diameter V rubber

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GU-53C

GU-53C

Measurement can be made by a single person since thiscompression tester can be secured by screwing the hoseadapter into the spark plug hole. Screwing of the hose adapterinto the spark plug hole can be performed just by hand requiringno tool. The hose adapter can be connected to anddisconnected from the tester main body by means of a couplerquickly and easily. The long hose adapter as long as 400mmallows easy connection even to a deeply set spark plug like theDOHC.
With three types (10mm,12mm,14mm) of hose adapters provided.this tester can be used with most of reciprocating engines from atwo-wheeled vehicle to a four-wheeled car.

GU-51C

GU-51C

This tester is an equivalent of GU-53C shown onthe left and provided with only one hose adapterfor the 14mm spark plug often used for four-wheeledcars.
※Purchase a hose adapter separately soldaccording to need.

Specifications

Model Meter
diameter
Max. scale Min. scale Overall length
of tester body
Provided adapter
(Overall length)
Accessories Case Total
weight
GU-53C φ60mm 2.5MPa
(Approx.25kgf/c㎡)
0.1MPa 170mm For 10mm plug(400mm)
For 12mm plug(400mm)
For 14mm plug(400mm)
Spare
O-ring for 10、12、and 14mm
(one for each)
Metal case
W290×
D165×
H70mm
Approx.
1,850g
GU-51C For 14mm plug(400mm) Spare
O-ring for 14mm (1)
Approx.
1,500g

☆Optional adapter

  • For 18mm spark plug / For 8mm spark plug
  • For 14mm taper-seal type spark plug (Ford)
  • [For a special adapter for special spark plug etc., contact us for detailed information.]

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GU-6

GU-6

Many of natural gas fueled cars like CNG cars are subjected tohigher compression pressure compared with gasoline cars.This compression tester allows the measurement of highercompression pressure for these vehicles.To enhance the heat resistance required for the measurement ofhigher compression pressure, heat dissipation performance isimproved by the use of heat-dissipating materials and shape on theend part.
Measurement can be made by a single person since this tester canbe secured by screwing the hose adapter into the spark plug hole.This tester can be used for various types of plugs by fitting any of thethree types (10mm, 12mm, 14mm) of the provided plug adapters.

Specifications

Model Meter diameter Max. scale Min. scale Overall length of tester body Provided adapter (Overall length) Case Total weight
GU-6 φ60mm 4MPa
(Approx.40kgf/c㎡)
0.1MPa 370mm For 10mm plug (65mm)
For 12mm plug (65mm)
For 14mm plug (65mm)
Metal case
W290×D165×H70mm
Approx.1,500g

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