Intercooler Pumps

Johnson circulation pumps

This page started as a description of a drop-in replacement intercooler pump for the GMC Syclone and Typhoon. Over the past few years, others have discovered the need for similar circulation pumps for their air/water intercooler systems.

We originally found the Jabsco 59500-0012 circulation pump. We encountered supply issues with that pump about the same time we then discovered the Johnson CM30P7-1 pumps. We now carry only the Johnson pumps.

Johnson (an SPX company) CM30P7-1 [a.k.a. CM30]

Highlights

16 or 20 mm hose connections
Pumps water up to 100° C (212° F)
Magnetic drive means a sealed pump chamber
Rated for continuous duty (motor life 5000 hours)
Weight 0.60 kg (1.32 lbs)
1 year manufacturer's warranty
12 and 24 Volt versions available

Published flow data:

Pressure bar	Flow gal/min	Amps 12V	Amps 24V
0.10	6.9	2.2	1.1
0.20	5.2	2.0	1.0
0.30	2.4	1.7	0.75

Here are scans of a few pages of the instruction manual.

Description	Part Num	Fittings	Voltage	Flow	Price
CM30P7-1	10-24503-03 or 10-24488-03	16mm (5/8 in)	12V	5.2 g/m @ 0.1 bar	$145
CM30P7-1	10-24504-03 or 10-24489-04	20mm (3/4 in)	12V	6.9 g/m @ 0.1 bar	$145
CM30P7-1	10-24504-04	20mm (3/4 in)	24V	6.9 g/m @ 0.1 bar	$145

Johnson (an SPX company) CM90P7-1 [a.k.a. CM90]

Highlights

20 or 38 mm hose connections
Pumps water up to 100° C (212° F)
Magnetic drive means a sealed pump chamber
Rated for continuous duty (motor life 5000 hours)
Weight 2.6 kg (5.75 lbs)
1 year manufacturer's warranty
12 and 24 Volt versions available

Here are scans of a few pages of the instruction manual.

Technical
Pressure and Flow
Dimensions
Wiring

Description	Part Num	Fittings	Voltage	Flow	Price
CM90P7-1	10-24750-01	20mm (3/4 in)	12V	17.2 g/m @ 0.1 bar	$325
CM90P7-1	10-24750-02	20mm (3/4 in)	24V	17.2 g/m @ 0.1 bar	$325
CM90P7-1	10-24664-01	38mm (1.5 in)	12V	30.4 g/m @ 0.1 bar	$325
CM90P7-1	10-24664-02	38mm (1.5 in)	24V	30.4 g/m @ 0.1 bar	$325

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