Mocal Oil Cooler

Overview

The most popular oil to air coolers are the pressed plate range, which were first made in the late 50's. These coolers, built to our specification since 1965 must rate as the single most commonly used component on racing cars world wide.

The cooler consists of a variable number of aluminium pressed plates forming oil ways and end tanks, the oil ways contain turbulators. These do not only break down boundary layer effects in the flow to obtain maximum heat dissipation without undue pressure drop but also, because they are brazed to both surfaces of the plates, hold them together under pressure. The oil ways are interspersed with aluminium strip louvered and formed into corrugations to provide airways.

The design is beautifully simple and efficient and most suitable for mass production, but it is restricted to a 2" thickness and a limited amount of lengths. The secret of the success of the Mocal cooler is our insistence on the highest standards of build quality allied to a rigorous inspection system. In particular the attention paid to the accuracy of the pressing tools to ensure the closest contact of the plates during the "Nocoloc" brazing process ensures our superiority over look-a-likes from the Far East.

Maximum working pressure on the standard range of coolers is 10 bar (150psi) although each cooler is tested to 11.5 bar (170psi) this is adequate for all but the most arduous motoring applications, however some customers prefer a higher pressure rating, for instance where the pressure by pass valve does not provide enough protection as in high rpm in cold start up conditions or on dry sump installations.

Weights and Measurements

The coolers are available in various heights and two widths, 115mm matrix or 235mm matrix but only one, 51mm, front to back measurement. The height of a cooler is usually referred to in rows, these are the number of oil ways including top and bottom plates which carry oil.

Sometimes the oil cooler may be supplied in silver colour due to stock options