Thank you. That is the one I put on the engine and then found the other.
C
----- Original Message -----
From: "Randall" <tr3driver@ca.rr.com>
To: <triumphs@autox.team.net>
Sent: Thursday, March 11, 2010 2:35 PM
Subject: Re: [TR] Water pump housing inlet/outlet question
>> Everything is the same except the opening on the one that is
>> on top has two different opening sizes: 3/8" & 5/8". Which
>> one is correct?
>
> That would be the opening for the bypass line (short hose to the
> thermostat
> housing), correct?
>
> IIRC, the larger hole was found on the TR3 engines. They made it smaller
> later, to force more water to flow through the radiator. Lots of folks
> add
> even more restriction, for the same reason. At the moment, I've got mine
> totally blocked (and a hole through the thermostat so some water always
> flows through the radiator).
>
> Given the choice, I'd probably go for the smaller opening.
>
> -- Randall
>
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