RootesRacer
Donation Time
70hp engines a make a lot less heat than 92hp engines.
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Id have to check with some Rootes people.. But i don't think the alloy head 1725 vogues and hunters in AU and NZ ran coolers and i know they didn't use alloy sumps
Hey Jarrid, agreed but the Hunter GT in au had the twin Stromberg alloy head 1725 per the alpine and the vogue the compound solex alloy head motor..70hp engines a make a lot less heat than 92hp engines.
, I thought all Arrow range 1725's had an alloy sump. Guess what, I'm not sure the alloy sump will fit the Husky because of how the engine is mounted forward and somewhat over the cross member without some modification. Do you know of anyone who has installed an alloy pan in a Minx, Rapier, or Husky?
Do you mean the audux range rapier?
Tim a slight correction to your statement, the performance motors.. Holbay h120/GLS had the alloy sump and cooler.We don't have oil coolers on either of the Series IV or V that we own, both have normal tin sump. We use our cars regularly covering up to 15,000 miles a year per car including touring Europe in the summer when the cars can get properly hot. Both have had the horn cut outs sealed to change air flow through the rad.
We have never had overheating problems or any issues due to lack of an oil cooler. As stated above the ali head tuned Hunter's that Rootes made in the 1970s didn't have oil coolers or alloy sumps and the engines were very similar. If I had an unused oil cooler knocking around I would fit it but I would not go out of my way to find one or worry if I didn't have one. The Series V has been like that since 1983 with no problem.
Tim R
On the HP ratings... The later 1725s were measured with a more honest and accurate ( representative) system..More horsepower = more heat.
The cast-iron head models put out about 20 fewer HP. The Arrow Range, aluminum head 1725's were also rated a few (4 or 5?) less HP than the Series V. I'm guessing that's why Rootes initially thought they could get away with no provision for an oil cooler on the Arrow Range.
The Arrow Range 1725's were still likely a few horses short of the Series V's 'cause of the narrower intakes. Wouldn't surprise me if the CDSE's also somehow knocked off a fraction of a horse. Anyone ever compare the Alpine GT fastback cam specs vs Series V?