How many cc's or how much HP before..., needing an external oil cooler in 914-6? Options

[horizontally-opposed]

Obviously, a 3.0-liter SC motor is gonna want an external oil cooler, but what about a 2.4E or S? Will an on-case cooler do the job, or is it iffy?

Also, who is using the right inner fender for the cooler spot on a /6? What size engine are you running and what temperature extremes have you seen?

Thanks!

pete

[ArtechnikA]

QUOTE (horizontally-opposed @ Feb 7 2005, 06:39 PM)

Sorry, meant cooler in right REAR fender... So is the consensus that street cars might get away with a 2.4 or so without an external cooler? And does the tail-dragger get better wind/air cooling than the 914-6 did?

rear fender is easy - it doesn't get any airflow to speak of either. i wouldn't waste the time, effort, or AN hose trying that approach unless air works different near your car than everybody else who's tried it ...

no cooler in a 2,4? yes - maybe. depends on when, where, how, and for how long the car is driven. you'll be wanting a good, calibrated oil temp sender and guage, so you get to watch it either way...

it will never be easier to plumb a cooler than when the engine and transmission are out. if they aren't, i'd probably be tempted to drive it and see if it's working for you, keeping in mind that you may be on the edge thermally, and be prepared to back off if you have to. you're planning to use a good quality synthetic oil, right ?

911's cooled better. when the '69 911T engine was put in the /6 it ran closer to the red zone than some liked. so they moved the red zone on the gauge. the 2,0 T had plenty of thermal safety margin. carbed engines tend to run a bit cooler than, say, a CIS engine. a 2,4S was a MFI engine, but MFI in a 914.6 is a challenge, so maybe you're planning something different...