Six conversion engine oil cooler quesdtion Options

[sleepdoc]

Hi All,

I have a question about the modifications done to the engine mounted oil cooler when a 3.2l is mounted in a 914.

Rich Johnson posted an excelent picture of the modification in a recent post and I include it here.

My 3.2l cooler was already modified when I got the engine. Now I want to chanfge the routing of the oil line where it connects to the cooler, because it interferes with taking the valve cover off. The oil line is a stainless braided one with Earl's AN type fittings on the end. When Rich says AN or metric threads for the conversion, is there a type of oilline that wants metric threads used in this situation, or do AN fittings have metric threads? How can I figure out what thread I need so I can buy or have fabricated a short extender for the oil cooler output?

- 914-6 style oil cooler modification (metric or AN)


thanks Mark

[ArtechnikA]

...Taking the cooler to AN connection on and off will wreck it sooner or later.

AN fittings are designed to be installed and removed repeatedly. unlike NPT, AN fittings do not rely on interference or tapered fits. they do not rely on massive tightness to achieve seal. despite its first-blush similarity, 37-degree AN fittings DO NOT work with 45-degree SAE or JIC fittings.

there are "AN port" fittings that use straight ends like the one pictured, but "most" AN fittings are characterised by their 37-degree flare ends. that one "looks" like an ISO-DIN parallel-thread fitting to me - but the way to know is to pop on a thread gage - or ask the shop that did the conversion what it is.

the mixture of AN and Metric hardware and fittings always makes engineering a modified car interesting - keep good notes !