Turbo oil feed adaptor how to work out thread types

[James5]

As per title I am trying to work out some thread types on my turbo oil feed as I have a GT28r and I have the special M11x1.0 core adaptor that goes into the turbo now I am looking for an adaptor to fit onto the -4an male end of this. I am obviously looking for a -4an female adaptor.

My question is how do I work the original adaptor size that fitted my oil feed so that I can find a suitable adaptor to connect the -4an to what ever my original adaptor into my oil feed line is / was?

Is there a way to measure, work out thread type, pitch how do I tell if it's JIC, BSP, NPT etc??

I understand that AN (Army Navy) thread is the same as JIC thread only difference is the quality of the AN being much better and stronger by over 40%

I could take it to Pirtek but with my hours I am working they are closed so unable to get to them.

Does any body know of or how I can work out thread types and of any links that give me advice on how to do it.




Cheers James

[The Baron]

As per title I am trying to work out some thread types on my turbo oil feed as I have a GT28r and I have the special M11x1.0 core adaptor that goes into the turbo now I am looking for an adaptor to fit onto the -4an male end of this. I am obviously looking for a -4an female adaptor.

My question is how do I work the original adaptor size that fitted my oil feed so that I can find a suitable adaptor to connect the -4an to what ever my original adaptor into my oil feed line is / was?

Is there a way to measure, work out thread type, pitch how do I tell if it's JIC, BSP, NPT etc??

I could take it to Pirtek but with my hours I am working they are closed so unable to get to them.

Does any body know of or how I can work out thread types and of any links that give me advice on how to do it.

Cheers James

good luck with that... :eek:
been through exactly the same problems with our T28 and abandoned -4an as could not find anyone to mate it up to the original pipe work. they are just totally different and very few people have the requirement to mate up -4ans to old school plumbing. Our experience was there is no such adaptor on the shelf. maybe others can tell you differently, everyone i spoke to (hydraulics places, -4ans stockists) said mmm no such thing.

we ended up getting a m11x1.0 which was NOT -4ans on the other end and a second joint that fitted on to this and to our standard oil feed pipe. simple and effective. and it works. :-)

PS: you can buy thread measuring tools to measure threads per inch, pitch and even stuff like thread depth (crest to root - usually not needed).
http://www.starrett.com/pages/1441_measuring_threads.cfm
my guages came as part of my axminster tap and die set.
http://www.axminster.co.uk/axminster-metric-imperial-thread-pitch-gauge-prod23483/

cheers

baron

[Fordy]

http://www.speedflow.co.uk/

they will have everything you need :)

[James5]

Well all sorted,

I managed to get an anodised -4an female to -4an female connection from ebay supplier and I struggled to work out the adaptor to mate with my oil feed so quick drive to my local Pirtek in Crawley whom were very helpful and I got an adaptor for about £3.00 went 4/16 JIC male to 1/4bsp male (my oil feed connection type) and job done.

JIC is the same as AN thread type's:agree:

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=370454982335&ssPageName=STRK:MEWNX:IT