[Tigers] 90 degree oil filter adaptor

Terry Lawell tlawell at austin.rr.com
Sat Jul 3 18:43:35 MDT 2021


Here is a photo of the adapter that was in my engine block. If you 
measure it with a micrometer, it measures a little bit larger than 1/2".

Terry


On 7/3/21, 7:20 PM, coolvt at aol.com wrote:
> Okay, now someone explain. Is there an adapter that screws into the 
> engine for the oil pressure line? Mark L
>
> In a message dated 7/3/2021 8:14:25 PM Eastern Standard Time, 
> tigers at autox.team.net writes:
> I broke a line from the sending unit one time and to "get by" for a 
> few weeks used a 1/4 NPT  plug from Home Depot. Screwed in perfectly 
> with no leaks.  When I put in a replacement sending unit it threaded 
> in easily with no leaks.  So, I assume the threads were not damaged in 
> any way by the NPT 1/4" plug.  Thus, I never saw any evidence that it 
> wasn't 1/4". Mark L
>
> In a message dated 7/3/2021 6:49:22 PM Eastern Standard Time, 
> tlawell at austin.rr.com <mailto:tlawell at austin.rr.com> writes:
> I agree with you, but this is an original 260 and all of the tools to 
> remove the fittings were matched whitworth sizes and the replacement 
> part is a BSP 1/4 thread.
>
> Terry
>
>
> On 7/3/21, 5:31 PM, Theo Smit wrote:
> The block was threaded 1/4 NPT on the three or four engines I’ve dealt 
> with. None of them were the original 260 but I don’t know why Ford 
> would have threaded that engine differently.
> Theo
>
>     On Jul 3, 2021, at 4:16 PM, Terry Lawell via Tigers
>     <tigers at autox.team.net> <mailto:tigers at autox.team.net> wrote:
>
> Actually, I think it is a BSP 1/4 which is quite different from a 1/4 
> npt. That is what I am trying to clarify.
>
> Terry
>
>
> On 7/3/21, 3:42 PM, coolvt at aol.com <mailto:coolvt at aol.com> wrote:
>
>     Terry, pretty sure that oil fitting that goes into the block is
>     1/4" good old American standard pipe thread. Hope you don't have a
>     problem because I think the fitting should have come out fairly
>     easily.  Mark L
>
>     In a message dated 7/3/2021 3:41:39 PM Eastern Standard Time,
>     tlawell at austin.rr.com <mailto:tlawell at austin.rr.com> writes:
>     Hi Ron,
>
>       It turns out Summit had the right adapter for the kit, the sales
>     person just didn't know it. They have sent the adapter to me and
>     it fits
>     correctly in the block as well as in the kit. The only problem was
>     the
>     oil filter they sent me was incorrect - it hits up against the oil
>     pan.
>     Is it the ph3600 that is slimmer and fits that kit?
>       I also found another problem - the oil line from the oil pressure
>     gauge was cracked and leaking. when I disconnected the oil line
>     fitting,
>     I also took off the fitting that goes into the block. It was very
>     difficult to get off and I am concerned that someone either put a
>     fitting in there with the wrong threads or stripped the threads when
>     they installed it. Do you know what size those threads are? It
>     appears
>     to be a british standard pipe thread. I had to use whitworth
>     wrenches to
>     get both the pressure fitting nut and the fitting to the block
>     off. Any
>     info on these fittings would be much appreciated.
>
>     Cheers, Terry
>
>
>     On 7/3/21, 7:45 AM, Ron Fraser wrote:
>     > Terry
>     >     1st -  I would contact Summit to make sure that oil filter
>     kit did
>     > not come with an adaptor or if it is missing from your kit.
>     > 2nd -  does Summit have the adaptor needed for this kit?
>     >
>     > C20Z 6890-C seems to be the Ford part number for the adaptor -
>     3/4 x16
>     > thread and 1 1/16 x 12 thread
>     > You need to check that this is correct for your oil filter kit.
>     >
>     >
>     https://www.npdlink.com/search/products?search_terms=fitting%2Boil%2Bfilter&
>     > top_parent=200001&year=
>     >
>     > see if 6890-A is the part you need.
>     >
>     > Ron Fraser
>     >
>     > -----Original Message-----
>     > From: Tigers <tigers-bounces at autox.team.net
>     <mailto:tigers-bounces at autox.team.net>> On Behalf Of Terry Lawell via
>     > Tigers
>     > Sent: Thursday, July 01, 2021 8:34 PM
>     > To: tigers at autox.team.net <mailto:tigers at autox.team.net>
>     > Subject: [Tigers] 90 degree oil filter adaptor
>     >
>     > I purchased a 90 degree oil filter adapter from Summit Racing
>     and when it
>     > arrived I realized it did not have the adapter for the block,
>     though the
>     > salesman told me it came with it. Does anyone know where I can
>     get the
>     > adapter? I think it is 1.16" threads to the block and 13/16"
>     threads to the
>     > adapter.
>     >
>     > Cheers, Terry
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