Hi guys, simple question. What are the threads on the oil filter, and if its different between turbo and NA for some bizarre reason, for the NA filter stud. I need to know to build my custom oil cooler setup for the spin on adapter. Thanks!
Oil filter threads?
- Thread starter mkIIIman089
- Start date
IIRC turbo and NA use the same filter.
Stay away from Fram as they have teflon and silicone in them.
WIX (napa), Purolater, Toyota are good.
Stay away from Fram as they have teflon and silicone in them.
WIX (napa), Purolater, Toyota are good.
Thanks, but I need to know the thread so I can buy the proper spin on adapter, sorry if i was not clear enough.
Yeah, that'll work. As far as I know every Toyota made since the mid 70's uses 3/4-16 filter threads.
Now, why would Toyo' use a standard SAE thread on the oil fitting when all the other threads throughout the entire car is JIS standard metric :nono:
The thread is M18X1.5. So happens that 3/4-16 is relatively close, but the thread is Metric.
HTH
The thread is M18X1.5. So happens that 3/4-16 is relatively close, but the thread is Metric.
HTH
jetjock said:
Well what do ya know, learn something new everyday. I've never measured it but what you say make sense. The stickler is every filter reference you look up (including Denso's) and after market oil mount specs say it's 3/4-16. Go figure. As you said, the 18X1.5 metric fine thread is pretty close to 3/4-16 SAE. He'll probably have more trouble sourcing filters and accessories using that thread spec though. Btw, is BSP included in JIS? There are BSP threads on the car in several places.
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MDC,
My 7MGTE uses a different filter than when it was a 7MGE. The GTE has a 90 degree adapter on the block and uses a smaller filter. The GE used the standard size GM/Ford filter that went right on the block.
Its an early '87 NA with a JDM GTE rebuild.
Did I do something wrong when I built the GTE?
My 7MGTE uses a different filter than when it was a 7MGE. The GTE has a 90 degree adapter on the block and uses a smaller filter. The GE used the standard size GM/Ford filter that went right on the block.
Its an early '87 NA with a JDM GTE rebuild.
Did I do something wrong when I built the GTE?
You should be able to put a standard GM/Ford filter on the turbo one too... space providing.bluemax said:
Upon more research of the remote oil filter kits; the adapter that they all use for the 7M, NA or turbo, is 3/4-16. I'm assuming that it is actually VERY close, so much so that it doesn't make a difference really. And they all use 3/4-16 threads for the remotely mounted filter anyway, so even if I did get a M18X1.5 spin on it would make my filter choice no harder. Thanks for the added info after I thought I had it down pat guys!
It's 3/4-16 there are quite a few Imperial thread sizes used by Toyota.BlackDevilSupra said:
The Pressure sender and various plugs in the block are 1/8 th BSP I think this came about after WW2 as a lot of English designs were licence built in Japan which were then evolved into the motors we have today.
You should get a thread gage and measure the thread size on that fitting and then report back your discoveries. I assure you it isn't 3/4-16 
AMHIK.
AMHIK.IJ. said:
I have mutiple pitch gauges so will check it again later today.
We are talking the Filter thread and not the Block thread aren't we?
We are talking the Filter thread and not the Block thread aren't we?
While 18x1.5 is close in TPI the Thread form is different between the 2.
The Toyota Adaptor thread is 3/4-16.
od on the fitting is .749 where as 18mm = .708.
(measured by me 5 minutes ago)
The Toyota Adaptor thread is 3/4-16.
od on the fitting is .749 where as 18mm = .708.
(measured by me 5 minutes ago)
Well, it was a hassle but I had to know so I went and measured it too using my thread gauges.The pitch is 16 tpi. Further, using wire gauges to measure the major and minor diameters and checking in my copy of Machinery's Handbook, they correspond to 3/4-16.
Thanks JJ!
I usually don't post unless I'm sure of my info and as I've made remote filter adaptors in the past I was 99% certain this time but went out and checked just in case!
I usually don't post unless I'm sure of my info and as I've made remote filter adaptors in the past I was 99% certain this time but went out and checked just in case!
IJ. said:
I try to do the same as I dislike being wrong but it still happens. I was puzzled by his claim as I've been a half-assed machinist for years and an automotive tribology freak for even longer. Still, what he said made sense so I had to check. That said I've already learned you're the king when it comes to this thread stuff so it's nice to get a confirmation.
Mine measured in at 18X1.5mm so I guess something peculiar is going on here.
EDIT:
I stand corrected guys. I ventured to the garage to spec out my piston rings and took the oportunity to remeasure the NA fitting bung which confirmed what everyone else have concluded. The oil filter side of the bung seems to be a 3/4-16 thread whilst the block side is M19x1.5 which is also strange. I'll expect this dimension (block) to be more M20X1.5 rather than M19 which is an odd dimension. My JDM remote oil block fit into the block thread and I could swore that the oil filter side was the same dimension.
EDIT:
I stand corrected guys. I ventured to the garage to spec out my piston rings and took the oportunity to remeasure the NA fitting bung which confirmed what everyone else have concluded. The oil filter side of the bung seems to be a 3/4-16 thread whilst the block side is M19x1.5 which is also strange. I'll expect this dimension (block) to be more M20X1.5 rather than M19 which is an odd dimension. My JDM remote oil block fit into the block thread and I could swore that the oil filter side was the same dimension.
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Hey, stuff happens. I'll look on the bright side....my car has a new filter. Lol wait...I suppose I just could've measured the new filter. Duh!
Yeah, 19x1.5 is bizzare. Not at all what I'd expect but I'll take you word on it since I'm not motivated enough to check.
Yeah, 19x1.5 is bizzare. Not at all what I'd expect but I'll take you word on it since I'm not motivated enough to check.