On the S2 Toyota powered Exiges, what is the thread size for the drain plug and the fill plug. I think they are both an M14-1.5… I want to install a transmission cooler and I need AN fitting adapters… Is that the thread size on the plugs?
TIA
I can’t tell you the thread size but if you get the JDS kit the adapter comes with it.
Who is JDS? A link would be nice too. Thanks…
I can’t remember the exact size, but M14 sounds too small. M16 or M18 sounds more like it. If you have a gearbox to hand, take out a plug and have a measure.
http://www.seriouslylotus.com/drivetrain/toyota-drivetrain/gear-box-oil-cooler-kit
That’s the complete kit, but think there is a supply issue with the pumps at the moment.
the problem with that link is that it is the whole kit… I’ve already got the “double” Laminova…I don’t need the single one Dave is offering in that kit. And take a look at those photos Dave has posted… the 2 fittings are quite small… defiantly not an M18…
You said a link would be nice. Link supplied.
You asked what size the threads are, I stated that they are either M16 or M18 x 1.5. Not sure how you can tell what size the threads on the fittings are that screw into the gearbox are from that picture, as it’s only showing the -6AN side of a male/male adaptor facing the camera lens.
Have you measured one of your drain/fill plugs yet?
I have not…I’m 7000 miles away from my car right now. If I could measure it, I would not be asking here.
You supply -6AN lines with your kit? In the States, that same pump comes with -8AN fittings… And the “standard” size fittings for the small Laminova Heat Exchanger is also -8AN…
Why would you supply a kit with -6AN lines?
In the States, I can get that same MoCal oil pump for $300 delivered to my doorstep… http://cdn.racerpartswholesale.com/downloads/17311.pdf Some -8 AN lines… and I’m done with my “kit”. The only thing missing, is the adapters…
From memory, I’m guessing M14-1.5… but I would like that verified. My memory is not that good any more…
And a mount for the pump. And some wiring to make it all work. And all the mounting hardware, jubilee clips, etc. But other than that, you’re good to go. Most people don’t want to go to 20 different places to get all the different parts, as it always turns out that you are missing 1 thing, and shop is shut on the weekend and you now have to put your car back to together to be able to drive to work, then do it again the following weekend.
The pumps come from Mocal UK, and they bring them in from Mocal USA, so no huge surprise that they are cheaper over there. If you hunt around enough, you can get them even cheaper. They come in 3 sizes.
In the UK the small Laminova comes with -6 fittings. We have tried it with all -6, all -8 and -8 from the box to the pump and -6 everywhere else. Its makes no measureable difference to temps - this is managed by the Laminova/cooling system capacity - and very little to flow rates. From memory the ID of the male/male adaptor is pretty much the same size as the ID of the -6 hose that we use, so that tends to be the limiting factor. -6 hoses also allow a smaller bend radius, as the engine bay is pretty tight on road cars with everything else in there. Oh, and Mocal UK recommended to use -6.
Why do you think that you would need anything but -6?
I’d use -8 for pump longevity… less load on the pump. Also, when it is cold, it will flow better/more. With the -8 lines, since there is no thermostat in the system, will bring the oil temperature up faster to operating temperature…
I have a hybrid on mine, -8 on the drain up to the filter and natively -8 pump. Then into -6 up to the oil cooler (mines air/oil as to not load the coolant system) and back to the fill on -6
I think my second pump came with a bigger output connector!! The ’ limiting factor’ is still the other -6 's. But as the system works beautifully as is it clearly already has adequate capacity. Mine’s thermostatically controlled. Temps never climb above water temps.
Great…but what is the thread size?
According to my trusty engineering data book, the hose ID for -6 is 3/8" (10mm) and for -8 is 1/2" (12.5mm). Now M14 has a max safe drilling ID of 7.5mm, M16 is 9mm and M18 is 11mm.
So the latter two metric sizes will give sod-all flow restriction when used with either -6 or -8.
If the drain & fill are M14 it will be those, not the subsequent hose (of whatever size) that will have the smallest orifice and, so, flow restriction.
Which all just backs up what JDS said 
on a honda it’s M14 drail and M20 fill
I have the first one of the JDS kits, I am sadly no help at all as it was designed and fitted by him on my car, however it does work very well. To get around the cold oil and strain on the pump, I have a switch in the boot to turn on when the car is hot before I go on track. I don’t use it on the road as it seems pointless to me.
Oils do have an optimal operating temperature…so, warming it up is a good thing…so not pointless at all.
I think I have my answer… M18-1.5
Excellent, John did a lot to design the cooling system for me after I broke my gearbox, I was pretty much the first in the UK to break a gearbox and I was hoping never to break another one, heat is such a major issue and on a hot day my car still struggle to get rid of it all.
I am considering replacing my laminova with air to air in the side pod and using the roof scoop for the air intake
my plan is to use the roof Mohawk scoop for engine air intake…
The correct answer is M18-1.5
Just test fitted the fitting…
It’ll still break 