Could you tell that there was a performance boost after de-smoging or was it mainly to simplify the engine compartment?Having both 3FE and EFI 2Fs
The 3FE is a great motor once you fully Desmog it and simplify. Toyota reliability. Way more complicated than a 2F with a Sniper bit it’s Toyota.
If you keep the 3FE fully remove all that spaghetti under the intake and it’s much easier to work with.
Before and after on cleaning up that smog mess.
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It absolutely helps power and there is no reason to install 20 miles of vacuum tubes that just get capped off on one or both ends.
26mm x 1.5 threads certainly measures close to the threads on the adapter that I pulled from the exhaust manifold but it is a tapered thread an not a straight thread like oil drain plugs are.Oil drain plug with 26mm x 1.5 threads will plug the EGR port in the exhaust manifold.
26mm x 1.5 threads certainly measures close to the threads on the adapter that I pulled from the exhaust manifold but it is a tapered thread an not a straight thread like oil drain plugs are.
I expect that the threads are a metric pipe thread on a Toyota which are designated as an RsPT thread. However the RsPT thread is the same as the British Standard Pipe Tap (BSPT) dimensionaly. The closest BSPT to what I measured on my fitting is 3/4 BSP.
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However the 3/4 BSPT thread is essentially the same as 3/4 NPT pipe threads for this size.
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As you can see, the thread pitch is the same but the OD is .019" larger for the NPT threads.
Since the threads are tapered, I am taking a chance that a 3/4" NPT plug will fit since it is more common and less expensive.
But if is too tight a fit, I will buy a 3/4" BSPT plug.
Thanks for your input Engineer8000!