Jim S.
SILVER Star
My stock '83 with the 2f is pleasant on the road, but my '78 with the 2FE is the one I really enjoy. Either way you choose to go you're going to have fun!
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
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.
View attachment 2786383
View attachment 2786385
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.
I am in the process of de-smogging my 3F-E now. Here is the EGR blocking plate I made today out of 3/16" stainless. But I still need to lapp one side flat.View attachment 2795932View attachment 2795934
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.
Do you think I would need to use a freeze plug and use the cover plate?That looks good. There's also a freeze plug (Dorman?) that will perfectly fit the EGR opening in the intake 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.
View attachment 2796215
However the 3/4 BSPT thread is essentially the same as 3/4 NPT pipe threads for this size.
View attachment 2796216
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!
Do you think I would need to use a freeze plug and use the cover plate?
You are likely correct. Mine has been there for 10 years, hasn't leaked or fallen out yet. My egr block off is just a triangular piece of aluminum, like that pictured above, without the tail. I think I cut a paper gasket to seal it off.
View attachment 2796231
You are always welcome to post on my threads and I have learned a lot from you and others.Are you running a CAT, assume desmogged not? Where is the exhaust run, inside or outside the frame? Have you been running with bellhousing motor mounts with an H55F for ten years?
Questions about 2FE verses 3FE. Gain in torque and HP with 2F block over the 3F block? What accessories (A/C compressor, PS pump and alternators) do you run with each? Is it easier running the 3FE accessories with a FJ62 wiring harness? 3F block uses the same front motor mounts as the 2F?
Alex if you want will gladly delete my post. Just think these are good questions related to the conversion.