I want to thank those that were able to help me in my last post about my over heating problems. I had recently put in a new radiator, clutch fan, water pump, and thermostat for my cooling problems though i feel i have reached the last problem. I had read online about the many common cases of overheating with rx7s such as over heating at high rpms, stops and low speeds, etc. Well at first i thought it was the stops and low speeds which it had proven, but nothing i have done has worked. I was given advice to get a new engine for it because my "O-Rings" might be bad. I was curious about getting a new engine for it if that would be the best thing to do. What would be a good place to get one at a good price? Would it be a good idea to get a latter year engine for my 1987 rx7 or should i just get the same one? i want to keep it n/a. Also i have an external fuel injector in the form of a choke switch under my steering wheel, is this common or is there anything i should do for it?

sorry for so many questions but i had just recently bought this rx7 for $1500 and i want to get it back to the condition it deserves to be in.

 

http://www.rotaryresurrection.com/2n...l_failure.html

When you have finished your process of elimination with the other cooling system components (do not forget the plastic ducting below and in front of the radiator that forces air through and not around the cores) you can pretty much guarantee you have a coolant seal issue. You can also fool around with the above tests for verification.

I have never heard of an "external fuel injector in the form of a choke switch". I would very much like to see pics of such a rig. Here is the "normal" band aid method for preventing/dealing with engine flooding, which I can only guess is the original aim of this rig.

http://www.rotaryresurrection.com/2n...nflooding.html

 

well....i just found out that there is alot of exhaust in my cooling system...
this sucks....

I will try and take a few pictures of the switch soon. Its weird because when I go to start it up i have to turn the key and flip the switch, after the car starts I have to turn off the switch. Weird huh? The only reason I was givin as to why it was in there was that there were flooding problems with the fuel so they put in an external fuel injector. Its kinda of annoying to have to flip it every time i want to start it up.

 

I will be taking an S5 engine out of my vert soon, swapping a v8 into it. I live in North Carolina, if you are interested then PM me.

 

Sounds like you have a standard fuel pump cutoff switch installed, which is exactly what I have described in the writeup I linked above. It is a normal way of dealing with a flooding engine. Flooding is sometimes caused by injector issues and can sometimes be helped with a $100-200 injector cleaning service. More often flooding is a result of a weak compression engine that will get weaker as time goes on. So in this common case, you have 2 options. Rebuild the engine...2 grand, give or take, or wire in a fuel cut switch...10 bucks give or take. Most people would take the 10 buck fix and run, and not bitch about flipping the switch.

 

If you have a 2nd car do it yourself if possible.