I am finally getting back to this project. Unfortunately the 20B is not going back into the car. But on the positive side I am taking on a new engine configuration that should Be a lot of fun as well as a great learning experience.
I will be replacing the 20b with a Carbureted S4 6 port 13b. The engine will be a semi-bridge port with the primary throttle blades of the carburetor feeding street ported primary ports. The Carburetor secondaries will feed the bridge-ported secondaries and Aux ports.
The ignition will consist of a distributor with an MSD box and FC coils.
I am hoping for about 200 whp and am considering up to a 100 shot of nitrous.
Thanks to Dondo, I have a donor engine to work with. The engine had no compression on any face. What Marcus and I found is that all the seals were stuck everywhere. The rotors have been sitting in gasoline for a couple weeks now and will hopefully let go of the side seals soon!
Additionally the front rotor housing had major wear down the center and the front iron was blown out between the exhaust chamber and the coolant passages.
I will be making my own exhaust header that extends to about the rear axel before merging. Similar to what is described here. You are not allowed to view links.
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LoginAs this project continues I am going to try to list all the technical resources I use and find most relevant. It seems there is a lot of hearsay when it comes to building a solid NA engine and I would like to help sort through some of that.
This build will be focused around a roughly $500 budget which should make it interesting. I want to keep it cheap well because I don't want to spend a lot of money as is common with a lot of RX7 guys especially ones working on NA engines.
As for the 20B I have big plans for that down the road...