The 89 is an s5 and the 87 is an s4 It will fit but might take minor modification.
Anything will work as long as you have enough money. There have been LS7 swaps into newer RX7's but i'm not sure about an 87.
It depends on how many lugs there are. If they areboth 5 lug than it will fit. If the 87 is 4 lug then you would have to change the hubs to 5 lug.
To run, no. To pass emissions, yes.
I have an 87 7mge non turbo and i beat my buddies 89 rx7 with a 13b and webber side drafts
1,8,4,3,6,5,7,2
you could have a bad ground wire that was my problem
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Need to know which engine you have.
Sounds like a dud fuel pump to me. Check all the wires first . Funny though , 87 rx7 had no carburetor...it has electronic fuel injection.
The firing order of my '87 Pontiac Sunbird is 1 3 4 2.
The firing order is 1-5-3-6-2-4.