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13b project motor

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Old 01-01-04, 03:07 AM
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13b project motor

i have an '86 n/a. whil tuming around town i met a guy with a spare core motor. he said that he will sell it for 50 bones. so now i have an extra 13b sitting around. it is a cool conversational piece, but i want to make use of it. first how do i tell if it was a turbo or not(probably not one though) s4 or s5? and if it was yours what would you do? i want to get templates and port it, but is that hard for a guy that has never done anything like that? basically im looking for ideas and what to look for when im tinkering with it.
Old 01-01-04, 04:23 AM
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It's hard to distingush between an s4 and s5 simply by looking at the short block (assuming that's what you mean by core).

As for turbo or N/A, count the intake ports on the side of the block, N/A will have 6 intake ports, turbo will have 4.
Old 01-01-04, 08:32 AM
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turbo engine is a 4 port design and non turbo is a 6 port design. series 4 vs a series 5 non turbo. the series 5 has a threaded hole in top of trailing spark plug for the knock sensor the series 4 does not have that threaded hole.
Old 01-01-04, 11:49 AM
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s5 also has a 3 bolt metering pump whereas s4 is 2 bolt
Old 01-02-04, 01:09 AM
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so its an s4 n/a. thanks guys.
Old 01-07-04, 03:43 AM
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so what can i do to it, how much will it cost and who do i talk to?

its a dedicated scca pro solo car. by the way
Old 01-07-04, 06:23 AM
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Why would you want to tinker with it? You're just going to get frustrated, scrape your knuckles, and waste some money.

I'll send you $100, we can ship the engine to me, so basically when all is said and done, you will have done no work to make a profit of $50.

This would be a move a very smart businessman would make! PM me when you want to exchange shipping information.

Old 01-08-04, 12:55 AM
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lol i dont think so. i want to build it, but i might be able to get another one and if i do i will sell it to you.
Old 01-08-04, 03:40 PM
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I could use some help guys on how to remove all the emissions stuff off the 86 13B EFI motor while keeping the EFI intact.
Any help?
Old 01-09-04, 12:45 AM
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air pump and cats. i dont think that there is anything else to remove that really effects performance. if you take off the airpump you will need a block off plate.
Old 01-09-04, 04:33 PM
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I did a search for you, here are a few results.

https://www.rx7club.com/showthread.p...hreadid=163298

https://www.rx7club.com/showthread.p...hreadid=112251

https://www.rx7club.com/showthread.p...hreadid=145582
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