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-   -   13 B Identification (https://www.rx7club.com/general-rotary-tech-support-11/13-b-identification-198330/)

f/p79 06-20-03 11:15 PM

13 B Identification
 
Help! I need to know how to identify one 13B from another.
After swapping in a 13 B into my 79 doner, I have a bad oil leak from around the pan. I ordered the new pan gasket and since I was there anyway, an oil pan baffle. I was told by the seller the engine was an 86 13B. I ordered the parts for that motor; neither fit. I'm assuming an 86 may be different from an 84 etc. I have an autocross on the 29th and I can put it back together with the old gasket, but I still need to know. Any help is much appreciated.

Cosmo Donk 06-23-03 04:04 PM

I believe the 89-91 has the knock sensor above the T1 whereas the 86-88 is NOT there:) Dunno where.

Hope this helps because that is all I can think of:(

f/p79 06-23-03 11:15 PM

My bad. I needed to ask about differentiating between 84, 85 and later models. The older block/case is about
1-1 1/2 longer. Now I have a gasket and baffle for the 86. Anyone want to buy them?

Project84 06-24-03 12:20 AM


Originally posted by f/p79
The older block/case is about
1-1 1/2 longer.

The older 12A is shorter than the 13B.

f/p79 06-25-03 12:02 AM

Ah but apparently from my view from under the car, the older 84-85 13B is longer than the 86 and up.

Project84 06-25-03 12:10 AM

the 84-85 13b may be longer cause it has a different front cover. The engine mounts are on the front cover I believe, and on the 86+ the mounts are on the front end plate.

I thought you were saying the 12A was longer than the 13B

Cosmo Donk 06-25-03 04:18 PM

I think you mean the center plate? Also the 2nd gen has the pass mount through the oil pan.


Originally posted by Project84
and on the 86+ the mounts are on the front end plate.

diabolical1 06-26-03 11:03 PM

there are several differences between the old 13Bs and the newer 13Bs ...

the ones that matters with respect to the oil pan are these:

1 - the older engines have a different shaped front cover (as Project84 stated)
2 - the newer ones are distinguished also by the little flap on the left side where it makes a provision for the engine mount


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