Rotary Engine / Parts Identification Guide

[Whizbang]

** pics will appear starting tomorrow **

I am building this guide as a one-stop shop for identifying rotary parts. It is broken down by category (i.e. housings, rotors, front covers, etc) then again by model. There will be an "other" sub-section for non-Mazda wankel information as well.

The order of infomation might also get jossled around as time goes on to make a logically progression.

If anyone can provide missing information that would be excellent! Credit will be given. I just ask that for pictures the original be sent to me and be similiar in format (if able) to the pictures used here.

Thanks to RETed for information!

Contents

1. Rotors
2. Front Plates 1 (http://rotarycarclub.com/rotary_forum/showpost.php?p=252831&postcount=5) 2 (http://rotarycarclub.com/rotary_forum/showpost.php?p=252831&postcount=6) 3 (http://rotarycarclub.com/rotary_forum/showpost.php?p=252831&postcount=7)
3. Intermediate Plates
4. End Plates
5. Housings
6. Front Covers
7. Eccentric Shafts
8. Counterweights
9. Flywheels
10. Seals (Apex, Side)
11. Oil Pans
12. Oil Pumps
13. Complete Engines

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Rotors

10A (1967 - 1971)

Details
Found in the early Cosmo, R100, some RX-3
9.2:1 or 9.4:1 compression ratio {conflicting reports}


12A (1971 - 1973)

Details
Found in twin-dizzy cars
Cast combustion chamber
9.2:1 compressionr ratio


12B (1974 - 1978)

Details
Found in (74-78) RX-2 and (74-78) RX-3, with single dizzy.
Cast combustion chamber


13B "AP" (1974 - 1980)

Details
Found in the Rotary Pickup, RX-3 SP, RX-4 and Cosmo (RX-5 outside U.S.)
Cast combustion chamber
9.2:1 compression ratio


12A (1978-1982)

Details
Cast combustion chamber
9.4:1 compression ratio


12A (1983 - 1985)

Details
Cast combustion chamber
9.4:1 compression ratio


12A Turbo (1982 - 1989)

Details
Cast combustion chamber
8.5:1 compression ratio


13B GSL-SE (1984-1985)

Details
Cast combustion chamber
9.4:1 compression ratio


13B 6PI - Series 4 (1986-1988)

Details
Found in FC3S non-turbo models
Cast combustion chamber
9.4:1 compression ratio
2mm Apex seal


13B Turbo - Series 4 (1986 - 1988)

Details
Found in FC3S turbo models
Cast combustion chamber
8.5:1 compression ratio
2mm Apex seal



13B 6PI - Series 5 (1989 - 1991)

Details
Found in FC3S non-turbo models
Machined combustion chamber
9.7:1 compression Ratio
2mm Apex seal



13B Turbo - Series 5 (1989 - 1991)

Details
Found in FC3S Turbo Models
Machined combustion chamber
9.0:1 compression Ratio
2mm Apex seal



13B-RE (1990 - 1995)

Details
Machined combustion chamber
9.0:1 compression ratio
2mm Apex seal


20B-REW (1990 - 1995)

Details
Machined combustion chamber
9.0:1 compression ratio
2mm Apex seal


13B-REW (1993 - 2002)

Details
Found in all FD3S models
Machined combustion chamber
9.0:1 compression ratio
2mm Apex seal


13B - MSP (2004 - 2012)

Details
Found in all RX-8 models
10.0:1 compression Ratio
1mm Apex seal

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Rotors (cont.)

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Rotors (cont.)

Non-Mazda Rotors

Snowmobile Engine (evanrude?)

Details
Machined combustion chamber



http://rotarycarclub.com/rotary_forum/attachment.php?attachmentid=13872&d=1377540110

http://rotarycarclub.com/rotary_forum/attachment.php?attachmentid=13873&d=1377540233



Lawnmower

Details
Really damn small
Side seals only on ONE side of the rotor. This side is the "bottom" as the rotor lays flat.


http://rotarycarclub.com/rotary_forum/attachment.php?attachmentid=13874&d=1377540383

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Front Plates

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Front Plates (cont.)

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Front Plates (cont.)

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Intermediate Plates

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Intermediate Plates (cont.)

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Intermediate Plates (cont.)

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End Plates

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End Plates (cont.)

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End Plates (cont.)

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Housings

Early 12A housings

There are actually differences between the front and rear housings.

The rear has "TCP" case into the top.


13B-PP Mazda Factory Racing Housings

Details
Available through Mazda Motorsport
"Mazda Motor Company Hiroshima Japan License NSU-Wankel" sticker on spark side / top
"13B Mazda" cast on edge
Unique, somewhat rough casting.
Dual Oil Injector ports


http://rotarycarclub.com/rotary_forum/attachment.php?attachmentid=13875&d=1377541068

http://rotarycarclub.com/rotary_forum/attachment.php?attachmentid=13876&d=1377541257

[Whizbang]

Housings (cont.)

13B 6PI - Series 4 (1986-1988)

Details
Found in FC3S non-turbo models
"Mazda Motor Company Hiroshima Japan License NSU-Wankel" cast on top
"13B Mazda" cast on edge
"Diffuser" in exhaust sleeve
Single Oil Injector port


http://rotarycarclub.com/rotary_forum/attachment.php?attachmentid=13754&d=1375822419
http://rotarycarclub.com/rotary_forum/attachment.php?attachmentid=13755&d=1375822498
http://rotarycarclub.com/rotary_forum/attachment.php?attachmentid=13756&d=1375822546
http://rotarycarclub.com/rotary_forum/attachment.php?attachmentid=13757&d=1375822589

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Housings (cont.)

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Front Covers

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Front Covers (cont.)

13B 6PI (1986-1991)

Details
Found in the non turbo variants of the Rx-7


http://rotarycarclub.com/rotary_forum/attachment.php?attachmentid=13882&d=1377543612
http://rotarycarclub.com/rotary_forum/attachment.php?attachmentid=13883&d=1377543704
http://rotarycarclub.com/rotary_forum/attachment.php?attachmentid=13884&d=1377543774

[Whizbang]

Front Covers (cont.)

20B-REW

Details
Found on the Eunos Cosmo
Oil drain is front located.


http://rotarycarclub.com/rotary_forum/attachment.php?attachmentid=13878&d=1377541982
http://rotarycarclub.com/rotary_forum/attachment.php?attachmentid=13879&d=1377542032
http://rotarycarclub.com/rotary_forum/attachment.php?attachmentid=13880&d=1377542091

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Eccentric Shaft

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Eccentric Shaft (cont.)

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Eccentric Shaft (cont.)

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Counterweights

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Counterweights (cont.)

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Counterweights (cont.)

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Flywheels

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Flywheels (cont.)

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Flywheels (cont.)

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placerholder 43

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Seals

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Seals (cont.)

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Seals (cont.)

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Oil Pans

10A (1967 - 1971)

Details
Found in the early Cosmo, R100, some RX-3
Small pan, about 14.75 inches in length.

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Oil Pans (cont.)

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Oil Pans (cont.)

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Oil Pumps

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Complete Engines


12AT

http://rotarycarclub.com/rotary_forum/attachment.php?attachmentid=13709&d=1375373483

http://rotarycarclub.com/rotary_forum/attachment.php?attachmentid=13710&d=1375373493

[Whizbang]

Complete Engines (cont.)

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Complete Engines (cont.)

[Whizbang]

Adding some oddities!

I a still looking for information! The format I would like to follow can be seen within. If you have something I don't have listed, please take a high quality photo graph and send it to me for uploading. Credit will be given!