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Aaron Cake
Administrator
Canada
6718 Posts |
 Posted - Sep 26 2010 : 10:26:56 AM
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| What do you need to know? It is a 1.2 litre engine, which made about 120HP and 100 FT-LBs of torque. The primary restriction in the engine are the tiny exhaust and intake ports. Port the engine and on a good tune you can get 180HP out of it (roughly). Compression is 9.4:1. |
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Yerboogieman
Nobel Prize Winner
USA
577 Posts |
Posted - Sep 26 2010 : 1:37:34 PM
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| *Cough* 1.1L technically. |
If you don't have the time to do it right, when will you have the time to do it over? |
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urquiola
Apprentice
Spain
97 Posts |
Posted - Sep 26 2010 : 2:27:38 PM
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| How good is it regarding low r.p.m. performance and overall fuel consumption ? How complex is the exhaust emissions control system?. At how many r.p.m. is the maximum torque given ? Thanks in advance, salud + |
Edited by - urquiola on Sep 26 2010 2:28:11 PM |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Sep 28 2010 : 11:28:15 AM
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Yes, it is actually 1.1 litre...
The early 12As had a complicated and heavy thermal reactor exhaust system to control emissions. It worked very well, but was replaced with more standard catalytic converters in '82. This probably won't be a concern to you as I don't see why you would put the stock exhaust on. A header will free up 20+ HP.
Low RPM performance is fine. I think you'll find maximum torque at around 6000 RPM. |
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urquiola
Apprentice
Spain
97 Posts |
Posted - Oct 02 2010 : 11:04:31 AM
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| The Wankel General Motors considered producing is more known as a Curtiss-Wright engine, probably many C-W SAE papers on RCE deal with this engine, look at SAE and enjoy it!. Salut + |
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urquiola
Apprentice
Spain
97 Posts |
Posted - Oct 20 2010 : 12:49:46 PM
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| I've bought here a 13B Injection , four spark plugs engine from an RX7, but as I don't know the exact year, there are doubts on the kind of electronic injection and ignition control box that fits. Somebody giving me advise ? Thanks, salud + |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Oct 23 2010 : 10:36:59 AM
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Is the engine turbo or NA?
If NA, does the intake manifold say "RE-EGI" on it? Or "13B Injection....Mazda"?
If turbo, single or twin turbo?
Actually, it would be quite easy to identify if you post a picture.  |
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urquiola
Apprentice
Spain
97 Posts |
Posted - Oct 25 2010 : 06:20:48 AM
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It says 13B INJECTION
MAZDA
I'll try to attach a picture, the seller indicates is years 86-92.
Thank you, salut + |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Oct 30 2010 : 11:08:30 AM
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86-92 came in both NA and turbo form, so you have two basic and obvious choices.
If the engine is 86-88, then you need a matching harness, ECU, air flow meter, solenoid resistor (if applicable), variable resistor from that range of years (called "S4").
If it is S5 (89-92) then you need the same stuff minus the variable resistor (not used).
If it has a distributer, then there are a few more choices. Some models for export didn't get coil packs but instead got a dizzy and thermal reactor exhaust. |
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urquiola
Apprentice
Spain
97 Posts |
Posted - Nov 01 2010 : 06:51:30 AM
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| Thanks a lot. It's NA and has a thermal reactor exhaust. I've already bought an ECU, delivery pending. What is a dizzy ?. Salut + |
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urquiola
Apprentice
Spain
97 Posts |
Posted - Nov 06 2010 : 09:47:12 AM
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| My engine has the number 18100. Do you know the reference for the electronic control box that fits ?. Does it accept Chrysler torqueflite automatic transmission ? Should I buy a Mazda automatic gearbox ? Thanks a lot, salud + |
Edited by - urquiola on Nov 09 2010 12:27:25 PM |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Nov 07 2010 : 10:26:13 AM
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I don't have any reference for the engine numbers, and I don't think they are very meaningful outside of Mazda.
Dizzy = slang for "distributor".
If you don't have to pass emissions testing, toss the thermal reactor in the garbage and get a nice header on there. Good for about 20 HP. The thermal reactor, while quite cool and unique, reall cuts down power. Exhaust flow is one of the most important things to consider when making power with the rotary.
It's doubtful that it will bolt up to a Chrysler transmission.
Why not go manual? The 5 speed from any other Mazda rotary will bolt up...for the most part. You just need to match the flywheel/starter/clutch to the transmission used. |
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urquiola
Apprentice
Spain
97 Posts |
Posted - Jan 08 2011 : 5:07:41 PM
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| Happy year 2011 for all !. I've realized that the Pacer 6L engine has the exhaust manifold located at the driver's side, while the Mazda thermal reactor is at the passenger's side. Any tip ? Salut + |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Jan 09 2011 : 10:12:53 AM
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| I would suggest getting rid of the thermal reactor and going with a standard header, unless you have to retain it for emissions purposes. You'll save a lot of space, and then it will be easy to make the exhaust cross over underneath the transmission or driveshaft to the stock exhaust tunnel on the opposite side. Make sure to include at least two quality resonators and a good stainless muffler to keep the noise down. |
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urquiola
Apprentice
Spain
97 Posts |
Posted - Nov 04 2011 : 6:03:33 PM
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| I now own an automatic gearbox for a Mazda Rx 7 engine, and keep on looking for a decent engine in the shops. As the AMC Pacer never had an engine giving more than 150 HP, any non turbo engine of the last generation will be good, fuel economy being an important point, my current 258 engine uses between 9 and 18 lit / 100 km. The seller cancelled the sale of the core engine mentioned above. I won't make you waste your time in my personal case anymore. Thank you for your patience and cooperation, Merry Xmas and Happy year 2012 ( I don't believe the world will end next year ) |
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Mounting a rotary engine in an AMC Pacer
