Bro keep up the good work. Your knowledge on the rotary engine is bye far some of the best tips and tricks I've heard. I was never to confidant on building a 13b or 12a bit with your knowledge and coman Sence I'm sure it will be mint. Cheers mate
Food for thought guys......if you are a Machinist or have a friend that is a machinist ..... Listen up! 1.....using a .100 wide 2 flute end mill 2......set your cutting depth to .060 3......generate a cnc program to duplicate the o-ring location EXACTLY like a 12a..... ONLY YOUR GOING TO USE 86 TO 92 13B HOUSINGS!!!!!! it works perfectly!!!!!!!! Pay attention to detail any you guys will have success 🍻
Well, I think I got myself a backup plan for my 79 12a rebuild.. If I understood correctly, getting some 13b gslse housings that are machined down to 12a width, and coolant grooves machined in. the only difference would be larger exhaust ports? Think this will make my rebuild possible again. Got tired of searching for usable 12a housings. And have to get it running soon due to it needing to pass inspection again.
Do you have a video about the 13B 4 port na motors from Japan? I’ve ran 3 of them in all my FBs back in the early 90s. Use to be an abundance of them here back then.
I have a question the 13 B motor up to I think it's like 92 you can find the carburetor switch kit but when it comes to like a 2004 13B you cannot find that kid are those Motors really that different
Pretty cool stuff, iam getting ready to help a buddy either go from 12a to 13b or we may just turbo charge his 12a i was wondering about the flange difference.
Hey! Sweet vid, sorry I’m a bit late. I have an rx8, and I was thinking about doing a 13b rew swap for turbo power. Would I be able to get irons that have just an intake port, and get the housing exhaust ported and have a semi p port for the intake? How many parts would be interchangeable? Can all 13bs handle a supposed 700 hp? I’m just looking for around 350-500 wheel in the end, and 13b rew engines are super expensive.
Have you ever worked on attatching an FC subframe into the FB? id imagine it would make things easier to install the 13, but I suppose also the rear diff of a GXL would also have to go in. Reset the driveshaft, It would make a heck of a race car. Still retaining 4 lug hubs. Ive only seen and read a couple cases of it being done online
Could you use MSP side housings with a 12a rotor housing? MSP rotor housings have the coolant ring design like in the 12a motor. I am looking at getting a 1st gen with a 12a. The 12a is might be tired, so when I have to rebuild it, I want to make it better flowing.
Hey thanks for the rotary content. Just got a first gen and working on the restoration. One question that I have is, are the radiator fan clutches interchangeable between the 12a and 13b? How about fb vs fc? I cant seem to find a fan clutch for a reasonable price anywhere thats fb 12a specific.
They are interchangeable but the best option is to remove the mechanical fan and add electric fans on a relay and electric thermostat switch. Turn the fans on at 200 degrees and off at 190 degrees.
Hey man I no you have dun a video on diffs but I'm wanting to no what crown and pinion would fit my 79 rx7 im from new Zealand hard to get rx parts here I'm wanting to change my for 3.9 to a 4.?? For better acceleration just seen if ya no any other mazda diff gears that would bolt in cheers
yep you can, however the FC/FD plates do not share the same intake manifold bolt pattern as a 12a. so if you use say FC Turbo 2 4 port plates with 12a housings, you will need a custom intake manifold. On the other hand if you use old school 13b irons with 12a housings, the 12a intake will work.
@@RADPotential The other question i had was that somebody told me, if I did not want to do a bridge port for an aggressive idle, I could simply do a drill port for the same effect. However I do not know what a drill port is, Is the correct
Yes on a S1 rx8 engine iirc. I would verify the oil pan works, on an S2 the oil filter is on th front. I cant confirm that. You will need the gslse water pump
@@RADPotential I have a 1983 gs... stock and I have a gsl 12a turbo. I do have a 1973 engine from rx3 wagon and a engine in pieces fr9m 1988 turbo II... just don't know what direction to go with stock car. Thank you.
You can mount any of the 13b rotary engines to your 12a trans. You will need an NA diameter flywheel and clutch that matches the rotors balance in the 13b
These are engines, not motors. The 12A is 1.2 liters not 1.1 liters. Now because of the way the ratio of torque angle compared to the degrees of eccentric shaft rotation you should double the displacement. The 13B is equilivent to a 2.6 liter reciprocating 4 stroke engine.
679 subscribers!? This is one of the most underrated rotary channels 👌 I love it
You mean 11,000😁
Man I’m just now getting into rotary engines and this channel is awesome love the content man
Thanks man!!
Great video! I just got a 1st gen with a 12a engine so this is really helpful and very appreciated.
Bro keep up the good work. Your knowledge on the rotary engine is bye far some of the best tips and tricks I've heard. I was never to confidant on building a 13b or 12a bit with your knowledge and coman Sence I'm sure it will be mint. Cheers mate
Food for thought guys......if you are a Machinist or have a friend that is a machinist ..... Listen up!
1.....using a .100 wide 2 flute end mill
2......set your cutting depth to .060
3......generate a cnc program to duplicate the o-ring location EXACTLY like a 12a.....
ONLY YOUR GOING TO USE 86 TO 92 13B HOUSINGS!!!!!!
it works perfectly!!!!!!!!
Pay attention to detail any you guys will have success 🍻
Have been wanting to do this for awhile. Old school or no school haha
I just got a first gen 13b carb swapped. Thinking of going turbo 2 engine, tranny and a stand alone ecu. I need to go through elevation changes.
Gotta love the metric/imperial combo!
well done, if you happen to have it up in your brain a video of adjusting 1st gen steering boxes would be pretty helpful to a lot of 1st gen guys
You got it!!! Would be a perfect time to do it on the racecar!
@@RADPotential definetly with no motor in the way. looking forward to it
Well, I think I got myself a backup plan for my 79 12a rebuild.. If I understood correctly, getting some 13b gslse housings that are machined down to 12a width, and coolant grooves machined in. the only difference would be larger exhaust ports?
Think this will make my rebuild possible again. Got tired of searching for usable 12a housings. And have to get it running soon due to it needing to pass inspection again.
Do you have a video about the 13B 4 port na motors from Japan? I’ve ran 3 of them in all my FBs back in the early 90s. Use to be an abundance of them here back then.
i bought some S5 NA rotors and the guy gave me an e-shaft with them. didn't realize that the e-shaft was from a 12a until i got home lol
Also another little bit of info on the 12a is that the earlier ones had heavier rotors as opposed to the later s3 so can’t mix up those rotors either
I had always wondered. Need to get a scale for the house.
Awesome video , can you also explain the spark plugs please? Thank you
The variation in plug spacing between the models?
@@RADPotential yes , what's the difference between the #2329 ngk and the #3559 #5483 ngk
I have a question the 13 B motor up to I think it's like 92 you can find the carburetor switch kit but when it comes to like a 2004 13B you cannot find that kid are those Motors really that different
My 12a has fc plates not sure if it’s got double water seals or one side filled but it’s a 10 year old build still runs
Quick question, can a 13b clutch fit on my 12a engine?
Pretty cool stuff, iam getting ready to help a buddy either go from 12a to 13b or we may just turbo charge his 12a i was wondering about the flange difference.
Nice. Thxs for taking the time to explain
Hey! Sweet vid, sorry I’m a bit late. I have an rx8, and I was thinking about doing a 13b rew swap for turbo power. Would I be able to get irons that have just an intake port, and get the housing exhaust ported and have a semi p port for the intake? How many parts would be interchangeable? Can all 13bs handle a supposed 700 hp? I’m just looking for around 350-500 wheel in the end, and 13b rew engines are super expensive.
How do i align the roter. Is there gear marks or timing marks??
So technically speaking could you use the 13B Renesis (RX8) rotor housings since it has the grooves cut out for the coolant seals?
Yes. But you would have to have the exhaust port machined out on the renesis. Those motors are side exit exhaust port.
Have you ever worked on attatching an FC subframe into the FB? id imagine it would make things easier to install the 13, but I suppose also the rear diff of a GXL would also have to go in. Reset the driveshaft, It would make a heck of a race car. Still retaining 4 lug hubs. Ive only seen and read a couple cases of it being done online
I can make a video overview of it being done in the coming weeks. A friend of mine has done the swap
@@RADPotential that would be RAD of you! not too much late visual info on it around
Could you use MSP side housings with a 12a rotor housing? MSP rotor housings have the coolant ring design like in the 12a motor. I am looking at getting a 1st gen with a 12a. The 12a is might be tired, so when I have to rebuild it, I want to make it better flowing.
I have seen MSP irons used with gslse 13b rotor housings which are just like the 12a. I havent seen it done, but that doesn't mean you can't do it.
@@RADPotential how similar are 12a and 13b gsl se motors? I have heard about the mazdatrix car. Also how much can you port out the 12a exhaust port?
Are Stationary gears interchangeable?
Hey thanks for the rotary content. Just got a first gen and working on the restoration. One question that I have is, are the radiator fan clutches interchangeable between the 12a and 13b? How about fb vs fc? I cant seem to find a fan clutch for a reasonable price anywhere thats fb 12a specific.
They are interchangeable but the best option is to remove the mechanical fan and add electric fans on a relay and electric thermostat switch. Turn the fans on at 200 degrees and off at 190 degrees.
Hey man I no you have dun a video on diffs but I'm wanting to no what crown and pinion would fit my 79 rx7 im from new Zealand hard to get rx parts here I'm wanting to change my for 3.9 to a 4.?? For better acceleration just seen if ya no any other mazda diff gears that would bolt in cheers
There are some options from a Kia sportage. If you want a 4.77. I think they have other ratios. Iirc it's a front differential set
@@RADPotential ya cant find one there like Hens teeth lol
So, if you can run 12a plates on a 13b it stands to reason you can run 13b plates on a 12a, or will a corner seal fall in a whole?
yep you can, however the FC/FD plates do not share the same intake manifold bolt pattern as a 12a. so if you use say FC Turbo 2 4 port plates with 12a housings, you will need a custom intake manifold. On the other hand if you use old school 13b irons with 12a housings, the 12a intake will work.
@@RADPotential Cheers, very helpful, just at the start of my engine build for my old school RX3 coup Ive restoed
@@RADPotential The other question i had was that somebody told me, if I did not want to do a bridge port for an aggressive idle, I could simply do a drill port for the same effect. However I do not know what a drill port is, Is the correct
Could I put my GSL-SE front cover onto a Renesis 13B to fit into an FB?
Yes on a S1 rx8 engine iirc. I would verify the oil pan works, on an S2 the oil filter is on th front. I cant confirm that. You will need the gslse water pump
fc engine doesn’t mount in a fb wandering if you elaborate on that plz thank you have an fb
ruclips.net/video/5rksZJAdnHs/видео.html
How would you run a renisis engine on a distributer
I wouldn't. I would use the stock trigger wheel and use a megasquirt or other ignition system with a carburator
Thank you foe the information. I have some questions. My name is Ramon. Thank you.
what do you got?
@@RADPotential I have a 1983 gs... stock and I have a gsl 12a turbo. I do have a 1973 engine from rx3 wagon and a engine in pieces fr9m 1988 turbo II... just don't know what direction to go with stock car. Thank you.
So I can mount a 85 or older 13b motor to my 12a transmission?
You can mount any of the 13b rotary engines to your 12a trans. You will need an NA diameter flywheel and clutch that matches the rotors balance in the 13b
I'm the guy who say's he fit 13b rotors
in a 12a engine.
Hey man, can 13b carb engine covert to injection ?
They make efi throttle bodies to convert to efi that will fit on most of the carb intake manifolds
What about a Mazda rx8 renessis motor
Some stuff swaps between them. But not a whole lot. I will make a video on it.
These are engines, not motors. The 12A is 1.2 liters not 1.1 liters. Now because of the way the ratio of torque angle compared to the degrees of eccentric shaft rotation you should double the displacement. The 13B is equilivent to a 2.6 liter reciprocating 4 stroke engine.
I used jb weld sealed for ever 🤒😆😆🥳🥳🥳🥳
I have a NO centre plate is that ok to use with my 12a irons and housings? Thanks