JDM 13b Swap
 

Hi all. I am new to RX8 and picked up an automatic 2005. Unfortunately, the guy that sold it to me did not tell me it was low on compression and a few days later the car became hard to start. Long story short I purchased a new JDM 13b engine and told the company that I had an automatic.

So I pulled my engine out while waiting for the JDM 13b to come in. It finally came in and noticed it was a manual 13B swap. While pulling the automatic transmission off of the bad motor I notice the rear section where the transmission bolts to is different along with starter and counter weight. I planned on finishing this swap by the weekend. My questions are:

1) Will this MT Engine still work?
2) Can I swap rear section from my blown auto to the JDM Manual?
3) Can I swap counter weights?
4) Any other parts that are different from auto to manual that I need to swap?

I purchased the JDM engine as a longblock replacement but wasn't expecting a manual 13b to arrive. Any help is greatly appreciated.

There is a sticky for this, you should search next time.

But since im in a good mood, and feel sorry for you, i have found all the answers you should need.

https://www.rx8club.com/specific-per...t-swap-151684/

Good luck, hope you have deep pockets and enough patience

I searched and found this thread however, I'm not looking to convert to MT. I just trying to get automatic working. The engine they sent me was MT and and trying to get it working with my AT. Thank you for your help though.

I've tried searching and cant
Find any information on whether or not JDM 13B MT will work with my AT setup.

13B doesn't mean much....Is it a 13B-MSP? 13B-RE? 13-REW?

Hopefully it's the 13B MSP which is an RX8 engine. You say it's a JDM Engine so it's possible it's a 4 port like your car was(JDM had a 4 Port/5 Speed Manual combo, in the US, Manual cars were only sold with the 6 port engine). If it is a 4 port it should work, if it's a 6 port you have a lot more work.

Sounds like you're already in over your head.

They probably sent you a 6port engine and you need a 4port.

I'm pretty sure if your 8 was an '06 it would have worked.
Have you tried contacting them?

I believe both engines are 6 port. As for which motor I don't know. The only visual difference is the rear section, counterweights, starter.

I will check tomorrow to see if both motors are 6 port for sure but they were identical side by side. Unfortunately, I can't contact them until Monday.

They are both 4 port

So just swap the parts and you should be good to go. They're exactly the same engine.

It appears that rear section is different along with counterweight and flange. Should this work swapping the rear section and if so, how does the counter weight come off?

Where are you located?
This is clearly something you shouldn't do on your own based on your replies. I'm not being rude, just trying to save your arse

Sorry to bring up an old thread. But it beats starting a new one. My 8s engine is shot and I can get a used JDM imported 4 port for less than $2k. Is this a simple swap from pulling the usdm renesis and installing the JDM renesis or is there more to it than that. Thanks for any input.

If your current engine is a 4 port , the swap should be straight forward .

A) Is your car currently a 4-port? If it's a 6-port you might as well ignore it

B) You can get a US spec used 4-port for well under $2k. $2k is where basic rebuilds start at, assuming you can re-use most components. I'd pay $2k for a rebuild before I'd pay $2k for a used engine.

C) I believe the engine core hardware is the same as US 4-ports (or anywhere else in the world), just don't use the JDM electronics.

Hello RIWWP,

mine is a 2004 4 port auto. I'm pretty sure its shot. I was driving home lost all power and stalled. Flashing cell and sounds like its running on 1 rotor. Won't hold an idle. Everywhere I've looked wants $3k+ for a rebuild and $2200+ for a used engine. The one I was suggested is compression tested and has a 30 day start up warranty. I'm trying to figure the most affordable option. I'll gladly take all the help and suggestions I can get

Used engines on the forums here typically go for $1,100-$1,500 from a known good car. Ones with unknown history are more like $700ish.

Give Rotary Resurrection a call / email to see what he can quote you. http://www.rotaryresurrection.com/

Who is this RIWWP double post noob ?

Thanks RIWWP!

Ill definitely give Kevin a shout. I will be on the hunt for what my best options are. I appreciate it. In your experience is it a bad idea to buy a good compression tested engine with under 50k miles?

I was wondering what the forum hiccup was and why it took longer to show up on iSpy... Al got it though.

Not a bad idea, I just think you could do better on price. If you are comfortable with the price and feel comfortable that it is a good option for you, go for it.

I was very comfortable with the price until you said I could find one here for $1100-$1500 Lol. I guess I'll just save and pull the trigger on the right one. I just hope I can get some miles out of it. My last engine was replaced with a reman supposedly and lasted 32000 and had a wobbling pulley almost the whole way. I want to avoid that again. Fwiw I ran nothing but 10-w40 Castro every 3k miles and premixed valvoline 2 cycle for the last 20,000 miles of its life. I don't think I had a rebuilt engine. I think they swapped a junkyard motor in. Who knows

I need help finding an engine for my RX8. Is there anyone here who can recommend a good source for RX8 Jdm engine ?

I have an automatic transmission one.

I don't want a junk yard one.

There are vendors who lie that the engine is from Japan but they buy one from a Junk yard and sell. I am expecting some help here.

I am currently leaning towards buying a low mileage engine from Engine World Inc in Houston. There website is Japanese Engines | Used Japanese Engines | Used Japanese Engine | JDM Engines

Why do you want a JDM engine? Where do you live? Why can't you keep everything in one post?