more rotors ... good enough

 

You can couple 2 13B e-shafts yes, and you can do it so it has the same firing order as any other 4-rotor e-shaft. Reliability of the shaft will depend on how you couple the 2 13B e-shafts, but one thing is certain, it will always be much much less strong and reliable than a 'regular' 4-rotor e-shaft, and in the end the eccentric shaft is only a part of the entire puzzle. If your building a complete 4-rotor drivetrain you will need much much more than the e-shaft alone, which will cost a lot of money. So you will end up with an engine that has still cost you 10-20k which might hold up, but probably won't. Sure, if your able to fabricate everything yourself you can keep it below 10k in costs, but if that was the case you probably wouldn't have to ask if it's possible to make a 4-rotor e-shaft out of 13B parts.

 

Hi John,

I havent said much in a while, but now I am just wondering? what is happening with the 4RE progress?

 

Well not much at the moment, stuff just seems to get in the way and take up all my time. I've been abroad to chicago for a few weeks and before that the BMW crapped up again, it went like mad with the holset for a while but the electronic wastegate stopped working and the cylinder head cracked so it's leaking oil. Pretty tired of working on it so I need to part it out and sell it, or just put it aside for a while. Also got a nice RX-8, I needed to get it imported here in the netherlands and do some maintenance here and there but now it's all sorted. I like it! Much better than the FD for everyday use.

Don't really know when I'll really get to work on the 4-rotor again, I'm still planning to run it next spring/summer so I'll beter get cracking soon

 

We will keep your prommise on that one because we all like to see and hear the 4 rotor come to life.

 

 

OK, now you're just ******* with us.

 

that car would be awesome with the stock engine, and that engine would be awesome without the car, put em together though, and its awesome....

 

!!!!! What a tease!!!

 

Pulled the car out of storage and got the engine in there , Already made some mounts for the coils and igniters and made some spark plug wires. Lot's of work remains to be done but having the car in the workshop with the engine in there got me exited about the project again, so expect updates and more pictures soon

 

Almost there!

 

My new screensaver/wallpaper for my computer/phone. Awesome build man. Flat out awesome.

 

This car is a dream come true!! I've been waiting to see that engine in that car for a long time... Good work! I'm proud of you.

 

Sorry if you've talked about this previously in the thread but I don't feel like searching in 60 pages... Where are you planning your target RPM range with the intakes that long?

 

fits like stock :p

quite long runners indeed but should be no problem to trim them if the torque drops off to soon. but for street car it might be nice..

did you increase spring tension on the front? if not, the ride height and look of the car is really nice like it is

 

Awesome

 

Wow!
...
...
...
...
Yes, i was soooo waiting for that!

Grtz Dee.

PS Glad you like the 8 for daily cuz it is.

 

Nice but eumh John htf you going to change the v-belts???

 

Yes, they are very long but can be made shorter very easily later on. Intake length is about 560mm's right now, but I can shorten it all the way down to 320mm's if needed. I want to keep the rpm's below 8500 or so, but unlike the 787b which made the most power at it's maximum rpm I would like to make peak power well before the rpm limit, probably around 7500 or so. It's going to cost some hp, but should help keeping everything together. Oh, the 787b 4-rotor had a variable intake system, and at 6500rpm it's intake length is 560mm, just like mine is.


Coilovers with 8k springs in the front.


Indeed, the RX-8 is awesome, this probably isn't the best place to mention it, but as a street car I like it much more than the FD


No problem at all, removing 6 very easily accesible M6 bolts allows the large aluminium radiator duct to be removed, which gives you all the space you need. This car will be a lot easier to work on than the stock FC, (let alone the FD, that really is one horrible car to work on)

 

Looks great John!

Whats with the missing nuts on the strut towers?

 

Holy hell...that's awesome!

 

amazing! love it

 

I'm not on the forums much anymore, but I do come back to look at your thread whenever I get an e-mail that this thread is updated. Looking forward to seeing dyno videos and your car on the road!

 

great work,
i was excited, now its a bit more intense.
cant wait

 

Some pictures of what I've been up to:

First up, an oil filter pedestal adapter. This gives me something where I can mount an oil line, and it also holds the oil pressure and oil temperature sensors.




Here it's mounted on the engine, this also shows the coils in their position:




Because the bosch coils are dumb coils, and I don't want to run igniters in the ecu I had to get something else to drive the coils, so I got 2x 4-channel bosch igniters and mounted them underneath the air filter next to the coils.




Also rebuild the brake calipers, currently working on the master cylinders and brake booster:




So I'm working on it, but the list of jobs that need to be done is still pretty long. I'll see if I can get the megasquirt in there soon so I can start wiring stuff up. There was a czechian made ignitech ecu in there, but I took that one out and mounted it in my turbo converted BMW, works very well!, almost sorry I removed it from the RX-7.