badinfluence

I am looking at doing the modified Renesis engine build when I take my engine down for a rebuild. I can't seem to find it this morning, but it is the Renesis + 13B Hybrid with both exhaust ports (perp & MSP) with that sexy stainless steel welded mani.

I expect this to be a several year build judging by my rate of bullshit spillage in my life. I did have some quick questions that I think will be easy to answer.


For the Irons (Rotor Chambers), if the FD improved over the FC? I have a 13B FC NA S5 or S4 engine that needs a rebuild, but it was free! So far as I can tell someone didn't change the number 1 rotor plugs and it "seized" Well I un-seized it and if they didn't cut off all the harness it would run right now. Getting an FD Engine would be an added expense, so could I sneek by with the FC engine's parts for the hybrid. (Obviously I will need the guts from a Renesis too.....) I would rather save that extra bit of money for getting it done right, but if I am cutting a corner that shouldn't be cut ill find a FD3S that found the back of a pole somehow.

That is actually all I have for now, but I am sure I have more questions later.

Black2010R3

iTrader: (1)

The FC NA rotor housings (irons go on the sides of the rotors) have a piece of bent metal in the exhaust port (I forget what they're called) that is said to be a source of restriction. It can be cut/ground out, but IIRC the sleeves can also be replaced, or what most do is when rebuilding, they get turbo housings. To see if there's any difference in the port size and shape, check the FSM's for the timing, these can be found online. As far as strength differences, spark plug position changes, etc, I don't know.

BigBadChris

iTrader: (4)

The hybrid has been done, and it didn't work. Mazdatrix stopped showing it, and stopped talking about it. If you think you know more than mazdatrix....go right ahead.

http://www.motoiq.com/MagazineArticl...SP-Hybrid.aspx

badinfluence

That is the article I was referencing. I don't claim to know more, I just had assumed it was a bitch to keep working on the car, documenting everything, and fabricating everything all at the same time. Documenting work can take a long time and if no one appreciates it, it would be the first thing to give up on.

I thought it was up and running, is it not? I totally give them props for it, and would love to try it out. It is also why I said it would be a few years out since it may take me that long to fabricate parts and collect everything. It also gives them or someone else more time to work it out.

ASH8

WHY, do you think only changing irons to FC or FD's is a great idea, you are going backwards.

Straight off what are you going to do about INTAKE?, you will lose about 40 HP by this backwards set up, let alone getting it to run properly, and I don't have to read Mazdatrix fail.

But go right ahead.....you have been warned.

yomomspimp06

it's my understanding that it wasn't exactly a fail...motor did well but the car was crashed

badinfluence

OK lets take a step back a bit. Lets start with what you mean by "irons." I am referring only to the rotor housing, not the sandwich plates with the MSP ports. I am keeping the MSP setup, but adding the pref exhaust ports from the FC/FD, or the 8 if it isn't to much of a bear, but as I understand it, coolant runs through where the port would have to be.

My understanding of this is because the MSP is a great idea, but it is a trade off in some respects.

-13B-MSP (only MSP, has a bigger problem with clogging and carbon, but power output is near witchcraft levels)
-13B-RE/REW/NA (Pref ported exhaust have less of a carbon issue because of the port location and size, but are less efficient than the MSP in terms of power VE)
-13B-MSP Turbo S1 (Taking some of the problems out and adding a couple in with regards to life, but otherwise a decent marriage)
-13B-MSP Turbo S2 (Adding in some serious problems here with the 4 stroke oil injection going on, but a better PCM with about half the tuning it deserves, and some major improvements over the series 1 with Oil Injetion both the 13B-RE and -13B-MSP S1 combined, but with no oil adapter solution except to disable it in the PCM and go premix....)
-13B-RE/REW (Swap that really is pretty do-able, but takes time to fabricate just like the 13B-REWMSP)
13B-REWMSP (Swap attempted once that is pretty damn hard to do, but looks interesting and would be fun to shoot for. If it fails, other swaps and engine builds can be attempted with similar parts acquired)

For the intake, a port, but I am trying to understand how the original build worked before I decide what to do there. (Template, Bridge, Major port, or something custom)

For the coolant, something will definitely have to be done extra since it is Texas, and it gets stupid hot idling in bullshit traffic. I almost wonder if the answer is Fulltime Meth injection based on IAT/AAT + MAF. (Instead of just one of the other)