Don't ask why, just know that I'm doing it.

My question is, whenever you DO convert to Dizzy, what are you supposed to do with the alternator bracket? The stock FC tensioner bracket rubs on the Dizzy pretty badly. So, should I get the 1st Gen's bracket or what?

 

^bump^

Noone who's done a carbed FC can answer this??

 

More than likely nobody that has read this thread has carbed an rx7, I mean whats the point really? Just drop the grand to get a standalone and run EFI.

-David Guy

 

he be trying to save money

 

european NA FC with dizzy does not interfere with alternator....

 

K'

Hell, why not sell the whole car and buy 3rd gen?

 

sorry Richie Rich, not everyone has a G sitting around.

 

What's the cost of getting a stock S5 turbo upgraded to a Stage II?

 

Do you have a bench grinder? I made mine fit using that. Was the only thing I could do. There might be a 12A bracket that would work but I have never checked on that but it might be worth checking out.

 

I have to ask...

WHY?!

 

Megasquirt ECU..

Needs to get spark from somewhere..

Liquid you can hack up a stock ECU to control your spark, and the MS unit will control everything else. The ECU becomes a dummy and still puts out spark signal..

PM renns. The man has setup two RX7s using this method.. Very informative and nice guy.

.. Or did you say that because you've already looked into the other method that I mentioned?

 

Black13B's on the nose. I have a standalone FUEL comp, and I didn't have to drop a grand to get it.

However, Black; all of the people I've talked to who are using the MS in conjunction w/ a stock ECU are driving S4's. My S5 ECU without a lot of the things I want to get rid of on it, will go into limp mode. I'm pretty sure it cuts the ignition after a certain RPM.

Plus... I'm all about simplicity. The fewer wires, the better... but carb's are crap compared to a tuned EFI setup.

And for everyone else... a pic I just picked up from the fastest TII thread. I believe someone said it was a ompany-owned FC, tuned by Crispeed...



...what an idiot... running a dizzy... psh :roll:

 

Dude don't worry about it, in P.R. they all run EFI fuel and a dizzy setup

 

Well considering the length of which things will be changed by just that fuel computer, can't you swap to an S4 modified ECU to control your spark? Is it that different between model years? This is where the 2nd gen forum guru's could help..

How different are the ECUs between S4 and S5? I'm sure theres a way to substitute your S5 ECU for an S4 considering there will only be a few required inputs for the ECU, everything else will be running up to your MS unit.

There must be a way to make it work.. Are you still using that stock electronic MOP or are you premixing or..?

 

Man, I hate it when stereotypes are right, FC owners are just cheap bastards. A thousand dollars is not very much in the scheme of car modification. You drop at least $400 on tires, which are consumable, and you're saying a one shot $1000 investment (Even less now from what I've been seeing.) that will give you a fuckton more flexibility than a carb, and will drive better is expensive? Give me a break.

-David Guy

 

Dizzies are crap compared to a tuned EFI setup too.

 

Man, I hate it when stereotypes are right, FC owners are just too bullheaded to research options.

http://www.bgsoflex.com/megasquirtspecs.html

"The system as it exists today is a complete turn-key solution: solder it together, install in the vehicle or boat, tune, and use. The complete source code is available on this site for those who want to understand or even modify the control algorithms - one can convert this board to control nitrous, alcohol, methanol, LPG, etc. - there is really no limit. "

 

Please, tell us about your setup!

 

Personally I wouldn't consider a fuel-only controller as an option. Ignition timing is just as important as fuel injection, so you're taking one big step forward and one big step back.

 

Actually, I first looked into the Megasquirt, and dismissed it as a solution for my car as I wanted complete control over spark as well. I know what you're probably going to throw back at me, and that is, "What about the MegaJolt?". Well, I did not forsee it being built by the time I wanted a standalone setup, and I was right. So before we start any more name calling, realize that I researched my options, and came up with what I feel is best suited for my needs, the LT8

-David Guy

 

I'm running an 88 TII with an atkins rebuild, stock ports, stock turbo. Non stock items include an LT8, 760s and 850s respectively, RB turbo back exhaust, TID, the GReddy VSPEC intercooler (new style), Turbonetics Godzilla BOV (Nice and quiet, and will outflow anything I could possibly ever throw at it.), and a GReddy boost gauge. I know I should replace the fuel pump ASAP, but the rewire is holding its own for the time being, and I keep a very close eye on my AFRs with our LM1. As far as times go my best so far has been a 13.639 @ 103.38 with a very dismal 2.111 60'. I'd like to see if I can make it into 12.99x (With slicks this time, and some worthwhile suspension) on the stock turbo, but I doubt it. On the other hand I've seen some amazing ET increases by adding slicks.

-David Guy

 

I guess to clearify I'll give a little more detail as to what I'm putting together.

1989 GTU, Streetported N/A 13BT using the S5 13B rotating assembly, using a ported 13BT intake manifold until a tubular manifold can be afforded. 3.5" CAI, tuned RB header with a 2½" exhaust. MS for fuel with 460 primaries and 550 secondairy. For the ignition (most likely until MegaJolt comes out) I'll be running a 12A Dizzy with a direct fire setup (DLIDFIS?).

The car has a full interior, (this will be driven often) but it's lost some weight; no P/S, A/C, Emissions, Bumper Reinforcments (I'm re-thinking this one... it IS being driven often), towhooks, etc.

My only goals for the car arn't anything grand, I just hope it doesn't explode, and can hold it's own in a variety of agressive driving.

Just wanted to try a few new things.

 

Your setup sounds pretty cool, however it doesn't seem very logical, in my opinion of course. rather than save and have an intake fabbed up etc (Which would probably net you fairly marginal gains comparitively), why not go with a nice efi and controled spark system in the first place. Yes, the megajolt could be nice when it comes out, and the megasquirt is very functional but as most people have noted in the past, a standalone is only as good as its tuner. Why not drop the extra cash and get somthing now that will be flexible to whatever needs you may throw at it, and be able to precisely (spellings off on that I know, but it's late.) control timing advance and retardation as needed. No hate on your future setup, but it's certainley not the route I''d go.

-David Guy

 

Direct fire ignition is when the coil is connected straight to the plug, with no dizzy (i.e. stock).

 

I'm well aware of what Direct-Fire is.

https://www.rx7club.com/showthread.p...hlight=DLIDFIS

And funny how you say it's stock... I've been thinking about actually using the stock leading coil for my setup.