rx7man13b

This is the emails back and forth
. First he tells me how did you use a TPS on a carb setup(that I didnt do) then he says use a TPS on a carb setup.
Read from the bottom up

First, we do not sell an "FC1000 Ignition Box" and I have no idea
what this component is or what it does!

Regardless, when installing our Holley Kit on a 1986-92 RX-7 Non Turbo
engine, one can retain the factory crank angle sensor and the factory
engine management system by incorporating the factory throttle position
sensor utilizing a bracket the installer fabricates, thereby allowing
ignition timing to advance and the engone to operate correctly.

Or, you can indeed use the 1981-9185 RX-7 electronic distributor.

-----Original Message-----
From: Ben C [mailto:
Sent: Friday, August 25, 2006 2:24 PM
To: Jim Tanner
Subject: RE: Ignition options


I didnt use the Throttle position sensor on the carb
setup. You didnt understand my question. By not
having a signal from various sensors Mass air flow,
TPS, etc.. the stock ECU doesnt advance timing under
load. That is the problem I have and was inquiring
about. The only sensor I have hooked up is the Crank
Anglke Sensor. Its hooked to a FC1000 ignition box I
bought from you guys. I was asking if there was a
system that you sell that works with the ECU and the
Crank Anglke Sensor so I dont have to switch to a
distributor

--- Jim Tanner <jtanner@racingbeat.com> wrote:

> I'm stumped by your queries!
>
> How did you accomodate the throttle position sensor,
> required for the
> factory engine management system, when you installed
> the carburetor.
>
> CAS--crank angle sensor???
> FC1000--????????
> please do not abbreviate!
>
> -----Original Message-----
> From: Ben C [mailto:
> Sent: Thursday, August 24, 2006 9:15 AM
> To: jlanger@racingbeat.com
> Subject: Ignition options
>
>
> Hi,
> I have a racing beat UIM with a Mikuni 44 sidedraght
> on a stock port S5 block in a S4 car (88SE). Ive
> been
> running it for about 2 years using the CAS and
> FC1000
> for spark. I was told Im missing out on a lot of
> performance and gas milage because the ECU is not
> advancing timing under load because the TPS and MAF
> are not used with the carb. Is there anything I can
> by
> to fix this and still use the cas. If not, is it
> worth it to go with a distubor and cap. It runs
> fine
> and has power but it does drink alot of gas. What
> would be the advantages of a dizzy over the way I
> have

rx7man13b

Anyways would I be wasting my time putting a tps on a carb setup. Just doesnt sound right to me

ussprinceton2004

the same thing happened to me when I asked about aftermarket exhaust manifolds :smiley_12

classicauto

iTrader: (3)

so what? there was a mis-understanding and then he told you to fab a bracket up on the carb so the TPS is pushed accordingly and the ECU gets its proper signal. Isn't that the answer you were looking for?

edit: as far as the FC1000 is concerned....I don't see it listed on their website. But similarly I have an old school RB in cabin boost controller...the guy I spoke with didn't even know they made one, but what can I say - they don't make it anymore or sell it so why should he know all the ins and outs of a product they don't make or carry anymore?

rx7man13b

He told me to fab a TPS bracket on after he first said " How did you accomodate the throttle position sensor, required for the factory engine management system, when you installed
the carburetor!" like if I had done that I was an idiot. Then he tells me to do it.

Anyway will doing this advance my timing under load because searching this website it said the Mass Air Flow signal is what does it and if thats the case Im going with a dizzy. BTW I bought the FC1000 from RX7.com

tinvestor

If you are like me you cant always remember correctly where you bought your parts from. I never knew of them to sell the FC1000 but maybe they did years ago.

Yes you should build a small bracet to hold the TPS so your computer can use that info.

EDIT: LOL I tried to get mine from RX7.com also but he was out so I ordered it from JC whitney. They sent a 4000 in a 1000 box. Thing kicks *** it has a seperate no load rev limiter for launches, among other features.

rx7man13b

so only sensors needed would be TPS and CAS for sensing load. I hope it helps my gas milage my boy has the same setup but he uses a dizzy and gets like 18mpg

Natey

iTrader: (19)

Even I know what an FC1000 is, and I'm an idiot.

MazdaTed

A) the way you wrote your first email was extremely
confusing,
since you were Typing
like
I am right now
, hard to read isnt
it?

B) It sounds to me like he was asking you How YOU put the TPS on the carb, as if he was trying to figure out if you did anything wrong while installing it.


Most likely it was a misunderstanding.

rx7man13b

A) I didnt write it like that when the email was replyed back so many times it just came back like that.

B) Maybe it was a misunderstanding but I learned to ask my questions here on rx7club.com where I can get the right answer. Thanks guys

Natey

iTrader: (19)

EDIT: edited.

HAILERS

Download the Series five FSM (I know you have S4) and look at page F2-74. That page is called RELATIONSHIP CHART.

At the bottom it shows the items that effect Lead and Trail timing.

If I were to use a carb, I'd buy a USED dizzy out of a 82-84 RX-7, much like what RB suggested. You'd also need one coil assy for the Lead and one for the Trail coil.

The Ignitors are incorporated into the Dizzy. I don't think it'd be too difficult to wire it up. Never done it that way. Have put ECU and coil assy's off a 86 in a 82.....briefly. Just the opposite of what your doing.

You have to give the RB and Mazdatrix places a little slack. I asked the Mazdatrix counter guy if he had a used double throttle diaphram and he didn't know what it was. I got over him not knowing.

That said, RB makes those Holley conversions and should know better. Odd.

Here's a jpg of the coil arrangement for a first generation. I downloaded it yesterday using a phone line. Took thirty to forty minutes.

The jpg will probably not be that clear, so I suggest downloading the wiring for the first gen to your hard drive.

Icemark

Seems that racing beat knows it exactly right, and you rx7man13b didn't know $hi^

You set up your car funky (not even sure how you wired up a FC1000 ignition box to the CAS- the wouldn't be any spark advance (which funny.... they said the same thing). Hell I thought the FC1000 was just a CDI, not an ignitor.

So I guess you think they don't know **** because they don't know the abbreviations that you used??? Or what a FC1000 does???

Kinda sad... if I were you I'd have this thread deleted before people start really laughing.

wargoblin

It's not hard at all, ever watched Star Trek?

Also, at work I have to answer E-Mails all the time and honestly. I imagine RB is in the same boat at me. An average of 160 emails a day is pretty harsh. If one email isn't clear enough, I usually end up giving a short answer with not a lot of deep thought and jump to the next one. I'd give them some slack. However, they should at least know what an FC1000 is.

RETed

Did you purchase the carb "kit" from Racing Beat brand new?
We already know the POS Jacobs FC1000 box wasn't purchased from them.
So you're using a "hudge podge" of parts to try and get your now NON-STOCK fuel system FC to run, and you're scratching your head wondering why Racing Beat themselves can't help you?
Thank god I'm not in customer service!


-Ted

HAILERS

Go to this thread: https://www.rx7club.com/forum/showth...ghlight=timing

Ignore most all the posts by others than HENRIK and WHITEFC (in the above thread), and read a little by NZCONVERTIBLE. It should explain a little about the timing. What I did was do an Advanved Search and put in for a name HENRIK and subject was TIMING. There are several threads. I'm not saying HENRIK knows everything about timing, just that he is heavily involved in the RTEK2.0 which should give one a clue about if he knows what he talks about. He does.

arghx

iTrader: (3)

bah

rx7man13b

Thanks HAILERS for the info
And for the people who were so offended, sorry. My car is way faster than it was stock and I highly reccomend the FC1000 it was an imediate boost in low end tourque that you lose when removing the 5th and 6th ports. My car runs fine other than 10 mpg. After reading through what HAILERS suggested I will be going to a distributor and if its not better Ill switch it back I just wish there was a bolt on that I could use that works with the CAS and ECU

HAILERS

Why *BAH*???

rotarydelight

Im Not Too Familiar With Carb Setups, But Why Would You Have The Stock Fuel Injection Computer In A Car Running A Carb?

staticguitar313

iTrader: (2)

Wh y the HELL would you go to a carb setup anyways?

Sideways7

iTrader: (7)

Because you don't want to spend the time/money to do a proper FI setup.

Icemark

to control the spark

NZConvertible

The stock ECU doesn't use the TPS as a load input, so without an AFM there will be no load-based adjustment of ignition timing whether the TPS is there or not.

10mpg = NOT running fine. It's using 50-70% more fuel that it should be, which indicates a major problem. If you're so fond of carbs then complete the half-assed conversion and install an ignition system that actually works with a carb.

Fitness Stain

dude the guys at racing beat are great and very nice

they have been always cool as **** to me ... answered every question ... shipped parts for free ... all sorts of stuff ... i recommend them to anyone ... great customer service and GREAT parts.