2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Installed Jacob's Rotary pack

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Old Oct 30, 2002 | 01:26 PM
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From: dallas,texas
Installed Jacob's Rotary pack

Well I noticed no real difference in performance (as expected) but man the car starts so much easier and on top of that it idle's really good now.

Anyway I got the Jacob's for $100 from a friend. He wrecked his second gen last week and parted it out....
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Old Oct 30, 2002 | 03:20 PM
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You got an excellent deal! I had one priced and never looked back since. I'm quite happy with my Crane Cams Ignition Box. Infact, It's paid Itself off with all the Fuel I have saved since I started using It.
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Old Oct 30, 2002 | 03:27 PM
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Which ignition system would you guys reccommend? You both seem to enjoy yours, what's best for the money?
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Old Oct 30, 2002 | 07:49 PM
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Crane Cams HI-6 or MSD 6A - either will give you about the same gains.
Note:&nbsp Crane Cams will deny their unit will work on the FC3S.


-Ted
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Old Oct 30, 2002 | 07:55 PM
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What gains does it actually give? About how much hp is gained? Just wanted to know.

kleach
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Old Oct 30, 2002 | 08:04 PM
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Hardly any HP Gain... from what I understand, the main benefits are better gas mileage and crisper throttle response. You may actually gain more torque than HP.
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Old Oct 30, 2002 | 08:16 PM
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Torque and HP are directly related. You cant get gains on one without gains on the other.
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Old Oct 30, 2002 | 08:17 PM
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Are ignition systems really worth the money?? What kinda of gas mileage increase did you guys get?
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Old Oct 30, 2002 | 08:19 PM
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did you put this on a TII, or NA? I cannot decide if I want to put an ignition box on my stock 'vert. I would like to get better gas mileage from it (i am only getting about 15mph), does anyone think I should? What does the setup require?
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Old Oct 30, 2002 | 08:23 PM
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Typically 1-3hp gain across the board.
Top end power is noticable improved.
Idle is smoother.
Mileage is slightly improved.
One of the best reasons to run one is that it fires very worn out plugs with very little fuss.&nbsp This keeps spark plug swaps minimized.


-Ted
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Old Oct 30, 2002 | 08:32 PM
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Just one MSD6A is needed?
RX7.com has some new rotary ignition box.

Ian
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Old Oct 30, 2002 | 08:36 PM
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hmm wonder if it could improve my 13-14mpg :P

of course city driving in LA probably helps totally kill my mileage...and of course i cant keep my foot out of it.

Ian, you can use 1 box for the leading plugs. to boost all 4 plugs you need 3 MSD boxes: 1 for leading and 1 for each trailing. many people just use 1 box on the leading since trailing supposedly won't do much unless you are laying down serious hp.
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Old Oct 30, 2002 | 09:15 PM
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what about jacobs? does that use one box for all 4?
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Old Oct 30, 2002 | 10:08 PM
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Thanks bingoboy.

Ian
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Old Oct 30, 2002 | 11:11 PM
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Can we get a unanimous decision on this? Is one box good for a car? Just for the leading plugs? For all four plugs?
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Old Oct 30, 2002 | 11:41 PM
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Originally posted by ponykiller
Is one box good for a car? Just for the leading plugs?
Yes, one box is enough. 95% of the work is done by the leading plugs. The trailing plugs are mainly there for economy and emissions.
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Old Oct 30, 2002 | 11:58 PM
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What are the capabilities of an ignition box.... does it alter anything
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Old Oct 31, 2002 | 12:01 AM
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one unit is all you need. I'm really happy with my Jacobs. It's the old model. My fuel mileage went up from 19/20 on the HWY to about 24/25. In the city it was about 15/16. It all depends on how much i'm on the gas. Idles wayyyy smoother and starts much better. I would recommend it, i think it pays for itself in the long run.
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Old Oct 31, 2002 | 12:04 AM
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Originally posted by bingoboy
1 for leading and 1 for each trailing.
Scratch that, reverse it.
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Old Oct 31, 2002 | 12:40 AM
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dam i want one. i wonder how much they are new??
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Old Oct 31, 2002 | 01:42 AM
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Originally posted by Liquid Anarchy
Scratch that, reverse it.
No, he was right. The leading coil is one double-post coil with one ignitor (wasted spark system); the trailing coil is actually two coils, each with an ignitor.

Last edited by NZConvertible; Oct 31, 2002 at 01:44 AM.
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Old Oct 31, 2002 | 01:55 AM
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What's the suggestion for the best ignition to run ie.

1. Jacobs ice pack
2. HKS rotary ignition
3. msd 6a (example)
4. crane ignition

Since I'm trying to do my car the smart way I'ld love to know which one I should buy
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Old Oct 31, 2002 | 02:01 AM
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Originally posted by RETed
Crane Cams HI-6 or MSD 6A - either will give you about the same gains.
Note:&nbsp Crane Cams will deny their unit will work on the FC3S.


-Ted
What model ted? I was looking at summitracing.com and they listed 2 MD6A'a

MSD-6200 &
MSD-8400

Any other items you need to use this? particular wiring changes or anything for it to work on a rotary>?
Thx

URL;
http://store.summitracing.com/defaul...rchType%3DBoth
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Old Oct 31, 2002 | 03:17 AM
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Originally posted by RETed
Crane Cams HI-6 or MSD 6A - either will give you about the same gains.
Note:&nbsp Crane Cams will deny their unit will work on the FC3S.


-Ted
I'll vouch for Crane Cams denying their unit will work on the FC3S It even says so on their site.

Mine died on me within a 1.5yr I owned It. I complianed to Crane Cams and they Immediately sent me a new one, despite the warranty being expired for over a year.

2yrs later... no problems.
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Old Oct 31, 2002 | 06:52 PM
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Originally posted by Rpeck
What model ted? I was looking at summitracing.com and they listed 2 MD6A'a

MSD-6200 &
MSD-8400

Any other items you need to use this? particular wiring changes or anything for it to work on a rotary>?
Should be the 6200 - the 8400 is only for GM HEI ignitions.&nbsp you can buy the 8400, but you'll waste the coil and wires.

I've got the wiring instructions on my website.


-Ted
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