T.I. amplifier replacement module
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Melting Slicks
Joined: Jan 2000
Posts: 3,326
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From: home
T.I. amplifier replacement module
Next on my list is to reinstall the T. I. ignition module. Anyone have experience with aftermarket modules that fit inside the oem amplifier housing? I've seen two types, one like Paragon sells and one that looks like a green colored circuit board with updated components. My car is an original K66 car that currently I'm running the oem distributor and a msd 6a box. I'm leaning towards the Paragon one since it works with any coil and doesn't need to use the expensive T.I. coil. I'm using a msd 8207 coil. It is the only one that fits inside the 69 distributor box using a 67 435 intake manifold. I'll have to change the harnesses since the original owner changed the plugs where the amplifier harness connects to the car harness. He made is so you would unplug the amplifier and take it with you. A somewhat crude, but effective way to prevent the engine from starting. New reproduction plug wires came with a disclaimer not to use aftermarket hi perf coils or ignition systems. Thanks.
Mark
Mark
Drifting
Joined: Aug 2006
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From: Scottsdale Arizona
Melting Slicks
Joined: Oct 2001
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From: Halifax, Nova Scotia, Canada
I've been using one from TI Specialty for several years. Works great, no issues. http://www.tispecialty.com/amplifiers.htm
Thread Starter
Melting Slicks
Joined: Jan 2000
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From: home
New Lectric Limited plug wires instructions say not to use them with aftermarket hi perf coils and ignition systems, may reduce reliability and void warranty.
Thread Starter
Melting Slicks
Joined: Jan 2000
Posts: 3,326
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From: home
I've been using one from TI Specialty for several years. Works great, no issues. http://www.tispecialty.com/amplifiers.htm
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Racer
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From: Michigan
Thread Starter
Melting Slicks
Joined: Jan 2000
Posts: 3,326
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From: home
I saw that but the instructions say to use stock t.i. coil only. I have a msd coil- it is the only coil I found that fits inside the 69 distributor box with the 67 435 intake manifold. I tried a 67 distributor box to use the stock coil, but it doesn't look right on my 69.
Racer
Joined: Sep 2011
Posts: 444
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From: Michigan
I had the same question. This is my thread that helped.
https://www.corvetteforum.com/forums...rent-coil.html
https://www.corvetteforum.com/forums...rent-coil.html
Pro
Joined: Jul 2004
Posts: 713
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From: Waterford CT
I used the K&B special products board in my LT-1 and it's still working great after 8 years. I'd recommend it and would use it again if I needed one.
FYI - I replaced the stock board in search of better cold start performance and failed to get any improvement. I've concluded it's the big Holley that's responsible for the reluctant cold starting of the LT-1 engine.
FYI - I replaced the stock board in search of better cold start performance and failed to get any improvement. I've concluded it's the big Holley that's responsible for the reluctant cold starting of the LT-1 engine.
Thread Starter
Melting Slicks
Joined: Jan 2000
Posts: 3,326
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From: home
Thread Starter
Melting Slicks
Joined: Jan 2000
Posts: 3,326
Likes: 523
From: home
I called K&B and they said stock t.i. coil only. Ok, for you electrical guru's these are the specs for the coil I'm using. Looks like I'll need to go with the Paragon version unless these specs are acceptable for the K&B module.
Inductance 6.9 mH
Peak current 300 mA
Primary resistance .355 OHMs
Secondary resistance 4.4K OHMs
Spark duration 220 uS
Turns ratio 70:1
Inductance 6.9 mH
Peak current 300 mA
Primary resistance .355 OHMs
Secondary resistance 4.4K OHMs
Spark duration 220 uS
Turns ratio 70:1
Tech Contributor
Joined: Jun 2004
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From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
I called K&B and they said stock t.i. coil only. Ok, for you electrical guru's these are the specs for the coil I'm using. Looks like I'll need to go with the Paragon version unless these specs are acceptable for the K&B module.
Inductance 6.9 mH
Peak current 300 mA
Primary resistance .355 OHMs
Secondary resistance 4.4K OHMs
Spark duration 220 uS
Turns ratio 70:1
Inductance 6.9 mH
Peak current 300 mA
Primary resistance .355 OHMs
Secondary resistance 4.4K OHMs
Spark duration 220 uS
Turns ratio 70:1
The turns ratio takes whatever the plug arc voltage is, divides that down by the ratio, and that's the voltage that the module internal circuitry has to contend with every ignition event. The original TI coil had a high turns ratio so that it didn't blow up the germanium switching transistor or the clamping zener diode. A newer design board is probably more robust, but I would consult the manufacturer of whatever board you use, and ask them if they have any concerns about that turns ratio.
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Melting Slicks
Joined: Jan 2000
Posts: 3,326
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From: home
Thanks 69427. I'll call Paragon tomorrow and ask even though their website it works with any coil. And I'll also re-look at maybe figuring a way to mount the t.i. coil inside the distributor box.