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  #1  
Old 08-09-2012, 07:32 PM
Rob94hawk Rob94hawk is offline
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Default Need a coil with more amps for an LT1, 11.7:1 CR @ 6500 rpm NA.

As you can see from my sig I'm currently running an old Crane PS91 coil that only puts out 100mA. It's going through an MSD optispark distributor through 10mm Taylor Thundervolt wires to NGK Irridium plugs gapped @ .050".

I usually shift at 6500rpm and I'm currently experiencing high rpm misfires. Don't think the coil is no longer able to keep up. Since my compression ratio isn't all that high I'd like to keep the plug gap @ .050 and swap out the old coil for something that puts out more amps and can handle street and strip abuse.

Would like to run the HVC-2 coil if possible but it doesn't have the dual connector that I need. Is there a harness that I could use for this coil?

http://www.msdignition.com/Products/...Ignitions.aspx

Was considering this coil as well if I ever decide to go the nitrous route and need a 6AL-2 or Digital 6.

Thanx

1994 Firehawk, Red, T-tops, M6, Rebuilt 350, LE2 heads/cam, 11.7:1 CR, MSD Billet Optispark, Crane PS91 coil, NGK TR55-IX Iridium plugs gapped @ .050", BMR front end, stock rear, 3.42's, 424 rwhp/ 379 torque.(Mustang Dyno)
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1994 Firehawk, Red, T-tops, M6, Rebuilt 350, LE2 heads/cam, 11.7:1 CR, MSD Billet Optispark, Crane PS91 coil, NGK TR55-IX Iridium plugs gapped @ .050", BMR front end, stock rear, 3.42's, 424 rwhp/ 379 torque.(Mustang Dyno)

Last edited by Rob94hawk; 08-09-2012 at 07:34 PM. Reason: Sig not displaying
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  #2  
Old 08-13-2012, 08:26 AM
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msdtech1955 msdtech1955 is offline
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you would actually be better running a 6 series unit and a hvc coil.
that way, you would have the current and voltage .
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Old 08-13-2012, 03:20 PM
Rob94hawk Rob94hawk is offline
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Quote:
Originally Posted by msdtech1955 View Post
you would actually be better running a 6 series unit and a hvc coil.
that way, you would have the current and voltage .
Which part #'s are we talking about? Thanx

And how much current are we talking about? The Blaster HVC II in the link above already puts out 450mA. Considering the engine is only NA and not forced induction I'm thinking 20 degrees of spark from the 6AL-2 might be a little overkill.
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1994 Firehawk, Red, T-tops, M6, Rebuilt 350, LE2 heads/cam, 11.7:1 CR, MSD Billet Optispark, Crane PS91 coil, NGK TR55-IX Iridium plugs gapped @ .050", BMR front end, stock rear, 3.42's, 424 rwhp/ 379 torque.(Mustang Dyno)

Last edited by Rob94hawk; 08-13-2012 at 08:51 PM.
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Old 08-14-2012, 06:54 AM
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msdtech1955 msdtech1955 is offline
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6425
http://www.msdignition.com/product.a...013&terms=6425

8252
http://www.msdignition.com/product.a...099&terms=8252

8876( just change the coil side to ring lugs)
http://www.msdignition.com/product.a...685&terms=8876

wez3.jpg
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  #5  
Old 08-14-2012, 04:12 PM
Rob94hawk Rob94hawk is offline
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Quote:
Originally Posted by msdtech1955 View Post
Can I use the 8252 and the harness without the 6AL?
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1994 Firehawk, Red, T-tops, M6, Rebuilt 350, LE2 heads/cam, 11.7:1 CR, MSD Billet Optispark, Crane PS91 coil, NGK TR55-IX Iridium plugs gapped @ .050", BMR front end, stock rear, 3.42's, 424 rwhp/ 379 torque.(Mustang Dyno)
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Old 08-15-2012, 06:52 AM
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msdtech1955 msdtech1955 is offline
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no sir,..............that coil "has to be used with a 6 series ignition"
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Old 08-15-2012, 08:51 PM
Rob94hawk Rob94hawk is offline
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A friend is going to sell me his Digital 6 (#6520) but he also has coil #8226 with it but I'd like to use the #8252 coil. Is the 8226 coil with the Dig 6 a good combo or should I go with the 8252? Thanx
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1994 Firehawk, Red, T-tops, M6, Rebuilt 350, LE2 heads/cam, 11.7:1 CR, MSD Billet Optispark, Crane PS91 coil, NGK TR55-IX Iridium plugs gapped @ .050", BMR front end, stock rear, 3.42's, 424 rwhp/ 379 torque.(Mustang Dyno)
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  #8  
Old 09-22-2012, 02:48 PM
Gaz64 Gaz64 is offline
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With over 11.5:1 compression, you don't need .050 plug gaps.

I'd run in the .035 - .040 range.

20 degrees of spark duration is not overkill.

Some factory HEIs run more than 20 degrees.
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