Performance ignition hp gain?
Thread Starter
|
Intermediate
Joined: Mar 2022
Posts: 41
Likes: 2
From: ventura
Performance ignition hp gain?
Would a performance ignition add hp and torque?
I have cams head work and a big bore kit along with a 2 into 1 and air intake 107” from 96”
making 114hp and 117 tq would like to squeeze a little more hp and torque out of it
any suggestions?
I have cams head work and a big bore kit along with a 2 into 1 and air intake 107” from 96”
making 114hp and 117 tq would like to squeeze a little more hp and torque out of it
any suggestions?
Road Master
Joined: Jun 2019
Posts: 952
Likes: 528
From: Richmond TX
It seems unlikely if your plugs are firing with a strong spark already. Fresh plugs, good coils, and good, correct plug wires won't leave much, if anything for a different ignition system to pick up.
What you could do is index your spark plugs. That's supposed to be good for about 1 hp or so. You can buy a set of indexing washers (various thicknesses) and use the ones that place your plugs with the 'open' side of the plug gap facing the intake flow. Here's one source:
https://www.summitracing.com/parts/p...+5ba295f673048
What you could do is index your spark plugs. That's supposed to be good for about 1 hp or so. You can buy a set of indexing washers (various thicknesses) and use the ones that place your plugs with the 'open' side of the plug gap facing the intake flow. Here's one source:
https://www.summitracing.com/parts/p...+5ba295f673048
Road Warrior
Joined: Feb 2017
Posts: 1,528
Likes: 647
From: Saint Charles, Missouri
If someone made a 2 amp coil for Harley's you would have more than enough spark power to any running compression you could put in the motor and it still hold together. You would also have to buy new spark plug wire on an annual basis.
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,930
Likes: 8,033
From: poway
The stock ignition is more than enough. HD needed a real hot spark to light off lean mixtures.. Set the AFR for power and you have plenty of spark unless you want to run a 250 psi cranking pressure.
2 amp coil?? The stock TC coil is 1/2 ohm.. Add maybe 1/2 ohm for wiring and it's still a 12 amp coil.
2 amp coil?? The stock TC coil is 1/2 ohm.. Add maybe 1/2 ohm for wiring and it's still a 12 amp coil.
Grand HDF Member
Joined: May 2014
Posts: 3,844
Likes: 1,174
From: florida
i am going to assume that this is a carbed bike. based on that assumption, the reason for a performance ignition system is to gain better control of ignition timing and advance slopes, to me. Sure the stock system will fire the engine, but you do leave hp and tq on the table without having the added control. Time spend on the dyno to dial in the perfect timing and the proper advance slope can have very good results. Also, a good performance coil can have advantages,,,not in the way most people think though. The advertised high power outputs dont really mean much,, what matters is the quicker , i don t know what the proper term to use here is so i'm going to wing it, the quicker it can refresh/recharge. at high rpm the better coils can have a better handle on this. This is also not opinion, but my experience learned on dealing with my turbo charged Porche. The MSD coil worked much better than the stock coil....I will try to find the correct wording for this and report back.
m
m
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,930
Likes: 8,033
From: poway
@marcodarq
Yeah you are right on about that.. I read it wrong in that case.. You definitely need an adjustable ignition.. The coil and plug wires are more than adequate.
Yeah you are right on about that.. I read it wrong in that case.. You definitely need an adjustable ignition.. The coil and plug wires are more than adequate.
Road Warrior
Joined: Feb 2017
Posts: 1,528
Likes: 647
From: Saint Charles, Missouri
Max Headflow, the factory coils are 12 volt, not 2 amp! A 2 amp coil will do serious damage to you if you get shocked by one. Factory coils step the 12 volts up to around 50,000 volts, but at low amperage, below 1 amp. If you look at modern NHRA blown fuel cars, they run a pair of 44 amp magnetos, World of Outlaw sprint cars use a 4 amp magneto for the 410 cu.in. fuel injected motors.
Trending Topics
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,930
Likes: 8,033
From: poway
Max Headflow, the factory coils are 12 volt, not 2 amp! A 2 amp coil will do serious damage to you if you get shocked by one. Factory coils step the 12 volts up to around 50,000 volts, but at low amperage, below 1 amp. If you look at modern NHRA blown fuel cars, they run a pair of 44 amp magnetos, World of Outlaw sprint cars use a 4 amp magneto for the 410 cu.in. fuel injected motors.
Not sure what you meant here then..
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Road Warrior
Joined: Feb 2017
Posts: 1,528
Likes: 647
From: Saint Charles, Missouri
Max Headflow - If someone made a 2 amp coil for the Harley V-Twins, it would exceed the need for any street driven engine combination, and most racing combinations. Only the Top Fuel Harley's could use a more powerful coil. A 2 amp coil will ruin a set of RFI spark plug wires in about a year. The solid copper core wires would be a different story, but you won't find those on a motorcycle anymore.
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,930
Likes: 8,033
From: poway
Max Headflow - If someone made a 2 amp coil for the Harley V-Twins, it would exceed the need for any street driven engine combination, and most racing combinations. Only the Top Fuel Harley's could use a more powerful coil. A 2 amp coil will ruin a set of RFI spark plug wires in about a year. The solid copper core wires would be a different story, but you won't find those on a motorcycle anymore.
After all the coil is nothing more than a transformer.