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Okay, so Don posted a mod from the UK site regarding the Honda VF coils being a direct fit. Don also mentioned that they were close to stock coils as far as secondary impedance being somewhere around 15k ohms. I know there are lists out there for modern R/R's, lists for ACCT's, but has anybody made a list for Ignition coils? I guess I am looking for modern coils from newer bikes that would be close to a direct fit for our bikes. 1.5 ohm, or 3 ohm dual-output coils. I'm not going to buy Dynatek's, so if Honda VF coils are my only option, then so be it.
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1979 XS1100F
2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights. -
You could buy Accel's, they cost even more than Dynatek's.
2H7 (79) owned since '89
3H3 owned since '06
"If it ain't broke, modify it"
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Haha Phil. At a little over a $130, I guess they would not be the worst buy. But, I was wondering if there was anything off a modern 4cyl. bike that would work.1979 XS1100F
2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.Comment
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As I stated, I just pulled the info posted on the UK site to know those would work. So I do not know any other alternatives.
Keep in mind also if cost is your driving factor, that coils from a newer bike will carry a newer bike price tag with them.
Life is what happens while your planning everything else!
When your work speaks for itself, don't interrupt.
81 XS1100 Special - Humpty Dumpty
80 XS1100 Special - Project Resurrection
Previously owned
93 GSX600F
80 XS1100 Special - Ruby
81 XS1100 Special
81 CB750 C
80 CB750 C
78 XS750Comment
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Hey Ian,
Another problem is that NEWER ignition systems use CDI type ignitions and their coils are 0.7 ohms. And I recall Crazy Steve telling about other modern coils...can't recall if they were automotive ones, but they needed a special ignition system that controlled how long the power was supplied to the coils, Dwell control IIRC, and without that they would burn up with older standard type ignition systems.
SO....finding a list of "MODERN" coils may not be possible due to the mismatch with our ignition system. I just checked, and found that the Honda VF1000r was made from 1984 to 1988, not really MODERN, and so that's partly why they can match our ignition system. But as stated, they are also close to OEM in 2ndary impedence, and so they are probably close to the same power output ~15 kv.
DynaTek provides very high output type coils that properly match our ignition system and provide twice the spark energy of OEM coils. Many folks have reported the multiple benefits of stronger coils/spark, easier quicker starting, smoother engine performance at idle and low throtttle response. I would suspect less likely to foul. We have reported that we don't ncessarily get any better fuel economy, but the seat of the pants feels like they have more power overall.
T.C.T. C. Gresham
81SH "Godzilla" . . .1179cc super-rat.
79SF "The Teacher" . . .basket case!
History shows again and again,
How nature points out the folly of men!Comment
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Yeah, I spent my whole lunch researching coils from many bikes. The few I've found from older Kaw ZX bikes, Yamaha FZ1's, and a few others will work. In the end, I may go with the VF or Dynatek coils. I was able to find time today to.break my bike down for the Winter. Out of curiosity I checked my secondary side of the coips and saw 25k ohms oout of each coil.1979 XS1100F
2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.Comment
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Yep, dwell control and the ones I looked at were for bikes and had the 'correct' 3 ohm primary. So without knowing what kind of ignition system the donor bike has, it could be a crapshoot.Originally posted by TopCatGr58 View Post
I'm with Rasputin, buying a used coil not much newer and with dubious history just doesn't seem like a money-smart thing to do...Fast, Cheap, Reliable... Pick any two
'78E original owner - resto project
'78E ???? owner - Modder project FJ forks, 4-piston calipers F/R, 160/80-16 rear tire
'82 XJ rebuild project
'80SG restified, red SOLD
'79F parts...
'81H more parts...
Other current bikes:
'93 XL1200 Anniversary Sportster 85RWHP
'86 XL883/1200 Chopper
'82 XL1000 w/1450cc Buell, Baker 6-speed, in-progress project
Cage: '13 Mustang GT/CS with a few 'custom' touches
Yep, can't leave nuthin' alone...Comment
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Here's a set of DC1-1 Dynateks for under $120.00
http://www.ebay.com/itm/Dynatek-Coil...#ht_4969wt_9041980 XS1100G "Dolly G" Full Dresser (with a coat of many colors
)
1979 XS1100SF (stock-euro mods planned)
1984 XV700L Virago (to be hot-modded)
1983 XJ750MK Midnight Maxim (semi-restored DD)
1977 XS650D ( patiently awaiting resto)
Sometimes it takes a whole tank of gas before you can think straight.
Comment
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If you left the plug caps on the wires then 25k is what you should see. 15k for the coil and then 5k for each plug cap.Originally posted by IanDMacDonald View PostNathan
KD9ARL
μολὼν λαβέ
1978 XS1100E
K&N Filter
#45 pilot Jet, #137.5 Main Jet
OEM Exhaust
ATK Fork Brace
LED Dash lights
Ammeter, Oil Pressure, Oil Temp, and Volt Meters
Green Monster Coils
SS Brake Lines
Vision 550 Auto Tensioner
In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.
Theodore RooseveltComment
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Why don't you want to buy Dynateks?78 E - 2to1 exhaust, dynatek coils, special headlight [SOLD!]
79 F - gas tank refurb, headgasket change, straight pipes, late model carbs, virago lowering shocks, special headlight and gauges, TC fuse block, GSXR-1100 carbs (WIP)
"May my tires not fail me, nor my engine grow cold"Comment
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I may come tax return time. I was just curious as to my options. I may buy a newer R/R as well.Originally posted by D0wn5h1ft View Post1979 XS1100F
2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.Comment
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I've been running Honda Fireblade (93-96) coils on all my bikes for many years now without problems. They also cost absolutely nothing when secondhand. Just drop the resistor under the fuel tank. Don't know about other years, 93-96 was what I had lying around. Only downside is that the second mounting hole does not line up, I solved that with a tywrap. I' m sure there are some more professional ways to do that
XS1100 3X0 '82 restomod, 2H9 '78 chain drive racer, 3H3 '79 customized.
MV Agusta Brutale 910R '06.
Triumph 1200 Speed Trophy '91, Triumph 1200 '93.
Z1 '73 restomod, Z1A '74 yellow/green, KZ900 A4 '76 green.
Yamaha MT-09 Tracer '15 grey.
Kawasaki Z1300 DFI '84 modified, red.Comment
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