overcoming 3B single coil pack problem

[Albert]

I will be facing soon a problem with misfire on 3B engine coming close to 400hp. I know that Mihnea in http://www.s2forum.com/forum/showthread.php?t=1336 posted a way of transforming system for 5 coils.

But are there any other ways to do it ? has any one do it ?

[91_S2]

I think Tommy Arnberg of Audi 20V_Kruemmer used some Volvo coils. In general, Tommy is a pretty inventive guy. He does more "mix and match" than anybody I have seen.

[Albert]

I have the hardware form AAN but need info on how to ...

[91_S2]

Well to start with you need an AAN, ABY or ADU Motronics box. The 3B won't work. The Dizzy is different too IIRC.

Put up a flare to Paul N. He can help you.

[SteveH]

Albert,

I've heard of at least two 3B's that were running the best part of 500bhp on the original 3b ignition without any problems. Perhaps you have a weak coil, plug or HT lead?

[Albert]

SteveH: I'm not there yet ... but I'm trying to secure my self and prepare befor I get in to torbule ... but if You are talking that 500HP is still runing on than ... i will sleep ok and 420HP will be posible than ... on stock coil ... or just change the coil to more eficient one

[Mihnea]

The coil might be a bit weak, but one coil is definitely still ok past 400 HP. Maybe just get a better coil, capacitive discharge or something like that and you should be ok.

HTH,

Mihnea

[Albert]

weak coil, plug or HT lead?

what is plug and HT lead ? sorry for my bad english

I have changed the wire's form the coil to the spark plugs, and they are also new.

[SteveH]

Albert,

Plug = spark plug
HT Lead = High tension lead or spark plug wire.

If you've already changed the wires your half way there

what is plug and HT lead ? sorry for my bad english

I have changed the wire's form the coil to the spark plugs, and they are also new.

[Albert]

The spark plugs are also new ... i just need to change the coil

Does any one have info o the stock coil ?

Would this would be a good replacment ?
Primary Resistance: 0.7 ohms
Secondary Resistance: 4.7K ohms
Maximum Voltage: 45,000 volts
Inductance: 8 mH
Turns Ratio: 100:1
Peak Current: 140 mA
Spark Duration: 350 Us


Is there a need to change the distribiutor ?

[Albert]

or that ?

Primary Resistance: 0.44 ohms
Secondary Resistance: 3.1K ohms
Maximum Voltage: 48,000 volts
Inductance: 7 mH
Turns Ratio: 85:1
Peak Current: 300 mA
Spark Duration: 250 Us

Primary Resistance: .355 ohms
Peak Current: 300mA
Secondary Resistance: 6.2K ohms
Spark Duration: 180uS
Maximum Voltage: 48,000 volts
Primary Inductance: 6mH
Turns Ratio: 70:1

[leo]

Albert, zmien cewke na taka z V8, da rade, mam taka, jest wieksza od tej oryginalnej z S2 3B.

I think the Audi V8 coil will do.

[Albert]

Leo ... thanks just have found out what MSD coil to use

[91_S2]

Albert, zmien cewke na taka z V8, da rade, mam taka, jest wieksza od tej oryginalnej z S2 3B.

I think the Audi V8 coil will do.

Leo, I sent you a private message.

[1975DCS]

Leo ... thanks just have found out what MSD coil to use

Okay with which one did you end up than?