Spark Plug Gap

Discuss Electrical problems here.
Forum rules
By using this site, you agree to our rules. Please see: Terms of Use
Post Reply
Tim01577
Minor Friendly
Posts: 10
Joined: Sun Jul 08, 2018 5:01 pm
MMOC Member: Yes

Spark Plug Gap

Post by Tim01577 »

Hello. Every one
I have electronic ignition and a high output coil on my 1098 engine, I am lead to believe that the gap for the plugs should be increased from 25thou but what to ?
This is to increase the power on the engine and also the fuel consumption.
philthehill
Minor Maniac
Posts: 10767
Joined: Thu Jul 19, 2012 12:05 pm
Location: Hampshire
MMOC Member: Yes

Re: Spark Plug Gap

Post by philthehill »

You can set the spark plug gap to 0.030".

I have a Luminition high output coil and have increased the plug gap which gave a noticeable increase in engine response.

Make sure that your distributer cap, plug leads, plug caps and plugs are in good condition otherwise the increase in coil output may cause those items to break down.

I think that you mean 'decrease' the fuel consumption and not 'increase' fuel consumption otherwise it defeats the purpose.

KeithL
Minor Fan
Posts: 449
Joined: Mon May 24, 2010 9:06 pm
Location: Worcestershire
MMOC Member: Yes

Re: Spark Plug Gap

Post by KeithL »

I am just about to by a Pertronix Flamethrower coil and was advised to set the gap to 40 thou.

philthehill
Minor Maniac
Posts: 10767
Joined: Thu Jul 19, 2012 12:05 pm
Location: Hampshire
MMOC Member: Yes

Re: Spark Plug Gap

Post by philthehill »

If you are fitting the Flamethrower 2 or 3 at 45,000 volts output it should cross a 1/2" gap. :wink:

https://pertronix.com/canister_coils.

Post Reply