boost and plug gap
#5
There's a lot of things that causes this for me. I run Autolite 3924(one heat range colder). First of all, the gap is much shorter than say stock, so fuel cannot burn as efficiently. Second, with 15psi boost, that force blows right past the stock rings(blowby), leading to quicker fouled plugs. Also, the plugs are not meant for boost/racing. They are a street plug, that actually work well. Plus, they only cost $13 for 8. I wish I could explain it better, but basically: street plugs + 15psi + blowby + .025 = quicker spark blowout. Also, the car does run a bit rich(purposely) to save my head gaskets.
Last edited by NoGo95GT; 08-15-2009 at 11:53 PM.
#7
With the lower gap, the spark has to travel less which reduces spark blowout. Anytime more than 4 pounds of boost is seen in force induction engine the spark has tendency to be blown out, hence the reduced gap.
Thread
Thread Starter
Forum
Replies
Last Post
jwog666
Pipes, Boost & Juice
11
12-27-2021 08:09 PM
breaking
Audio/Visual Electronics
5
10-02-2015 01:27 PM