spark plug turbo-boosted
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spark plug turbo-boosted
Got a 1993 Honda prelude si with a h23a1. I just boosted it and doing the finishing touches. This includes replacing my spark plugs. I have the stock equivalent NGK zfr6f-11 right now. I know the the boosted engine will require a plug change in type and heat range. Any suggestions of a good choice (i would like to stick with NGK since I've had good luck with them but open to suggestions)? Thanks a million in advance!
#2
Man U FTW
Re: spark plug turbo-boosted
NGK BKR-7E is the commonly-used turbo plug. Here is a link from the Forced Induction FAQ which might shed a little more light on your situation: https://honda-tech.com/forums/forced-induction-16/ngk-spark-plugs-everything-you-ever-wanted-know-more-510127/
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Re: spark plug turbo-boosted
To say a "7" is a normal plug is absurd. If his setup is mild enough it may only need one step colder. It really depends on a lot of factors. You go colder when the plug shows you need to. Lower horsepower typically uses 7s or 8s. Moderate uses 8 to 9s. Higher horsepower builds 9 to 10, and extreme applications 11s+...
To actually be able to help the OP we need more details of the setup and horsepower goals than the vague nothing that was posted.
To actually be able to help the OP we need more details of the setup and horsepower goals than the vague nothing that was posted.
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Re: spark plug turbo-boosted
Its a mild setup hoping to gain maybe 100hp. Isn't the "7" one step colder and a good choice? Should I stick with the "zfr" or the "bkr" and drop to the "7"?
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#8
Man U FTW
Re: spark plug turbo-boosted
Originally Posted by me
NGK BKR-7E is the commonly-used turbo plug
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Re: spark plug turbo-boosted
I think I'm going to order a set of the "bkr's" and see how it works out. The chart was helpful. Any ideas on*gap preference? I think I'll start at .030 and then check them. I have a msd digital igntion with a msd rotor and cap, large Taylor wires too. Any thoughts?
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Re: spark plug turbo-boosted
I thought I would work my way open more. Why tighter? I am running a msd ignition, plugs wires and cap, if that matters any on gapping....
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Re: spark plug turbo-boosted
The bigger the gap the harder your ignition has to work to complete the connection (spark). Also, the wider the gap the easier it is for the turbulance to "blow the spark out". If you have "break up" problems, you would go tighter and tighter. Once you start hitting 0.016" - 0.018" it is time to get a better ignition.
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Re: spark plug turbo-boosted
Bigger gap, longer arc.
When you have forced induction (air) it blows away the arc.
Smaller gap, smaller arc, the arc won't blow out so easy.
If you have ignition break up at a larger gap you'll drop the gap down small increments at a time till the blow out dosent occur.
Edit- took wayy to long to type that lol, neva pretty much said it first
When you have forced induction (air) it blows away the arc.
Smaller gap, smaller arc, the arc won't blow out so easy.
If you have ignition break up at a larger gap you'll drop the gap down small increments at a time till the blow out dosent occur.
Edit- took wayy to long to type that lol, neva pretty much said it first
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Re: spark plug turbo-boosted
When you experience this "blow out " what does it feel or sound like? This is my first turbo car ever so excuse my ignorance but it still seems like you would gap small and go larger till I would experience this "blow out " then back down a notch. So I would know I had the largest gap possible. I understand what everyone is saying but not understanding the method....
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Re: spark plug turbo-boosted
Then do what you want and reinvent the wheel. Why even ask silly questions? Why don't you just try it and find out for yourself? You act like this is the first time somebody has ever slapped a turbo on a Honda, let alone tried to make your silly low horsepower goals.
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Re: spark plug turbo-boosted
Thanks teg, that's what I was looking for, and for the above post yea I know its a bit in depth in something that really isn't a big deal or job.I just wanted to cover everything that way when someone else wants to know its already out there in www, and helps me also. The more knowledge on even the slightest things is what keeps me and a lot of others turning wrenches everyday with results that make us very happy. Even though my car is not going to be making 600hp now, its goin to run perfect! oh and I will have 600hp someday in my street car sir and it's still gona run perfect.
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