My draw through turbo

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advinnie
Posts: 701
Joined: Mon Jun 10, 2013 6:54 am
Location: Oxfordshire

Re: My draw through turbo

Post by advinnie » Fri Sep 14, 2018 6:50 am

Hi all was just wondering what type of spark plugs are you lot using on your turbo bugs?
I'm using stock plugs and cause I'm running a draw through turbo set up they are sooting up badly and continually failing and it getting on my tits. Would using hotter or colder plugs help?
PS I can't lean her of anymore cause I will get detonation when on boost. I'm guessing it's the idles that are to big .40F8's but if I down size them to lean it off the engine will not idle at all it will run just not idle

madmike
Posts: 1469
Joined: Mon Jul 24, 2006 5:11 pm
Location: Atlanta,Michigan

Re: My draw through turbo

Post by madmike » Sat Sep 15, 2018 5:57 am

NGK's are what I run and I alway try running the coldest plug I can get by with I thinks 8's is whats in my 2276 (Higher the # the colder the plugs with the NGK's :wink:

advinnie
Posts: 701
Joined: Mon Jun 10, 2013 6:54 am
Location: Oxfordshire

Re: My draw through turbo

Post by advinnie » Sat Sep 15, 2018 7:28 am

I'm running NGK's 6 at the moment and they are getting sooty fast and fouling up within 50 to 100 miles they stop working so was wondering if they where to cold?
I know hotter plugs could cause pre ignition but if I lean the mains of anymore I get detonation. If I lean the idles of she just will not idle at all

madmike
Posts: 1469
Joined: Mon Jul 24, 2006 5:11 pm
Location: Atlanta,Michigan

Re: My draw through turbo

Post by madmike » Sun Sep 16, 2018 7:15 am

maybe your coil is getting weak?

advinnie
Posts: 701
Joined: Mon Jun 10, 2013 6:54 am
Location: Oxfordshire

Re: My draw through turbo

Post by advinnie » Sun Sep 16, 2018 11:12 am

Good point. I was looking at coils just the after day and was wondering what one to go for. I was looking at one of them square MSD coils or is there a better choice out there?

advinnie
Posts: 701
Joined: Mon Jun 10, 2013 6:54 am
Location: Oxfordshire

Re: My draw through turbo

Post by advinnie » Wed Sep 19, 2018 11:22 am

Replaced the coil with a basic Bosch one and all is goid. No more random misfire plug colours are all good and now back to 11 psi of constant boost. Going to replace the wastegate spring tomorrow and go for 15psi of boost.
I'm loving this little 1600 it can take so much abuse 😁

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