Afr spack plug application

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Nov 2, 2008 | 07:49 PM

twin540

Thread Starter

Pro

Joined: Feb 2007

Posts: 740

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From: San Antonio TX

Afr spack plug application

ok ,I just installed a set of afr 195. What do any of you afr owner recommend for spark plugs? I'm having trouble finding the right plug.. one is to short or to fat please help..

Nov 2, 2008 | 09:24 PM

John A. Marker

Le Mans Master

Joined: Mar 2004

Posts: 5,107

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From: Dublin CA

I have the AFR 180's, but the documentation that came from AFR with these heads recommends AC FR3LS or Champion RC9YC for street application. Be sure to use antiseize on the threads.

Nov 3, 2008 | 11:40 AM

aklim

Team Owner

Joined: Jul 2004

Posts: 28,414

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From: Hartford WI

I am using NGKs. Champion seems fine in lawnmowers but not much else.

Nov 3, 2008 | 01:11 PM

0Tony Mamo @ AFR

Former Vendor

Joined: Mar 2004

Posts: 1,518

Likes: 7

From: Valencia CA

Quote:

Originally Posted by John A. Marker

I have the AFR 180's, but the documentation that came from AFR with these heads recommends AC FR3LS or Champion RC9YC for street application. Be sure to use antiseize on the threads.

We need to update that info....a "9" is colder than most need unless there was alot of boost or nitrous involved. An RC12YC or evan a "14" if its conservative on the CR with no nitrous (less than 10 to 1) would be fine.

Nothing wrong with the Champs btw....ran an RC12YC in my 610 HP 383 LS street engine (11 to 1 CR) with perfect results. With the price of plugs these days you can throw away alot of money needlessly....if the Champs are cheaper (as they usually are), go for it.

Hope this helps...

Thanks,
Tony

Nov 3, 2008 | 03:22 PM

89FX3

Racer

Joined: Aug 2007

Posts: 252

Likes: 1

From: Ellicott City, MD

Quote:

Originally Posted by John A. Marker

I have the AFR 180's, but the documentation that came from AFR with these heads recommends AC FR3LS or Champion RC9YC for street application. Be sure to use antiseize on the threads.

ACDelco 41-629.

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