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Author Topic:   Spark Plugs
67Coupster
Gearhead

Posts: 189
From: Fortson, GA, USA
Registered: Oct 2001

posted 03-23-2002 06:29 AM     Click Here to See the Profile for 67Coupster   Click Here to Email 67Coupster     Edit/Delete Message   Reply w/Quote
A friend of mine just bought some Champion Race plugs that we have available locally. They were already side gapped and had a very thick ground electrode. I currently run 3923 Autolites in my AFR heads.

Has anyone ever used these plugs and if they are good what would the PN be for my application? My motor is 10.5:1 compression.

Been trying to clean up my idle some, runs pretty rich right now. Took away some mechanical advance to where I could run more initial and that helped quite a bit. Initial now at 15 with total about 34 degrees. It was at 8 and total 34. Thanks!!

------------------
James
67 Coupe
393W, AFR 185, 4 Speed, 4.11 9 inch
7.34 @ 96MPH 1/8
1.66 60'

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Moneymaker
Administrator

Posts: 27499
From: Lyons, IL, USA
Registered: May 99

posted 03-23-2002 12:21 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
What's the part number please? I don't like Champions as a rule but I will give my oppinion.

------------------
Alex Denysenko
Co-Administrator and Moderator/ non 65-66 Mustang owner sensitivity co-ordinator

NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
US Class Nationals link

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V8 Thumper
Gearhead

Posts: 4681
From: Phoenix, Arizona
Registered: Dec 2001

posted 03-23-2002 02:46 PM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Moneymaker:
I don't like Champions as a rule

Neither do I. Come to think of it, I don't know anyone who does. Why is that? Do they really suck that bad?

I won't even run them in my lawnmower

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67Coupster
Gearhead

Posts: 189
From: Fortson, GA, USA
Registered: Oct 2001

posted 03-23-2002 06:35 PM     Click Here to See the Profile for 67Coupster   Click Here to Email 67Coupster     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Moneymaker:
What's the part number please? I don't like Champions as a rule but I will give my oppinion.


PN C59CX, I'm not a big fan of Champion plugs myself but these did look nice.

------------------
James
67 Coupe
393W, AFR 185, 4 Speed, 4.11 9 inch
7.34 @ 96MPH 1/8
1.66 60'

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Just Strokin
Gearhead

Posts: 754
From: Tuscaloosa, Alabama
Registered: Dec 2001

posted 03-23-2002 08:20 PM     Click Here to See the Profile for Just Strokin   Click Here to Email Just Strokin     Edit/Delete Message   Reply w/Quote
59 is a pretty cold heat range plug. I ran 61's and 63's in my BBF.

Unless you have the tool for the side gap plugs, they are a bear to gap.

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chips67
Gearhead

Posts: 663
From: louisville, ky, usa
Registered: Jul 2001

posted 03-23-2002 09:41 PM     Click Here to See the Profile for chips67   Click Here to Email chips67     Edit/Delete Message   Reply w/Quote
have always had my best luck with cheap autolites and motorcrafts. all the zooty "quadruple electrodee platinumus splitfire" plugs fail to beat most $.89 autolites....champions/ac delco/accel/bosch all stink in my experience. are the plugs you are running the ones afr recomended?

------------------
67 coupe, 650dp and rpm intake on 5.0 with afr 165 heads, 4 speed, 4.11's.....best so far is [email protected] in 1/8 mile with 1.79 60ft. time.

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67Coupster
Gearhead

Posts: 189
From: Fortson, GA, USA
Registered: Oct 2001

posted 03-24-2002 06:26 AM     Click Here to See the Profile for 67Coupster   Click Here to Email 67Coupster     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by chips67:
have always had my best luck with cheap autolites and motorcrafts. all the zooty "quadruple electrodee platinumus splitfire" plugs fail to beat most $.89 autolites....champions/ac delco/accel/bosch all stink in my experience. are the plugs you are running the ones afr recomended?


Yes but cross referenced to a Autolite number,3923. I think my AFR paperwork recommended a AC plug. A friend of mine told me Autolite also makes a side gapped plug that I can get locally also. He said he picked up a 1/10 in the 1/8. That was on a tubbed, lenco, stroked iron head clevend car.They are not anything fancy as far as material just side gapped and have a larger width ground strap. I guess the idea is to better expose the spark kernal to the chamber.

------------------
James
67 Coupe
393W, AFR 185, 4 Speed, 4.11 9 inch
7.34 @ 96MPH 1/8
1.66 60'

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Moneymaker
Administrator

Posts: 27499
From: Lyons, IL, USA
Registered: May 99

posted 03-24-2002 06:12 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
Too cold for your application.

------------------
Alex Denysenko
Co-Administrator and Moderator/ non 65-66 Mustang owner sensitivity co-ordinator

NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
US Class Nationals link

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67Coupster
Gearhead

Posts: 189
From: Fortson, GA, USA
Registered: Oct 2001

posted 03-24-2002 06:54 PM     Click Here to See the Profile for 67Coupster   Click Here to Email 67Coupster     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Moneymaker:
Too cold for your application.


Thanks Alex, I look at finding the autolite side gapped plugs in my current heat range. You wouldn't happen to know that PN would you? Use 3923's now. Thanks again.

------------------
James
67 Coupe
393W, AFR 185, 4 Speed, 4.11 9 inch
7.34 @ 96MPH 1/8
1.66 60'

IP: Logged

chips67
Gearhead

Posts: 663
From: louisville, ky, usa
Registered: Jul 2001

posted 03-24-2002 10:48 PM     Click Here to See the Profile for chips67   Click Here to Email chips67     Edit/Delete Message   Reply w/Quote
which plugs are you saying are too cold alex? coupster, do you launch off a 2-step? could side-gap plugs help me? are they streetable?

------------------
67 coupe, 650dp and rpm intake on 5.0 with afr 165 heads, 4 speed, 4.11's.....best so far is [email protected] in 1/8 mile with 1.79 60ft. time.

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Dave_C
Gearhead

Posts: 1069
From: Gadsden, Al
Registered: Aug 99

posted 03-25-2002 12:01 AM     Click Here to See the Profile for Dave_C   Click Here to Email Dave_C     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by 67Coupster:
I look at finding the autolite side gapped plugs in my current heat range. You wouldn't happen to know that PN would you? Use 3923's now. Thanks again.

Autolite AR3932 is what you want. I have been using the AR series plugs for 2 years now. Love 'em.

Here is the listing for the Autolite Racing plugs. They have nickel plated bodies, a back-cut electrode (side gap). The listing is in .pdf format, so you need Adobe Acrobat to read it. This crossreference also has the Champion and NGK plugs. The C59CX is a little hotter than your plug, The C59CX crosses to a AR3933, one step hotter than yours. Your 3932 crosses to a C57CX. They are available for you in 4 heat ranges. The AR3932 is the coldest. Then AR3933, AR3934, AR3935 is the hottest.

http://cpgparts.alliedsignal.com/cpg/catalog/autolite/legal/RacingCrossRef.pdf

BTW, since you are in Ga, I know you have an Advance Auto Parts around somewhere. They can get these plugs for you overnight. Or at least they can get the ones I use (AR135 for my Windsor Sr iron). Only cost $1.79 each.

Later,

David Cole

[This message has been edited by Dave_C (edited 03-25-2002).]

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67Coupster
Gearhead

Posts: 189
From: Fortson, GA, USA
Registered: Oct 2001

posted 03-25-2002 06:04 AM     Click Here to See the Profile for 67Coupster   Click Here to Email 67Coupster     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by chips67:
Coupster, do you launch off a 2-step?

I don't have a 2-step, I light the top bulb set my line lock with a little pressure bring it up to my launch rpm bump the clutch till I light the bottom bulb and go.

------------------
James
67 Coupe
393W, AFR 185, 4 Speed, 4.11 9 inch
7.09 @ 97MPH 1/8
1.55 60'

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67Coupster
Gearhead

Posts: 189
From: Fortson, GA, USA
Registered: Oct 2001

posted 03-25-2002 06:06 AM     Click Here to See the Profile for 67Coupster   Click Here to Email 67Coupster     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Dave_C:
Autolite AR3923 is what you want. I have been using the AR series plugs for 2 years now. Love 'em.


Later,

David Cole


Thanks for the link and help David, I'll try and order some today.

------------------
James
67 Coupe
393W, AFR 185, 4 Speed, 4.11 9 inch
7.09 @ 97MPH 1/8
1.55 60'

IP: Logged

chips67
Gearhead

Posts: 663
From: louisville, ky, usa
Registered: Jul 2001

posted 03-25-2002 10:47 AM     Click Here to See the Profile for chips67   Click Here to Email chips67     Edit/Delete Message   Reply w/Quote
which is it...AR3932 or AR3923? im lost! can these plugs help me any?

------------------
67 coupe, 650dp and rpm intake on 5.0 with afr 165 heads, 4 speed, 4.11's.....best so far is [email protected] in 1/8 mile with 1.79 60ft. time.

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67Coupster
Gearhead

Posts: 189
From: Fortson, GA, USA
Registered: Oct 2001

posted 03-25-2002 11:53 AM     Click Here to See the Profile for 67Coupster   Click Here to Email 67Coupster     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by chips67:
which is it...AR3932 or AR3923? im lost! can these plugs help me any?


I went to the AFR website, they recommend using Champion RC9YC which cross references over to the Autolite AR3923. I also went to the link that David posted for the cross reference chart and printed it for future reference. I don't know if it will help or not but for about $16 I'll give it a try.

Later

------------------
James
67 Coupe
393W, AFR 185, 4 Speed, 4.11 9 inch
7.09 @ 97MPH 1/8
1.55 60'

IP: Logged

Dave_C
Gearhead

Posts: 1069
From: Gadsden, Al
Registered: Aug 99

posted 03-25-2002 01:16 PM     Click Here to See the Profile for Dave_C   Click Here to Email Dave_C     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by chips67:
which is it...AR3932 or AR3923? im lost! can these plugs help me any?

Sorry, I transposed the numbers. Fixed now. The plugs I was talking about as crossing to the side gapped Champions are are AR3932 through AR3935. Can't speak for your heads or plugs, but the AR plugs were worth .06-.07 in my car vs regular Autolite's. I consider that great for just a plug change.

BTW, I went to Advance Auto this morning ordered 2 sets of AR135 for my Windsor Sr irons. The price is now $1.59 each, at least for mine. Don't know on yours.

One other thing. They come pre-gapped due to the back-cut electrode. Don't mess with the gap.

Later,

David Cole

[This message has been edited by Dave_C (edited 03-25-2002).]

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Moneymaker
Administrator

Posts: 27499
From: Lyons, IL, USA
Registered: May 99

posted 03-25-2002 01:42 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
Ditto on the number and the gap!

------------------
Alex Denysenko
Co-Administrator and Moderator/ non 65-66 Mustang owner sensitivity co-ordinator

NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
US Class Nationals link

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67Coupster
Gearhead

Posts: 189
From: Fortson, GA, USA
Registered: Oct 2001

posted 03-25-2002 04:39 PM     Click Here to See the Profile for 67Coupster   Click Here to Email 67Coupster     Edit/Delete Message   Reply w/Quote
Could someone tell me the difference between the AR3923 and the AR3933? I've tried online but just can't figure it out.

------------------
James
67 Coupe
393W, AFR 185, 4 Speed, 4.11 9 inch
7.09 @ 97MPH 1/8
1.55 60'

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Dave_C
Gearhead

Posts: 1069
From: Gadsden, Al
Registered: Aug 99

posted 03-25-2002 05:14 PM     Click Here to See the Profile for Dave_C   Click Here to Email Dave_C     Edit/Delete Message   Reply w/Quote
They should be the same, except the 3923 is a resistor plug and the 3933 is non-resistor.

Look here for Autolite's number system:
http://cpgparts.alliedsignal.com/cpg/catalog/autolite/legal/SPNumbering.pdf

Later,

David Cole

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67Coupster
Gearhead

Posts: 189
From: Fortson, GA, USA
Registered: Oct 2001

posted 03-25-2002 07:51 PM     Click Here to See the Profile for 67Coupster   Click Here to Email 67Coupster     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Dave_C:
They should be the same, except the 3923 is a resistor plug and the 3933 is non-resistor.

Later,

David Cole


That's what I was thinking, I guess I was reading to much into the number system. Is there any problem running non-resistor plugs?

Thanks!

------------------
James
67 Coupe
393W, AFR 185, 4 Speed, 4.11 9 inch
7.09 @ 97MPH 1/8
1.55 60'

[This message has been edited by 67Coupster (edited 03-25-2002).]

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