MelloYellow

1dirtyZ had mentioned he's going to move away from the TR6's to another plug that doesn't protrude into the chamber as much. He's considering the Champions.

I know a lot of us are in the habit of just using the NGK TR6. I've noticed the Ford Lightning camp HATES the NGK TR6 and prefers Denso plugs. How about the Grand National camp?

Anyone want to talk about different cold FI plugs?

Options:
NGK TR6
NGK BR7EF
Denso IT22 $$
Denso IT24 $$
Champion S57C
AutoLite 103
AC Delco FR1LS

How many FI'ers here have been pulling their TR6's and reading their plugs on a frequent basis?

<small>[ December 01, 2002, 05:19 PM: Message edited by: MelloYellow ]</small>

superchargedZ

I like the autolite 103. I used to run the NGK 6's, but hated them.

MelloYellow

What didn't you like about the TR6's?
1dirtyZ didn't like how far they stuck into the chamber.

SJH

I always pull plugs for reading.Probably have done it 200 times or more.
first off champion C series plugs don't fit these heads.
You need S series plugs.
I used to run s57c when I was on the bottle.
Autolite 103's are OK, but I have never had much luck with them. I like ngk tr6 better.
A champion s57c is a non projected tip, no resistor,cut back center electrode race plug.
Very cold and will foul out very quickly with normal driving.
A 55 or 53 would be totally out of the question for any street use.
A s57c is about the limit for any low speed use IMO.
Steve

ChevyNo1

I currently have TR6's in the car . . . I used to run Autolite 103's when I was nitrous, they worked awesome. 11.79@116.7 on a 75 shot with free mods, 9" rear with 4.11 gears, and pulleys. So to me they worked great. I just got another set of 103's and plan on replacing the TR6's to see if there's any difference.

- Dug

ROBS SS

iTrader: (7)

The autolight's 103 work real well in buck GN's, i have tried them in my car and they dont seem to last, on the other hand the NGK TR6's work real well, i guess you will just have to try a few of the plugs and see wich works best for you

MelloYellow

Thx everyone.

How about experience with the Denso's?

ISPEEDWS6

The only plug i like to use in super high compression, boost, or N2O application is
AC DELCO FR1LS , gapped @ 0.035
about 16 bucks a set <img border="0" alt="[Burnout]" title="" src="graemlins/burnout.gif" />

1dirtyZ

iTrader: (1)

do the delco FR1LS portrude into the chamber alot? are they colder than lets say a TR-6?

ISPEEDWS6

The FR1LS's seem to protrude about the same as stock plugs, i can measure it if need be tomorrow.
But the FR1's are very cool plugs, i definitely have to wait for my car to get some heat in the cylinders before it smooths out only takes a minuete or two.... <img border="0" alt="[Burnout]" title="" src="graemlins/burnout.gif" />

LIGHTNINROD

No flame but this statemant isn't true:

I know a lot of us are in the habit of just using the NGK TR6. I've noticed the Ford Lightning camp HATES the NGK TR6 and prefers Denso plugs

The TR6s are probably in more Lightnings than any other plug(because many do like them) except the OEMs.

Having said that, with 5 lb pulleys or higher, we need an even colder plug. I use the NGK BR7EFs

Dan

MelloYellow

Thx for the clarification.
Maybe a better Q would be, should an LS1 also run the colder NGK BR7EF plug when running 6-10psi?

What is the Lightning C/R again?
Any reason the Lightnings would want a colder plug but we wouldn't?

LIGHTNINROD

I got mine from a Lightning tuner(Power Surge Performance) but any auto parts store should be able to order them. They are less than $2.00 a piece. Yes, they are the next step colder than TR6s. Mine have been in for about 20,000 miles and when I pulled one the other day, it was still fine--color-wise(for my tune) and with very little wear. They do misfire a little at low rpms but they 'shine' at higher rpms.

If you want to spend $$, then the Denso IT22 or 24s(colder) can be had for about $90/eight.

I think our c/r is 8.4/1, and I'm pushing about 15 lbs of boost.

Dan

<small>[ December 01, 2002, 04:18 PM: Message edited by: LIGHTNINROD ]</small>

1dirtyZ

iTrader: (1)

how much were the BR7EF's and where to find them?? are they colder than the TR6's?