Spark plugs and gaps.....lets hear it...

Sparkz28
07-01-2003, 02:11 PM
What spark plugs do you run...and what do you gap them at so the spark does not get blown out..

and what kind of boost are you running.....

I run NGK Tr-6's gaped at .32 ........ however I do still have three that are gaped at .40 ..#3 ,#5 and #7.they are a bitch to get to....and I think thats were my high rpm missing problem is coming from.....:D

Sparkz28
07-02-2003, 01:35 AM
I KNOW im not the only one with plugs..... come on guys......spill it!:D

LT4ultraZ
07-02-2003, 02:25 AM
Ok I was running 104's gapet at 37 with 14LB of boost and a MSD6A But i added a 50 shot of nitrous and whent to 103's gaped at 35 with 14LB of boost. The rest is in the down below.E-mail if you have any questions. troy:D

94 NO TOP Z
07-02-2003, 10:11 AM
TR-6's gapped at 0.035"

Sparkz28
07-02-2003, 01:56 PM
Originally posted by 94 NO TOP Z
TR-6's gapped at 0.035"


hows that working out for you......???

96 WS6
07-03-2003, 01:37 PM
autolite 104's gapped @ 0.032

rskrause
07-03-2003, 02:52 PM
Originally posted by 96 WS6
autolite 104's gapped @ 0.032

NGK BPR11ES gaped to 0.035" (for AFR heads).

15PSI + a small nitrous shot.

Rich Krause

Sparkz28
07-03-2003, 03:27 PM
So how come you went with NGK BPR11ES ........ whats the difference between that plug and the NGK R tr-6?

rskrause
07-03-2003, 04:42 PM
Originally posted by Sparkz28
So how come you went with NGK BPR11ES ........ whats the difference between that plug and the NGK R tr-6?

It's the wrong size for an LTx casting, I am using AFR's. But the rationale for the plug is that it is very cold - 5 heat ranges colder than the TR-6. Interstingly, I have had no problems with fouling.

Rich Krause

bowtiepwr
07-03-2003, 07:04 PM
Originally posted by rskrause
It's the wrong size for an LTx casting, I am using AFR's. But the rationale for the plug is that it is very cold - 5 heat ranges colder than the TR-6. Interstingly, I have had no problems with fouling.

Rich Krause
>Is your car used everyday as a "daily driver " ?
I must guess (don't like to assume ;) ) that you are also using one of the ignition boxes too ? MSD , Crane , etc.

rskrause
07-03-2003, 09:35 PM
Originally posted by bowtiepwr
>Is your car used everyday as a "daily driver " ?
I must guess (don't like to assume ;) ) that you are also using one of the ignition boxes too ? MSD , Crane , etc.

I put about 4,000 miles on it last year including stop and go traffic. I was using a Crane box and it crapped out this year, so I am now using an MSD. BTW: I use OEM plug wires! Cheap, they fit right, and I can't say the car is suffering performance wise.

Rich Krause

SMOKNZ
07-03-2003, 10:21 PM
I run Autolite 103's gapped at .035. I run these on AFR heads too.

Rich,

What do you mean your plugs are for AFR heads? I didn't know there was a difference in the plugs from the LTx castings and AFR's. Can you elaborate on this?

Bill

rskrause
07-04-2003, 08:40 PM
Originally posted by SMOKNZ
I run Autolite 103's gapped at .035. I run these on AFR heads too.

Rich,

What do you mean your plugs are for AFR heads? I didn't know there was a difference in the plugs from the LTx castings and AFR's. Can you elaborate on this?

Bill

The "reach" (length) of the plug is different. The LTx castings usually use a 14mm reach. The AFR heads with large chambers (as I use) use a 3/4" (19mm) reach.

Rich Krause

mehoffz24
07-06-2003, 07:23 PM
i was reading a while back where people were having problems while running the MSD6AL and the plugs gapped at .032-.035, they were stating that the optis were burning up, or just going bad. have you guys had any of these problems. what do you think about the accell box, good and bad.... thanks

Brandy
07-06-2003, 07:55 PM
I was using Champion RS12YCs but with the new motor I'm going to RS9s. I ran as much as 21psi before the engine let go but it was fine and dandy with 14psi.

Bryan 94 Z28
07-06-2003, 08:50 PM
I run AC Delco R43TS's gapped at .032, they seem to be doing OK at 12 psi.

k9ulan
07-07-2003, 12:55 AM
anyone running bosch +4's..?

brand-x
07-07-2003, 02:24 AM
Originally posted by rskrause
NGK BPR11ES gaped to 0.035" (for AFR heads).

15PSI + a small nitrous shot.

Rich Krause

Hey Rich,
I've got the AFR 220s also and I have been struggling with a set of plugs (the header is extremely close to the #7 plug). I thought about the Accel-0437S shorty plug but they only come in the standard heat range. Is this a problem you've had experience with or a problem you've given much thought to?
Thanks,
CT