turbo spark pulug and gap
#63
So what if you wanted to run Autolite plugs?
I plan on running about 24#'s of boost (max, and normally probably around 18-20#'s). I also plan on running 93 octane plus meth injection on a 8.8:1 CR.
I cross referenced and it looks like;
Autolite Spark plug
NGK 5671A-8 is Autolite 2614
NGK 5671A-9 is Autolite 2612
Which would be better for my application to start and would .22 gap be appropriate?
I plan on running about 24#'s of boost (max, and normally probably around 18-20#'s). I also plan on running 93 octane plus meth injection on a 8.8:1 CR.
I cross referenced and it looks like;
Autolite Spark plug
NGK 5671A-8 is Autolite 2614
NGK 5671A-9 is Autolite 2612
Which would be better for my application to start and would .22 gap be appropriate?
#66
#69
8 Second Club
iTrader: (4)
Side gapped recessed plug VS a standard protruding plug (and no those aren't my mangled fingers )
Autolite AR474 "racing plugs" are what I would run for most 20+psi LS motors. If I didn't need a resisted plug I'd be running them. Best performance plug for the money IMO. They are an "8" heat range on the NGK scale. Also have a "special" electrode material. My local parts stores could order these cheaper than summit/jegs.
http://www.summitracing.com/parts/frm-ar474
Last edited by Forcefed86; 11-02-2014 at 05:04 PM.
#70
8 Second Club
iTrader: (4)
These plugs seem to be a gasketed, resisted, 8 heat range from NGK. Anyone see a reason these wouldn't work for us guys needed a resisted plug?
http://www.ebay.com/itm/6x-NGK-Coppe...-/231063736637
Rock auto has them under $3.
https://www.rockauto.com/dbphp/x,cat...,NGK_5430.html
http://www.ebay.com/itm/6x-NGK-Coppe...-/231063736637
Rock auto has them under $3.
https://www.rockauto.com/dbphp/x,cat...,NGK_5430.html
#73
TECH Resident
iTrader: (26)
These plugs seem to be a gasketed, resisted, 8 heat range from NGK. Anyone see a reason these wouldn't work for us guys needed a resisted plug?
http://www.ebay.com/itm/6x-NGK-Coppe...-/231063736637
Rock auto has them under $3.
https://www.rockauto.com/dbphp/x,cat...,NGK_5430.html
http://www.ebay.com/itm/6x-NGK-Coppe...-/231063736637
Rock auto has them under $3.
https://www.rockauto.com/dbphp/x,cat...,NGK_5430.html
#74
Pretty common practice in the race world if you do a google search. All the autolite racing plugs have a cutback ground strap and are "side gapped". This basically just gives you a shorter ground strap so it will act like less of a glow plug in extreme heat.
Side gapped recessed plug VS a standard protruding plug (and no those aren't my mangled fingers )
Autolite AR474 "racing plugs" are what I would run for most 20+psi LS motors. If I didn't need a resisted plug I'd be running them. Best performance plug for the money IMO. They are an "8" heat range on the NGK scale. Also have a "special" electrode material. My local parts stores could order these cheaper than summit/jegs.
http://www.summitracing.com/parts/frm-ar474
Side gapped recessed plug VS a standard protruding plug (and no those aren't my mangled fingers )
Autolite AR474 "racing plugs" are what I would run for most 20+psi LS motors. If I didn't need a resisted plug I'd be running them. Best performance plug for the money IMO. They are an "8" heat range on the NGK scale. Also have a "special" electrode material. My local parts stores could order these cheaper than summit/jegs.
http://www.summitracing.com/parts/frm-ar474
I just need to find a good plug for my application. I was hoping Martin from Tuck would have chimed back in with me by now.
#75
FormerVendor
iTrader: (3)
Speed Junkee, if you saw the LT1 we built that makes 900rwhp with TEA/TFS LT4 heads we run a 8 heat range plug in that motor.
If you are shooting for 1000rwhp with 8.8:1 compression a 8 heat range plug should also work for your usage. That said, you may find that if you read a fresh set of plugs that were shut off at the end of a run/pull that you could end up needing a 9 heat range plug.
If you are shooting for 1000rwhp with 8.8:1 compression a 8 heat range plug should also work for your usage. That said, you may find that if you read a fresh set of plugs that were shut off at the end of a run/pull that you could end up needing a 9 heat range plug.
#76
Speed Junkee, if you saw the LT1 we built that makes 900rwhp with TEA/TFS LT4 heads we run a 8 heat range plug in that motor.
If you are shooting for 1000rwhp with 8.8:1 compression a 8 heat range plug should also work for your usage. That said, you may find that if you read a fresh set of plugs that were shut off at the end of a run/pull that you could end up needing a 9 heat range plug.
If you are shooting for 1000rwhp with 8.8:1 compression a 8 heat range plug should also work for your usage. That said, you may find that if you read a fresh set of plugs that were shut off at the end of a run/pull that you could end up needing a 9 heat range plug.
#77
FormerVendor
iTrader: (3)
Here is a great thread/sticky that shows a reference chart between the different manufacturers and their respective plug selections.
https://ls1tech.com/forums/nitrous-o...o-read-me.html
https://ls1tech.com/forums/nitrous-o...o-read-me.html
#78
Here is a great thread/sticky that shows a reference chart between the different manufacturers and their respective plug selections.
https://ls1tech.com/forums/nitrous-o...o-read-me.html
https://ls1tech.com/forums/nitrous-o...o-read-me.html
Autolite Spark plug
NGK 5671A-8 is Autolite 2614
NGK 5671A-9 is Autolite 2612
I just wanted to verify this with you and get a confirmation that I should indeed try the Autolite 2624 first, and then try the 2612 as you mentioned for appropriate heat range.