midwestjunk

iTrader: (2)

car is a heads/cam/nitrous LS1 with 80,000 mile bottom end. sparkplugs are NGK TR6. pulled out after 4 nitrous passes and then driving it home and to one car show and back home again. obviously if i shut down the car after the spray pass and pulled the plugs they would be cleaned off. this is after street driving. car ran good tho 10.60@132 on 150 shot dry.

I've always been curious why my plugs looked like this with soot around the top. I assumed it was because my car runs a bit rich at idle and cruising around town because of my tune for the dry nitrous set up. what do you guys think?


also this new problem just started happening. look at the threads, there is oil on my spark plug threads. the heads were bran new fully assembled from texas speed and this is the first set of plugs in them. I assume the oil comes from blow by past the rings and it gets into the cylinder. i would doubt oil gets in there from bad valve seals.

BlackScreaminMachine

iTrader: (17)

I would first post this in the nitrous section, also PM JL-ws6 as he does know his nitrous and reading plugs. To be honest the ONLY way to really read a plug is to do a pass and as you turn around for the return road, immediately shut down the car so not to idle and then you would really know what those plugs where seeing at the point of the nitrous hit.

Driving or Idling back to the pits will make it nearly impossible to know what was happening. There is more too it but that is what I feel. Also H/C + 150 Dry is a very dicey setup and being on a TR6 plug, I know a few that would be very much against that.

Before you blow something up stop using the nitrous and research a little more for the kit. I am very much a fan of a stand alone cell, c16, and putting a wet plate on there. Then a spark plug appropriate for the setup.

ez money

iTrader: (1)

mine looked like that i thought it was a valve seal so i pulled the heads off had them checked and they were fine it turned out i had 4 broke rings hope ur finding turns out better

kinglt-1

iTrader: (26)

your running the wrong plug...should be running a ngk br7ef non projected tip.

supersick99z

iTrader: (66)

That's the ones I would use too

calivette805

Times 3

midwestjunk

iTrader: (2)

Its prolly my rings. i've been saving up to build a short block over winter anyway. I think i'm gonna up the shot to 175 to see what numbers I can get out of it on a stock short block. I'm running to the parts store now. I will buy NGK BR7EF's this time. what do i gap them at for 175 shot on a heads/cam ls1?

02 BLK WS6

iTrader: (11)

Wrong plugs, WAY TOO HOT.

That ground strap was glowing red hot.

Gap the BR7's @ .028

midwestjunk

iTrader: (2)

I was running my tr6's at .035 why so small of a gap on these? is there any negitive effects from running a real small gap while street driving?

A.R. Shale Targa

iTrader: (2)

Nitrous increases the cylinder pressure !!!! The gap HAS to be smaller in order
for the spark to jump without getting snuffed out....Doesn't hurt streetability

midwestjunk

iTrader: (2)

ya when i run on motor i run tr55 at .060 and on 150 shot it was tr6 at .035. i under stand that. but why go any smaller than .035. thats allready a huge differnce from stock.

BlackScreaminMachine

iTrader: (17)

Keep driving it like that and I expect to see a post why you shattered a piston and windowed the block.

midwestjunk

iTrader: (2)

it s a good possibillity. on 175 shot with 80k miles on the clock I'm pushing its limits. I should have a new motor built by spring anyway to drop in. the BR7EF plugs are waiting to go in just gotta figure out what the best gap is. i've seen .028 then some others still run .035

ZeeOSix

http://www.ngksparkplugs.com/docs/te...de_Affects.pdf

See "Nitrous Street / Strip:" section
"For every 75 shot of nitrous, drop one heat range."

More general info:
http://www.ngksparkplugs.com/docs/te...plications.pdf

midwestjunk

iTrader: (2)

Just to make sure i didnt have serious damage like a ring broken into pieces or big crack in my piston I did a compression test before i put the new plugs in. can anyone tell me if this looks normal.

#1 185
#2 180
#3 210
#4 180
#5 185
#6 185
#7 200
#8 190