Crap, I wish I was having as much luck with the b10eg and b10egv's as everyone else is. I have tried both for the lat few months and my throttle response became sloppy after about 500 miles. I finally installed the ngk race plugs mentioned above(they were on a shelf in my garage for 8 years...I was saving them for a special day...?). The race plugs provided much crisper throttle response. It was clearly noticeable. The car also feels better at WOT. I don't know what to make of it because YMMV but it pays to try all of them and then pick the ones you like. Maybe e85 likes either plug...who the hell knows. I'm just confused.
John

 

I switched from the B10EGV to the NGK race plugs 11.5 a couple of weeks ago. The 11.5's ran great at 28psi but only lasted for two weeks. Once the water injection came on the plugs were toast. Anyway going back to the B10EGV, never really had a problem with them and last they lasted a few months.

 

Which ngk race plugs? They have a couple models and one model doesn't seem to be any better then the egv's. The other model which is the same as the greddy plugs i run is much better. :Otherwise maybe your plus are too cold at 11.5. 10's seem to be about right for most people.

 

Has anyone here tried the BR8EIX, BR9EIX and BR10EIX? I have had great results with them...they are cheap($6.99 ea at Oreilly's)...they are iridium...and they are mean to ignite fuel saturated/oily mixtures because they are mean for high powered 2 stroke engines. I use the 8 leading and 9 trailing...and so far so good(I have E85...hence the slightly warmer plugs...easier starting). The reach is perfect and they are "gap-able"...only catch is that they are 13/16"hex which requires a modded socket...but you guys know all about that I am sure.

My friend in PR has over 600whp on his daily with these plugs and has been using them for a while.

Chris

 

Chris, are those resistor plugs?

 

those are non- resistor

 

sparkplugs.com have them listed down as resistor plugs so I'm confused, I thought these were non-resistor plugs

 

They are resistor plugs. Thats what the r stands for. The egv's are non resistor.

 

thanks for clearing that up, now if I can just get KG's crappy thin wall socket to work, I don't think he test fitted this thing before he sent it out because it doesn't fit, I think I still have to grind away more metal

 

Yes I believe they are...


oops..late post...haha

 

The plugs were R6725-115.

Can anyone advise whether I can run 26psi on C16 and water AI with 9's all around. Stock ports, T78 turbo. I have run with 10's all around but the 9's seem more responsive at below 12psi...never took it higher than that with the 9's but thinking of trying them at the track at 26psi. My thoughts are that the water AI should help enough to cool things down that the 9's should be okay.

 

I ordered a set of b10egv's today, I'll hopefully have them in and tune the car on them this weekend. What's the deal with the resistor plugs again? I have a set of BR10EIX plugs in my shop but from what I remember "I shouldn't run them." Discuss...

 

+1

I want to know too...I have been using BR9EIX for a while...what are the benefits of non-resistor plugs.

Chris

 

The non resister plugs can cause interference in certain environments. But the problem most are concerned with is the twin power boxes burning up. Probably from trying to produce more power then that are designed for. A non resister plug has less resistance and therfore could make for a hotter spark. The concern with the eix's is some part of it breaking off into the engine. The eix's are resistor plugs. Egv's non resistor. Look for an r in the product number for resistor plugs.

 

I would not run 9s at that horse power level, water or not.

 

I wouldn't either. My 9's burned up in short order even with water. If u aren't running an ignition amp you should look into running one. Also i don't think the ngk 6725 are near the same quality as the 7420's. In fact i would say the egv's or eix's are probably about the same in terms of performance and life and much lower in price. Time will tell how well the greddy (7420's) hold up. So far so good.

 

oh I see...so lower numbers can burn up earlier huh? I am using 8 for leading and 9 for trailing but with E85...the hotter plug helps igniting the Ethanol. I haven't had them burn up too fast probably because ethanol burns cooler. I guess I should consider going with 9-10 instead. hmmm...what do you think?

Maybe I should go for a non-resistor plug if it will increase the spark output....

????

Chris

 

So I have a few questions then....

I want to give the B#EGV's a try. I am interested in seeing how much better the non-resistor plugs burn the fuel. I run E-85 and I am using some LS-2 MSD coils for each leading and a OEM LS-2 coil for each trailing. I don't have an amp....but the msd coils are massive and their spark is at least on par with an amp wihtout the MSD coils so I am not worried about it. My compression is 10:1...I will be running up to 21psi of boost but will mostly stay between 15-20psi (this equates to 475-520whp on my set up)

Being that my EGT's are so much lower than with gas and E85 takes much more to burn....should I go with 9's or 10's??

Also, do I need to shim the spark plugs to fit or should they drop right in?

what do you recommend I gap them to?

Thanks.

Chris

 

Hotter plugs don't mean hotter spark. It just means they retain more heat to burn off contaminates and resist fouling. You should pick a plug that works best with your engine.and driving habbits. If your plug is too cold it will foul easier, especially if you sit still and drive like grandma alot. Too hot and you risk detonation and plug life can be reduced. I'm not familiar with running e85 so i can't comment on which plug is best. But you could always try 9's all around, it doesn't have to be colder in the trailing hole. You should look at the plugs to get an idea of what you need. If you have the ignition system for it, colder plugs will run fine without fouling. The greddy race plugs run the best so far for me. They are better then the non resistor egv's even though the greddy plugs are resistor type. Both plugs ran better then stock, and i never tried the eix's.

 

Ok, I will try and use B9egv's all around just to test them out. Thanks for the help...

I always liked using a hotter leading because if it detonates due to spark plug heat retention it will do it on the leading which is way better than detonating with the trailing...

I'll get some today...they seem cheap enough

Chris

 

I was just told but a rotary guy that non-resistor spark plugs are no good. Is this true? Now I am on the fence again...I don't want to damage anything due to using them...

Any insight?

Chris

 

I never had any problems running them even with a twin power which is not supposed to be used with them. You don't have a twin power so i wouldn't worry about using them. Many people have used them just fine. Just try them nothing bad is going to happen. If you want the best possible plug then go with the greddy race plug, but figure out your heat range first.

 

I ordered a set of b10egv's at the local Oreilly Auto during lunch...they said they would be there by 5pm....we'll see what all the fuss is about ...

Is there anything I should change in my dwell settings and such? I am already at a dwell of 5.00ms...sounds like a lot...but the LS2 coils are run up to 6 by the factory GM computer...and they can handle up to 8.0 where an internal protection circuit caps it off at...they are pretty hard to burn out.

Chris

 

i think im going to try the greddy race plugs before i go with the NGK 11.5

i hope to have a good review for you guys

 

What plug gaps do you guys run on B10EGVs?

I just swapped to them from the NGK BUR7EQ and NGK BUR9EQ that was in there until now, as I was about to turn up the boost to more manly levels and hit the track, but after 2min idling checking for leaks and stuff, it stalled after I blipped the throttle, and think its flooded as it wont start now.

Pulled the plugs and they look like new, unsurprising considering about 2min runtime, but I think I gapped em too tight maybe...