Which Spark Plugs?
10-12-2011, 11:48 AM
#1
Honda-Tech Member
Thread Starter
Join Date: Nov 2008
Location: Pa, USA
Posts: 2,426
Likes: 0
Received 0 Likes
on
0 Posts
Which Spark Plugs?
So, I've searched, and really didn't find a lot.
I currently have a built turbo b16 that made 337whp last time on the dyno on low boost. I'm running NGK Bkr7e plugs gapped at 18 currently, but I was told it may be better for me to switch to 8's.
I can't find NGK Bkr8e's as everywhere says they were discontinued, so all I can find is the bkr8e's in iridium.
From searching I also found a NGK r5671a-8 which is a V Power Racing Plug.
I was just wondering if anybody else has had to switch from a 7 to an 8, and what they are running, because like I said I can't find the Bkr8e.
Thank you.
I currently have a built turbo b16 that made 337whp last time on the dyno on low boost. I'm running NGK Bkr7e plugs gapped at 18 currently, but I was told it may be better for me to switch to 8's.
I can't find NGK Bkr8e's as everywhere says they were discontinued, so all I can find is the bkr8e's in iridium.
From searching I also found a NGK r5671a-8 which is a V Power Racing Plug.
I was just wondering if anybody else has had to switch from a 7 to an 8, and what they are running, because like I said I can't find the Bkr8e.
Thank you.
10-12-2011, 12:03 PM
#4
Honda-Tech Member
Re: Which Spark Plugs?
Only 272WHP at the moment. I'll be shooting for 400whp+ pretty soon though and i'll be most likely doing the exact same thing. Try 8's, keep a eye on them and if they do start to foul out then switch back to 7's. You'll most likely be fine though.
Trending Topics
10-12-2011, 03:39 PM
#8
Re: Which Spark Plugs?
I used the 2668 BKR8 plugs and like those best. My EGTs went down with that in addition to the 3" downpipe I have. the ones that Rich7777 has are non-resistor plug which causes a bit of interference with radio and electrical systems, unless you have a grounding kit.
10-12-2011, 04:15 PM
#9
Honda-Tech Member
Join Date: Jul 2010
Location: Jax, FL
Posts: 237
Likes: 0
Received 0 Likes
on
0 Posts
Re: Which Spark Plugs?
I have been tempted to try non resistor plugs, but on hondata's web site they say not too. I find that interesting that you say its ok with a grounding kit, I suppose I could always hook a scope up to the signal for the igniter and see how much feed back there is.
10-12-2011, 07:32 PM
#10
Honda-Tech Member
Thread Starter
Join Date: Nov 2008
Location: Pa, USA
Posts: 2,426
Likes: 0
Received 0 Likes
on
0 Posts
Re: Which Spark Plugs?
hmm I just didn't want to buy $30 plugs if they didn't work well lol
10-12-2011, 08:54 PM
#13
Honda-Tech Member
iTrader: (1)
Join Date: Feb 2010
Location: latitude 39.6 longitude 78.9
Posts: 1,852
Likes: 0
Received 1 Like
on
1 Post
Re: Which Spark Plugs?
So the R5671A-8 "4554" is just a plain V power plug like the bkr7e "4644" I'm using 7's now gapped @ 25 making 311 but I'm hoping for 400 with new block. Do I even need to switch to 8's?
10-12-2011, 09:21 PM
#14
Honda-Tech Member
Join Date: Jan 2011
Location: PR
Posts: 310
Likes: 0
Received 0 Likes
on
0 Posts
Re: Which Spark Plugs?
Try to get the NGK r5672a-8. Its the same as u were talking about but ..72a-8. For some reason i had misfire passing 400whp gapped at .18 I dont know if there's really a difference but the 72a-8 dont misfire as the others at 500whp. Maybe its my imagination idk........
10-12-2011, 11:21 PM
#18
Honda-Tech Member
Join Date: Apr 2009
Posts: 116
Likes: 0
Received 0 Likes
on
0 Posts
10-13-2011, 10:16 AM
#21
Honda-Tech Member
iTrader: (11)
Join Date: Oct 2010
Location: Boise, ID
Posts: 485
Likes: 0
Received 0 Likes
on
0 Posts
Re: Which Spark Plugs?
I used the NGK 4554's in this last summer build. We built the motor with them, made 374 whp, and then went back to the dyno 2 months later and made 401 whp with the same plugs. Daily driven every day too.
10-13-2011, 12:48 PM
#23
Honda-Tech Member
Join Date: Feb 2003
Location: schooling kids in ny, usa
Posts: 9,813
Likes: 0
Received 9 Likes
on
9 Posts
Re: Which Spark Plugs?
i personally think that 400hp does not warrant an 8 range plug. ive been using the bkr7e's in my turbo cars and other cars ive tuned for many years, even back to when they were the 6097's not the 4644s.
ive never had an issue, even in my current engine at 475+ hp. the only thing ive done with them is bring the gap down as the power/boost increases. im currently running them at about .017 with completely factory ignition. i do keep up on new parts though, as the car just got a new coil and cap/rotor are replaced every year
ive never had an issue, even in my current engine at 475+ hp. the only thing ive done with them is bring the gap down as the power/boost increases. im currently running them at about .017 with completely factory ignition. i do keep up on new parts though, as the car just got a new coil and cap/rotor are replaced every year
10-13-2011, 12:53 PM
#24
Honda-Tech Member
Join Date: Jan 2007
Location: Northeast
Posts: 797
Likes: 0
Received 0 Likes
on
0 Posts
Re: Which Spark Plugs?
i personally think that 400hp does not warrant an 8 range plug. ive been using the bkr7e's in my turbo cars and other cars ive tuned for many years, even back to when they were the 6097's not the 4644s.
ive never had an issue, even in my current engine at 475+ hp. the only thing ive done with them is bring the gap down as the power/boost increases. im currently running them at about .017 with completely factory ignition. i do keep up on new parts though, as the car just got a new coil and cap/rotor are replaced every year
ive never had an issue, even in my current engine at 475+ hp. the only thing ive done with them is bring the gap down as the power/boost increases. im currently running them at about .017 with completely factory ignition. i do keep up on new parts though, as the car just got a new coil and cap/rotor are replaced every year