guards red 951

what spark plugs do you recomment that I use, on my e85 951 engine?

engine got Haltech E6X with wasted spark(2 dual coils), 60-2 trigger wheel, magnecor kv85 wires and E85.. it will have around 450whp.

since I will run e85, what heat range on spark plug is best? the car is for track only.

blown 944

bpr7es

blown 944

or 8's I suppose, for the extended track application

guards red 951

ok, thanks!

95ONE

def 8's. Sam at pro-technik suggested 9's or higher for enduros.
(ngk standard rating)

Rogue_Ant

For enduros, I would use the non-projector tip NGKs...
So, a BR8ES or BR9ES...


-Rogue

Rogue_Ant

Double-post.
BTW I run 8's in my 951, which is nearly a DD...


-Rogue

gregeast

Just for my edification, how are these plugs different, if at all, from what should be run on 91 octane pump gas?

Rogue_Ant

The plugs are not different from regular gasoline use plugs... in fact, one can usually get away with a little bit 'hotter' plug on E85 then gas.

For a modified 951 running ~1bar of boost, I would use the NGK BPR7ES or BR7ES. The stock plug (BPR6ES) is to hot for a modified car, IMO.


-Rogue

guards red 951

what do you mean by non-projector? whats the diffrence?

just to make some things clear; 8's and 9's ngk plugs aren't too cold with E85?

guards red 951

I will be running 1.5-1.8bar of boost, becouse of a "small" 57mm SFR Dual BB turbo, P-trim wheel.. I think 8's would be best for me... but BPR8ES or BR8ES?

Rogue_Ant

8ES are not too cold for a modified 951. I ran these plugs with both Gas and E85. The car is a little sluggish until cylinder temps warm a little. But not a big deal to me (and a lot of that is due to running E85).

Attached are pictures of a BPR7ES & BR7ES. Easy to identify the difference. The non-projector plug should help to slightly ward off knock.

-Rogue

Rogue_Ant

With that much boost, what fuel and what is the cars use?


-Rogue

blown 944

I have not had trouble using the "P" plugs and have not had trouble with 7's either. Matter of fact I even put 6's in the last go around, knowing I was planning on running less boost and b/c it is a DD and it has been cold out so.......

With that said I trust that 8's are fine as I have been in Josh's car a few times and it doesn't seem to have trouble with starts or the like.

I used to run 9's in my race car with Ethanol and found they would foul out too easily. That car was mechanical injection though so pretty rich.


So I guess really it is matter of preference. I have ran up to 35 psi with br7es so I suppose all plugs from 7's to 9's would be safe and if the 8's or 9's work fine they are safer.

My .02

gregeast

Thanks for the enlightenment