Jump to content
SAU Community

Recommended Posts

  • Replies 41
  • Created
  • Last Reply

Top Posters In This Topic

hey Steve, on my 34 the car misses on idle when the gap is 0.8 with the copper plugs .. 1.0 gap and no worries.

Hamish, I actually WANT to use a 1.1 gap for better combustion/power/fuel eco .. :P One of the reasons I got the splitfires.

most people gap to 0.8 with splitfires anyway....

TBH it might work @ 1.1 but with that plenum in the way i aint gonna bother to find out :P

heat range 7 seems to be the go too for 200+rwkw stenve... although 6 is quite popular and works on many a gtt/gtst

did it miss instantly? or could you have fouled them?

I've had heat range 6 and 7 in my 190rwkw R34 .. 7's give a slightly better fuel eco I think but apart from that they're both about the same. Unigroup were encouraging me to stick with 7s at this power level and I think they know what they are talking about. I'd give the 6s a miss unless your skyline is completely stock.

Johnny which ones are you talking about, the BCPR7ES-11's ?

found the BCPR7ES-11's at local repco just down the road .. woops, shoulda checked there first :whistling: $31 for 6, all goodah

Told you so :D

They're quite easy to get a hand on!

From memory it appeared to miss instantly (well about 30seconds or so after i started it), but i cant be sure. car isn't tuned yet so its possible i fouled them. (could be a loose loom connection, badly seated coilpack etc, bit of dirt or something as well)

I thought about gapping them back up to 1.0mm, but its odd that it didn't miss with the 7 heat range plugs at a 0.7mm gap :S i was under the impression the smaller the gap the worse the idle?

just called the local repco and ordered in the BCPR7ES-11's for me.

so tomorrow i'll throw them in at a 0.8mm gap i guess? what do you guys reckon? (running splitfires)

dont really feel like taking them in and out if it doesn't work haha. is it better to run them at 1.1mm gap if i can?

tony (munkyboy) runs the 7's at 1.1mm (i think) and he hasn't had an issue, but he has only just gotten some yellow jacket coils or whatever they are called

yeah 1.1mm with new coilpacks. but thats only at 13psi. i think i'll be going to 0.9mm for 16-18psi, and hope it holds up on the dyno.

looks like ive joined the 1.1mm club

just finished up and took it for a spin.

put it the bcpr7es-11's checked all the gaps, they were at 1.1mm then didn't touch them

took out the bcpr6es put in new plugs carefully hooked everything up and tada!

no more miss at idle, car seems to pull a lot easier, seemed a bit more powerful (probs just cause i was breaking traction on the wet roads all the time haha)

im running 12psi max. usually peaks about 11.5psi and no sign of a miss anywhere.

so there ya go if you are running splitfires at max 12psi, in "theory" you should be able to run 1.1mm gaps

how'd you go wacky dee?

just waiting for my splitfires to arrive and a date with unigroup ... I'm gonna do the same as you (same boost as well..11.5psi sometimes 12max depending on weather I guess) Good to hear you're not having any issues.

What did you use to check the gap on the new plugs? I checked with repco and they had those feelers but max .8mm or so (5 different kinds all maxed out at under 1mm)

lol. you add the different thicknesses together to make the amount you want. ie. 0.8 with a 0.3 or as close as you can. put them together, and check the gap.

yeah, what he said.

Dont worry i looked at it for a minute and went "wtf?"

Has anyone had issues with 7's fouling for normal street use?

I run BKR6E at 1.1mm on street (95%) and 7's at .9mm when it gets the boot in - 250rwkw+. I have remote mounted coils so swapping out plugs is a 5 minute job.

Is the OEM plug the same height as the BCP or the BKR? Maybe the BCP are actually too tall and put stress on the coils?

well im having the same issue as Stenve.....put in bcpr6es gapped to .8mm and now it misses.....at the start it would only miss when it warmed up...but now it misses from the time i start the car....

i have a little over 200kw s2 r33....have jjr coils....should i be running bigger or smaller gap??? and should I be using the 7???

thanks!!

6s will do the job ..but 7s are probably better for > 200rwkw and put the gap back up to .9 or 1mm and you should be ok. If that doesn't fix it, one or more of your jjr coils are dodgy.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Here is the mess that I made. That filler there was successful in filling dents in that area. But in the middle area. I can feel dents. And I've gone ocer it multiple times with filler. And the filler is no longer there because i accidently sanded it away. I've chased my tail on this job but this is something else lol. So I'm gonna attempt filler one more time and if it doesn't work I'll just high fill primer the door and see where the issues are because guidecoat is of no use atm.
    • Ok, so I think I sort of figured out where I went wrong. So I definitely overthinked it, and I over sanded, which is probably a large part of the problem. to fix it, I ended up tapping some spots that were likely to be high, made them low, filled them in, and I tackled small sections at a time, and it feels a lot better.    I think what confused me as well is you have the bare metal, and some spots darker and some are lighter, and when I run my finger across it, it' would feel like it's a low spot, but I think it's just a transition in different texture from metal to body filler.    When your finger's sliding on the body filler, and crosses over to the bare metal, going back and forth, it feels like it's a low spot. So I kept putting filler there and sanding, but I think it was just a transition in texture, nothing to do with the low or high spot. But the panel's feels a lot better, and I'm just going to end up priming it, and then I'll block it after with guide coat.   Ended up wasting just about all of my filler on this damn door lol  
    • -10 is plenty for running to an oil cooler. When you look at oil feeds, like power steering feeds, they're much smaller, and then just a larger hose size to move volume in less pressure. No need for -12. Even on the race cars, like Duncans, and endurance cars, most of them are all running -10 and everything works perfectly fine, temps are under control, and there's no restrictions.
    • Update: O2 sensor in my downpipe turned out to be faulty when I plugged in to the Haltech software. Was getting a "open circuit" warning. Tons of carbon buildup on it, probably from when I was running rich for a while before getting it corrected. Replaced with new unit and test drove again. The shuffle still happens, albeit far less now. I am not able to replicate it as reliably and it no longer happens at the same RPM levels as before. The only time I was able to hear it was in 5th going uphill and another time in 5th where there was no noticeable incline but applying more throttle first sped it up and then cleared it. Then once in 4th when I slightly lifted the throttle going over a bump but cleared right after. My understanding is that with the O2 sensor out, the ECU relies entirely on the MAP tune and isn't able to make its small adjustments based on the sensors reading. All in all, a big improvement, though not the silver bullet. Will try validating the actuators are set up correctly, and potentially setting up shop time to tune the boost controller on closed loop rather than the open loop it is set to now. Think if it's set up on closed loop to take the O2 reading, that should deal with these last bits. Will try to update again as I go. 
    • More so GReddy oil relocation kits, sandwich plates, etc. all use 10AN fittings. And same, I've only used 10AN and my car sees track work (circuit, doing laps, not 10 sec squirt business).
×
×
  • Create New...