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chewing spark plugs.....

Tech Talk for Nissan owners.

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chewing spark plugs.....

Post by tna racing »

G day guy's and girls, have a patrol with a rb30turbo in it, running straight gas (no injection) ,9mm ice ignition leads, ice ignition coil (one of the best he does) re curved and retarded dizzy (professionally done) now every service we have to change the spark plugs, due to the fact it starts missing.

what could be causing this?

we are going to try split fire spark plugs soon (recommended) but still unsure!

cheers Adam
1993 Gq lwb with added xtra's :) sold
fj60,lifted,35s,33s for daily, 3f power!
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Post by coxy321 »

Have you been gapping the plugs before installing them?

What brand and model plug are you using?

Throw up a pic of one of the tips for us too!

Joel @ PGS would be the guru here - no doubt he can tell you what plug and gap (if applicable) to run.

:D
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Post by Auto-Craft »

Pre Detonation normally kills plugs.
Supercharged 80 SOLD - "OPERATION SANDY" now in effect.
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Post by tna racing »

Assassin_Offroad wrote:Pre Detonation normally kills plugs.
No predetination! just been fully tuned by a well known gas research tuner ;) ;)

bcp7es is what were running.... necked down to .8mm

and there not burning out thats the thing :?
1993 Gq lwb with added xtra's :) sold
fj60,lifted,35s,33s for daily, 3f power!
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Post by GUtripper »

Wrong heat range?
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Post by coxy321 »

tna racing wrote:
Assassin_Offroad wrote:Pre Detonation normally kills plugs.
No predetination! just been fully tuned by a well known gas research tuner ;) ;)

bcp7es is what were running.... necked down to .8mm

and there not burning out thats the thing :?
I'd give these a shot:
http://kalecoauto.com/index.php?main_pa ... ducts_id=5

All the other stuff i've bought from them has been awesome. I fitted some of these to my patrol last week and it fixed the miss it had:
http://kalecoauto.com/index.php?main_pa ... ucts_id=15
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Post by teamnissan »

GUtripper wrote:Wrong heat range?
trying a cooler one, hoping it works, but have tried a few

woops on dads account
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Post by bogged »

tna racing wrote:No predetination! just been fully tuned by a well known gas research tuner ;) ;)
Try someone else, see if there is a change.
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Post by Beast3805 »

Im finally getting off my ass and getting my rb30 turbo, just running factory vl turbo with straight gas through a 225 mixer and b2 converter at 6psi, we shal soon see how it goes, i belive il need to run new plugs after that :P
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Post by tna racing »

bogged wrote:
tna racing wrote:No predetination! just been fully tuned by a well known gas research tuner ;) ;)
Try someone else, see if there is a change.
good gas research tuners are hard to come buy......
1993 Gq lwb with added xtra's :) sold
fj60,lifted,35s,33s for daily, 3f power!
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Posts: 337
Joined: Wed May 21, 2008 3:47 pm
Location: Birkett Place sth geelong

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Post by Auto-Craft »

tna racing wrote:
Assassin_Offroad wrote:Pre Detonation normally kills plugs.
No predetination! just been fully tuned by a well known gas research tuner ;) ;)
So they have had a probe in the water jacket to measure with detonation sensor then ?

Detonation happens 5-7 deg before you can actually hear it.

If they were the wrong heat range, they normally crack the porcelain around the electrode as well, which can cause the misfire.

What sort of air intake temps are you seeing post intercooler ?
Supercharged 80 SOLD - "OPERATION SANDY" now in effect.
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Post by msjc38 »

Try bcpr not bcp resistor type before spending heaps on split fire plugs. R meaning resistor
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