Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Go Back   Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum > General > Tech Talk

Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars


Reply
 
Thread Tools Display Modes
Old 03-05-2019, 07:37 PM   #1
koukidiego
 
Join Date: May 2018
Location: CALIFORNIA
Age: 34
Posts: 7
Trader Rating: (0)
koukidiego is an unknown quantity at this point
Feedback Score: 0 reviews
s14 Spark Plug Question

I have an S14 with an S14 SR that I just swapped. I will be running E85 and pushing slightly higher boost with a GT2860RS, .86. I have a lot of ngk copper spark plugs that I want to use up. Just want to know what is the recommended gap? Also, should I eventually go with a colder plug? This car will only be driven to and from the track. It is not my daily driver by any means, I don't mind swapping the plugs with every oil change. Thanks in advance.
koukidiego is offline   Reply With Quote
Sponsored Links
Old 03-07-2019, 05:58 AM   #2
jr_ss
Post Whore!
 
Join Date: Dec 2005
Location: Pa
Posts: 6,052
Trader Rating: (34)
jr_ss is just really nicejr_ss is just really nicejr_ss is just really nicejr_ss is just really nicejr_ss is just really nicejr_ss is just really nicejr_ss is just really nicejr_ss is just really nicejr_ss is just really nicejr_ss is just really nice
Feedback Score: 34 reviews
Send a message via AIM to jr_ss
You should stick with a 7heat range for your setup. E85 adds a cooling effect, so there is no need for colder plugs. Gapping the plugs is going to be trial and error. I have mine gapped at .026 but I’m also on a much larger turbo and entirely different setup than you. My ignition system probably varies too which is a consideration that needs to be taken into account. I’d start at .030 and see how it runs. Still on stock ignition system? Copper plugs are dirty and foul pretty quickly. Once you burn through them, buy some quality iridium plugs and call it good.
__________________
My SR20VET
jr_ss is offline   Reply With Quote
Old 03-07-2019, 09:58 PM   #3
ultimateirving
Zilvia FREAK!
 
ultimateirving's Avatar
 
Join Date: Nov 2010
Location: arizona
Age: 33
Posts: 1,519
Trader Rating: (1)
ultimateirving is an unknown quantity at this point
Feedback Score: 1 reviews
Jr said everything in one post! Stock coils work ok with copper but once you upgrade the coil packs switch to the iridium for sure.
__________________
Z32 with lq4 swap
Desert Street Scene || Dssevents.com
ultimateirving is offline   Reply With Quote
Old 03-10-2019, 05:34 PM   #4
Kingtal0n
Post Whore!
 
Kingtal0n's Avatar
 
Join Date: Jul 2005
Location: South Florida
Age: 38
Posts: 4,649
Trader Rating: (17)
Kingtal0n has a reputation beyond reputeKingtal0n has a reputation beyond reputeKingtal0n has a reputation beyond reputeKingtal0n has a reputation beyond reputeKingtal0n has a reputation beyond reputeKingtal0n has a reputation beyond reputeKingtal0n has a reputation beyond reputeKingtal0n has a reputation beyond reputeKingtal0n has a reputation beyond reputeKingtal0n has a reputation beyond reputeKingtal0n has a reputation beyond repute
Feedback Score: 17 reviews
Send a message via AIM to Kingtal0n
The larger than gap you can get away with

typically gives better performance and economy

I always start 'big' (.035" to .060" for some coil systems/applications)

And wait for it to tell me gap down (blows out)

Iridium is an incredible long lasting plug when the engine is tuned. I too suggest tuning with coppers then swap to iridium when all setup.
Kingtal0n is offline   Reply With Quote
Old 05-03-2019, 07:14 PM   #5
koukidiego
 
Join Date: May 2018
Location: CALIFORNIA
Age: 34
Posts: 7
Trader Rating: (0)
koukidiego is an unknown quantity at this point
Feedback Score: 0 reviews
Thank you all for all your input. I wish I could devote more time to my car and Zilvia, but work has been insane as of lately. I will be tuning this month. I will let you all know how it goes.
koukidiego is offline   Reply With Quote
Reply

Bookmarks


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 03:57 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
vB.Sponsors
Copyright © 1998 - 2019, Zilvia.net™