1Jz conversion problems - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

bryanfain · 04-25-2011, 03:54 AM

I swapped a 1j from a soarer in to my s14, its a auto ecu. runs good until it hits boost, the moment it gets a positive pressure it just sputters and spits and wont hardly run. any ideas?

afields81 · 04-25-2011, 05:59 AM

check your plugs. What are they gaped to?

bryanfain · 04-25-2011, 06:03 AM

plugs are new and gapped to .8 , changed the coilpacks, map sensor, calibrated the tps.

Flicktitty · 04-25-2011, 08:40 AM

.8 gap? Usually they say the 2JZ should run a .32 gap.

[w]hite[r]abbit[x] · 04-25-2011, 09:10 AM

.8 is too big of a gap. Most NA cars normally run .44-.46. Gap them tighter and problems should go away. I like .28-.32 for turbo cars.

zurud · 04-26-2011, 04:16 AM

0.8mm is 0.32 inches dumbassess. Is your 1jz map or afm base? If yours afm base, you blew a coupler.

04-25-2011, 03:54 AM	#1
bryanfain Leaky Injector Join Date: May 2010 Location: Sumter S.C/ Tampa Fl Age: 39 Posts: 127 Trader Rating: (5) Feedback Score: 5 reviews	1Jz conversion problems I swapped a 1j from a soarer in to my s14, its a auto ecu. runs good until it hits boost, the moment it gets a positive pressure it just sputters and spits and wont hardly run. any ideas?

04-25-2011, 08:40 AM	#4
Flicktitty Post Whore! Join Date: Apr 2007 Location: Wisconsin Age: 34 Posts: 3,685 Trader Rating: (13) Feedback Score: 13 reviews	.8 gap? Usually they say the 2JZ should run a .32 gap. __________________ 2JZ-GTE Swapped S13 Coupe - 1994 Supra Turbo

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04-25-2011, 05:59 AM	#2
afields81 Leaky Injector Join Date: Oct 2009 Location: usa Posts: 149 Trader Rating: (2) Feedback Score: 2 reviews	check your plugs. What are they gaped to?

04-25-2011, 06:03 AM	#3
bryanfain Leaky Injector Join Date: May 2010 Location: Sumter S.C/ Tampa Fl Age: 39 Posts: 127 Trader Rating: (5) Feedback Score: 5 reviews	plugs are new and gapped to .8 , changed the coilpacks, map sensor, calibrated the tps.

04-25-2011, 09:10 AM	#5
[w]hite[r]abbit[x] Zilvia Junkie Join Date: Jun 2007 Location: Des Moines Age: 35 Posts: 297 Trader Rating: (0) Feedback Score: 0 reviews	.8 is too big of a gap. Most NA cars normally run .44-.46. Gap them tighter and problems should go away. I like .28-.32 for turbo cars.

04-26-2011, 04:16 AM	#6
zurud Zilvia Junkie Join Date: Aug 2009 Location: evansville, in Posts: 391 Trader Rating: (4) Feedback Score: 4 reviews	0.8mm is 0.32 inches dumbassess. Is your 1jz map or afm base? If yours afm base, you blew a coupler.