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 > Engine Tech

Engine Tech Technical discussion related to all relevant engines such as KA, SR, RB, CA, 2JZ , L24/26/28, VG, VQ, and LSx series.


Reply
 
Thread Tools Display Modes
Old 01-05-2017, 05:11 PM   #1
MR_GUTTI
Zilvia Junkie
 
MR_GUTTI's Avatar
 
Join Date: Nov 2009
Location: Houston
Posts: 324
Trader Rating: (9)
MR_GUTTI is an unknown quantity at this point
Feedback Score: 9 reviews
RB neo timing ignition is driving me CRAZY!!!

Im finishing my RB25det NEO and I'm stuck trying to set up the ignition timing. First the mods.

Freddy plenum
Fmic
Stock turbo
Stock Maf
Iacv
Boost solenoid
Stock throttle body
Walbro fuel pump
Fuel regulator set to 36psi idle 42psi wot
Stock injectors
Wiring specialist harness

I already test the tps,cas, Maf, temp sensor and everything is ok. I double checked the mechanical timing and is onpoint.
So I let the engine warm up (idle around 700rpm) turn it off, I disconnect the tps, start again rpms jump to 900 at idle. With my timing light connected and moving my cas I can retard it all the way (counterclockwise) and get 25*. I can't reach the 15*.
The vacuum is almost 20 inhg at idle so I believe I don't have a leak, my fuel ratio is at 14.7
On my Nissan data scan show 5* timing. If I try to rev the engine fast it bogs and if I do it slow is ok. On my data scan I can run the base idle adjustments setting which automatically set the timing to 15* and revs perfect. After that the timing goes back to 5*.
Any help will be appreciated
Thanks!!

Timing marks:







Setup:

MR_GUTTI is offline   Reply With Quote
Sponsored Links
Old 01-05-2017, 09:42 PM   #2
Juantwo3
Zilvia FREAK!
 
Juantwo3's Avatar
 
Join Date: Sep 2011
Location: DTFullerton
Age: 33
Posts: 1,103
Trader Rating: (20)
Juantwo3 is an unknown quantity at this point
Feedback Score: 20 reviews
Is the plate on the cas on backwards?
__________________
GO DUCKS!!!!!!!!!
Juantwo3 is offline   Reply With Quote
Old 01-07-2017, 06:36 PM   #3
MR_GUTTI
Zilvia Junkie
 
MR_GUTTI's Avatar
 
Join Date: Nov 2009
Location: Houston
Posts: 324
Trader Rating: (9)
MR_GUTTI is an unknown quantity at this point
Feedback Score: 9 reviews
Quote:
Originally Posted by Juantwo3 View Post
Is the plate on the cas on backwards?
Can you please explaining further. Thanks!
MR_GUTTI is offline   Reply With Quote
Old 01-07-2017, 10:02 PM   #4
Juantwo3
Zilvia FREAK!
 
Juantwo3's Avatar
 
Join Date: Sep 2011
Location: DTFullerton
Age: 33
Posts: 1,103
Trader Rating: (20)
Juantwo3 is an unknown quantity at this point
Feedback Score: 20 reviews
If you take the cas cover off it has that disc looking thing with slots on it, it has like a half moon shape slot it can be put on backwards accidently
__________________
GO DUCKS!!!!!!!!!
Juantwo3 is offline   Reply With Quote
Old 02-08-2017, 06:16 PM   #5
MR_GUTTI
Zilvia Junkie
 
MR_GUTTI's Avatar
 
Join Date: Nov 2009
Location: Houston
Posts: 324
Trader Rating: (9)
MR_GUTTI is an unknown quantity at this point
Feedback Score: 9 reviews
Updated!!! I was able to set the cas to 15* but the Ecu keep making adjustments all the way to 5*. I'd try connecting the neutral sensor to the ecu but I was worse. I tested the knock sensors and are ok.
MR_GUTTI is offline   Reply With Quote
Old 02-08-2017, 06:19 PM   #6
MR_GUTTI
Zilvia Junkie
 
MR_GUTTI's Avatar
 
Join Date: Nov 2009
Location: Houston
Posts: 324
Trader Rating: (9)
MR_GUTTI is an unknown quantity at this point
Feedback Score: 9 reviews
Help please!!!!!!!
MR_GUTTI is offline   Reply With Quote
Old 02-11-2017, 06:05 PM   #7
240sxfriendly
 
240sxfriendly's Avatar
 
Join Date: Jan 2014
Location: ontario
Posts: 7
Trader Rating: (0)
240sxfriendly is an unknown quantity at this point
Feedback Score: 0 reviews
had a issue like this, turned out to be the knock sensor harness. worth taking a look.
240sxfriendly is offline   Reply With Quote
Old 02-12-2017, 12:18 PM   #8
Juantwo3
Zilvia FREAK!
 
Juantwo3's Avatar
 
Join Date: Sep 2011
Location: DTFullerton
Age: 33
Posts: 1,103
Trader Rating: (20)
Juantwo3 is an unknown quantity at this point
Feedback Score: 20 reviews
Did it woirk ou for you?
__________________
GO DUCKS!!!!!!!!!
Juantwo3 is offline   Reply With Quote
Old 02-15-2017, 01:12 PM   #9
MR_GUTTI
Zilvia Junkie
 
MR_GUTTI's Avatar
 
Join Date: Nov 2009
Location: Houston
Posts: 324
Trader Rating: (9)
MR_GUTTI is an unknown quantity at this point
Feedback Score: 9 reviews
I already check the cas and is property install, also I check the wiring for the knock sensor and is fine as well.
Thanks for the help guys!! Keep the ideas coming please!
MR_GUTTI is offline   Reply With Quote
Old 02-15-2017, 01:14 PM   #10
MR_GUTTI
Zilvia Junkie
 
MR_GUTTI's Avatar
 
Join Date: Nov 2009
Location: Houston
Posts: 324
Trader Rating: (9)
MR_GUTTI is an unknown quantity at this point
Feedback Score: 9 reviews
I just test the VVT solenoid and is opening and closing with 12v
MR_GUTTI is offline   Reply With Quote
Old 02-15-2017, 01:19 PM   #11
MR_GUTTI
Zilvia Junkie
 
MR_GUTTI's Avatar
 
Join Date: Nov 2009
Location: Houston
Posts: 324
Trader Rating: (9)
MR_GUTTI is an unknown quantity at this point
Feedback Score: 9 reviews
It have to be a sensor or the ecu itself that is messing me up. When I use my consult (datascan) and run the base Idle it runs perfect!!!! Can a bad iacv mess my timing?
MR_GUTTI is offline   Reply With Quote
Old 02-19-2017, 09:36 AM   #12
MR_GUTTI
Zilvia Junkie
 
MR_GUTTI's Avatar
 
Join Date: Nov 2009
Location: Houston
Posts: 324
Trader Rating: (9)
MR_GUTTI is an unknown quantity at this point
Feedback Score: 9 reviews
Does anyone has a r34 gtt ecu for sale?
MR_GUTTI is offline   Reply With Quote
Reply

Bookmarks

Tags
neo, rb25, rb25 cas, timing


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 03:37 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
vB.Sponsors
Copyright ? 1998 - 2022, Zilvia.net