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 05-05-2014, 06:59 AM   #1
glacier985
Leaky Injector
 
Join Date: May 2005
Location: Central Ohio
Age: 32
Posts: 50
Trader Rating: (3)
glacier985 is an unknown quantity at this point
Feedback Score: 3 reviews
KA Help! Identify this sound

Seriously looking for help here, I've had this SOHC ka-t done for what seems like forever (5 years), but have yet to tune and drive it on the street due to other factors (mainly two kids). Anyway I am determined to get it running and finished this year since its about time I get it done.

I'm looking for some help identifying a noise, to me it sounds like rod knock, but it doesn't have the rhythmic increase the defines rod bearings. Could it be a crank bearing? Just looking for help, don't want to roll into the tuner with some bad bearings. Also please note, this un-tuned other then adjustment for larger injectors and MAF.

I'm prepared to pull the motor and replace the bearings/other parts, I just want to drive this car.

Here's a video link, https://www.youtube.com/watch?v=5g--S5d8rog
__________________
72 240z, l28, Its a classic
90 240sx, ka24et Get this finished
glacier985 is offline   Reply With Quote
Sponsored Links
Old 05-05-2014, 08:08 AM   #2
cotbu
Post Whore!
 
cotbu's Avatar
 
Join Date: Sep 2005
Location: DE
Posts: 3,312
Trader Rating: (3)
cotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nice
Feedback Score: 3 reviews
From the exhaust it does sound like rod knock, a lil, but it also sound like timing. Go to the front of the engine and listen with a screw driver etc. to your ear. for us, the camera, rev the engine to 3krpm keep it steady also remove the oil cap, it lets the sound out.

you can try the slack test, by rotating the engine past tdc for each cylinder and push down on the piston. listen for a clack and feel for any movement.
__________________

LoverTechnologies "Half Broken Things!"
cotbu 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 09:07 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
vB.Sponsors
Copyright © 1998 - 2015, Zilvia.net™