General For General 240sx/Silvia (s-chassis) discussions.

Rod Knock ?

Thread Tools
 
Search this Thread
 
Old 05-16-2005, 06:44 PM
  #1  
Registered User
Thread Starter
 
GreenPunkBlood's Avatar
 
Join Date: May 2005
Posts: 50
Rod Knock ?

I recently bought a 90 SOHC for 200 bucks. The main problem with the car is that it has rod knock. She has 175k on the motor and at about 3k rpm's you can hear it. Is there anything that i can do to help with it other than replace the berring? I intend to swap the DOHC motor in eventualy, but i dont have the $$$ to do it right now. Any help would be apreciated.
GreenPunkBlood is offline  
Old 05-17-2005, 03:16 AM
  #2  
Contributing Member
 
wikd240's Avatar
 
Join Date: Sep 2004
Location: knoxville tn
Posts: 999
baby the hell out of it... put in heavy oil... and baby the hell out of it... that is about all you can do until you get the swap...
wikd240 is offline  
Old 05-17-2005, 08:12 AM
  #3  
Registered User
iTrader: (2)
 
BigVinnie's Avatar
 
Join Date: Nov 2004
Location: Walnut Creek
Posts: 2,502
What do you want first, the good news or the extremely bad news...........
Well I guess the good news first....
Atleast you weren't ripped off......
Bad news is due to the extremely long bore and stroke of the KA you should replace the internals IMEDIATELY!!!!!!!!
Everytime you run that engine you put it at greater risk of damaging cylinder walls, or throwing the rod and piston through the engine block.
THE CURE......
Invest into TOPLINE INTERNALS kit with a bore of .020, or .040.
Since the engine is open I would also decrease the volume of the cylinder head through on e of two processes.
Ceramic coating, or head welding......
Open that engine up for performance upgrades.........
BigVinnie is offline  
Old 05-17-2005, 11:00 AM
  #4  
Registered User
Thread Starter
 
GreenPunkBlood's Avatar
 
Join Date: May 2005
Posts: 50
Currently I have very little money. How heavy a weight is to heavy? Some people have told me to run 20w-50 where as others have said that its WAY to thick for an OHC engine.
GreenPunkBlood is offline  
Old 05-17-2005, 12:52 PM
  #5  
Registered User
iTrader: (2)
 
BigVinnie's Avatar
 
Join Date: Nov 2004
Location: Walnut Creek
Posts: 2,502
10w-40......
BigVinnie is offline  
Old 05-17-2005, 02:15 PM
  #6  
Registered User
Thread Starter
 
GreenPunkBlood's Avatar
 
Join Date: May 2005
Posts: 50
Damn, thats whats in there now. I guess i need to start shoping for a new engine. Fortunitly I have another car that I can drive.
GreenPunkBlood is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
SuperHatch
Drag
16
12-17-2009 09:56 AM
brokens13
NA Motor
15
06-22-2006 10:15 AM
Pseudo
NA Motor
4
01-17-2006 01:36 PM
fast240
General
5
08-26-2004 09:41 PM



Quick Reply: Rod Knock ?



All times are GMT -7. The time now is 08:09 PM.