LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

95 z28 camaro rebuilt lt1 noise issues

Thread Tools
 
Search this Thread
 
Old May 2, 2018 | 02:17 PM
  #16  
DrewHMS97SS's Avatar
Registered User
 
Joined: Sep 2003
Posts: 1,917
From: Las Vegas
Re: 95 z28 camaro rebuilt lt1 noise issues

A mechanics stethoscope could also help narrow down the noise as well. You can also run it with the covers off.
Old May 2, 2018 | 03:33 PM
  #17  
Humblelt1's Avatar
Thread Starter
Registered User
 
Joined: Apr 2018
Posts: 17
Re: 95 z28 camaro rebuilt lt1 noise issues

I have ran it without covers. It does have 6” rods I don’t know if that means anything with clearance issues. I’ll remove valve covers again to see.

Last edited by Humblelt1; May 2, 2018 at 03:43 PM.
Old May 2, 2018 | 04:12 PM
  #18  
DrewHMS97SS's Avatar
Registered User
 
Joined: Sep 2003
Posts: 1,917
From: Las Vegas
Re: 95 z28 camaro rebuilt lt1 noise issues

The rod length does change some of the geometry in the block. There would have been a need to clearance the block and possibly the oil pan, in addition I have heard there can be clearance issues with the cam shaft. While not out of the realm of possibility, I would think if one of the rods were hitting things, that you would have been in a world of hurt after running the engine for less than a couple of minutes.
Old May 2, 2018 | 05:15 PM
  #19  
Humblelt1's Avatar
Thread Starter
Registered User
 
Joined: Apr 2018
Posts: 17
Re: 95 z28 camaro rebuilt lt1 noise issues

Yea that’s why I’m going to pull the oil pan this weekend I might try readjusting the valve lash again today.
Old May 2, 2018 | 07:43 PM
  #20  
Humblelt1's Avatar
Thread Starter
Registered User
 
Joined: Apr 2018
Posts: 17
Re: 95 z28 camaro rebuilt lt1 noise issues


Last edited by Humblelt1; May 2, 2018 at 08:53 PM.
Old May 2, 2018 | 10:58 PM
  #21  
Chimera96's Avatar
Registered User
 
Joined: Jun 2003
Posts: 1,114
Re: 95 z28 camaro rebuilt lt1 noise issues

Originally Posted by Humblelt1
[left]i got a rebuilt lt1 in a 95 z28 cc503, scorpion rockers 1.5 rebuilt bottom end. but it makes noise and i can't figure out what it is.
is this now a 383?

Originally Posted by Humblelt1
I have ran it without covers. It does have 6” rods I don’t know if that means anything with clearance issues.
6" rod is used in a 383 requiring block, rod......and windage tray clearance

If motor makes this kind of noise with valve covers off and RR are not flying around...you need to drop pan, rotate motor over by hand and look for contact
Old May 2, 2018 | 11:13 PM
  #22  
Humblelt1's Avatar
Thread Starter
Registered User
 
Joined: Apr 2018
Posts: 17
Re: 95 z28 camaro rebuilt lt1 noise issues

355 with 6 inch rods. I will be pull oil pan Saturday morning. I’ll update everyone then.
Old May 3, 2018 | 10:21 AM
  #23  
Chimera96's Avatar
Registered User
 
Joined: Jun 2003
Posts: 1,114
Re: 95 z28 camaro rebuilt lt1 noise issues

on a stock crank motor (355). IDK if a 6" rod is a problem. on the longer stroke 383 crank it is as block clearance is required

Have someone turn the motor over by hand while you listen from underneath to hear if there is contact noise. Would be easier to turn over engine if plugs were pulled
Old May 3, 2018 | 04:42 PM
  #24  
Humblelt1's Avatar
Thread Starter
Registered User
 
Joined: Apr 2018
Posts: 17
Re: 95 z28 camaro rebuilt lt1 noise issues

Yea I’ll post of my findings on saturday
Old May 5, 2018 | 02:23 PM
  #25  
Humblelt1's Avatar
Thread Starter
Registered User
 
Joined: Apr 2018
Posts: 17
Re: 95 z28 camaro rebuilt lt1 noise issues




Hey guys I was getting ready to lift up the motor when I saw the ring around the flywheel that the starter uses to start shift I don’t know if that could be a problem? And it’s raining so can’t do anymore today.
Old May 5, 2018 | 02:26 PM
  #26  
Humblelt1's Avatar
Thread Starter
Registered User
 
Joined: Apr 2018
Posts: 17
Re: 95 z28 camaro rebuilt lt1 noise issues


Also the show of movement shows in all 4 openings on the flywheel in equal length about 1/4 to 1/2 inch and by shift I could NOT get it to move personaly

Last edited by Humblelt1; May 5, 2018 at 02:34 PM.
Old May 10, 2018 | 12:30 PM
  #27  
Thake618's Avatar
Registered User
 
Joined: May 2018
Posts: 24
Re: 95 z28 camaro rebuilt lt1 noise issues

curious to see if you figured anything out?
Old May 11, 2018 | 06:42 PM
  #28  
Humblelt1's Avatar
Thread Starter
Registered User
 
Joined: Apr 2018
Posts: 17
Re: 95 z28 camaro rebuilt lt1 noise issues

Not yet I’m out of town but I will post findings
Old May 13, 2018 | 08:21 AM
  #29  
Humblelt1's Avatar
Thread Starter
Registered User
 
Joined: Apr 2018
Posts: 17
Re: 95 z28 camaro rebuilt lt1 noise issues

Btw it’s not stock crank and I’m running arp rod bolts. I’m not sure what crank was put into the motor but I’m sure it’s good info to have so I’m gonna try to get ahold of the engine builder. Just been so long I don’t know if he will remember
Old May 13, 2018 | 04:31 PM
  #30  
Humblelt1's Avatar
Thread Starter
Registered User
 
Joined: Apr 2018
Posts: 17
Re: 95 z28 camaro rebuilt lt1 noise issues

Pulled the pan #6 rod but gonna pull motor get rebuilt again



All times are GMT -5. The time now is 06:58 AM.