Tech / General Engine Is your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
Sponsored by:
Sponsored by: CARiD

305 cfi rebuild issue.

Thread Tools
 
Search this Thread
 
Old May 22, 2012 | 04:04 PM
  #1  
82_Camaro's Avatar
Thread Starter
Member
 
Joined: Aug 2009
Posts: 195
Likes: 0
From: Chicagoland south suburbs
Car: 82 Z28
Engine: 350
Transmission: Turbo 200C
Axle/Gears: 3.43
305 cfi rebuild issue.

i rebuilt my 305 cfi and have had nothing but issues. i put a comp cams 12-364-4 in it which is a 1.6 when my car was a 1.5. i put self aligning roller rockers and beehive springs. i am having a problem with a ticking but when i put the stethoscope to the valve covers i can't tell which its coming from. when i adjusted the rockers i put them at a full turn from zero lash and had it running horribly. so i backed them all off a quarter turn. then it sounded like a tick from cylinder 1 so i tightened them another 1/8 a turn yet it still sounds like a tick. its the same sound coming from all the cylinders so i have no idea where or what it is. i also hear a clunking sound from the engine compartment. i listened at the timing cover to see if that was it cause i put in a double roller. its not. nothing under the block not from in tae or heads wither. or water pump. can't figure it out. I'm wondering if its from the conversion from 1.5 to 1.6. any word would help please. btw there is also a knock sensor in the block but there isn't any codes or engine light on. please help thanks.
Reply
Old May 22, 2012 | 04:07 PM
  #2  
0pyders's Avatar
Member
10 Year Member
iTrader: (3)
 
Joined: Nov 2009
Posts: 453
Likes: 0
From: Saint Louis, MO
Car: 86 Firebird LG4
Engine: 350
Transmission: 700r4
Axle/Gears: 3.23 limited slip
Re: 305 cfi rebuild issue.

Did you look at the bottom of your valve covers for marks? maybe the rockers are hitting them. I had the same problem using aftermarket covers and had to shave off a little metal where they were hitting.

Maybe you put them on backwards? I did that once too lol.
Reply
Old May 23, 2012 | 12:33 AM
  #3  
82_Camaro's Avatar
Thread Starter
Member
 
Joined: Aug 2009
Posts: 195
Likes: 0
From: Chicagoland south suburbs
Car: 82 Z28
Engine: 350
Transmission: Turbo 200C
Axle/Gears: 3.43
Re: 305 cfi rebuild issue.

Originally Posted by 0pyders
Did you look at the bottom of your valve covers for marks? maybe the rockers are hitting them. I had the same problem using aftermarket covers and had to shave off a little metal where they were hitting.

Maybe you put them on backwards? I did that once too lol.
Someone else told me the same thing about checking the covers. I just havnt gotten around to checking them yet. Lol. I will do in the morning
Reply
Old May 24, 2012 | 12:39 PM
  #4  
82_Camaro's Avatar
Thread Starter
Member
 
Joined: Aug 2009
Posts: 195
Likes: 0
From: Chicagoland south suburbs
Car: 82 Z28
Engine: 350
Transmission: Turbo 200C
Axle/Gears: 3.43
Re: 305 cfi rebuild issue.

Originally Posted by 0pyders
Did you look at the bottom of your valve covers for marks? maybe the rockers are hitting them. I had the same problem using aftermarket covers and had to shave off a little metal where they were hitting.

Maybe you put them on backwards? I did that once too lol.
well there isnt any marks on my covers. i called comp cams and the lifters i have are 858-16. those are short travel lifters they said at max they have to be 1/8 turn from zero lash and i just did that and they are still ticking. im about to do a lt1 swap cause im so frustrated. are short travel lifters suposed to be loud?
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Jake_92RS
Tech / General Engine
8
Jan 28, 2020 10:37 PM
Cornholio7979
TPI
4
Sep 20, 2018 02:31 AM
jklein337
Tech / General Engine
2
Sep 19, 2018 06:23 PM
fbirdroller
Electronics
11
Sep 2, 2015 10:27 PM
someone972
Transmissions and Drivetrain
6
Aug 30, 2015 12:52 AM




All times are GMT -5. The time now is 07:45 AM.