The problem is that crackles fall off valve? - LS1TECH

Log In 


Generation IV Internal Engine 2005-2014 LS2 | LS3 | LS7 | L92 | LS9
Sponsored by:
Sponsored by:

The problem is that crackles fall off valve?

Reply
 
Thread Tools Search this Thread
Old 05-26-2012, 04:22 PM   #1
Teching In
Thread Starter
 
Join Date: Jun 2010
Posts: 2
Default The problem is that crackles fall off valve?

Hello I have a problem with my Chevy engine twin turbo.
I have an LSX block with warhak heads and an original cam and stiffer valve springs.

The problem is that crackles fall off valve
first time it was on an exhaust valve. when the valve stem had been gnawed by the crunch. After that we changed brands. and this time it has an intake valve keepers fallen off.

I lathes 6400rpm max.
and I charge a maximum of 20psi (1200hk 1633nm)
and when this happened I loaded 10 psi (750hk and 1200nm)

What can cause this problem?
it may be rpm stop?
boost pressure?

Regards
Jonas Hallenborg
Sweden
Hallenborg is offline   Reply With Quote
Old 05-26-2012, 06:33 PM   #2
TECH Apprentice
iTrader: (6)
 
96 Comp T/A's Avatar
 
Join Date: May 2002
Location: Tampa FL
Posts: 388
Default

Any pictures to better illustrate what you are talking about?
96 Comp T/A is offline   Reply With Quote
Old 05-26-2012, 08:53 PM   #3
TECH Junkie
iTrader: (11)
 
S10xGN's Avatar
 
Join Date: Jul 2005
Location: Port Neches, TX
Posts: 3,601
Default

Hmmm, something's getting lost in the translation...
S10xGN is offline   Reply With Quote
Old 05-27-2012, 08:08 PM   #4
TECH Fanatic
iTrader: (34)
 
outkast6991's Avatar
 
Join Date: Jun 2004
Location: lancaster,pa
Posts: 1,625
Default

Sounds like he's chewing up valve tips but I'm no expert in Swedish
outkast6991 is offline   Reply With Quote
Old 05-27-2012, 09:07 PM   #5
TECH Apprentice
iTrader: (6)
 
96 Comp T/A's Avatar
 
Join Date: May 2002
Location: Tampa FL
Posts: 388
Default

He didn't say specifically, but if the OP is using titanium valves, typically lash caps are used to prevent wear and tear. Definitely in need of pictures or a better description of what is occuring.
96 Comp T/A is offline   Reply With Quote
Old 05-27-2012, 11:12 PM   #6
Launching!
 
Join Date: Sep 2008
Posts: 202
Default

Contact CamaroAndreas on here: http://ls1tech.com/forums/member.php?u=99114

He is from Sweden and can help you. He has a VERY fast 2000+hp twin turbo car.
Adam Connell is offline   Reply With Quote
Old 05-28-2012, 12:55 AM   #7
Teching In
 
Join Date: Mar 2012
Posts: 42
Default

Yea pictures would help but I was thinking, it sounds like you are possibly saying that the valve looks chewed up where it seals to the head. If this is the case it could be caused by heat and the pressure dropping causing the valve to burn. Better valves, like something sodium filled, could solve a problem like that.
slpfirehawk415 is offline   Reply With Quote
Reply


Tags
car, engine, fall, valve

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are On
Refbacks are Off



All times are GMT -5. The time now is 01:27 AM.