rebuilt 383 stroker LS1 knocking noise help!
Thread Starter
Teching In
Joined: Oct 2010
Posts: 15
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rebuilt 383 stroker LS1 knocking noise help! i recently had my LS1 stroked to 383ci and also bolted with an Harrop HTV2300.
when i picked it up, i noticed a slight knocking noise coming from the passenger side. i took it back and asked my tuner. he said it sounds orite and told me to check it on a cold start to see if theres a knocking sound still there.
so the next day i wake up and turn her on. when its cold no knocking noise. after its all warmed up maybe roughly 20mins after start up, the knocking comes back. i told my tune and he said it sounds like the pushrods are to short.
i asked him if we should change it and said it will be fine.
i dont want to do an damage to my new motor, but if it is and pushrods the wrong size (too short). will it do any damage?
heres too vids:
cant realy hear it over the glimer belt... as i walk away you can hear the valvetrain noise!
http://www.youtube.com/watch?v=fEtUd...el_video_title
http://www.youtube.com/watch?v=6z_vH...el_video_title
when i picked it up, i noticed a slight knocking noise coming from the passenger side. i took it back and asked my tuner. he said it sounds orite and told me to check it on a cold start to see if theres a knocking sound still there.
so the next day i wake up and turn her on. when its cold no knocking noise. after its all warmed up maybe roughly 20mins after start up, the knocking comes back. i told my tune and he said it sounds like the pushrods are to short.
i asked him if we should change it and said it will be fine.
i dont want to do an damage to my new motor, but if it is and pushrods the wrong size (too short). will it do any damage?
heres too vids:
cant realy hear it over the glimer belt... as i walk away you can hear the valvetrain noise!
http://www.youtube.com/watch?v=fEtUd...el_video_title
http://www.youtube.com/watch?v=6z_vH...el_video_title
I ran 7.35 push rods in my engine with no damage at all for 5 years. I had a friend give me some 7.4 and i put them in just to see if it made it quiet down. It worked to quiet them down but still never hurt anything to be a tad to short.
You will be fine
You will be fine
Thread Starter
Teching In
Joined: Oct 2010
Posts: 15
Likes: 0
yeah thanks mate, i hope im fine. allready spent a sh*t load on $$$ on the motor. dont really wanna build another one...
my tuner explained to me, when the motor is cold everything is fine. as it warms up, everything expands from the heat. the pushrods dont expand and stay the same length which is cuaseing the slight ticking noise.
my tuner explained to me, when the motor is cold everything is fine. as it warms up, everything expands from the heat. the pushrods dont expand and stay the same length which is cuaseing the slight ticking noise.
Hello , the only real possible problem with short rods is the possibility of 1 kinda popping out when it's cold , but wil it happen ? it depends on just how short they are . If You were to measure each and every 1 You most likely would have a range of differing lengths usually all within maybe .010" or so . So if 1 were to pop out it would probably be 1 of the 1's with the most play . I agree with the previous poster that said measure to be safe . Good luck
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yeah thanks mate, i hope im fine. allready spent a sh*t load on $$$ on the motor. dont really wanna build another one...
my tuner explained to me, when the motor is cold everything is fine. as it warms up, everything expands from the heat. the pushrods dont expand and stay the same length which is cuaseing the slight ticking noise.
my tuner explained to me, when the motor is cold everything is fine. as it warms up, everything expands from the heat. the pushrods dont expand and stay the same length which is cuaseing the slight ticking noise.
Im not sure but that strikes me as wrong. why would the push rod not heat up and expand? if anything I would think that when it got hot it would be queiter since everything would expand and take up any slop.
Am I wrong?
