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#1
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Engine noise-Confuseing
Just built a new 389 for my 66 GTO. It runs great,edelbrock cam.kaufman heads etc.
When I start the motor and only when started I hear a Rattle in the lower end,think thats where it is. only last a mili second then all is fine. I have never had this before in any engine I built and I have built many. It has me confused. Has anyone had anything like this?? |
#2
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Auto trans.? If so, check flexplate bolts. Even one a bit loose will make a noise like you said you're hearing.
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CT Gross---66 GTO "Its never too late to have a happy childhood"! I told my dad I was going to stop raising hell, and he called me a quitter! |
#3
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Hard to diagnose on the web...Maybe the starter??
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#4
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I was thinking the same things. Also check your kick down cable, tranny dipstick, If you have it on, check in the tranny dust cover, maybe something sitting in the bottom of the pan. Hard to say it could be a bunch of things. I would go over the obvious things first.
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Ant 1967 Pontiac Tempest, GTO-Inspired "What's so special about having Italian food cooked by a bunch of friggin Mexicans" Paulie- Rocky Balboa "Your heart is free, have the courage to follow it" Braveheart http://i106.photobucket.com/albums/m...Wm0SlqN030.jpg |
#5
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Just had another thought. Is your starter gapped properly? I usually can tell by placing a safety clip in between it and the flexplate. Maybe the starter is staying engaged too long.. Is your flex plate new? Did you install the metal gasket that goes in with the flex plate. It was put in from the factory to stop any potential vibration and noise that might come from the flexplate not being perfectly in rotation/balance.
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Ant 1967 Pontiac Tempest, GTO-Inspired "What's so special about having Italian food cooked by a bunch of friggin Mexicans" Paulie- Rocky Balboa "Your heart is free, have the courage to follow it" Braveheart http://i106.photobucket.com/albums/m...Wm0SlqN030.jpg |
#6
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engine noise
Thanks for the input guys
Ant's diagnosis was it. the starter was staying engaged a second longer after the engine started. checked as told and the gap was to tight, shimmed it and the noise went away. thanks again all for your help. FRED |
#7
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Nice to know that it wasn't something internal, huh!
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Alan Tomorrow is often the busiest day of the week. |
#8
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Quote:
Brad |
#9
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engine noise
Hi Brad & Alan
Yes,there is no doubt bout it that when the starter shim solved the problem,I breathed a sigh of relife. We shuddered when taking this motor out the 1st time let alone having to take it out again because of possibly something we screwed up on the lower end. All I dreamt about was the crane failing and my paint job becoming a disaster. Thanks to you guys thats all just a memory. Check it out at FREDSGTO.com Thanks FRED |
#10
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Freddy,
Glad I could help. Feels good to sleep at night right, lol. I just went through a major 462swap in my 67 so it was all still fresh in my head. I am going to check your site now.
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Ant 1967 Pontiac Tempest, GTO-Inspired "What's so special about having Italian food cooked by a bunch of friggin Mexicans" Paulie- Rocky Balboa "Your heart is free, have the courage to follow it" Braveheart http://i106.photobucket.com/albums/m...Wm0SlqN030.jpg |
#11
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Wow! That car is sharp. The stance, paint job, color and motor just look incredible. Best of luck with it! Drive it in good health.
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Ant 1967 Pontiac Tempest, GTO-Inspired "What's so special about having Italian food cooked by a bunch of friggin Mexicans" Paulie- Rocky Balboa "Your heart is free, have the courage to follow it" Braveheart http://i106.photobucket.com/albums/m...Wm0SlqN030.jpg |
#12
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I agree with Ant. Nice car Fred. The page signed by your family is priceless.
Enjoy it!!!!!! |
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