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#1
04-18-2010, 09:21 PM
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Engine noise
Started the new motor today and there is a noise, trying to determine what it is?Rod knocking or the cheap headers are not sealing to the head? The motor is a hydrallic roller. Does anyone have any idea or do I need to take the motor back out
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#2
04-18-2010, 09:26 PM
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what kinda heads?
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#3
04-18-2010, 10:40 PM
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Check around your header connections with your hand [carefully] or piece of paper to see if you've got a header leak. Take a look at the simple stuff first.
Good luck Jim
__________________
65 Catalina sedan. Allen Thomas Performance 495. KRE Heads at 310cfm ported by SD Performance, ProSystems Dominator carb on ported Victor intake, P-Dude custom grind hydraulic roller, MSD ignition, 3.50 Moser/Ford rear. F-Glass front bumper by son Rob, rear by the old man and joint effort for trunk lid. 3950# w/driver. Best of 9.5761/139 on 175 shot, 6.01 /114 in 1/8. |
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#4
04-18-2010, 11:09 PM
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Some of the more aggressive hydraulic rollers I have used make some very strange noises. More pronounced when cold. Can you post a recording of the noise? If not can you describe the noise?
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#5
04-18-2010, 11:41 PM
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Tell us more about the motor please.
Like does it have a solid style windage tray in it? I've run into occasions where a rod was just barely smacking the windage tray and it sounded a bit like a rod knock. If the noise sounds like it's further up,I'd ask if you hosed down & cleaned the HR lifters to clear out any of the storage lube/protectant or such. Flexplate bolts all tight? If it's more of a ticking sound (ie:exhaust leak),could also be a rocker hitting a valve cover,or a pushrod rubbing against the head or such. Could be lots of possibillities.  Bret P. |
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#6
04-19-2010, 08:55 PM
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The heads are 670,new valves and springs to accomidate the camshaft.2.11 and 1.77. There is no windage tray and the converter bolts are tight. The motor is a 1974 455 bored 30 over. Nothing out of the ordinary. I am going to get access to a smoke machine and stick it in the tail pipe and close the valves on each cylinder untill I check them all. That will tell me if the header is sealed to the head
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#7
04-20-2010, 01:16 AM
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which valley pan? no baffle aftermarket or factory valley pan with baffle properly hammered to clear hyd rollers?
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#8
04-20-2010, 02:01 AM
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Just take a 2' length of hose and hold one end up to your ear and move the other end over the header flange. After this continue with the hose over the valve covers and anywhere else you want to isolate the noise. Amazing how effective this technique is in finding the source of strange noises.
__________________
Mick Batson 1967 original owner Tyro Blue/black top 4-speed HO GTO with all the original parts stored safely away -- 1965 2+2 survivor AC auto -- 1965 Catalina Safari Wagon. |
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#9
04-20-2010, 09:01 PM
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It has a stock valley that had the spot welds drilled to remove the lower half and then hammered for clearence.
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#10
04-20-2010, 09:10 PM
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The noise is more of a knock than a ticking sound
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#11
04-21-2010, 09:11 PM
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sounds like the lifters are hitting the valley pan, I will find out friday night. Thanks to eveyone
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#12
04-23-2010, 12:05 AM
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I heard that sound more than once. It can be very loud. I hope that is the problem. Will be a very easy fix for you.
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#13
04-26-2010, 09:17 PM
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The valley pan was tightened to much and 1 side went below the head. ***** happens It's fixed and we plan on taking it to the track this weekend. Thanks everyone with the help
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