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  #3021  
Old 07-05-2019, 07:48 PM
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Adding to Lynn's good advice above, exhaust leaks are best checked w/ engine cold as some disappear when engines warm up.
Have you tried removing the belts and running the engine for a moment without WP/Alt etc turning as this may help isolate whether they may be the problem or not?
Another thing to try is disconnecting each plug lead individually one by one w/ engine running to see if the sound changes...this sometimes helps indicate which cyl. has the problem as you're removing detonation from the cyl. and they're now only rotating.
Doubtful w/ a fresh engine but sometimes listening at the tailpipe and carb w/ air cleaner removed helps indicate bad valves...exhaust valve if TP noise and Intake if @ carb.

Great to hear you're getting closer to taking the Stagers for a rip!
Please say hello for me also LMK when it's happening as there's a small chance I may be able to drop by on one of my trips to/from Woodstock as I'm usually there about once a month.

~ Pete


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  #3022  
Old 07-05-2019, 09:07 PM
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Quote:
Originally Posted by Lynn View Post
Take the probe off the stethescope and listen with the open vac hose for an exhaust leak.

If you get close to an exhaust leak, you will know it immediately.

The exhaust leak will also be slightly louder under a slight load, so best way is to have someone in the car (that you TRUST) put it in drive with their foot on the brake and give it just enough gas to get it over 1000 rpm. Exhaust noise will be more pronounced.

Good luck.
Thanks Lynn, I will try the no probe listening.

My car is a 4 speed so I will have my hunny rev it up a little.

Ryan W31
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  #3023  
Old 07-05-2019, 09:09 PM
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Quote:
Originally Posted by PeteLeathersac View Post
'

Adding to Lynn's good advice above, exhaust leaks are best checked w/ engine cold as some disappear when engines warm up.
Have you tried removing the belts and running the engine for a moment without WP/Alt etc turning as this may help isolate whether they may be the problem or not?
Another thing to try is disconnecting each plug lead individually one by one w/ engine running to see if the sound changes...this sometimes helps indicate which cyl. has the problem as you're removing detonation from the cyl. and they're now only rotating.
Doubtful w/ a fresh engine but sometimes listening at the tailpipe and carb w/ air cleaner removed helps indicate bad valves...exhaust valve if TP noise and Intake if @ carb.

Great to hear you're getting closer to taking the Stagers for a rip!
Please say hello for me also LMK when it's happening as there's a small chance I may be able to drop by on one of my trips to/from Woodstock as I'm usually there about once a month.

~ Pete


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Thanks for the advice!!!

I will let you know as soon as we agree on a date!!

Ryan W31
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1969 Oldsmobile Cutlass 'S' Sports Coupe W31
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  #3024  
Old 07-06-2019, 03:31 PM
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Have you gone through the car and checked to make sure evrything is tight? Often times, after items run through heat cycles the hardware needs to be tightened/adjusted. Get the engine up to normal operating temperature and then check exhaust manifold bolts; the noise, if it a loose bolt, should disappear after tightening if that is the cause for your ticking noise. Valvetrain noise and exhaust leaks can have a very similar sound. You said you have Comp Cams parts that are replacements of original style? Is this correct? If so, you shouldn't have an issue as originally, there really wasn't any further adjustment after installation. I doubt FJ would've harmed anything in the dyno room; he is a seasoned veteran and knows the ropes. Does the noise get louder or change when the engine is warm/hot? Kinda hard to do with a stick, but as others have asked, does it change under a load? If you have to, jam on the e-brake, put chocks on all four wheels, and let clutch slip a bit while in first gear and see if what you're hearing changes; do this only as a last resort, and if you aren't comfortable trying it, don't. Unplug PCV and see what happens; I've seen dimestore PCV valves make noise, but not loud enough to mimick an exhaust leak. Is your heat riser working properly?
Other members have given great advice/ideas to isolate noise.
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  #3025  
Old 07-06-2019, 03:40 PM
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As always Great advise Dave.....true on the PCV Valves.

Dan
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  #3026  
Old 07-06-2019, 04:57 PM
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"My car is a 4 speed so I will have my hunny rev it up a little."

I knew that.... brain fart.

With a manual trans, the exhaust leak (if it is one) will normally be a little louder under light load at very low rpm... just as you are starting out.
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  #3027  
Old 07-06-2019, 06:16 PM
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Awesome info guys!!

Now I need to work through this list.

Ryan W31
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1969 Beaumont 350 Auto White Sold
1969 Beaumont 307 Auto Green Sold
1969 Chevelle SS 396-L35 Auto Blue Sold
1969 Oldsmobile Cutlass 'S' Sports Coupe W31
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  #3028  
Old 07-06-2019, 09:07 PM
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https://m.youtube.com/watch?v=HDRoGlfNUo4

The sound I don’t like is exactly like when I push the rocker side to side but muted.

Ryan W31
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1969 Oldsmobile Cutlass 'S' Sports Coupe W31
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  #3029  
Old 07-10-2019, 10:56 AM
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I am getting more and more confident that the mechanical noise I was concerned about is normal for this valve train.

Friends stopped by last night and Laura’s Dad sent me another Olds book. (He wanted it to go to a good home, Yup)

I took the guys for a little cruise and pushed the right pedal a little further, I like it, this car feels quick, I even did a little traction test and there is zero lag both black stripes start at the same time :-)

The shifter is functional but nowhere near usable for PSMCDR so I need to “shift” my focus back to the shifter :-) The Competition Plus has such a long throw, between gears the knob has to move like half a foot.... I am so tempted to follow in Al’s foot steps and put the Street Super Shifter back in the car that he installed back in the day. I would use the red H Boot that Pete Leathersac sent me to dress it out..... Hmmmmm.....

Ryan W31
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1969 Oldsmobile Cutlass 'S' Sports Coupe W31
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  #3030  
Old 07-10-2019, 10:14 PM
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Some jerk put two black marks on my street. Any suspects? (The gravel was on the exit side of the vroom vroom)

:-)

Ryan W31
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1969 Beaumont 307 Auto Green Sold
1969 Chevelle SS 396-L35 Auto Blue Sold
1969 Oldsmobile Cutlass 'S' Sports Coupe W31
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