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Old 10-24-2013, 03:05 PM
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cobra 53 cobra 53 is offline
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Join Date: May 2006
Location: Denia / SPAIN, ESP
Cobra Make, Engine: NAF 289 Blue/White strips
Posts: 188
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Default News about my Engine problems

Summary of the earlier damages causing engine noises (see threads before)
Have a look at the first video and first photo.

I have changed the valve springs and pushrods into products recommended by Comp Cam to match the Solid Roller Cam.
I started the engine and the noises were gone (see second video).
Test drive of about 10 miles and car sounds alright.

I ordered new oil 10/40 Castrol Magnatec incl. new filter. I changed oil from 10/60 into the new 10/40. Totally 9 Quarts incl. filter. No metal on magnetig drain screw. Starting the engine, I realized new problem and new different noise (see third video).

I tried to localize the noise with my stethoscopes and it seemed to come from the area 5th cylinder towards distributor and Center of intake manifold.
Accordingly I decided to take off the distributor. Bronce gear was covered with a fine oil film, but looking at it closer I saw signs of wear. Cam gear ok (see photos 4 & 5).

Question: Does the noise come from distributor, as there are wrong ignition times?
After putting the distributor back and starting the engine, the oil pump is working.

After the discovery the defect bronce gear, I cut the old oil filter to check, if there are small metal parts left (see photos 2 & 3).

Car idling approx. 550 RPM (not adjusted), normally it would be 850 RPM.

The oil moves slowly through the Rockers and valve springs (see video 4). The oil pressure shows 70 psi and stays like this with warm motor and oil.

Touching the throtle, the oil starts splashing more, but the oil pressure remains at 70 psi.

Question: Is it possibly a defect oil sensor?

Do you have any suggestions??? As I am an V8 newbie, I am at a loss!

Rico

SBF 302 Engine noise 4 - YouTube
SBF noise 12 - YouTube
SBF 302 Engine noise 10 - YouTube
Oil pressure - YouTube
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Rico, NAF 289

Last edited by cobra 53; 10-24-2013 at 04:04 PM..
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