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Old 02-11-2014, 01:25 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 Begin of fixing the problems

Hi,

Finally the engine fitted with the new parts, i. e. roller Rockers, valve springs, push rods, mechanical bar roller lifters, new distr. gears, oil pressure sender and oil temperature sender changed. Heads/Manifold port matched and valvejob made. Melling oil pump checked and cleaned.

After some humpady rumpady noises, the engine starts running.
All disappointing noises from before are gone and I think the result is ok.

Water temperature is ok.
Oil temperature is ok.
Oil pressure marks "Zero psi" (new Sender from Summit sww-279a/80 psi).
I replaced the new Sender with the old one and it marks 40 psi idling 850 RPM.

Before replacing all the defect parts, oil pressure idling was 60-70 psi. Oil flow on valve and rockers went well and fluent.

Comparing now idling 40 psi at 850 RPM looks like a rivulet.

Questions:
a) How can I check the new oil pressure Sender?
b) How can I check how much oil has to run on the valve / rockerarm area be idling 40 psi?


Thanks, Rico
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Rico, NAF 289

Last edited by cobra 53; 02-12-2014 at 08:27 AM..
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