Forum Replies Created
- Replies
Ok, I forgot to update everyone. Right after I asked for 800.00 I found a mechanic, ( who is now one of my best friends) and he opened up the intake and we replaced the cam, lifters, timing chain and put on a cam button. We found the noise is actually the distributer pushing the cam back and fourth and the front lobe knocks up against the engine block. We solved it by buying a cam button from a 4.9 Cadillac engine and that kept the cam from rocking back and fourth. I am using the proper 5W-30 as per the owners manual and it’s quiet as a church mouse. I’m now using the new HT-12 Vavoline green coolant, which is only sold through BMW, here in the states. It saves you from have a heat exchange issue as well as any corrosion from the dissimilar metals, so no need for the pellets. I bought used all NOS parts including a NOS water pump and it’s been perfect ever since.
Mobil 1 Synthetic 15W-50 and a special additive took care of any an all noise. Its like it isn’t even running. I was told run 1 quart of Marvel mystery oil in the crank case with the 15-50 and it will thin it out to 10-40 then it will have all of the extra zinc that you wont get out of the other oils.
Well, except for the clearance issues with the crank bearings there is no issue with power or performance. I had one when brand new in 83 put 100K miles on it drove it across country towing a u haul trailer (in the summer) and never had to ever take it to a shop for repairs. I always kept the maintenance up and never thought it was ever an issue. I actually loved the car so much I waited until I could find a brand new example and I did. The cam knock isn’t bad I just want it whisper quiet. Its almost gone and I am in the car very deep. I have been offered what I’m in it for but am not selling a brand new 34 year old car. So, I just wanted an answer to my original question that if changing up oil weights would keep the sound unnoticeable. I only drive my collector cars 500 miles a year anyway.
No, its a show car and can not be changed out for another engine. It will kill its value. I only want to mask the problem. I know it’s there and I don’t care, I just don’t like hearing that puffing noise. Will 15W-50 work with the Lucas work better than the 0w-30 with the Lucus? I can’t get straight 50W, as it is special racing oil and will be extremely expensive in a full synthetic. I’m just asking would changing up the viscosity and adding the Lucas make it quieter? Its pretty quiet now but in the summer when its 125*, I’m thinking it will thin out pretty fast and be louder. Please advice.