Engine running hot

[SCRed]

I recently installed Millenium Cylinders on my BC12. The engine runs great, I have good power, however, I have noticed that the engine now runs hotter by narly 20 degrees. Up to 200 from 180 before. Has anyone else who switched to Millenium cylinders had this problem? I know there is a slight difference in shape of the new cylinders. The spark plugs seem to sit lower than they did previously.

[Ragwing nut]

Re: Engine running hot

If you have 10 hours or less, don't worry too much. The rings have not seated yet and heat from the combustion is going by the rings and heating the oil. When the rings seat, the temp will drop. Run a compression check to verify.

Mike

[Carl E. Carson]

Re: Engine running hot

I recently installed Millenium Cylinders on my BC12. The engine runs great, I have good power, however, I have noticed that the engine now runs hotter by narly 20 degrees. Up to 200 from 180 before. Has anyone else who switched to Millenium cylinders had this problem? I know there is a slight difference in shape of the new cylinders. The spark plugs seem to sit lower than they did previously.

I have just over 200 hours (SMOH) on new Millenium cylinders and I am consistently running about 200 degrees (less in Iowa winters!!). My compression is excellent so it may be a trait of the cylinders. Other comments are sure welcomed about this topic. Before the MOH I ran about 160-165 degrees.

[AndyDuke]

Re: Engine running hot

I've recently switched from mineral oils (W80/W100) to Shell's 15-50 Oil and noticed a decrease in the engine temps. During the summer months, which have been very hot this year, I've noticed a drop of around 15 degrees F compared to previous years.