However, the new system made the cylinder head very hot.

Small changes were made to the cylinder head for the 1995 model year.

Both banks live under one cylinder head, and the whole thing takes up about the same space as a four.

The most obvious external difference is seen on top of the cylinder head.

This hole goes into the water jacket of the cylinder head.

Also, the cylinder head needs to have enough space to support an extra valve for the air start system.

If it becomes damaged the cylinder head must be replaced.

The cylinder head was again changed for the 2000 model year to a more emissions-friendly design.

He found that the best solution was to have only one possible leak site above the cylinder heads.

"Mainly, the technology in the cylinder heads and the fuel systems is the real key," he said.