Suggest you read this.

http://www.starchak.ca/efi/siamese.htm

If you read Leo's book 1st ed. on page 87 he alludes to the cylinder timing issue, which the racers largely fixed by messing with lobe offsets.

There is a ton more article based on the mini cooper brit 4 banger. They suffer the same issues.


51 GMC 4.2 turbo
Can't solved today's problems using the same technology/thinking that created them