Hi Guys

what are your thoughts

would you think running this base file on a supercharged BMW M3 S54 for 10 months is safe:
full throttle AFR
[img]https://lh3.googleusercontent.com/paCCFqpWIyTOj2jetDSSL5iezOkNEJtNsK91cmaMzvI=w944-h643-no[/img]

https://lh3.googleuserco...sK91cmaMzvI=w944-h643-no

part throttle AFR

https://lh3.googleuserco...526dpWZnvSg=w853-h643-no

if not what sort of damage would you expect

Edited by user Saturday, August 08, 2015 10:10:03 PM(UTC)  | Reason: cant get pics to work

Thanks for your response :)

thought it would be better to look at the AFR in isolation but i guess it would be best to get all the facts out on the table and look at it as a whole

compression ratio was 11.3 to 1 was was done with a thicker head gasket pump gas was used

bottom end was fully build with 11.5 to 1 forged pistons, rods and bearings from Vac I can get the details on all parts used if needed

the block was re-sleeved with 87.5mm bore

unfortunately this engine failed and lost compression in two cyl
we are not sure if it was the base file for 10 months, engineering or the engine build

No sign of fuel/bore wash. Honing pattern is still intact, No rings have failed.

Block is cracked between cylinders 4 and 5. Sleeves cracked in all cylinders
on

there are signs of detonation from what I was told and should have pictures next week of the pistons

Bearings seem fine. Crank is being inspected. Rods seem fine

Edited by user Saturday, August 15, 2015 12:46:33 AM(UTC)  | Reason: Not specified