R500D head gasket replacement
Discussion
Re the timing - the crank has a pin that locks it in place through the side of the block, and the cams have a flat on the end, which again will only go in one position using the special tool (ie bit of flat bar)
If I'm missing something obvious, please tell me because I'm replacing a head gasket next week!
If I'm missing something obvious, please tell me because I'm replacing a head gasket next week!
As soon as you undo the crank damper pulley bolt, it's bye bye cam timing. Needs to be measured accurately but someone who knows what they are doing. Also if the original settings are lost, this could cause issues with the ECU calibration as cams might end up being reset on different settings. So get this wrong, worse case is cam timing reset, new unlocked ECU and a remapping session on the rollers. Worse still, get something wrong with cam timing and suffer piston to valve contact. Now it is starting to get expensive.
Regards SKC
Regards SKC
To answe some of the questions;
Not sure why it went, it just started pressurising the coolant heavily. Head lift at 9000rpm could be a possibility, it has ARP head studs though, so you’d assume it wasn’t that!
It has an arrow keywayed crank, so the crank timing is pretty much set.
Cam timing would be a worry.
It’s already on Omex so map changes aren’t the end of the world.
Not sure why it went, it just started pressurising the coolant heavily. Head lift at 9000rpm could be a possibility, it has ARP head studs though, so you’d assume it wasn’t that!
It has an arrow keywayed crank, so the crank timing is pretty much set.
Cam timing would be a worry.
It’s already on Omex so map changes aren’t the end of the world.
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