My first REAL SCARE with the Boxster! need some advice..

[Smallblock454]

Hello CrisZenithBlue,

i think the idea is not to have a list what should be replaced. The idea is more what should be checked and replaced if it's out of specs.

That is why i said you can only do an estimate if the engine is disassembled and everything is measured and given an opinion of.

Has to be checked:
- hydraulic lifters
- all plastic chain ramps (in general it makes sense to replace them all)
- all chains (length)
- IMS bearing, IMS tube and everything connected to the IMS
- Vario cam system
- valves, valve springs, valve seats, cylinder heads
- sparks (in general it makes sense to replace them all)
- spark cables
- ignition coils (in general it makes sense to replace them all)
- cylinders (roundness has to be checked also also if the coating has be harmed by metal). If they are not 100% round you have to decide what to do.
- pistons (roundness, marks)
- piston rings
- rod bearings
- crankshaft bearings
- if oil is in the cooling system, the complete system has to be cleaned and it is better to replace radiators, hoses and the air / oil cooler, because oil eats rubber
- all engine parts have to be washed, cleaned and checked
- all connectors and hoses
- AOS; makes sense to replace
- all filters, oils and coolants
- sealings must all be replaced, and a lot of rods and screws must also be replaced
- clutch and dual mass flywheel has to be checked
- also it is useful to check oil pump, water pump, generator, climate compressor, starter…
…

The list is even longer and i'm shure i forgot something. Before you have a complete diagnosis you can't say what to do.

In general: everything that has caused the problem must be replaced. Everything that is worn out of specs should be replaced.

I you are looking for a replacement engine, what makes shure that this engine hadn't major problems before?

Not an easy decision. Hope that helps.

Regards, Markus

[CrisZenithBlue]

Originally Posted by Smallblock454

Hello CrisZenithBlue,

i think the idea is not to have a list what should be replaced the idea is waht sould be checked and replaced it it's out of specs.

That is why i said you can only do an estimate if the engine is dissassembled and everything is measured and given an opinion of.

Has to be checked:
- hydraulic lifters
- all plastic chain ramps (in general it makes sense to replace them all)
- all chains (length)
- IMS bearing, IMS tube and everything conected to the IMS
- Vario cam system
- valves, valve springs, valve seats, cylinder heads
- sparks (in general it makes sense to replace them all)
- spark cables
- ignition coils (in general it makes sense to replace them all)
- cylinders (roundness has to be checked also also if the coating has be harmed by metal). If they are not 100% round you have to decide what to do.
- pistons (roundness, marks)
- piston rings
- rod bearings
- crankshaft bearings
- if oil is in the cooling system, the complete system has to be cleaned and it is better to replace radiators, hoses and the air / oil cooler, because oil eats rubber
- all engine parts have to be washed, cleaned and checked
- all connectors and hoses
- AOS; makes sense to replace
- all filters, oils and coolants
- sealings must all be replaced, and a lot of rods and screws must also be replaced
- clutch and dual mass flywheel has to be checked
- also it is useful to check oil pump, water pump, generator, climate compressor, starter…
…

The list is even longer and i'm shure i forgot something. Before you have a complete diagnosis you can't say what to do.

In general: everything that has caused the problem must be replaced. Everything that is worn out of specs should be replaced.

I you are looking for a replacement engine, what makes shure that this problems had any major problems before?

Not an easy decision. Hope that helps.

Regards, Markus

not an easy decision for sure Markus. i really appreciate you taking the time to write this up!
i didnt have any oil in the coolant, level was exactly the same so i might save myself some headaches there.

i'm still a bit on the fence about a rebuild, sounds like a lot of things that could be overlooked and end up causing problems down the road. i guess it comes down to the mechanic doing a thorough job and me agreeing to replace whatever is needed.

used engine is a gamble but so could a rebuild.