M96 Engine out jobs
Discussion
Hi all - I am likely going to pull the engine on my Boxster this winter, in order to do various jobs (one of which is drilling out all the exhaust studs, this will be a lot easier in the garage rather than upside down outside on my back).
Its an M96.22 ,variant, 2.7 litres, 5 chain version. No EML or other indications of poor timing etc. Doesn't burn oil or smoke and holds temp fine, runs well, but is on 137k and is starting to get a bit noisy on startup from the chain drive.
Already planned on the engine itself would be:
- All fluids, plugs, service items
- Inspect coils and replace if required
- Replace plug tubes/seals
- Inspect oil cooler and replace sealing o-rings
- Replace waterpump
- Replace drive belt and press new cartidge bearings into the idlers (noisy/rough)
- Replace chain tensioner seals/o-rings (bit leaky)
- Replace RMS
- Clean/inspect/replace as required the intake system
- Inspect/potentially replace the chain guides/pads, as I suspect they are completely buggered after 137k.
I also want to check and sort any corrosion on the body, clean everything, fit the full new exhaust system and the replacement transmission mounts I've just ordered.
What other jobs should I be looking at carrying out whilst the engine is out? Bear in mind this is all free labour to be done by myself over a few months in winter, at minimal possible cost.
Its an M96.22 ,variant, 2.7 litres, 5 chain version. No EML or other indications of poor timing etc. Doesn't burn oil or smoke and holds temp fine, runs well, but is on 137k and is starting to get a bit noisy on startup from the chain drive.
Already planned on the engine itself would be:
- All fluids, plugs, service items
- Inspect coils and replace if required
- Replace plug tubes/seals
- Inspect oil cooler and replace sealing o-rings
- Replace waterpump
- Replace drive belt and press new cartidge bearings into the idlers (noisy/rough)
- Replace chain tensioner seals/o-rings (bit leaky)
- Replace RMS
- Clean/inspect/replace as required the intake system
- Inspect/potentially replace the chain guides/pads, as I suspect they are completely buggered after 137k.
I also want to check and sort any corrosion on the body, clean everything, fit the full new exhaust system and the replacement transmission mounts I've just ordered.
What other jobs should I be looking at carrying out whilst the engine is out? Bear in mind this is all free labour to be done by myself over a few months in winter, at minimal possible cost.
On the car; the following jobs are far easier with the engine and transmission out:
- Coolant header tank
- Rear crossover brake pipes
- Gear cables
- Clutch slave cylinder
The 2.7 engine isn't known for excessive wear except for the previously mentioned Variocam adjuster/tensioner slippers. You can change the main chain guides without removing the heads - the IMS chain guides will require a full strip though. Not seen the HD duplex chains stretch on a 2.7; but the simplex chains on the the Variocam units would definitely be on the list while you're in there. Check the bucket tappets; any soft ones will be immediately apparent but the inlet ones have been known to wear through - wipe with brake cleaner; swirls are fine but any loss of hardened running surface, get them out.
- Coolant header tank
- Rear crossover brake pipes
- Gear cables
- Clutch slave cylinder
The 2.7 engine isn't known for excessive wear except for the previously mentioned Variocam adjuster/tensioner slippers. You can change the main chain guides without removing the heads - the IMS chain guides will require a full strip though. Not seen the HD duplex chains stretch on a 2.7; but the simplex chains on the the Variocam units would definitely be on the list while you're in there. Check the bucket tappets; any soft ones will be immediately apparent but the inlet ones have been known to wear through - wipe with brake cleaner; swirls are fine but any loss of hardened running surface, get them out.
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