01-15-2015, 08:10 AM
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#1
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Registered User
Join Date: May 2014
Location: S.California
Posts: 2,029
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The chain ramp plastic debris problem is greater than the small size of the particles ?
If you've had an M96 apart ,you'll have seen how tiny and clog-prone some oilways are. One example- the oil squirters aimed at the underside of the pistons. One plastic particle would pass through that oilway under pressure. But if the particles accumulate and/or adhere with other contaminants/debris it could be the beginning of a lubrication related failure.
The best remedy is obvious - replace the offending ramps promptly and carefully monitor for debris in future.Better, replace them proacively before 70 k miles? But the time, the cost, you'll be without your car, it might not be a problem - yes all those excuses and more.
But what about the debris distributed elsewhere in the engine? In a conventional engine you could flush with a high detergent oil a few times. I doubt the experts would recommend that in the M96 ?
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01-15-2015, 08:32 AM
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#2
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Registered User
Join Date: Oct 2014
Location: California Central Coast
Posts: 1,476
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Quote:
Originally Posted by Gelbster
The chain ramp plastic debris problem is greater than the small size of the particles ?
If you've had an M96 apart ,you'll have seen how tiny and clog-prone some oilways are. One example- the oil squirters aimed at the underside of the pistons. One plastic particle would pass through that oilway under pressure. But if the particles accumulate and/or adhere with other contaminants/debris it could be the beginning of a lubrication related failure.
The best remedy is obvious - replace the offending ramps promptly and carefully monitor for debris in future.Better, replace them proacively before 70 k miles? But the time, the cost, you'll be without your car, it might not be a problem - yes all those excuses and more.
But what about the debris distributed elsewhere in the engine? In a conventional engine you could flush with a high detergent oil a few times. I doubt the experts would recommend that in the M96 ?
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I will have more info on chain ramp condition once I open up the filter today. Since I have the LN adapter I should see 100% of the circulating debris. The car is not a daily driver, unless the weather is nice! I also enjoy the mechanical pursuit. However if I go so far as ramps and tensioners then I might just change the IMS and clutch ? As far as engine flush is concerned, and I am probably wrong, but I believe according to what Jake has written, the lifters are at the end of the oil galleries and would likely fill with the debris being flushed? This is only my interpretation to what I think I read. My apologies to Jake if I am incorrect.
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01-15-2015, 03:43 PM
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#3
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Registered User
Join Date: Oct 2014
Location: California Central Coast
Posts: 1,476
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Okay, so I cut open the oil filter, there were 2 more pieces of chain ramp in there. That's a lot better than I was expecting! However while down there I pulled the engine serial number 2065X24614, Is this a reman engine???
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01-15-2015, 04:19 PM
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#4
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Reebuck1
Join Date: May 2013
Location: Georgetown, SC
Posts: 210
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Ramps
Pull your valve covers and look at your ramps to be sure !
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01-15-2015, 04:22 PM
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#5
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Registered User
Join Date: Aug 2009
Posts: 1,466
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You Have M96.20 1999 2.5 engine #24,614 0f 60,000
__________________
2003 Black 986. modified for Advanced level HPDE and open track days.
* 3.6L LN block, 06 heads, Carrillo H rods, IDP with 987 intake, Oil mods, LN IMS. * Spec II Clutch, 3.2L S Spec P-P FW. * D2 shocks, GT3 arms & and links, Spacers front and rear * Weight reduced, No carpet, AC deleted, Remote PS pump, PS pump deleted. Recaro Pole position seats, Brey crouse ext. 5 point harness, NHP sport exhaust
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01-15-2015, 04:38 PM
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#6
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Registered User
Join Date: Oct 2014
Location: California Central Coast
Posts: 1,476
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Quote:
Originally Posted by jsceash
You Have M96.20 1999 2.5 engine #24,614 0f 60,000
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Thanks for the reply. My car is a 98. Is a 99 engine possible?
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01-15-2015, 04:52 PM
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#7
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Registered User
Join Date: Aug 2009
Posts: 1,466
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I can't answer that. 2065W***** Would have be a 1998. I would suspect it was replaced at some point.
__________________
2003 Black 986. modified for Advanced level HPDE and open track days.
* 3.6L LN block, 06 heads, Carrillo H rods, IDP with 987 intake, Oil mods, LN IMS. * Spec II Clutch, 3.2L S Spec P-P FW. * D2 shocks, GT3 arms & and links, Spacers front and rear * Weight reduced, No carpet, AC deleted, Remote PS pump, PS pump deleted. Recaro Pole position seats, Brey crouse ext. 5 point harness, NHP sport exhaust
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