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Message: Re: Be careful...
Changed By: tonyd
Change Date: March 06, 2015 04:40PM
Re: Be careful...
Change Date: March 06, 2015 04:40PM
Re: Be careful...
Jm ,thanks for your concern.
Monkeying ? I'm Mech Eng.You?
The DME will function much better without 'reading' corrupted data caused by the oil contamination in the Intake. Detonation is the eventual consequence because the DME will retard the spark excessively to compensate for the oily mixture.The presence of the oil depresses the effective RON/octane.This is a common problem in forced induction also.
The fumes are not vented any way other than the Dr. intended. We are just removing excess oil that occurs when the AOS begins to fail.Smog Test results would improve especially for HC.
The risk of carbon build up in a nice newly rebuilt engine is unacceptable.
For the Boxster,the catch can is best fitted in the trunk ,so it is easy to check.
The main challenge is the fittings. The lines are very large diameter - approx. 1-1/4" so standard catch cans are useless. Probably need (?) -20AN 90 degree bulkhead AN833-20 (mocal). Need a totally sealed system if it is in the trunk! Any suggestions about fittings?
I speculate that this catch can mod. is ideal when combined with Pedro's Deep Sump and horizontal baffle. Why? - because some of the AOS failures seem to be associated with over-filling the sump and Track use. With a deep sump+baffle(correctly located!) there is no need to worry about running with an oil level between "Min" and 1/2 full. The pickup has an extra 2 qts of oil to 'feed' from and is submerged at all times(including Track & turn 17 at Sebring). So I am hoping Pedro will chime in and tell us what he has done- if anything.
It may be that simply running the oil level between Min. & 1/2 full in the Deep Sump is all we need to minimize intake oil contamination? If so ,that is another reason to install Pedro's Deep Sump kit.I did.
Monkeying ? I'm Mech Eng.You?
The DME will function much better without 'reading' corrupted data caused by the oil contamination in the Intake. Detonation is the eventual consequence because the DME will retard the spark excessively to compensate for the oily mixture.The presence of the oil depresses the effective RON/octane.This is a common problem in forced induction also.
The fumes are not vented any way other than the Dr. intended. We are just removing excess oil that occurs when the AOS begins to fail.Smog Test results would improve especially for HC.
The risk of carbon build up in a nice newly rebuilt engine is unacceptable.
For the Boxster,the catch can is best fitted in the trunk ,so it is easy to check.
The main challenge is the fittings. The lines are very large diameter - approx. 1-1/4" so standard catch cans are useless. Probably need (?) -20AN 90 degree bulkhead AN833-20 (mocal). Need a totally sealed system if it is in the trunk! Any suggestions about fittings?
I speculate that this catch can mod. is ideal when combined with Pedro's Deep Sump and horizontal baffle. Why? - because some of the AOS failures seem to be associated with over-filling the sump and Track use. With a deep sump+baffle(correctly located!) there is no need to worry about running with an oil level between "Min" and 1/2 full. The pickup has an extra 2 qts of oil to 'feed' from and is submerged at all times(including Track & turn 17 at Sebring). So I am hoping Pedro will chime in and tell us what he has done- if anything.
It may be that simply running the oil level between Min. & 1/2 full in the Deep Sump is all we need to minimize intake oil contamination? If so ,that is another reason to install Pedro's Deep Sump kit.I did.
Original Message
Author: tonydDate: March 06, 2015 04:39PM
Re: Be careful...
Jm ,thanks for your concern.
The DME will function much better without 'reading' corrupted data caused by the oil contamination in the Intake. Detonation is the eventual consequence because the DME will retard the spark excessively to compensate for the oily mixture.The presence of the oil depresses the effective RON/octane.This is a common problem in forced induction also.
The fumes are not vented any way other than the Dr. intended. We are just removing excess oil that occurs when the AOS begins to fail.Smog Test results would improve especially for HC.
The risk of carbon build up in a nice newly rebuilt engine is unacceptable.
For the Boxster,the catch can is best fitted in the trunk ,so it is easy to check.
The main challenge is the fittings. The lines are very large diameter - approx. 1-1/4" so standard catch cans are useless. Probably need (?) -20AN 90 degree bulkhead AN833-20 (mocal). Need a totally sealed system if it is in the trunk! Any suggestions about fittings?
I speculate that this catch can mod. is ideal when combined with Pedro's Deep Sump and horizontal baffle. Why? - because some of the AOS failures seem to be associated with over-filling the sump and Track use. With a deep sump+baffle(correctly located!) there is no need to worry about running with an oil level between "Min" and 1/2 full. The pickup has an extra 2 qts of oil to 'feed' from and is submerged at all times(including Track & turn 17 at Sebring). So I am hoping Pedro will chime in and tell us what he has done- if anything.
It may be that simply running the oil level between Min. & 1/2 full in the Deep Sump is all we need to minimize intake oil contamination? If so ,that is another reason to install Pedro's Deep Sump kit.I did.
The DME will function much better without 'reading' corrupted data caused by the oil contamination in the Intake. Detonation is the eventual consequence because the DME will retard the spark excessively to compensate for the oily mixture.The presence of the oil depresses the effective RON/octane.This is a common problem in forced induction also.
The fumes are not vented any way other than the Dr. intended. We are just removing excess oil that occurs when the AOS begins to fail.Smog Test results would improve especially for HC.
The risk of carbon build up in a nice newly rebuilt engine is unacceptable.
For the Boxster,the catch can is best fitted in the trunk ,so it is easy to check.
The main challenge is the fittings. The lines are very large diameter - approx. 1-1/4" so standard catch cans are useless. Probably need (?) -20AN 90 degree bulkhead AN833-20 (mocal). Need a totally sealed system if it is in the trunk! Any suggestions about fittings?
I speculate that this catch can mod. is ideal when combined with Pedro's Deep Sump and horizontal baffle. Why? - because some of the AOS failures seem to be associated with over-filling the sump and Track use. With a deep sump+baffle(correctly located!) there is no need to worry about running with an oil level between "Min" and 1/2 full. The pickup has an extra 2 qts of oil to 'feed' from and is submerged at all times(including Track & turn 17 at Sebring). So I am hoping Pedro will chime in and tell us what he has done- if anything.
It may be that simply running the oil level between Min. & 1/2 full in the Deep Sump is all we need to minimize intake oil contamination? If so ,that is another reason to install Pedro's Deep Sump kit.I did.