09-11-2018, 03:32 AM
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#1
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Registered User
Join Date: Aug 2015
Location: Callahan, FL
Posts: 462
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Ready to start after rebuild
My motor replacement took such a long time (3 months) due to being in the rainy season and work, I am finally ready to try and start it (2.5L) for the first time. Full of fresh oil, replaced transmission fluid, brakes bled, master cylinder replaced.
Only issue I currently know of is my post cat O2 sensors are not connected since the replacement cats do not have a bung to insert the sensor. Will this be a problem with startup? My intentions are once the car starts take it to a shop that will install the bungs in the proper location.
Are there any tidbits that will save me a lot of aggravation and frustration after I turn the key for the first time?
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99 Boxster base
1966 912 3 gauge
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09-11-2018, 08:33 AM
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#2
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Porsche "Purist"
Join Date: Aug 2003
Location: Wisconsin
Posts: 2,123
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No issue with startup. Have a fire extinguisher handy and a plan to get your car outside if necessary.
__________________
1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster original owner. I installed used motor at 89k.
1987 924S. 2002 996TT. PST-2
Owned and repaired Porsches since 1974. Porsche: It's not driving, it's therapy.
Last edited by Paul; 09-11-2018 at 08:41 AM.
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09-12-2018, 08:57 AM
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#3
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Registered User
Join Date: Aug 2015
Location: Callahan, FL
Posts: 462
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Quote:
Originally Posted by Paul
No issue with startup. Have a fire extinguisher handy and a plan to get your car outside if necessary.
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This is all the advise and pointers the forum could come up with? After the amount of time, effort and money I put into this, I am hoping not to screw anything up by not doing a pre-start up check of some sort. PLEASE ADVISE!!!
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99 Boxster base
1966 912 3 gauge
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09-12-2018, 10:20 AM
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#4
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Registered User
Join Date: Dec 2009
Location: Orange County, CA
Posts: 1,994
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Quote:
Originally Posted by flouese
This is all the advise and pointers the forum could come up with? After the amount of time, effort and money I put into this, I am hoping not to screw anything up by not doing a pre-start up check of some sort. PLEASE ADVISE!!!
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Ok, what about following Jake Raby recommendations..?
He cranks the engine right before starts running and shuts it off immediately, this is to allow the engine to build oil pressure, and repeats this procedure a few times until the internal components are properly lubed, then starts the engine and lets it warm properly,
it makes a lot of sense.
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09-12-2018, 11:05 AM
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#5
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Registered User
Join Date: Aug 2015
Location: Callahan, FL
Posts: 462
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Quote:
Originally Posted by Gilles
Ok, what about following Jake Raby recommendations..?
He cranks the engine right before starts running and shuts it off immediately, this is to allow the engine to build oil pressure, and repeats this procedure a few times until the internal components are properly lubed, then starts the engine and lets it warm properly,
it makes a lot of sense.
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Thanks. This is what I am looking for.
__________________
99 Boxster base
1966 912 3 gauge
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09-12-2018, 12:07 PM
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#6
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Registered User
Join Date: Jun 2018
Location: SF Bay Area, California
Posts: 33
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Quote:
Originally Posted by Gilles
Ok, what about following Jake Raby recommendations..?
He cranks the engine right before starts running and shuts it off immediately, this is to allow the engine to build oil pressure, and repeats this procedure a few times until the internal components are properly lubed, then starts the engine and lets it warm properly,
it makes a lot of sense.
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...and then have a fire extinguisher ready... 
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09-12-2018, 02:27 PM
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#7
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Porsche "Purist"
Join Date: Aug 2003
Location: Wisconsin
Posts: 2,123
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Since it is a used motor no break in is needed, double check all your connections and fluid levels. Open the coolant tank vent. With the engine cover off, have an assistant standing by with a fire extinguisher and have him watch for leaks (especially fuel). Shutdown if anything is leaking, no oil pressure, or excessive noise.
__________________
1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster original owner. I installed used motor at 89k.
1987 924S. 2002 996TT. PST-2
Owned and repaired Porsches since 1974. Porsche: It's not driving, it's therapy.
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09-12-2018, 02:34 PM
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#8
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Motorist & Coffee Drinker
Join Date: Jul 2014
Location: Oklahoma
Posts: 3,942
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Lastly, have a spectator standing by recording it on video and capturing your big grin. The first start only happens once.
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I am not an attorney, mechanic, or member of the clergy. Following any advice given in my posts is done at your own peril.
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09-12-2018, 08:43 PM
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#9
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Registered User
Join Date: Mar 2016
Location: Spain
Posts: 996
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Prayer to engine god! After double checking there is oil in the engine! Lol good luck
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2000 Boxster S Ocean Blue Metalic
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09-13-2018, 03:25 AM
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#10
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Registered User
Join Date: Aug 2015
Location: Callahan, FL
Posts: 462
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Appreciate the assist. Saturday will be the day... I will either be smiling or saying a whole bunch of Sailor words I haven't used since I retired from the Navy!
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99 Boxster base
1966 912 3 gauge
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09-13-2018, 03:45 AM
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#11
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Multi-Boxer Driver
Join Date: Nov 2010
Location: Orange Park, FL
Posts: 1,430
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Quote:
Originally Posted by flouese
I will either be smiling or saying a whole bunch of Sailor words I haven't used since I retired from the Navy!
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Why not both?   Good luck!
__________________
-Chris
2004 Porsche Boxster 2.7 (gone  )
2004 Porsche 911 C4S Cab
1991 Porsche 911 C2 Targa 3.6
2017 Subaru Outback 3.6R
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09-13-2018, 03:41 PM
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#12
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Registered User
Join Date: Aug 2015
Location: Callahan, FL
Posts: 462
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Quote:
Originally Posted by Deserion
Why not both? Good luck! |
You can always swing by Callahan and enjoy the show!
__________________
99 Boxster base
1966 912 3 gauge
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09-16-2018, 07:51 AM
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#13
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Registered User
Join Date: Aug 2015
Location: Callahan, FL
Posts: 462
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UPDATE: Engine started up fine, runs smooth and sounds good and no CEL even with the post cat O2 sensors not connected. However, Have a coolant leak from the "3-way hose". Problem is the overflow hose starts draining at a small stream at just above normal operating temps (slightly to the right of the 8 in 180). Any thoughts?
__________________
99 Boxster base
1966 912 3 gauge
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