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Old 04-25-2013   #1
Funracer
 
Join Date: Oct 2011
Location: Shalimar, FL
Posts: 192
Default Two holer?

Finally finished cleaning out the worlds biggest under plenum mouse house.

Two drain holes under the starter?



When I drowned the starter in 1993 the dealer replaced it under warranty
(more or less). While they were in there and due to the cause of the drowned starter being a plugged drain, he said there was a service bulletin that would allow them to drill another, larger drain hole next to the original hole.

"So, you want to drill a hole in the middle of my engine block?"
"Yes"
"Has your mech ever done this before?"
"No, but we have a template"
"Alrighty then"

You can see where he started the drill twice.

When we blew out the hole from the bottom with compressed air it (and mouse detritus) came out the larger hole.=D>
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Old 04-25-2013   #2
scottfab
 
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Location: Portland Oregon metro area (Washington side)
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Default Re: Two holer?

I had heard of this back in the 90s but have never seen it.
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Old 04-25-2013   #3
Funracer
 
Join Date: Oct 2011
Location: Shalimar, FL
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Default Re: Two holer?

Not sure what is happening with the smaller hole now. I thought about
plugging it but see no harm in leaving it open.
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Old 04-25-2013   #4
GOLDCYLON
 
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Default Re: Two holer?

Did they install another drain tube behind the block? Im guessing not? GC
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91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat

90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat

11 RED/GREY CTS-V
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Old 04-26-2013   #5
Funracer
 
Join Date: Oct 2011
Location: Shalimar, FL
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Default Re: Two holer?

Quote:
Originally Posted by GOLDCYLON View Post
Did they install another drain tube behind the block? Im guessing not? GC
I did not see one but I may take another look out of curiosity.
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Old 04-26-2013   #6
grahambehan
 
Join Date: Feb 2013
Location: New Concord Kentucky
Posts: 186
Default Re: Two holer?

Quote:
Originally Posted by GOLDCYLON View Post
Did they install another drain tube behind the block? Im guessing not? GC
You are guessing correctly. As part of the "service fix" there was no additional drain tube.

Graham.
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Old 04-26-2013   #7
Bob Eyres
 
Join Date: Jul 2005
Location: Jupiter, Fl.
Posts: 813
Default Re: Two holer?

I've often wondered why one of our famously anal retentive ZR-1 brothers has not come up with a method of connecting a source of suction, (shop vac?), to the drain tube somehow so that you could wash your engine without drowning the starter.
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Old 04-26-2013   #8
GOLDCYLON
 
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Location: Peoria, AZ
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Default Re: Two holer?

Quote:
Originally Posted by Bob Eyres View Post
I've often wondered why one of our famously anal retentive ZR-1 brothers has not come up with a method of connecting a source of suction, (shop vac?), to the drain tube somehow so that you could wash your engine without drowning the starter.
I don't ever seeing that happen. Don't forget the coil base, coil pack and the DIS module are all in the same work space along with the starter. Often the drain tube opening is plugged with crap so trying to suck from the bottom won't get everything out. In short washing the motor is not a recommended procedure
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91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat

90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat

11 RED/GREY CTS-V
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Old 04-27-2013   #9
mbabbitt
 
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Location: Durham, NC
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Default Re: Two holer?

2 holer? Sounds similiar to setting Circle Zebra (air tight) in Olongapo.
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