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Old 02-04-2016   #1
Jitse
 
Join Date: Aug 2013
Location: Holland
Posts: 80
Default Crank plugs

Today I started with the rebuild of my 368.
Recieved last week the block, crank and heads back from the machineshop.

I am not sure if there needs to be a freeze plug in the front, behind the damper bolt? Or is the damper bolt keeping the oil pressure....

I was looking already in many topics here with the search option but could not find a clear anwer.
The crank is polished, they removed the treaded plugs and the freeze plugs in the walls where not removed. Installed new treaded plugs myself after checking for any more dirt.
Machineshop cleaned crank ultrasoon.

Last edited by Jitse; 02-04-2016 at 04:13 PM. Reason: Add extra info
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Old 02-04-2016   #2
GOLDCYLON
 
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Default Re: Crank plugs

Quote:
Originally Posted by Jitse View Post
Today I started with the rebuild of my 368.
Recieved last week the block, crank and heads back from the machineshop.

I am not sure if there needs to be a freeze plug in the front, behind the damper bolt? Or is the damper bolt keeping the oil pressure....

I was looking already in many topics here with the search option but could not find a clear anwer.
The crank is polished, they removed the treaded plugs and the freeze plugs in the walls where not removed. Installed new treaded plugs myself after checking for any more dirt.
Machineshop cleaned crank ultrasoon.
Get the expansion plug style plugs welded in at a minimum

http://www.zr1.net/forum/showthread....ght=crank+plug

http://www.zr1.net/forum/showthread....&highlight=380
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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

Last edited by GOLDCYLON; 02-04-2016 at 05:23 PM.
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Old 02-05-2016   #3
Jitse
 
Join Date: Aug 2013
Location: Holland
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Default Re: Crank plugs

Thats something what can be done as extra security , a tig weld on those expansion plugs.

This crank is not regrind and not heated up like the regrind (380) from yours and Secondchance.... Or maybe they installed a mismatching set of freeze plugs in them that time.
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Old 02-05-2016   #4
Jagdpanzer
 
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Default Re: Crank plugs

The damper retainer bolt is installed in the crank shaft with loctite which seals the threads from leaking oil. I've done a few and so far none have leaked. Be sure to clean the bolt and thread bore and aply loctite liberally on the first half of the bolt threads.
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Old 02-05-2016   #5
GOLDCYLON
 
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Default Re: Crank plugs

Quote:
Originally Posted by Jitse View Post
Thats something what can be done as extra security , a tig weld on those expansion plugs.
That's my recommendation REGARDLESS of the build. However I suspect the rework on the crank was the full reason the OEM method was not satisfactory. Too many $$$ these days in the rebuild to not do it IMHO.
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GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's)

GOLDCYLON - 11 CTS-V


Arizona State Director




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 02-05-2016   #6
Jitse
 
Join Date: Aug 2013
Location: Holland
Posts: 80
Default Re: Crank plugs

Thanks for the good and helpfull replies
Today I installed the eagle rods on the Diamond pistons and started with file fit the rings, time consuming job. But I enjoy it.
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