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Re: Sometimes racecars aren't fun
[Re: tboomer]
#2656838
05/19/19 11:35 AM
05/19/19 11:35 AM
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Joined: Jan 2003
Posts: 14,492
So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,492
So. Burlington, Vt.
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My bet is that it is the head. But we'll see. I totally get where you’re coming from....... but you have a Megablock, right? Anytime there’s a MP part involved......... it always suspect imo. I’m thinking....... head? Block?........ that’s a “pick em”. I doubt it’s the gasket....... but you might luck out.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
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Re: Sometimes racecars aren't fun
[Re: fast68plymouth]
#2657031
05/19/19 09:27 PM
05/19/19 09:27 PM
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Joined: Mar 2006
Posts: 9,815
MI, usa
dvw
OP
master
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OP
master
Joined: Mar 2006
Posts: 9,815
MI, usa
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My bet is that it is the head. But we'll see. I totally get where you’re coming from....... but you have a Megablock, right? Anytime there’s a MP part involved......... it always suspect imo. I’m thinking....... head? Block?........ that’s a “pick em”. I doubt it’s the gasket....... but you might luck out. Yes, it's a Mega Block. It is the later "supposed good style". Probably over 700 passes on it between me and Jim when he ran it. Doug
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Re: Sometimes racecars aren't fun
[Re: dvw]
#2657139
05/20/19 08:45 AM
05/20/19 08:45 AM
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Joined: Jan 2003
Posts: 13,351
Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,351
Marion, South Carolina [><]
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Wow, that sucks to drive so far to have to turn around and come home w/o making a run! Here's hoping for a easy fix!
Glad you found it before making a pass though...be a shame for something to happen to that car!
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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Re: Sometimes racecars aren't fun
[Re: dvw]
#2657155
05/20/19 09:25 AM
05/20/19 09:25 AM
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Joined: Jan 2003
Posts: 17,838
S.E. Michigan
ZIPPY
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,838
S.E. Michigan
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Oh crap. Hope the damage is minimal.
Rich H.
Esse Quam Videri
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Re: Sometimes racecars aren't fun
[Re: dvw]
#2659850
05/28/19 07:36 AM
05/28/19 07:36 AM
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Joined: Aug 2003
Posts: 4,671
On the parachute mount
n20mstr
master
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master
Joined: Aug 2003
Posts: 4,671
On the parachute mount
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Got it apart yesterday. Very little water in the pan, maybe 1-2 oz. It hadn't been run so it didn't mix with the oil. Checking the torque on the bolts they all were loose. I've never checked torque on disassembly before. But never had an issue either. Every stud I checked the moved 15 degrees at least. Pulled both heads as they both were loose. The was some pitting around the water jacket holes last time it was apart. Dropped the heads off at my Machinist. #6 chamber will get pressure checked. Going to weld up the pits and resurface both heads. The deck height on that rod is with-in .001" of install. Ill talk to Tom Molnar today about the rod for possible damage due to hydro-lock. Also going to call Mickey at Cometic . I used a different style torque wrench last time. Maybe I missed the setting?
Doug the Cometics are almost the same trouble as a copper gasket...lol A lot of big name engine builders now are silicone the water jacket holes, some even the whole gasket ! Personally ive only had trouble sealing the upper part on my cometics, and that's because of the Indy block shape of the passages. A little silicone seemed to seal it up. but you can clearly see the passage is right on the embossment. On my sons smallblock, every water hole got a smear of red silicone. No leaks so far...but fingers crossed. At one point I was draining my water every time I put the car back in the trailer to make sure there would be no water leaks...lol
....BAD A$$ STREET CAR.....
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Re: Sometimes racecars aren't fun
[Re: dvw]
#2660731
05/30/19 07:46 PM
05/30/19 07:46 PM
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Joined: Feb 2005
Posts: 20,151
PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,151
PA.
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Update; pinhole in the floor of the #6 intake port. That explains very little coolant in the oil vs the large coolant loss. Most went out the header. We'll get it welded up and back together.
Doug I glad to hear it wasn’t more serious. Are you going to make it to Pittsburgh this year
1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27
Livin and lovin life one day at a time
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Re: Sometimes racecars aren't fun
[Re: dvw]
#2660742
05/30/19 08:24 PM
05/30/19 08:24 PM
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Joined: Dec 2013
Posts: 4,663
Wichita
GY3
master
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master
Joined: Dec 2013
Posts: 4,663
Wichita
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Update; pinhole in the floor of the #6 intake port. That explains very little coolant in the oil vs the large coolant loss. Most went out the header. We'll get it welded up and back together.
Doug Cool! Glad it wasn't catastrophic!
'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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