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#1
12-23-2011, 12:49 PM
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What would cause this????
Any idea's???
Calvin Hill Hill Performance / Mondello Tech Center 708-250-7420 |
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#2
12-23-2011, 01:08 PM
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Dropped before installation and took a while for engine vibrations to knock the piece out?
__________________
__________________________________________ "How I learned to stop worrying and love the OHC Pontiac L6"  The Silver Buick- '77 Skylark coupe w/455, SPX, MegaSquirt 3 & TKO-600 (Drag Week 2011, 2012 & 2015!) 1969 Firebird with a turbo'd Pontiac L6 controlled by a MegaSquirt 3 and backed with a microsquirt controlled 4L60e and 4.56 gears! (Drag Week 2018!) |
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#3
12-23-2011, 01:24 PM
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Squirrels?
__________________
70 Formula Old engine: 467 HO headed 6.79 1/8th mile @ 101.87 no N20. 1.44 60ft 6.23 1/8th @ 111.83 w/nitrous 1.37 60ft New Engine IAII 535 Calvin Hill Eheads Few test passes made. Tore it up. Just got it fixed. |
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#4
12-23-2011, 01:30 PM
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Nitrous explosion
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#5
12-23-2011, 01:39 PM
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No damage to anything else?
Hit with a ratchet handle.
__________________
If you cant drive from gas pump to gas pump across the map, its not a street car. http://s207.photobucket.com/albums/b...hop/?start=100 |
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#6
12-23-2011, 01:56 PM
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Had a very similar thing happen in the 80's (man I am getting old). It was an Accel cap. Never found out what caused it, never saw it again until now. I just chalked it up to a manufacturing flaw that showed up after vibrating on the engine.
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#7
12-23-2011, 02:03 PM
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My CSI skills say it happened al at once - hense the clean break all around. Did the engine ever get a lot of fuel in the grank case ? the fumes could hace gotten up there and the touched off by the spark ?
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#8
12-23-2011, 02:06 PM
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Did ya get mad at it Calvin...?...
 Merry Christmas bud... 
__________________
 ECM member. 2008 Outlaw Pontiac Drag Series Champion MANDRA Do it now fool! Life is short. 69 Grand Prix/3163lbs / IAII 535 w/ Tiger heads by Gaydosh....9.35@ 144 so far..  through mufflers. 1.26 60'. Going back to track with pump gas engine.... My 60 Ventura retired to street/strip duty.. |
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#9
12-23-2011, 02:36 PM
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I have seen a few caps break like that but it was usually in a street application and a non-vented cap with spring clips, like a Mopar. In those cases it was fuel vapor making it's way into the dist. from a super rich condition or a non-working PCV. If it was not struck and broken as mentioned, I would check crankcase ventilation. I usually drill several vent holes in all my race caps to prevent this and any ozone build-up.
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#10
12-23-2011, 05:28 PM
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Had an HEI rotor "explode" and take the cap out. Lucky it was in the garage.
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#11
12-23-2011, 05:46 PM
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Poor job of checking rotor phasing!! Merry Christmas Calvin!!!
__________________
GT37 3625lbs..Fastest bench seat, column shift, all steel,no power adders car at Norwalk 1.35 w/29.5x10.5x15 6.42 @ 109 10.09 @ 133 |
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#12
12-23-2011, 05:46 PM
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Quote:
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#13
12-23-2011, 06:53 PM
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Operator error........
__________________
65 Lemans Street Car - 521, T400, 3.70 9". 10.13 @ 135. 3770 lbs. Drag Week ‘14, ‘15, ‘17 63 Lemans Race Car- 8.81 @ 151, 5.60 @ 123(SOLD) 67 Bonneville ragtop 74 Firebird - 455, e heads, TK0600 in process |
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#14
12-23-2011, 07:42 PM
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Automatic self venting cap.
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#15
12-23-2011, 07:59 PM
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Quote:
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#16
12-23-2011, 08:19 PM
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bad motor mounts!
Happened to me... Although your failure looks different... |
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#17
12-23-2011, 08:30 PM
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Sure case of driver abuse..... No doubt about it!!!!
Calvin, you can't make it go faster that way , I already told you I did not think inproving air speed in the cap would help.. LoL.
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#18
12-23-2011, 09:32 PM
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Quote:
Hill Performance / Mondello Tech Center 708-250-7420 |
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#19
12-23-2011, 09:55 PM
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Quote:
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#20
12-23-2011, 10:12 PM
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Quote:
__________________
65 Lemans Street Car - 521, T400, 3.70 9". 10.13 @ 135. 3770 lbs. Drag Week ‘14, ‘15, ‘17 63 Lemans Race Car- 8.81 @ 151, 5.60 @ 123(SOLD) 67 Bonneville ragtop 74 Firebird - 455, e heads, TK0600 in process |
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