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Failed oil pump drive


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roscobbc

Committee Member

Fri 21 Sep 18 15:40

Failed oil pump drive


Image
I don't know why it is but when I get 'issues' with the '68 they are never really that straightforward. And this is most certainly one of them.
The story.
Essex Regions annual cruise to the Museum of Power American Car and Hot Rod Show to the old waterworks pumping station at Ulting near Maldon, Essex.
A great place to visit if you like 'big' mechanical stuff (and I mean really BIG!)
Not long after a friendly 'joust' on the dual carriageway to help confirm which of us had best performance (not me this time) with fellow member Tony Rudd in his 'huffed' C5Z06 I had a total loss of oil pressure. Later removal of the distributor showed that the oil pump drive shaft that locates in the base of the distributor had completely sheared (and the reason for zero oil pressure)
Now I can hope that simply replacing the oil pump drive shaft may be all that is required - and presuming there has been no other damage to the engine its would be a bit of a pain to do but simple enough. However I really need to find the root cause of the 'issue'. Perhaps when I remove the oil pan the reason for the oil pressure loss will be apparent (seized oil pump/detached pick up tube etc) but it's a very rare thing to happen. Fellow big block Vettehead and one time Essex member Pete Knodt had the oil pump pick-up tube fall off the oil pump on his engine - a very rare occurrence and one that usually results in significantly reduced pressure, but not total loss (racer guys usually weld the pick-up tube to the oil pump) The saga no doubt will continue... Scratchchin



Last edited by roscobbc on Fri 21 Sep 18 15:57; edited 2 times in total. [19 %]
--------------------
CCCUK Chairman
'68 coupe - 4 speed - 3.08 - 489 cu in - 570 bhp @ 5850 rpm - 606 ft/lbs torque (821 Newton Metres) @ 3850 rpm
Image

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kentvette

Club Member

Fri 21 Sep 18 16:45

Re: Failed oil pump drive


Cor blimey! Who'd have a "hot-rodded" Vette, eh? Very Happy

Hope it is in fact a simple issue.... Mind you,even dropping the sump doesn't sound that simple to me! Rolling Eyes


--------------------
Stephen J Irons
CCCUK Lifetime Member
Corvette Club France
Corvettes of Southern California
NCM Family Member
Stephen & June's Web Site
Red Corvettes Have More Fun!

Apple IS Genisys!
The "Born-Again Greenies" are killing the planet! It's time to wake up and smell the rain-forest burning!

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Vetteheadtony

Club Member

Fri 21 Sep 18 21:54

Re: Failed oil pump drive


What do you mean, “This time”!!


--------------------
Vetteheadtony
2004 Z06 lemans edition pro charged
613 BHP
Black C6 ZR1 wheels
FECKING FAST!!!

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roscobbc

Committee Member

Fri 21 Sep 18 22:19

Re: Failed oil pump drive


Vetteheadtony wrote (View Post):What do you mean, “This time”!!

That was specially for you Tony - I guessed you'd 'bite' Rofl


--------------------
CCCUK Chairman
'68 coupe - 4 speed - 3.08 - 489 cu in - 570 bhp @ 5850 rpm - 606 ft/lbs torque (821 Newton Metres) @ 3850 rpm
Image

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Vetteheadtony

Club Member

Sat 22 Sep 18 11:59

Re: Failed oil pump drive


You know me so well Rosco! And I new you wanted me to bite😂😂😂


--------------------
Vetteheadtony
2004 Z06 lemans edition pro charged
613 BHP
Black C6 ZR1 wheels
FECKING FAST!!!

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Forrest Gump

Regional Rep

Sat 22 Sep 18 15:58

Re: Failed oil pump drive


Vetteheadtony wrote (View Post):What do you mean, “This time”!!

Tony, you've got to take into account Ross's failing oil pressure would have meant he was several hundred horsepower down....He wouldn't have wanted to mention that!!!


--------------------
Blue '75

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L88

Club Member

Sat 22 Sep 18 18:29

Re: Failed oil pump drive


Have you dropped the sump yet Ross?

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roscobbc

Committee Member

Sat 22 Sep 18 18:55

Re: Failed oil pump drive


No.......


--------------------
CCCUK Chairman
'68 coupe - 4 speed - 3.08 - 489 cu in - 570 bhp @ 5850 rpm - 606 ft/lbs torque (821 Newton Metres) @ 3850 rpm
Image

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L88

Club Member

Sat 22 Sep 18 19:08

Re: Failed oil pump drive


Slow coach. if that were me I would be itching to see inside.

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roscobbc

Committee Member

Sat 22 Sep 18 19:41

Re: Failed oil pump drive


'Itching' is not the word that first comes to mind Frank..............'Dreading', 'Anxious', 'Hopeful', 'Lucky' are words perhaps more appropriate Scratchchin Readit


--------------------
CCCUK Chairman
'68 coupe - 4 speed - 3.08 - 489 cu in - 570 bhp @ 5850 rpm - 606 ft/lbs torque (821 Newton Metres) @ 3850 rpm
Image

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