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1 Attachment(s)
Intermediate Shaft and Bolt Weights (aka oil pump drive shaft or aux shaft)
Cam Bolt/Intermediate Shaft Weights
Cam/Intermediate Shaft Bolt and Washer = 77.65g
The bolt is M12 x 1.5 x 50mm
¼” Thick Washer – Beveled (Bellville?)
Washer O.D. 1.220” (about 30mm)
New Never Used Intermediate Shaft w/Key and Fuel Pump Lobe = 1175.45g/41.46oz/2.59lb
New Never Used Intermediate Shaft w/Key and center machined down to 0.775” =
1017.61g/35.89oz/2.24lb
Difference of:
157.84g/5.57oz/0.35lb after machining.
From the Hot Rod 2.2 Complete Review catalog, it says Koffel’s shaft with key weighs 2.5lbs before machining (which is what I got as well) and 1.5lbs after machining. It HAS to be gun drilled to save that much weight?
Used Intermediate Shaft without key but with Fuel Pump Lobe = 1173.45g
From the above, the key should weigh = 2.00g
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Re: Intermediate Shaft and Bolt Weights (aka oil pump drive shaft or aux shaft)
Subscribed :thumb:
Koeffel's still exists. Wonder if they kept any notes?
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Re: Intermediate Shaft and Bolt Weights (aka oil pump drive shaft or aux shaft)
I may be able to put my hands on one out of a Koeffel motor to verify if it is drilled....
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Re: Intermediate Shaft and Bolt Weights (aka oil pump drive shaft or aux shaft)
Crap, I didn't even think of that! I have a Koeffel motor. I never paid attention to see if there is a intermediate shaft in it or not! Doh!
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Re: Intermediate Shaft and Bolt Weights (aka oil pump drive shaft or aux shaft)
Quote:
Originally Posted by
Reeves
Crap, I didn't even think of that! I have a Koeffel motor. I never paid attention to see if there is a intermediate shaft in it or not! Doh!
So, did you check it yet?
how about now?
;)
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Re: Intermediate Shaft and Bolt Weights (aka oil pump drive shaft or aux shaft)
The one I can check out is at a buddies house so I wont be able to get to it for a few days. I have been dying to get that thing on a stand anyway and check it out lol. I know it has the intermediate shaft in it so we shall see:eyebrows:
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Re: Intermediate Shaft and Bolt Weights (aka oil pump drive shaft or aux shaft)
Quote:
Originally Posted by
BadAssPerformance
So, did you check it yet?
how about now?
;)
LMAO!!!!! :)
Guys from work and beer got in the way....
Quote:
Originally Posted by
CSX194
The one I can check out is at a buddies house so I wont be able to get to it for a few days. I have been dying to get that thing on a stand anyway and check it out lol. I know it has the intermediate shaft in it so we shall see:eyebrows:
Take lots'o'pictures!
:needpics1:
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Re: Intermediate Shaft and Bolt Weights (aka oil pump drive shaft or aux shaft)
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Re: Intermediate Shaft and Bolt Weights (aka oil pump drive shaft or aux shaft)
Quote:
Originally Posted by
Reeves
LMAO!!!!! :)
Guys from work and beer got in the way....
Take lots'o'pictures!
:needpics1:
You got it. I will try to find the build sheet too.
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Re: Intermediate Shaft and Bolt Weights (aka oil pump drive shaft or aux shaft)
Quote:
Originally Posted by
Reeves
Crap, I didn't even think of that! I have a Koeffel motor. I never paid attention to see if there is a intermediate shaft in it or not! Doh!
OK, so this weekend I looked at the motor and it DOES have an intermediate shaft in it. Uh, that's about as far as I got. Maybe I'll try to pull it out tonight.
Quote:
Originally Posted by
CSX194
The one I can check out is at a buddies house so I wont be able to get to it for a few days. I have been dying to get that thing on a stand anyway and check it out lol. I know it has the intermediate shaft in it so we shall see:eyebrows:
Any luck yet?
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Re: Intermediate Shaft and Bolt Weights (aka oil pump drive shaft or aux shaft)
Blast from the past!
What was the conclusion?
Mike
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Re: Intermediate Shaft and Bolt Weights (aka oil pump drive shaft or aux shaft)
Never pulled it out yet. Kind of forgot until now. Thanks!
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Re: Intermediate Shaft and Bolt Weights (aka oil pump drive shaft or aux shaft)
How much benefit is there in removing 40% of the material (strength) from that shaft? Unless you're running a dry sump system (Koffel probably did) that thing has to turn the oil pump which could be using 5 or more horsepower and putting that cut down cast iron shaft at risk.
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Re: Intermediate Shaft and Bolt Weights (aka oil pump drive shaft or aux shaft)
That settles it, God needs you to do this now, it was totally by accident that I stumbled upon this thread ... or was it divine intervention?
Mike
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Re: Intermediate Shaft and Bolt Weights (aka oil pump drive shaft or aux shaft)
Quote:
Originally Posted by
zin
That settles it, God needs you to do this now, it was totally by accident that I stumbled upon this thread ... or was it divine intervention?
Mike
I would, except I'm in Schentactadydakfdjalfda, New York.
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Re: Intermediate Shaft and Bolt Weights (aka oil pump drive shaft or aux shaft)
Now? :eyebrows:
Mock, Warren's is cut down, drilled and still seems to work fine.
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Re: Intermediate Shaft and Bolt Weights (aka oil pump drive shaft or aux shaft)
Any weight removed from a car/engine is a good thing...
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Re: Intermediate Shaft and Bolt Weights (aka oil pump drive shaft or aux shaft)
Ok in the article caption it states the center shaft in the picture is "rifle-drilled" but was too unreliable for the IMSA cars. The shaft in the right hand picture appears to be the same shaft.
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Re: Intermediate Shaft and Bolt Weights (aka oil pump drive shaft or aux shaft)
digging thru my piles of crap, I discovered I have one of those shafts.
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Re: Intermediate Shaft and Bolt Weights (aka oil pump drive shaft or aux shaft)
Quote:
Originally Posted by
moparman76_69
Ok in the article caption it states the center shaft in the picture is "rifle-drilled" but was too unreliable for the IMSA cars. The shaft in the right hand picture appears to be the same shaft.
I think they said it twisted which I could see, high rpm for long period's of time using thicker oil.
Quote:
Originally Posted by
22mopar
digging thru my piles of crap, I discovered I have one of those shafts.
Pics!!
