Do I need a 'windage tray'?
Drifting
Joined: Nov 2002
Posts: 1,685
Likes: 199
From: Loveland, CO
I just ordered a bolt from GMParts Direct. GM part no. 3902885, about $12.
I had been trying to figure out how to torque this long stud down to the 65-70 lbs. required. None of my longer 5/8 sockets would fit over the nub on the stud. Guessing torque with a box end wrench didn't seem like an elegant solution. Had the brain-fart to just attach the upper nut that holds the windage tray onto the stud, and torque away. Guess what twisted off before reaching required torque. Hence need for another stud.
How do you guys torque the long stud down? Long spark plug socket, etc., or crescent wrench?
Ralph
I had been trying to figure out how to torque this long stud down to the 65-70 lbs. required. None of my longer 5/8 sockets would fit over the nub on the stud. Guessing torque with a box end wrench didn't seem like an elegant solution. Had the brain-fart to just attach the upper nut that holds the windage tray onto the stud, and torque away. Guess what twisted off before reaching required torque. Hence need for another stud.
How do you guys torque the long stud down? Long spark plug socket, etc., or crescent wrench?
Ralph
Race Director
Joined: Jan 2000
Posts: 13,014
Likes: 2,257
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
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2017 C2 of Year Finalist
My Snap On deep sockets work fine.
JIM
JIM
Race Director
Joined: Jan 2000
Posts: 13,014
Likes: 2,257
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
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2017 C2 of Year Finalist
HMmnnn...OK....but not on my stuff.....
Are you sure he said to TQ the main cap stud with a crescent wrench?? If nothing else use a crowsfoot and do the math for the slight added length.
JIM
Race Director
Joined: Jan 2000
Posts: 13,014
Likes: 2,257
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
OK...now I feel better. I've done some drinking with him and NEVER seen him THAT far gone!!
JIM
JIM
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Tech Contributor
Joined: Aug 1999
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From: At my Bar drinking and wrenching in Lafayette Colorado
Yeah, I have an entire toolbox drawing full of various sizes Crescent wrenches, in both standard and metric. I can assemble en entire engine with nothing but those wrenches and a screwdriver...
On the windage tray issue:
I've done some dyno testing on engines, with and without windage tray (on the same engine). The dyno results are simply shocking, especially at rpm above 5000. A good windage tray will actually improve top-end horsepower by 15-20 hp over no windage tray or a bad windage tray. You can actually "see" it on the dyno printout as oil pressure starts fluctuating from the windage whipping up the oil and power taking a dip at the same moment the pressure starts to fluctuate. Run a windage tray - it's super-cheap horsepower!
Lars
On the windage tray issue:
I've done some dyno testing on engines, with and without windage tray (on the same engine). The dyno results are simply shocking, especially at rpm above 5000. A good windage tray will actually improve top-end horsepower by 15-20 hp over no windage tray or a bad windage tray. You can actually "see" it on the dyno printout as oil pressure starts fluctuating from the windage whipping up the oil and power taking a dip at the same moment the pressure starts to fluctuate. Run a windage tray - it's super-cheap horsepower!
Lars
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
I just ordered a bolt from GMParts Direct. GM part no. 3902885, about $12.
I had been trying to figure out how to torque this long stud down to the 65-70 lbs. required. None of my longer 5/8 sockets would fit over the nub on the stud. Guessing torque with a box end wrench didn't seem like an elegant solution. Had the brain-fart to just attach the upper nut that holds the windage tray onto the stud, and torque away. Guess what twisted off before reaching required torque. Hence need for another stud.
How do you guys torque the long stud down? Long spark plug socket, etc., or crescent wrench?
Ralph
I had been trying to figure out how to torque this long stud down to the 65-70 lbs. required. None of my longer 5/8 sockets would fit over the nub on the stud. Guessing torque with a box end wrench didn't seem like an elegant solution. Had the brain-fart to just attach the upper nut that holds the windage tray onto the stud, and torque away. Guess what twisted off before reaching required torque. Hence need for another stud.
How do you guys torque the long stud down? Long spark plug socket, etc., or crescent wrench?
Ralph
Used a flare nut wrench or maybe its called a tubing wrench but it has more grip area around the flats than a crows foot. Also i used it 90 degrees to the head of the torque wrench as if used at the end of the wrench it extends the lever arm and ads torque making the torqore wrench setting incorrect.
Hope this helps.
Thread Starter
Drifting
Joined: Jul 2011
Posts: 1,697
Likes: 139
From: Syracuse NY
I ordered the Milodon studs from ebay. I easily torqued them down with a deep socket. I was all excited to get the bottom end buttoned up and spray paint the engine. The next evening I went to install my rockers and found the oil pump shaft in my box of parts. DOH!! Off comes the oil pan.....I need to stop drinking vodka when I build engines....
Race Director
Joined: Jan 2000
Posts: 13,014
Likes: 2,257
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
At least you found it before you dropped in in the car!!
It happens....trust me! You did good!
JIM
It happens....trust me! You did good!
JIM
Drifting
Joined: Nov 2002
Posts: 1,685
Likes: 199
From: Loveland, CO
Will the frustration never end. Ordered part 3902885 from GM Parts direct and evidently there are more than one size bolt for the windage tray. The one I need is for my 350 is 7/16, and the one I got is 1/2" thread.
And, taking out the old bolt out of the main bearing cap, my new Tektron extra long spark plug wrench (5/8) split open around the bolt.
Back to the crescent wrench.
Ralph
And, taking out the old bolt out of the main bearing cap, my new Tektron extra long spark plug wrench (5/8) split open around the bolt.
Back to the crescent wrench.
Ralph