So long as it's sitting on the frame, you should be fine. But I wouldn't put it in gear as the back wheels are hanging pretty low and something could get bent or twisted turning with such a angle.
Starting on jack stands
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Heel & Toe
Joined: Sep 2003
Posts: 24
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From: State College PA
Starting on jack stands
I have my C5 up on 4 jack stands to check for a persistant oil drip.
I've used jack pads under the cross members and it seems pretty solid.
Will it be ok or safe to start it while up on the stands?
I'm just a little nervous about the "torque rock" when it starts.
I've used jack pads under the cross members and it seems pretty solid.
Will it be ok or safe to start it while up on the stands?
I'm just a little nervous about the "torque rock" when it starts.
Race Director
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Safety Car
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From: Weatherford, TX
I did add a ziptie to keep the ebrake line tight with the swaybar, or it wanted to rub the wheel. Good luck with the pesky leak! I just finished doing a rear main seal.
Thread Starter
Heel & Toe
Joined: Sep 2003
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From: State College PA
http://forums.corvetteforum.com/phot...9/ppuser/52552
it's on the "optional" crossmember jacking location in the front and on the rear crossmember per the manual.
Racer
Joined: Nov 2006
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From: Tampa Bay Area, U.S.A. (Zombie Nation)
Even on the crossmembers the torque of the engine is not enough to cause your car to fall off the stands. If you can't make it fall off the stands by pushing on the side of the car the engine isn't going to do it. But I'm not talking about intentionally rocking it back and forth with all your mite. Almost anything is possible if you try hard enough.
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Team Owner
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From: Virginia
St. Jude Donor '11
It's not sitting on the frame. it's on the cross members using jack pads. I posted a pic of how it's sitting in my photos.
http://forums.corvetteforum.com/phot...9/ppuser/52552
it's on the "optional" crossmember jacking location in the front and on the rear crossmember per the manual.
http://forums.corvetteforum.com/phot...9/ppuser/52552
it's on the "optional" crossmember jacking location in the front and on the rear crossmember per the manual.
Thats pretty high up...scares the crap out of me thinking that it could fall foward or rearward because its just on the skinny cross rail(or whatever you call it)
I would put my jack in the middle of the rear crossbar ..touching with light pressure under the wood.. just for a little extra insuranc(like you have done in the front)..yea I know...paranoid me
it's on the "optional" crossmember jacking location in the front and on the rear crossmember per the manual
Last edited by Yello95; Dec 27, 2010 at 09:40 PM.
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I've started the car up before while it was on jack stands. No problems at all.
Team Owner
Joined: May 2006
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From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
I have many a time and you should be fine!
If you have reasonably set it up and it is solid you'll be good
Thanks,Matt
If you have reasonably set it up and it is solid you'll be good
Thanks,Matt
Drifting
Joined: Feb 2007
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From: Santa Maria Ca.
That's how I exercise the ABS pump on mine
Up on stands,start it up,put it in second and let the clutch out-anything over about 12mph on the speedo kicks the TC on,and off,and on,and off,etc.--gives the ABS pump a nice little workout.
Up on stands,start it up,put it in second and let the clutch out-anything over about 12mph on the speedo kicks the TC on,and off,and on,and off,etc.--gives the ABS pump a nice little workout.
Melting Slicks
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From: Simpsonville SC
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My car has been up on 4 jackstands for 3 months now. I start it up every week to keep everything working well. I generally let the oil temp get up to 150 degrees before I shut it down.
Resident moron
Joined: Jun 2003
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From: Assachusetts
Thats pretty high up...scares the crap out of me thinking that it could fall foward or rearward because its just on the skinny cross rail(or whatever you call it)
I would put my jack in the middle of the rear crossbar ..touching with light pressure under the wood.. just for a little extra insuranc(like you have done in the front)..yea I know...paranoid me
I like that wooden brace thing, I need to make up something like that someday. I usually at least jack the car on the crossmember to get it in the air and I just use scrap wood.
Dope
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From: Virginia
St. Jude Donor '11
Better to be paranoid than to be dead. Honestly I never support the car via the crossmembers, I put the jackstands on the framerails (right where the factory slots are). If I do have to support via the crossmembers, I use wood to span the 2 crossrails for a little extra support. Those crossrails are just cast aluminum, always makes me nervous. Though it's probably fine - like you said it's just paranoia
I like that wooden brace thing, I need to make up something like that someday. I usually at least jack the car on the crossmember to get it in the air and I just use scrap wood.
Dope
I like that wooden brace thing, I need to make up something like that someday. I usually at least jack the car on the crossmember to get it in the air and I just use scrap wood.
Dope
Burning Brakes
Joined: Aug 2009
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From: Olympia WA
That looks fine.
I had mine up higher than that during my suspension upgrade and I was yanking/swearing etc during the process.
I just use a single 2x6 across the cradles though.
If you can sneak 5 ton jack stands under the front and back, its a lot more stable than 2 ton jack stands once you get up a ways.
I use 5 ton in the front and 2 ton in the back.
I had mine up higher than that during my suspension upgrade and I was yanking/swearing etc during the process.
I just use a single 2x6 across the cradles though.
If you can sneak 5 ton jack stands under the front and back, its a lot more stable than 2 ton jack stands once you get up a ways.
I use 5 ton in the front and 2 ton in the back.
Pro
Joined: Jan 2007
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From: 15 miles south from the Raisin Capitol of the World Caifornia
I have been under mine with the car running, on good solid stands.
If you ever do an A4 trans fluid change with out a lift, it's the only way. The car has to be running to put in the final few quarts of fluid.
If you ever do an A4 trans fluid change with out a lift, it's the only way. The car has to be running to put in the final few quarts of fluid.
Last edited by dw99vette; Dec 28, 2010 at 09:03 PM.
Le Mans Master
Joined: Mar 2006
Posts: 7,207
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From: Lino Lakes MN
I jack my car up all the time like the pics with 2 x 8 and then support the car with 3 ton jack stands, no problems with starting or running the car. Had the car up for over a week while installing LT Headers and SS Exhaust.
Thread Starter
Heel & Toe
Joined: Sep 2003
Posts: 24
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From: State College PA
Wow, thanks for all the replies guys.
Got another question. Once I start it, will the A4 tranny warm up enough to check the fluid if I put it in gear and simply hold the brake to keep the wheels from spinning? That should put a small load on the tranny and maybe warm the tranny enough?????
OK, 2 more questions. If I need to add fluid, How in the heck do you do it?
Do you rig up something with some sort of hose attached to a qt bottle and squeeze the bottle to force it in?
Got another question. Once I start it, will the A4 tranny warm up enough to check the fluid if I put it in gear and simply hold the brake to keep the wheels from spinning? That should put a small load on the tranny and maybe warm the tranny enough?????
OK, 2 more questions. If I need to add fluid, How in the heck do you do it?
Do you rig up something with some sort of hose attached to a qt bottle and squeeze the bottle to force it in?