Oil Pan Torque Sequence????
Pro
Joined: Feb 2004
Posts: 718
Likes: 1
From: barrie ontario
The service manual doesn't require a torque sequence for the oil pan.
says to tighten the oil pan to block and oil pan to front cover bolts to 18 ftlb and the oil pan to rear bolts to 106 lbin<<<INCH pounds.
says to tighten the oil pan to block and oil pan to front cover bolts to 18 ftlb and the oil pan to rear bolts to 106 lbin<<<INCH pounds.
Thread Starter
Le Mans Master
Joined: Sep 2000
Posts: 6,976
Likes: 527
From: Clouds Over California
I guess I will just follow the ole inside to outside pattern with 18 ft lbs and 106 in lbs on the back...what does 106 inch lbs translate to in ft/lbs?
Race Director
Joined: Sep 1999
Posts: 12,433
Likes: 916
From: CONCORD NC
I think you must do the front and rear covers first, but the rest can go in any order. I think that is to align everything correctly before you torque them down. If you do the main pan bolts first, then tight the front/rear, you could crack the pan if it is offset.
This is a quote from the manual:
1. Tighten the oil pan-to-block and oil pan-to-oil pan front cover bolts to 25 N·m (18 lb ft).
2. Tighten the oil pan-to-rear cover bolts to 12 N·m (106 lb in).
3. Tighten the flywheel housing bolts to 50 N·m (37 lb ft).
This is a quote from the manual:
1. Tighten the oil pan-to-block and oil pan-to-oil pan front cover bolts to 25 N·m (18 lb ft).
2. Tighten the oil pan-to-rear cover bolts to 12 N·m (106 lb in).
3. Tighten the flywheel housing bolts to 50 N·m (37 lb ft).
Thread Starter
Le Mans Master
Joined: Sep 2000
Posts: 6,976
Likes: 527
From: Clouds Over California
I think you must do the front and rear covers first, but the rest can go in any order. I think that is to align everything correctly before you torque them down. If you do the main pan bolts first, then tight the front/rear, you could crack the pan if it is offset.
This is a quote from the manual:
1. Tighten the oil pan-to-block and oil pan-to-oil pan front cover bolts to 25 N·m (18 lb ft).
2. Tighten the oil pan-to-rear cover bolts to 12 N·m (106 lb in).
3. Tighten the flywheel housing bolts to 50 N·m (37 lb ft).
This is a quote from the manual:
1. Tighten the oil pan-to-block and oil pan-to-oil pan front cover bolts to 25 N·m (18 lb ft).
2. Tighten the oil pan-to-rear cover bolts to 12 N·m (106 lb in).
3. Tighten the flywheel housing bolts to 50 N·m (37 lb ft).
7th Gear
Joined: Jul 2016
Posts: 7
Likes: 0
I think you must do the front and rear covers first, but the rest can go in any order. I think that is to align everything correctly before you torque them down. If you do the main pan bolts first, then tight the front/rear, you could crack the pan if it is offset.
This is a quote from the manual:
1. Tighten the oil pan-to-block and oil pan-to-oil pan front cover bolts to 25 N·m (18 lb ft).
2. Tighten the oil pan-to-rear cover bolts to 12 N·m (106 lb in).
3. Tighten the flywheel housing bolts to 50 N·m (37 lb ft).
This is a quote from the manual:
1. Tighten the oil pan-to-block and oil pan-to-oil pan front cover bolts to 25 N·m (18 lb ft).
2. Tighten the oil pan-to-rear cover bolts to 12 N·m (106 lb in).
3. Tighten the flywheel housing bolts to 50 N·m (37 lb ft).
Drifting
Joined: Jul 2015
Posts: 1,844
Likes: 375
From: San Jose, CA
This thread is from 2007.
18 lb-ft is a low torque number. You can exert 18 lb-ft fairly easily with a small wrench, even a quarter inch ratchet. It's basically "This is about as tight as I feel it'll go" with a quarter inch ratchet. Those bolts absolutely should not be snapping at 18 lb-ft. Really, pretty much no bolts on a car are gonna snap at 18 lb-ft ... What were you tightening it with?
18 lb-ft is a low torque number. You can exert 18 lb-ft fairly easily with a small wrench, even a quarter inch ratchet. It's basically "This is about as tight as I feel it'll go" with a quarter inch ratchet. Those bolts absolutely should not be snapping at 18 lb-ft. Really, pretty much no bolts on a car are gonna snap at 18 lb-ft ... What were you tightening it with?
7th Gear
Joined: Jul 2016
Posts: 7
Likes: 0
Sorry for the thread necromancy, I used a 3/8 torque wrench that I used without any issues on upper pan. Its a sensitive higher end one. The lower pan bolts are smaller and finer thread than upper and now I gotta find an extractor small enough to get in there, gonna suck.
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Drifting
Joined: Jul 2015
Posts: 1,844
Likes: 375
From: San Jose, CA
When I use a 3/8" torque wrench, 18 pounds feels like "eh it finally stopped spinning freely, let me kinda push it a little" sort of effort. Did you feel like you were putting in a lot of effort?
I'd probably reach for a 1/4" ratchet, snug all the bolts nice and good, then use a torque wrench to verify, expecting not very much more before it clicks. Of course a gasket compresses a little so I'd go over them for a second pass with the smaller ratchet to make sure they were all actually snug. If you felt like you were putting in effort ... and were worried about breaking a bolt (and in fact broke a bolt), I'm not sure that's 18 lb-ft. But I mean, I wasn't there, so who knows?
I'd probably reach for a 1/4" ratchet, snug all the bolts nice and good, then use a torque wrench to verify, expecting not very much more before it clicks. Of course a gasket compresses a little so I'd go over them for a second pass with the smaller ratchet to make sure they were all actually snug. If you felt like you were putting in effort ... and were worried about breaking a bolt (and in fact broke a bolt), I'm not sure that's 18 lb-ft. But I mean, I wasn't there, so who knows?
Racer
Joined: Mar 2020
Posts: 263
Likes: 62
From: Virginia
When I use a 3/8" torque wrench, 18 pounds feels like "eh it finally stopped spinning freely, let me kinda push it a little" sort of effort. Did you feel like you were putting in a lot of effort?
I'd probably reach for a 1/4" ratchet, snug all the bolts nice and good, then use a torque wrench to verify, expecting not very much more before it clicks. Of course a gasket compresses a little so I'd go over them for a second pass with the smaller ratchet to make sure they were all actually snug. If you felt like you were putting in effort ... and were worried about breaking a bolt (and in fact broke a bolt), I'm not sure that's 18 lb-ft. But I mean, I wasn't there, so who knows?
I'd probably reach for a 1/4" ratchet, snug all the bolts nice and good, then use a torque wrench to verify, expecting not very much more before it clicks. Of course a gasket compresses a little so I'd go over them for a second pass with the smaller ratchet to make sure they were all actually snug. If you felt like you were putting in effort ... and were worried about breaking a bolt (and in fact broke a bolt), I'm not sure that's 18 lb-ft. But I mean, I wasn't there, so who knows?
3rd Gear
Joined: May 2022
Posts: 3
Likes: 1
Well, just my 2 cents on going 18 ft. lbs on pan-to-pan - the bolts kept turning and I was gettin more and more nervous. So I stopped, picked one bolt and went for 18 ft. lbs, bolt snapped clean off in the upper pan long before it got close to 18. I am royally screwed, are you certain that it is the spec ?
18 would be a little much still. a tin pan max 12 ft lbs.
ive done 500 engines in my lifetime . can't believe car manufacturers don't oring pans. caterpillar has done it for decades. the speed wrench
