how do i do a LH8 oil pan swap on a LQ4?
#1
how do i do a LH8 oil pan swap on a LQ4?
i have the lh8 oil pan kit coming in the mail, and i was wondering how would i go about changing the oil pan.
right now the oil is not in the vehicle - so it should be fairly easy.
this is what i was thinking
1 Drain Oil Pan
2 Clean the surface on the engine that the oil pan gasket comes in contact with of any oils.
3 Take new engine and put in the windage tray, pickups and dip stick? how do i go about doing this?
4 Take the new gasket supplied in the kit and apply RTV sealant to it and the surface on the engine it will come in contact with (anything better that i could use other than RTV?)
5 bolt down the new oil pan (does anyone know the torq specs for this? - also do i do them all hand tight then torque them in a random pattern?
thanks guys - this is my first car and my first swap, hopefully i can have the engine in before the end of the week.
right now the oil is not in the vehicle - so it should be fairly easy.
this is what i was thinking
1 Drain Oil Pan
2 Clean the surface on the engine that the oil pan gasket comes in contact with of any oils.
3 Take new engine and put in the windage tray, pickups and dip stick? how do i go about doing this?
4 Take the new gasket supplied in the kit and apply RTV sealant to it and the surface on the engine it will come in contact with (anything better that i could use other than RTV?)
5 bolt down the new oil pan (does anyone know the torq specs for this? - also do i do them all hand tight then torque them in a random pattern?
thanks guys - this is my first car and my first swap, hopefully i can have the engine in before the end of the week.
#2
On The Tree
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i have the lh8 oil pan kit coming in the mail, and i was wondering how would i go about changing the oil pan.
right now the oil is not in the vehicle - so it should be fairly easy.
this is what i was thinking
1 Drain Oil Pan
2 Clean the surface on the engine that the oil pan gasket comes in contact with of any oils.
3 Take new engine and put in the windage tray, pickups and dip stick? how do i go about doing this?
4 Take the new gasket supplied in the kit and apply RTV sealant to it and the surface on the engine it will come in contact with (anything better that i could use other than RTV?)
5 bolt down the new oil pan (does anyone know the torq specs for this? - also do i do them all hand tight then torque them in a random pattern?
thanks guys - this is my first car and my first swap, hopefully i can have the engine in before the end of the week.
right now the oil is not in the vehicle - so it should be fairly easy.
this is what i was thinking
1 Drain Oil Pan
2 Clean the surface on the engine that the oil pan gasket comes in contact with of any oils.
3 Take new engine and put in the windage tray, pickups and dip stick? how do i go about doing this?
4 Take the new gasket supplied in the kit and apply RTV sealant to it and the surface on the engine it will come in contact with (anything better that i could use other than RTV?)
5 bolt down the new oil pan (does anyone know the torq specs for this? - also do i do them all hand tight then torque them in a random pattern?
thanks guys - this is my first car and my first swap, hopefully i can have the engine in before the end of the week.
2. Change the windage tray and pick up tube that will come with your kit. Be very careful and make sure the O-ring is properly set in the oil pump on the front of the engine or you will have low oil pressure.
3. Your kit should also come with new bolts use them as some of the pan thickness's are different from Camaro pans to vette pans etc......
4. Found this link gives all torque specs.
http://www.z06vette.com/forums/f5/en...e-specs-75915/
As for sequince I dont know I just started from the middle and worked my way out.
Tim.
#3
TECH Fanatic
The windage trays are the same truck style and you can reuse it and leave it in place. I left mine on my LQ4. Just change the pickup tube. Make sure the tube bolts down flush and not cocked to on side in the oil pump.
Just make sure when you bolt the pan down that the rear face of the pan is flush with the bellhouse face. You can use a straight edge for this.
Just make sure when you bolt the pan down that the rear face of the pan is flush with the bellhouse face. You can use a straight edge for this.
#4
NO RTV Sealant on the gasket surface, other than a dab of that special G.M. sealant or an equivalent type of sealant on the 4 corners of the block where the front and rear covers meet the block.
Last edited by lizeec; 10-15-2011 at 07:41 PM.
#5
TECH Junkie
iTrader: (1)
Actually, my LQ4/9 manual says to use a dab of sealant at the 4 corners on the block side only where the joints are. I used rtv.
Oil Pan Installation
Important:
• The alignment of the structural oil pan is critical. The
rear bolt hole locations of the oil pan provide mounting
points for the transmission housing. To ensure the
rigidity of the powertrain and correct transmission
alignment, it is important that the rear of the block and
the rear of the oil pan are flush or even. The rear of the
oil pan must NEVER protrude beyond the engine block
and transmission housing plane.
• Do not reuse the oil pan gasket.
• It is not necessary to rivet the NEW gasket to the oil
pan.
• It is not necessary to remove the oil level sensor (if
applicable) prior to oil pan installation.
Notice: Refer to Fastener Notice in Cautions and Notices.
1. Install the oil pan baffle and bolts (if previously
removed).
Tighten
Tighten the oil pan baffle bolts to 12 N.m (106 lb in).
2. Apply a 5 mm (0.2 in) bead of sealant GM P/N
12378190 or equivalent 20 mm (0.8 in) long to the
engine block. Apply the sealant directly onto the tabs of
the front cover gasket that protrude into the oil pan
surface. Refer to Sealers, Adhesives and Lubricants.
3. Apply a 5 mm (0.2 in) bead of sealant GM P/N
12378190 or equivalent 20 mm (0.8 in) long to the
engine block. Apply the sealant directly onto the tabs of
the rear cover gasket that protrude into the oil pan
surface. Refer to Sealers, Adhesives and Lubricants.
Important: Be sure to align the oil gallery passages in the oil
pan and engine block properly with the oil pan gasket.
4. Pre-assemble the oil pan gasket to the pan.
4.1. Install the gasket onto the oil pan.
4.2. Install the oil pan bolts to the pan and through the
gasket.
5. Install the oil pan, gasket and bolts to the engine block.
6. Tighten bolts finger tight. Do not overtighten.
7. Place a straight edge across the rear of the engine
block and the rear of the oil pan at the transmission
housing mounting surfaces.
8. Align the oil pan until the rear of the engine block and
rear of the oil pan are flush or even.
Tighten
8.1. Tighten the oil pan-to-block and oil pan-to-front
cover bolts to 25 N.m (19 lb ft).
8.2. Tighten the oil pan-to-rear cover bolts to 12 N.m
(106 lb in).
Also, on pan/bellhousing alignment.
9. Measure the oil pan-to-engine block alignment.
9.1. Place a straight edge across the rear of the
engine block and rear of oil pan at the
transmission housing mounting surfaces.
Important: The rear of the oil pan must NEVER protrude
beyond the engine block and transmission housing mounting
surfaces.
9.2. Insert a feeler gauge between the straight edge
and the oil pan transmission housing mounting
surface and check to make sure that there is no
more than a 0.25 mm (0.01 in) gap between the
pan and straight edge.
9.3. If the oil pan alignment is not within
specifications, remove the oil pan and repeat the
above procedure.
Oil Pan Installation
Important:
• The alignment of the structural oil pan is critical. The
rear bolt hole locations of the oil pan provide mounting
points for the transmission housing. To ensure the
rigidity of the powertrain and correct transmission
alignment, it is important that the rear of the block and
the rear of the oil pan are flush or even. The rear of the
oil pan must NEVER protrude beyond the engine block
and transmission housing plane.
• Do not reuse the oil pan gasket.
• It is not necessary to rivet the NEW gasket to the oil
pan.
• It is not necessary to remove the oil level sensor (if
applicable) prior to oil pan installation.
Notice: Refer to Fastener Notice in Cautions and Notices.
1. Install the oil pan baffle and bolts (if previously
removed).
Tighten
Tighten the oil pan baffle bolts to 12 N.m (106 lb in).
2. Apply a 5 mm (0.2 in) bead of sealant GM P/N
12378190 or equivalent 20 mm (0.8 in) long to the
engine block. Apply the sealant directly onto the tabs of
the front cover gasket that protrude into the oil pan
surface. Refer to Sealers, Adhesives and Lubricants.
3. Apply a 5 mm (0.2 in) bead of sealant GM P/N
12378190 or equivalent 20 mm (0.8 in) long to the
engine block. Apply the sealant directly onto the tabs of
the rear cover gasket that protrude into the oil pan
surface. Refer to Sealers, Adhesives and Lubricants.
Important: Be sure to align the oil gallery passages in the oil
pan and engine block properly with the oil pan gasket.
4. Pre-assemble the oil pan gasket to the pan.
4.1. Install the gasket onto the oil pan.
4.2. Install the oil pan bolts to the pan and through the
gasket.
5. Install the oil pan, gasket and bolts to the engine block.
6. Tighten bolts finger tight. Do not overtighten.
7. Place a straight edge across the rear of the engine
block and the rear of the oil pan at the transmission
housing mounting surfaces.
8. Align the oil pan until the rear of the engine block and
rear of the oil pan are flush or even.
Tighten
8.1. Tighten the oil pan-to-block and oil pan-to-front
cover bolts to 25 N.m (19 lb ft).
8.2. Tighten the oil pan-to-rear cover bolts to 12 N.m
(106 lb in).
Also, on pan/bellhousing alignment.
9. Measure the oil pan-to-engine block alignment.
9.1. Place a straight edge across the rear of the
engine block and rear of oil pan at the
transmission housing mounting surfaces.
Important: The rear of the oil pan must NEVER protrude
beyond the engine block and transmission housing mounting
surfaces.
9.2. Insert a feeler gauge between the straight edge
and the oil pan transmission housing mounting
surface and check to make sure that there is no
more than a 0.25 mm (0.01 in) gap between the
pan and straight edge.
9.3. If the oil pan alignment is not within
specifications, remove the oil pan and repeat the
above procedure.