If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
1999 3.1 intake manifold replacement questions
I am in the process of replace the intake manifold gasket on my '99
buick century. The lower gasket was leaking coolant into the engine. Coolant loss was about a pint a week. I would be very grateful if anybody could pass along the torque spec for the rocker arm bolts. Are the intake and exhaust bolts torgued the same? Also, now that I have the lower intake manifold loose and off, should I flush the engine. The store manager recommended that I flush the engine with a garden hose spray. Is this recommended? Is water safe to flush the engine? I really appreciate any responses. Thank You, Steve |
Ads |
#2
|
|||
|
|||
|
#3
|
|||
|
|||
> would be very grateful if anybody could pass along
>the torque spec for the rocker arm bolts. Are the >intake and exhaust bolts torgued the same? According to MOD, they are first torqued to 14 ft/lbs, then turned an additional 30 degrees. Yes, all rocker bolts get the same procedure. >Is water safe to flush the engine? With the lifter valley exposed it would be a bad idea to spray water into there. You would get water into the crank case and that is bad. Change the oil like Anthony said to work the old coolant out of the crank case. It would be a good idea to change your coolant *more than just a drain and fill*. One way to do this is to remove the thermostat and reattach the thermostat housing, then fill the radiator with a garden hose, remove the upper hose at the radiator, and run the engine. The water won't be restricted because the Tstat is gone, so full water flow from the engine to radiator will occur. As water is filling the radiator, the waterpump will draw it in, through the engine, and blow out the old coolant with it through the upper hose, which can be directed towards a large drain bucket. Dispose of the first course of coolant properly. When the water runs clear, you are done. Replace the thermostat with the new gasket you got in your kit. Fill the system with 50/50 Dexcool (orange GM type coolant) UNLESS someone has already flushed the system previously and used standard green coolant. Then you should keep using the green stuff. Toyota MDT in MO |
#4
|
|||
|
|||
I would like to say this and take it for what it's worth, but when
going back together with the intake be VERY careful of how you install your pushrods, their are long one and short ones, the short pushrods are the intake valve pushrods. If installed with an exhaust pushrod on an intake valve, the intake valve will be bent, then a valve job will be in order. Also if you don't have a torque angle gauge to get the 30 degrees after the 14/lbs torque, you can torque them to around 18/lbs. It's around the same thing. There are 2 drain plugs that can be removed from the block to remove the coolant also, one is around the starter and can be taken out easily, the other is on the right side of the engine and can be located by raising the car up and looking between the engine and transmission (the part of the transmission that comes behind the engine, where the right CV axle enters it.) This in my opinion is the best way to get all the coolant out. Then if I were you I would use the green antifreeze. Dexcool is very rough on plastic intake gaskets. And yes, change the oil very soon after doing the intake gasket job, I would recommend 500 miles at the most. |
#5
|
|||
|
|||
> I am in the process of replace the intake manifold gasket on my '99
> buick century. The lower gasket was leaking coolant into the engine. > Coolant loss was about a pint a week. > > I would be very grateful if anybody could pass along the torque spec > for the rocker arm bolts. Are the intake and exhaust bolts torgued the > same? I recomend that you get yourself a book with the specs -- so that YOU can determine the proper procedue! > Also, now that I have the lower intake manifold loose and off, should I > flush the engine. The store manager recommended that I flush the engine > with a garden hose spray. Is this recommended? Is water safe to flush > the engine? sure - not a problem! -- BBA °?° BBA's RC Site - http://www.billybadassrc.com When Privacy Matters -- http://www.epic.org |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
SOHC intake gasket replacement gone wrong - HELP! | Robert Kuimelis | Ford Explorer | 6 | November 24th 04 01:57 AM |
One more Time - Autostick tranny to intake manifold | Scott | VW air cooled | 4 | October 24th 04 03:25 AM |
Intake Manifold for Autostick Tranny | Scott | VW air cooled | 2 | October 22nd 04 06:03 AM |
Intake Manifold Recommendation - Torker? | [email protected] | Corvette | 7 | August 25th 04 06:07 PM |
2.5 L EFI Intake Manifold - Donavan's Suggestion | Andrew Perlow | Dodge | 2 | August 20th 04 10:11 PM |