Hey guys,great forum here.I have a 89 300e 3.0l & need to know head bolt torque,for some reason my manuel doesent have it.Is there any helpful info for doing this job? Any info would be GREATLY appreciated,Also how do I access my blower motor?Thanks a lot guys,Have a great weekend.

70Nm. Remember to oil the bolts.

Here is the correct tightening order:


This is for my 1990 300SE, but we both have the same engine.

Thanks Danwatt.You wouldent happen to know how to access the blower motor would you?It quit working on me.I guess Ill check fuses before I get too crazy.Thanks again

How much does the cylinder head weight?

Getting to the blower motor I believe involves removal of the engine bay trim around the windshield and removal of the dash....

__________________
2006 BMW M5 "Heidi" @ 109,000 miles
2005 MBZ C55 AMG "Lorelai" @ 165,000 miles
1991 MBZ 300E "Benzachino II" @ 165,000 miles
1990 MBZ 500SL "Shoshanna" @ 118,000 miles

(On the hunt for a good used M103 engine as of 6/10/23, PM me if you have one to sell!)

The head on my 1992 300SE was extremely heavy. I wish I had weighed it but i would estimate close to 100lbs. or more. I did manage to pull it off by myself when doing a valve job recently, but it was very difficult. Have someone help you to prevent injury or damage.


When replacing the head I would recommend using an engine hoist to lower it and to avoid damaging the head gasket. Extreme care is necessary when lowering into place. An extra person or two would be wise.

A tip - put the rear four head bolts into the head before lowering. These are difficult to impossible to put in after the head is in place. It's a big job but having done it successfully it feels really good.

Tim

On the 300E , you get to the blower motor under the wiper at the base of the windshield...all from outside the car...no need to remove the dash.

__________________
2012 E350
2006 Callaway SC560

Thanks for the input.Sounds like a lot of good advice.Hope to start it this weekend & hopefully get the blower diag tomorrow.

Hey brewtoo,I see you have a z06.How do you like it.Im getting one next summer,see-ya