Post by: GTRS Fiero on December 20, 2019, 08:57:30 pm
There is a round blue gasket, the water pump gasket, a V gasket, and 2 brown rings of different sizes.
Post by: Fierofool on December 20, 2019, 09:18:25 pm
Post by: GTRS Fiero on December 20, 2019, 09:20:57 pm
Post by: Fierofool on December 20, 2019, 10:41:43 pm
Pat pulled an engine out of a car we had a long time ago. I believe it was a 3.4, but it had a cast aluminum oil pan. I seem to recall that it came from a FWD vehicle. Maybe a van. That one may have had a different timing cover, too. I don't remember where the club got that car.
Post by: GTRS Fiero on December 22, 2019, 08:56:29 am
I don't understand how, if the timing cover gaskets are different, due to rotation of the water pump, and the intake/discharge ports are different, the parts can swap.
Post by: Raydar on December 22, 2019, 10:32:21 am
The 87-88 timing cover was flat at the bottom where it met the oil pan. The 3.4 also used the same timing cover gasket as the 87-88.
The 87-88 was flat at the corners but the pan had a "scoop" cut out of it. The timing cover had a rounded section where the crank nose came through. This was essentially the same as the Chevy V8. And the 3.4 did use the same style pan and gasket.
Timing covers were interchangeable across the 2.8, 3.1, and 3.4 if the matching oil pan was used, and if the correct water pump orientation is observed.
This is the 85-86 pan gasket.
The tapered area to the left is what seals the "45 degree" nose of the pan. The black seal goes at the rear, around the crank.
This is the 87-88 pan gasket.
This is the correct WP gasket for our cars. Note the rectangular port on the right.
This is the gasket for the "other" water pump rotation.
I hope Rockauto doesn't mind the hot-linking of their photos. :D
Post by: GTRS Fiero on December 22, 2019, 12:45:50 pm
I understand that the 3.4 oil pan is different from the '88 2.8 oil pan.
Post by: TopNotch on December 22, 2019, 01:29:25 pm
Pat pulled an engine out of a car we had a long time ago. I believe it was a 3.4, but it had a cast aluminum oil pan. I seem to recall that it came from a FWD vehicle. Maybe a van. That one may have had a different timing cover, too. I don't remember where the club got that car.Didn't we get that car from Robbie?
Post by: Raydar on December 22, 2019, 02:16:55 pm
So, a timing cover from the 3.4 would work on an '88 2.8?
Yes.. Assuming the water pump is the same as ours. (But I'm betting it's not, since the earlier Camarobird 2.8s already had reverse rotation water pumps.)
Quote
I underdtand that the 3.4 oil pan is different from the '88 2.8 oil pan.
There are some differences. I'm not sure what they are. It will bolt to the 2.8, provided that the 2.8 has the 87-88 timing cover. Or the 3.4 cover, as mentioned earlier.
Post by: Fierofool on December 22, 2019, 04:00:28 pm
Pat, yes we did get that car from Robbie. It had belonged to one of his customers who didn't pay for the work done on it. I don't remember if it was a 3.4 or a 3.1.
The differences in the 3.4 and 88 Fiero oil pan is very minor. There's a little difference in the shape at the front corner of the pan that requires taking a small amount off the front engine mount, or doing a light bit of persuasion with a hammer to provide clearance.
The pan also has an oil level sensor in the side of it. The baffles in it are cut slightly different to accommodate a little larger oil pump, pickup tube and screen. If the 88 pan is used on a 3.4, the baffles have to be trimmed a little so the 3.4 pump and pickup will have clearance.
I believe the timing covers are different between engines. Pretty sure they will bolt to one another, but the different rotation of the water pump and the flow of water would probably prohibit universal use.
Post by: GTRS Fiero on January 21, 2020, 09:56:40 pm
Post by: scottb on January 22, 2020, 05:30:34 pm
How the heck does an aluminum timing cover "rust"?
Chemical reaction
Post by: GTRS Fiero on January 22, 2020, 06:08:25 pm
Post by: scottb on January 22, 2020, 06:17:26 pm
Post by: GTRS Fiero on January 22, 2020, 07:19:39 pm
Post by: scottb on January 22, 2020, 07:31:24 pm
Post by: The Art Doctor on January 22, 2020, 08:23:02 pm
Post by: scottb on January 22, 2020, 08:39:23 pm
Post by: GTRS Fiero on January 22, 2020, 09:12:43 pm
Post by: The Art Doctor on January 22, 2020, 10:12:46 pm
Post by: GTRS Fiero on February 05, 2020, 11:39:13 pm
Post by: The Art Doctor on February 06, 2020, 08:16:10 pm
Post by: GTRS Fiero on February 06, 2020, 08:24:17 pm