The complete repair, rebuild, repaint, and v8 swap of my early model sedan

[JGood]

But wait, there's more! While cleaning the heads up, I noticed one of the cam cap nuts was finger loose. This seemed very odd. So I pulled the other nut, then pulled the cap. It was absolutely destroyed. Proceeded to pull the rest of the caps on that cam. That head and cam are destroyed. The other cam on that head is perfectly fine. The main oil feed to the front cap seems good, and the front cam cap is fine. It's the 2nd, 3rd, 4th, and 5th that are trashed. I ran some brake cleaner through the oil feed tray, and it ran out of each hole. So I have no idea how or when this happened. My only guess is a blockage that cleared itself out at some point, probably before I put these heads on this block. I never saw any glitter in the oil since I built this engine. And it has always had 20psi oil pressure at idle, up to 80+psi at 6k.

[JGood]

Nope, not done yet. I have the early m60 intake manifold with the large seperate trumpets. Well, two of those broke off, and were just laying in the back of the intake manifold, completely jamming up any type of flow into the rear cylinders. You can see the tabs on each side of the trumpets. That tab breaks off, then the trumpet falls off. There are several others that are very loose, so I'm likely going to go with the single piece manifold without the trumpets. I'd rather not deal with that shit, and trade off a likely negligible amount of power. Also, that is a LOT of sludge in that manifold...

[amcp]

Well, that is vexing.

[moatilliatta]

S62 time?

[JGood]

S62 time?

Nope, keeping the car cheap to own and maintain. s62's are not exactly a dime a dozen, but m6x's are. I have another set of heads on the way for just the price of shipping.

[DEV0 E30]

Glad to hear she'll be back, and that you're still around!

[2mAn]

M62 is plenty of power for an E30 IMO

[MrBurgundy]

Jeez, that engine is fucked up lol

[JGood]

Picked up some clean m60b40 cylinder heads, then took them to a friends machine shop to have them hot tank and decked. Took .004" off. Also replaced the valve seals.







I bolted the heads on, at which point I realized the new passenger side head was missing the boss for the inner timing guide. After much confusion and hours of research, I came to the following conclusion:

-Original m60b40 inner timing guides were 3 bolt, and the same part number for driver and passenger
-At some point, they switched to a 2 bolt design guide, with different parts for each side, eliminating the upper mount on the heads. The heads also stopped being cast with the mounting boss.
-When I built this engine, I apparently ended up with 2 new driver side timing guides
-This wasn't a problem back then, because my old heads had the upper boss, so the 2 bolt guide was still being held on by 2 bolts
-When I bolted this new head on, there was no mounting boss, so my guide was held on by 1 bolt. This would have definitely failed catastrophically and destroyed the entire engine.


Luckily, I noticed this. Unluckily, it required removing the lower oil pan, upper oil pan, power steering pump, alternator, water pump, lower timing cover, etc... to get to, which then required replacing all of those gaskets/seals. At the time it sucked, but now that it's done, I do feel good about the very fresh engine.

[JGood]

Back together! Put about 30 miles on it so far. Hopefully it’s good to go for another decade!

[Panici]

Oof you weren't kidding when you said that cam was destroyed. Don't think I've seen one that bad.

Glad it's up and running now!

[DEV0 E30]

Nice work!

[QuiqueUy]

very nice work man ! just took the time to read the 79 pages and i can say you delivered very good !

22 years in your ownership and that car is amazing , really love the front radiator mount being removable and the style of the car ! hopefully the car is good for a lot more miles !

btw , the cams were really trashed haha ..