Oil Boil Sound

[BlueWing]

Fired up the 79SC for the first time this season. Can't believe it is mid-July and only now pulling it out of storage. Pulled the fuel pump relay turned over until some oil pressure, reinstalled relay and she fired up in about 15 seconds. After about a 10 months smoked as expected, waited for someone to call the local fire department. After a 15 minute run all cleared and gauges all read fine.

The tank gauge showed full, temp gauge was about at the half way mark, and had about 3.5 druck pressure @ 3,000 RPM.

Popped the lid to start the oil change and there is a boiling liquid sound from the top rear area of the engine. I assume it is from the oil cooler but is this an issue needing immediate attention or is it as normal as the gurgle sound going to the front trombone cooler?

This is a 79SC Euro model with metric gauges. The temp gauge is unmarked so I really can't tell the true temp other than it rose about half way thru it's range.

Thanks - Terry

[tcar]

Get a flashlight, look sideways at the left side of the oil temp gauge under the rim.

In very small numbers, under the rim, you'll see centigrade temps marked. (Same for US gauges).

9:00 is usually about 240-250 degrees F.

I assume that by top rear, you mean the front of the engine (toward the front of the car). Is it toward the right side? That's where the oil cooler is. Also the oil tank and hoses off to the side.

Could it be critters/nests being toasted?

[pete3799]

First off.......shame on you for waiting till July to fire it up
Please don't rely on the oil level gauge to check your oil.
Gurgling sound is normal, although i haven't noticed mine doing it lately.
I have to drive mine about 5-6 miles before it reaches operating temp. (about
8 o'clock on the gauge.

[BlueWing]

Yes it is July and just now firing it up. I've been in North Carolina more than here in New Yuck. I'm a northerner and would up in N.C. for their 18 day streak of 90-100 degree days escaped back to N.Y. to find the same. I can't drive the car too much due to some other issues but enough to keep the excitement alive.

I checked the gauge and yes there are temps hidden on the edge, why not just silk screen them in the visible field? The lower markings are 30 and separated a small distance is 60 degrees, mid way is a white line with a small red line next to it on the housing (this is where my gauge was reading, and up towards the to is 160/170 right next to each other. All in celsius of course.
30c - 86f
60c - 140f
160c - 320f
170c - 338f
I don't know what half way would be as the temps on the edge are not evenly spaced. If I used a sweep of 140 degrees celsius and used midway as 70c that would be about 158f which seems too cool. I was driving in mid 90f and 3-4k on the tack for about 15 minutes.

I did check the dip stick for level but used the gauge readings as a base and once warmed up all stayed consistant with some change in pressure according to rpms.

Tranny is barely drivable due to syncros, (coupler, Swepco, adjustments all gone thru).

Terry

[Quicksilver]

The boiling would be water from condensation that has collected over the months that the car has been stored and not heated to the point where it will evaporate.

Water when combined with oil for long periods can cause the formation of acids. Car collections that aren't very climate controlled generally run the cars to get all of their systems to operating temperature to keep them from deteriorating.

The oil needs to be changed in your car and it needs to be heated up for an extended period of time to boil out the remaining moisture. Checking for mouse/rats nests inside the engine shroud is another precaution you should do before running it.

On the trans...
Did it have this problem before?
- If so then you knew you had a problem.
- If not then the clutch is probably not releasing completely. With the obvious moisture issue your engine is showing it is very possible that the flywheel/pressure plate has acquired some rust which has 'grown' the surface. If it isn't bad then gentle use should clear it up. If you know how to double clutch now would be the time to "break out them skills". (Not just blipping, but double clutching. There is a big difference.)

[BlueWing]

Thanks Wayne, yes the tranny issue I have dealt with for the 6/7 years that we have owned the car. My wife can shift it rather gingerly and never wanted to tie the car up, you know the while your in there syndrome. Since I bought her another car the SC is now all mine. Double clutching does help but I sometimes still have a 3rd to 2nd upset. I do have a good used tranny and at the April Hershey swap meet did good on a PP, TOB and cable. Just need the few other bits and disc for the swap out.

I do all my own wrenching so I drained the oil after I got it all heated up and will finish it up today.

I store the car in my enclosed trailer - all locked up, no sunlight, no rodents, no electricity, all safe and secure. I used to monthly start it but from other threads I have read it seemed better to pull battery and not run it to prevent some condensation. The oil cap does stay clean no ugly foamy residue.

After the oil change I guess I'll just have to spend some quality driving time with it.

Terry

[tcar]

Originally Posted by Quicksilver

The boiling would be water from condensation that has collected over the months that the car has been stored and not heated to the point where it will evaporate.

Huh? Boiling water? No.

If there is a little condensation, it would steam off. No boiling.

[RWebb]

True, technically no steam, but it will evaporate. Rate of evap. increase with temperature.

IF you put a pan of water on the kitchen counter, it will be gone in a few days, right?

same thing in th e oil system. you do want to drive the car for a while when you start it & avoid short trips.

this will mean it gets hot to evap. faster the water generated during combustion and condensed water from sitting if any - it also it gets some exercise

[800vmax4]

I would suggest the boiling sound is coming from oil that has leaked and / or collected in or on the heat exchangers.
The exhaust system is one of the only things that should be hot enough to boil oil.
JM.02c

[RWebb]

if so, he'll smell it when driving