-40F oil flow comparisons

[Dan in MI]

Main thing, change oil and filter regular

THAT is the answer.

In my time in a dynamometer lad we had an engine (302, 4 bolt main, race built) that ran a cyclic test. Idle to 6500 rpm, twice a minute. 24 hrs a day 7 days a week for 14 months. It would get shut down once every eight hours for an oil level check and then right back on test. Oil was changed every 72 hrs. At it's 2000 hour rebuild it looked band new inside. Due to the frequent oil changes we were able to stretch out its rebuild to 4000 hours. Good deal on a $9000 rebuild. (we had four of these engines)

 

[daveg.inkc]

Main thing, change oil and filter regular

THAT is the answer.

In my time in a dynamometer lad we had an engine (302, 4 bolt main, race built) that ran a cyclic test. Idle to 6500 rpm, twice a minute. 24 hrs a day 7 days a week for 14 months. It would get shut down once every eight hours for an oil level check and then right back on test. Oil was changed every 72 hrs. At it's 2000 hour rebuild it looked band new inside. Due to the frequent oil changes we were able to stretch out its rebuild to 4000 hours. Good deal on a $9000 rebuild. (we had four of these engines)

What brand of oil and filters did you use? Do you remember what oil pressure was at idle? and at 6500?

 

[Dan in MI]

Motorcraft filters Fl-1A (of course - Ford lab) I can't say for sure on the oil It was either Motorcraft branded or Mobil 1. (we did use M-1 on some engines) Oil PSI? This was 1990, you're lucky I remember what I do. :lol:

 

[Wyandot Jim]

Dang. When you said a 302 I knew it had to be the GREAT Chevy 302.
I didn't know a Ford would run more than a week at 50MPH.
Just joking. That is one hell of a test for any kind of engine.
GREAT info.

 

[Rick Courtright]

Dang. When you said a 302 I knew it had to be the GREAT Chevy 302.

Hi,

Chevy had a 302? I learn something new here every day! Oh, wait, we should change "learn" to "remember": a college buddy had a '69 Z28 with a 302. He learned a lot in that car! Like a Spridget could leave him huffing and puffing with a bad case of white knuckles trying to keep up on the serious twisties of back country San Diego's hills (condensed version: there's more to driving than mashing the skinny pedal on the right), and one of those "overpriced VWs" (Porsche 911S) could match his top speed on the freeway and still have a gear to go.

One of my neighbors is a bit of a car guy, and last night we were discussing vehicles we'd had in those days that shouldn't have been sold, traded or given away if we'd had good sense. That Z28 came into the conversation.

Rick C

 

[Dan in MI]

Funny part. The engine wasn't the test piece.

 

[graygun]

I was thinking it was Ford 302.

 

[Wyandot Jim]

Funny part. The engine wasn't the test piece.

So what were they testing????

graygun.

Chevy did in fact build a 302. Probably the most wanted Chevy car made 1969 Camaro Z28 DZ302

The 302 was built for 1 reason only. To compete in SCCA Trans Am racing which had a maximum engine displacement rule of 305 cubic inches and the engine must be a production engine installed into X amount of cars

The Chevy 302 started in 67 and went through 69..

 

[Dan in MI]

Automatic transmission torque converters.

 

[gunzo]

In all fairness; the Walmart bottle had a smaller opening than the others. Probably wouldn't have helped much, but it hurt.


Met a lab tech that had worked for a major oil company. Being a gear head, I bombarded him with questions. Yes, they did line up 5 or 6 engines that had been running with different brands of oil, drain the oil & see how long each ran. They didn't use big V-8's like in the commercial though, 5 horse Briggs & Stratton's.
He mentioned that the company had developed a graphite based motor oil that exceeded anything they tested, but it was never released to the public. The marketing dept. was sure they couldn't sell black oil.



Dirt & dust that gets past a bad or poorly serviced air filter will kill an engine as quick as any other enemy. No oil can stand up to dirty intake air. I once wondered for a moment why my all factory built Chevy V-8 powered boat only had a screen for an air filter. Finally, palm smack to head, no dust or dirt on the lake, only a bug or two.


Synthetic oil lowered he head temperature on my Harley by 15 degrees, but it made it puff smoke when I blipped the throttle, & no, it ain't blowed up.:wink: I switched back non synthetic.

 

[graygun]

Funny part. The engine wasn't the test piece.

So what were they testing????

graygun.

Chevy did in fact build a 302. Probably the most wanted Chevy car made 1969 Camaro Z28 DZ302

The 302 was built for 1 reason only. To compete in SCCA Trans Am racing which had a maximum engine displacement rule of 305 cubic inches and the engine must be a production engine installed into X amount of cars

The Chevy 302 started in 67 and went through 69..

I know about the Chevy 302;it was just the Ford one that came to mind. I'd read where Chrysler tried a destroked 340 for that race series but it didn't do as well as the Ford and Chevrolet entries.