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#1 |
Registered User
Join Date: Jul 2008
Location: Eastern Oregon
Posts: 2,336
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Holy Crap ?
Pulled the factory intake on my 71 350 today to install a Edelbrock Performer intake and a HEI. Know I know why the choke never worked properly. 125K on original engine, other then the carbon buildup the inside looked clean as a whistle. Truck was serviced at selling dealer all it's life until it closed in 08.
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71 C-20 07 Magnum RT AWD |
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#2 |
Registered User
Join Date: Feb 2012
Location: Smyrna TN
Posts: 1,153
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Re: Holy Crap ?
Wow, that's nasty looking. I remember years ago seeing the inside of small blocks that the owner ran Quaker State had quite a bit of build up. I'm sure I'll get some Quaker State fan responses on this post:-)
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1971 Longbed BB Cheyenne Super 1972 Longbed SB Cheyenne Super 1972 Longbed Highlander Custom Deluxe 1975 K5 4x4 full convertible Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=645165 Greg Smyrna TN |
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#3 | |
Senior Member
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Location: Rapid City, SD
Posts: 2,281
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Re: Holy Crap ?
Quote:
Where I am from, we always heard Pennzoil was the culprit of engines that looked like that.
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My Trucks: 1967 Chevrolet Short Wide Box 327 TH350 9" w/3.90 gears paint will be White - Current Project 1967 Chevrolet Custom LWB 283 TH400 3.73 Posi, no-AC, no-PS, no-PB, bench-seat, small-window - mostly orig driver 1967 Chevrolet CST LWB originally a 327 TH400 3.73 Posi AC PS PB, had Buddy Buckets, Small Window - parts truck 1967 Chevrolet CST LWB, 283 MT 3.73 had Buddy Buckets, Panoramic Window - parts truck 2001 Chevrolet 3500 2WD Crew Cab Dually 8.1L Allison White |
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#4 | |
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Location: Chandler AZ
Posts: 1,149
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Re: Holy Crap ?
54 Blackhornet, that is yucky looking but have seen worse... That will clean up nicely.
I had the pleasure of working on an old Chevy that when the valve cover was pulled, it had wax 2" deep around every valve spring. I don't know how they even got oil in it. Under the intake was worse. Quote:
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1970 Longhorn, Front Disc, 350/4 bolt, 882 heads, HEI, Edelbrock, 700R4, HO-52/4.11. 1996 Corvette, Collector Roadster, LT4, 396, 450RWHP, 6sp, 4.11/Dana44/posi 5 point roll bar And let us not grow weary of doing good, for in due season we will reap, if we do not give up. Gal 6:9 Last edited by Longhorn 70; 03-18-2015 at 10:12 AM. |
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#5 |
Registered User
Join Date: Jul 2008
Location: Eastern Oregon
Posts: 2,336
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Re: Holy Crap ?
Carbon build up on exhaust crossover under intake, heads and rest of engine where real clean. No idea what oil was used by service dealer ?
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71 C-20 07 Magnum RT AWD |
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#6 |
Registered User
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Location: Saint Amant, Louisisiana
Posts: 101
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Re: Holy Crap ?
Dad made me clean a gazillian that looked like that.........
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#7 |
laying low
![]() Join Date: Mar 2001
Location: Searcy, Ark. USA
Posts: 13,232
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Re: Holy Crap ?
It's not the brand of oil or filter that causes an engine to sludge up as much as it is a poor service regimen.
Over the years I have used both QState and Pzoil in my vehicles and never experienced sludge build up. I don't do anything special. I do change the oil on time and use a new AC filter at every oil change and keep the engines in tune. I get lots of miles out of them. Couldn't be happier.
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Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross |
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#8 |
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Join Date: Oct 2008
Location: Marianna Arkansas
Posts: 7,269
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Re: Holy Crap ?
Boog, hate to disagree but this was a thing in the say mid to late 70's It was a paraffin crude and the Northeast based QS and Pennzoil happened to run those types. the other type was a It escapes me at the moment but I was just around 9 nine years old at that time. I do remember the guy came to our shop selling Schaffer oil and had a little bearing load tester type test set up to show how under other conditions other brands of oil would over heat and their wouldn't. It must have been a smoke and mirror type show. Dad bought several 55 gal drums of it and put it in every tractor combine bobtruck pickup car motorcycle lawnmower and anything that had a oil cap. A couple months later the Pontiac started to run bad so he took it in for a checkup, [oil was changed on everything every 2000 miles cause we lived on a dirt road]and the sludge filled the lifter valley and the valve cover areas were packed. He came home and walked through the tractor shed with a wrench draining oil out of everything in the shed it was lay by time]. I remember those oil drums sitting for many years after that over in the corner, we went allowed to touch them. Not even to use that stuff to start a fire with.
It could have been a quality control thing cause I know QS is good oil I know of trucks that have run 400k on it but at that particular point in time they did have that one problem. It also put a blemish on their reputation that took them a while to over come, witch they have done nicely. Jim |
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#9 |
Special Order
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Location: Mt Airy, MD
Posts: 85,859
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Re: Holy Crap ?
That's funny, my first thought was "must have run Quaker State" then the first response says the same. That crap is/was parafin based and it's a fact that stuff is/was bad juju. Penzoil is good oil. I call myth on that. I used it for years till my dad talked me into trying Castrol in a truck I bought that used oil real bad and the Castrol cured it. It's got caster oil in it
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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#10 |
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Join Date: Feb 2012
Location: Ruskin Florida
Posts: 4,560
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Re: Holy Crap ?
That part of the intake is the exhaust crossover and it gets real hot. The rest looks real clean. The heat would probably cook any oil. Lucky man!
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70 swb 4x4 406sbc 700r4 203/205 d60/14blt locker yadda yadda http://67-72chevytrucks.com/vboard/s...88#post6935688 Yeller 72 Blazer 2wd conversion project "No Daggum Money" http://67-72chevytrucks.com/vboard/s...d.php?t=550804 LS1-T56 3.73 LSD super budget build Blanco-2014 Sierra SWB https://67-72chevytrucks.com/vboard/...d.php?t=810350 |
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#11 |
laying low
![]() Join Date: Mar 2001
Location: Searcy, Ark. USA
Posts: 13,232
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Re: Holy Crap ?
Yes Jim. I am aware of the differences in oil bases. I am 61 so I've got a lot of miles behind me.
![]() I once bought a 75 ford with a fresh paint job and a weak engine. No oil pressure. Upon opening it up the lifter valley was smooth covered over. The lifters could not be seen due to the amount of buildup. Good compression but low oil pressure. I thoroughly cleaned it and put a new crank and bearings in it. Got oil pressure back. Made a good old car again. I don't know what brand oil the guy had run in it but I was sure he didn't change it regularly. There are actually some folks out there who drain the oil and add more but rarely change the filter. I've heard of others who cheap out and only replace the filter and only add oil as needed. Rediculous isn't it? Funny thing about that old ford guy. He thought he was getting the best of me on the deal. Once I fixed the engine and polished the car up and drove it around he got pissed at me. Would look the other way. I made a few bucks on it. ![]()
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Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross |
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#12 |
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Join Date: Mar 2009
Location: WARRENSBURG,MISSOURI,64093
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#13 |
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Join Date: Jul 2014
Location: Missouri
Posts: 1,427
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Re: Holy Crap ?
It looks like my highschool welding class' practice pieces
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Jack Personal Fleet: Family Fleet: 1955.5 Panel 1959 Apache 1968 ShortWide 1969 ShortStep |
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#14 |
Registered User
Join Date: Nov 2014
Location: Austin
Posts: 749
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Re: Holy Crap ?
Although that is some nasty looking buildup, I don't see how that would affect choke performance. The crossover heats the top and bottom of the manifold. The choke is on the top unaffected from the buildup on the bottom.
Now, to understand where I am coming from, I started my driving career with a 71 RS Camaro about 35 years ago. Back then, I rebuilt a couple of Chevy small blocks. I remember the same crude on all the engines I worked on. Always remove that plate for cleaning when manifold is off. So, what I said above is strictly very old memory. Anyway, good luck with your new setup. |
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#15 |
Senior Member
Join Date: Jul 2010
Location: South Dakota
Posts: 4,093
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Re: Holy Crap ?
I've always thought of oil as the blood of the motor. I use to run valvoline but now I only use amsoil and never regret it. Once a year oil changes and no sludge build up. I liked valvoline but always dealt with sludge.
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1969 Chevy c20(Miss Hackjob) |
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#16 |
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Location: Bend, OR
Posts: 58
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Re: Holy Crap ?
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#17 |
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Location: Forestburg, Texas
Posts: 659
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Re: Holy Crap ?
After seeing a few engines in the late 70's early 80's sludged up real bad.. one when I pulled the VC it had a perfect mold of the inside. All engines I have seen sludged were running Pzoil or QS. I run Valvoline all-season or Royal Purple for gas and Rotella T for my Duramax. Valvoline and Casteroil are West Texas crude.
However, the OP picture is fairly typical of a high mileage engine with exhaust crossover and missing heat shield. Regardless of the oil used. Mark
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Mark Jesus is the Way! 2003 2500HD CCLB Duramax/Ali (Clifford) 2014 2SS/RS black on black Camaro (Betty) 2006 Pontiac SOLSTICE silver/black (Lula-Bell) 1970 C/10 Short Wide (Peggy) 1964 C/10 Short Step (Hambone) RIP Jimmy Hamilton Thank you for the trucks |
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#18 | |
Account Suspended
Join Date: Jan 2007
Location: Tucson
Posts: 2,183
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Re: Holy Crap ?
Quote:
There are two types of crude oils, Napthene based crudes and parafin based crudes. A crude oil containing paraffin wax but very few asphaltic materials is a 'parafin base crude'. This type of oil is suitable for motor lubricating oil and kerosene. Crude oil containing asphaltic materials but very little or no paraffin wax is a 'napthene base crude'. This type of oil is suitable for making gasoline, lubricating oil and asphalt. It is also called asphalt-base crude. All motor oils are byproducts of refining either or both crudes and are chemically and molecularly indistinguishable. There simply is no difference between the refined product as both are identical hydrocarbon chains. It is the additives that differ, and it is the additives that alter the lubricity, temperature tolerance and formation of varnishes under load. Some oils are notorious for the formation of varnish BUT that is a result of 'stuff' the brand manufacturer added, not a fault of the refined product! If you get any oil hot enough for a long enough time it will boil off all of the volatiles and leave behind hard, almost pure carbon. |
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