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#1
11-24-2024, 12:24 PM
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Cam Break In - Thermostat Out
Do y’all run without a thermostat during camshaft break in?
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#2
11-24-2024, 01:55 PM
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No.
What would possibly be a good reason for doing that!? The motor needs to get up to temp fast so that oil flows well and gets kicked up well onto the cam & lifters. On the few motors I have fired up in a cold winter garage to break in a cam I went thru the trouble of heating up 4 qts of oil to pour in by having then soak in 5 gallons pail of very hot water and then adding them down into the motor and within 3 minutes firing up the motor for the first time.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#3
11-24-2024, 02:06 PM
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Makes scenes. This is a bone stock 350 so it’s hopefully easier to manage.
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#4
11-25-2024, 08:05 AM
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There always Jim Hand’s cam break in method of doing (3) ten minute runs. I reckon that breaks everything in with the assurance there’s no overheating.
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#5
11-25-2024, 09:02 AM
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Always with T-stat. Start-run to 2200 rpm, take route to nearest highway. Seat them rings, spin them lifters.
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#6
11-25-2024, 09:37 AM
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With engine in car, I run a thermostat but no antifreeze, just water. It's common for coolant to belch out and make a mess in a restored engine compartment and antifreeze is a mess to clean. To avoid that almost completely, the air lift systems that have been out for a long time makes the first fill super clean by pulling a vacuum on the entire system before adding fluid. This is also a great leak test. On our dyno, the engine must be run without a thermostat. This is because the cooling tower has an adjustable one built into it. I set it to 180-185 during break-in and engine load to 25-30% for nice piston ring break-in.
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#7
11-25-2024, 09:58 AM
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Good to know. Thanks. Question about Fel-Pro head gaskets. 8518. Is there a block side and a head side of this gasket?
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#8
11-25-2024, 10:00 AM
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Never heard of the Air Lift system -very cool!
https://www.amazon.com/UView-550000-.../dp/B0002SRH5G
__________________
Will Rivera '69 Firebird, 400/461, 290 Eddy D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears ‘66 Lemans, 455, 310 KRE D-Ports, HR 236/245, TH400, GV OD, 12 bolt 3.90 gears, work in progress '69 LeMans Vert, 350, #47 heads, TH400, 10 Bolt 3.90 gears, work in progress |
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#9
11-25-2024, 10:17 AM
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Quote:
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#10
11-25-2024, 02:55 PM
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__________________
“Nothing in the world can take the place of persistence. Talent will not; nothing is more common than unsuccessful men with talent. Genius will not; unrewarded genius is almost a proverb. Education will not; the world is full of educated derelicts. Persistence and determination alone are omnipotent. The slogan Press On! has solved and always will solve the problems of the human race.” ― Calvin Coolidge |
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#11
11-25-2024, 02:58 PM
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No spills
No mess or wasting coolant.
__________________
“Nothing in the world can take the place of persistence. Talent will not; nothing is more common than unsuccessful men with talent. Genius will not; unrewarded genius is almost a proverb. Education will not; the world is full of educated derelicts. Persistence and determination alone are omnipotent. The slogan Press On! has solved and always will solve the problems of the human race.” ― Calvin Coolidge |
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#12
11-25-2024, 03:42 PM
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I've done it both ways. Haven't had an issue with either one.
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"Those poor souls have made the fatal mistake of surrounding us. Now we can fire in any direction" 1970 Trans Am RAIII 4 speed 1971 Trans Am 5.3 LM7 1977 Trans Am W72 Y82 1987 Grand National |
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#13
11-25-2024, 04:24 PM
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HO, What cam and lifters did you decide on?
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1977 Black Trans Am 180 HP Auto, essentially base model T/A. I'm the original owner, purchased May 7, 1977. Shut it off Shut it off Buddy, I just shut your Prius down... 
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#14
11-25-2024, 06:50 PM
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Found a new Elgin “066” cam made before 2007. Then ordered the Hy-lift Johnson lifters from Butler. Heads were rebuilt with new valves, guides, and stock rate springs, milled .015 and exhaust flange dressed on the mill. Everything is painted and my son in law is dropping by this evening to help me set the heads back on the block. This is an in frame job so trying to save my old back…
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