Engine break in question.
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Engine break in question.
I am having my 302 in my Bronco replaced as I type this. Its a reman. Anybody have any tips or suggestions on how to properly break in this motor. I just want to make sure I do everything right to help the motor last as long as possible. Thanks in advance for any advice.
Nate
'87 Bronco 302,AOD, yadda,yadda
P.S. This should probably go in the oil section but is there a brand of oil that seems to work better on initial break in?
Nate
'87 Bronco 302,AOD, yadda,yadda
P.S. This should probably go in the oil section but is there a brand of oil that seems to work better on initial break in?
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Joined: Aug 2001
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From: Nevada
Engine break in question.
The important factor for any engine break-in is the cam. I like to prime the oil pump with an electric drill until a mechanical gauge show spressure or oil is being steadily pumped out of the push rods. Replace rocker arm covers, fire the engine and run at a steady 1500-2000rpm for 15-20 minutes. Shut down, change oil and filter, allow to cool down. Start, adjust timing/carb if applicable and drive it.
Modern rings seat with minutes or a few miles. Some people like to keep the rpms low and fluctuate rpms for the first 500 miles of driving, but I don't feel that's necessary. Race engines have no problems seating rings and all they get is a cam break-in period with flat tappet or solid roller lifters. Hydraulic rollers require no cam break-in period.
For initial start-up, I use a cheap 30 weight oil. First change a 10-40 dino oil and the same at 100 miles. Both of those oil changes are to remove any metal filings, etc. from the oil/filter that inevitably show up in a new engine. Then use whatever you like.
Modern rings seat with minutes or a few miles. Some people like to keep the rpms low and fluctuate rpms for the first 500 miles of driving, but I don't feel that's necessary. Race engines have no problems seating rings and all they get is a cam break-in period with flat tappet or solid roller lifters. Hydraulic rollers require no cam break-in period.
For initial start-up, I use a cheap 30 weight oil. First change a 10-40 dino oil and the same at 100 miles. Both of those oil changes are to remove any metal filings, etc. from the oil/filter that inevitably show up in a new engine. Then use whatever you like.
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Engine break in question.
Question, I hope that the first paragraph of priming the pump and the initial "first running" should be done by the shop doing the work. Now, if I call them up and ask what they will do to for the initial start up and the say nothing, should I request that they do what you have stated. I spent a bunch of loot for this and I want it to go perfect.
actually I just called the guy doing the work and he told me that all I had to do is change the oil every 3000 miles after I get the truck back, no other kind of info. Should I take his word for it? He told me the place he gets the motors does the priming on the dyno testing. I just don't want to get screwed on this. I guess regardless of what he says, I will change the oil twice within 200-300 miles w/ 10-40 and after that put Havoline 10-30 in it. Does this sound ok? Thanks for your input.
Nate"hurry up and get me my truck back"Kittle
oh, what is 1/40 dino oil? thanks again
actually I just called the guy doing the work and he told me that all I had to do is change the oil every 3000 miles after I get the truck back, no other kind of info. Should I take his word for it? He told me the place he gets the motors does the priming on the dyno testing. I just don't want to get screwed on this. I guess regardless of what he says, I will change the oil twice within 200-300 miles w/ 10-40 and after that put Havoline 10-30 in it. Does this sound ok? Thanks for your input.
Nate"hurry up and get me my truck back"Kittle
oh, what is 1/40 dino oil? thanks again
Last edited by Nate1; Feb 7, 2003 at 02:51 PM.
Postmaster
Joined: Aug 2001
Posts: 2,882
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From: Nevada
Engine break in question.
Sounds like the cam break-in is being taken care of by the rebuilder.
10-40 dino oil is conventional 10-40 weight motor oil. Dino (for dinosaur) is often used in conversations about motor oil to separate it from synthetic oils such as Mobil 1.
10-40 dino oil is conventional 10-40 weight motor oil. Dino (for dinosaur) is often used in conversations about motor oil to separate it from synthetic oils such as Mobil 1.
