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Tips/advice building first motor in garage

 
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  #11 (permalink)  
Old 18 May 2018, 02:28 pm
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Default Re: Tips/advice building first motor in garage

Quote:
Originally Posted by kcabe1 View Post
I know how to use plastigage, I know about cleanliness, and I know about chasing threads, but what should I know about the rest? And plastigage is just a double check method, but you should always use a micrometer, is that correct? I also know about torque to yield vs torque to spec.
IMO micrometers and spring gauges are great for checking used parts for taper, out of round, etc. ....or if you buy junk like an eagle crank since they are known to polish journals into an hourglass shape.

i borrowed micrometers since they each only measure an inch so by the time you get a 1", 2", 3", & 4" calibrated micrometers you can trust, like a matco or starrett, you're going to be spending a good amount of cash.

i do not think you'll be measuring bearing clearances with a micrometer. you'd need an actual bore gauge and about 10 years of practice to be more accurate than the plastigage. plastigage is IMO accurate enough that if you really pay attention and do every journal you can see which strips are fattest and which are narrowest and then mix and match move around the bearing halves to try to get them more balanced out.

"building a motor" is very vague. you may get better advice if people knew are you using new, freshly machined parts? are you just going to put in new rings and bearings, cam, bolt on's n stuff?
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Old 26 Jul 2018, 01:04 am
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Default Re: Tips/advice building first motor in garage

I know this is a bit of an old post but I'll add just in case... :

If you are not planning on having your block & heads dipped you might want to flush the radiator out. You can get clean water in place you can't get a hose. I remove the thermostat I put a hose in the upper hose, start the car and let it idle. Adjust the flow of the hose to match the flow out of the thermostat housing. Run it until it runs clear and then some more.

Shop rags, lots of them. A air compressor is handy for blowing out things. Be mindful of where you are blowing. You will spray crap on your clean parts.

Brake clean and degreaser (he purple stuff at Walmart is great. Both are great to wash the crud off. Some kind of container to wash and soak parts in. Large totes are great. I wash everything with Dawn dish soap for the final clean. This goes for the heads and the block too. Especially if you have it machined.

Penetrating oil for rusty fasteners. Spray the rusty crusty stuff a few days in advance.

I like to use sheets of card board to hold hardware. I draw a part out line and make a hole just large enough to hold the fastener.

Zip lock bags, a note book and a Sharpie marker to bag and ID misc stuff.

It goes without saying, a shop manual. You will find the torque spec's for fasteners and good info on how to get some things out that seem impossible. And it will tell you what you need for tools. Read it ahead of time and make a list of what you will do.

Measuring stuff has been brought up so....

If you have a digital camera grab it and take a shit load of pictures of things as you go. You can reference it when you reassemble. And you can share your progress here.

Just as question here if you get stumped. No question is stupid. But it is stupid not to ask questions.

I have rebuilt and replaced 30-40 motors over the years. I was a mechanic for many years. Mild to wild builds. My buddy has a machine shop. We trade work. If you know anyone with some mechanical experience latch on to them to help you. It pays to know people. Ask them for help!

And most importantly DO NOT RUSH! It will bite you in the ass. Nothing sucks like forgetting to tighten something or dropping hardware in bad places.

Cover your engine and parts when you are not working on it. I have a ton of old sheets, blankets and towels I find at yard sales. When they get crapped up and to messy to clean just toss them.

Sorry for the ramble. It's late and I am board and thought I would had a few things. I am sure I could thing of a few more things but it is late and I am

Larry
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