Look to buy a used engine help!
02-15-2018, 05:12 AM
#1
Look to buy a used engine help!
Hi recently I’ve been looking for a used engine due. Long story short I did a leak down test recently on my 03 ap1 and read 47 percent leak from cyclinder number 1 and the rest were 7-10 percent leak. It’s coming but the exhaust side. I have been considering pulling the head and inspecting but found a 02 ap1 engine locally on Craigslist. https://sacramento.craigslist.org/pt...474910308.html
the seller shows the compression test and says leak down was performed and came out with good results.
I asked the seller to perform a leak down in front of me before I purchase the engine.
My main concern is about the compression the seller was able to get from the test. Are they healthy numbers? I read that there should only be a 5-10 percent variation between each cyclinder. I also read that anything below 220 is low for an ap1. But considering that this is a 16-17 year old motor with 90k on it there should show some signs of wear.
Thank you in advance.
the seller shows the compression test and says leak down was performed and came out with good results.
I asked the seller to perform a leak down in front of me before I purchase the engine.
My main concern is about the compression the seller was able to get from the test. Are they healthy numbers? I read that there should only be a 5-10 percent variation between each cyclinder. I also read that anything below 220 is low for an ap1. But considering that this is a 16-17 year old motor with 90k on it there should show some signs of wear.
Thank you in advance.
02-15-2018, 01:28 PM
#2
Your engine may need nothing more than lapping a valve seat. Pull head, lap valve, reinstall. Investigate first before scraping it and getting a whole new motor.
210 even across the board is very healthy. Like you heard, even is more important than outright number.
210 even across the board is very healthy. Like you heard, even is more important than outright number.
02-15-2018, 04:44 PM
#3
Probably just need some head work, much cheaper than getting a new engine. The head isn't that hard to take off, and there's plenty of good machine shops that can fix it. I would try doing a valve adjustment first and seeing if that helps, if it does you may have dodged a bullet. Worst case scenario, you need new guides and new valve seats and two new valves. Machine work + parts would run you around $600 R & R the head would be another $500 which is a third of what a used engine costs and you'd have a fresher head than from a used engine.
02-16-2018, 12:01 AM
#5
soonds good thank you for the advice. My main concern is that the engine I have has been turbo’d before I bought the car. I didn’t know until a month into my ownership of the vehicle. I have had the car for a while now though. Should I worry about the block have some type of damage? Have done a pressure test in my coolant system and head gasket seem fine as of right now.
02-16-2018, 12:06 AM
#6
Probably just need some head work, much cheaper than getting a new engine. The head isn't that hard to take off, and there's plenty of good machine shops that can fix it. I would try doing a valve adjustment first and seeing if that helps, if it does you may have dodged a bullet. Worst case scenario, you need new guides and new valve seats and two new valves. Machine work + parts would run you around $600 R & R the head would be another $500 which is a third of what a used engine costs and you'd have a fresher head than from a used engine.
02-16-2018, 12:10 AM
#7
I absolutely ageee with you that a used engine is a gamble. I wanted to save my engine as well. I was thinking about purchasing the used engine before seeing/hearing another leak down test of the used engine in person. And then trying to refresh that used engine while mine is in my car. But then again I may be overthinking it and go the cheaper route before any extreme measures are taken thank you
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02-16-2018, 12:12 AM
#8
Probably just need some head work, much cheaper than getting a new engine. The head isn't that hard to take off, and there's plenty of good machine shops that can fix it. I would try doing a valve adjustment first and seeing if that helps, if it does you may have dodged a bullet. Worst case scenario, you need new guides and new valve seats and two new valves. Machine work + parts would run you around $600 R & R the head would be another $500 which is a third of what a used engine costs and you'd have a fresher head than from a used engine.
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