Cold motor compression results

Also known as badass Altima's
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rn240sx
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Cold motor compression results

Post by rn240sx » Mon Dec 03, 2012 2:01 pm

Junk yard 98 Altima ka motor ... Cranking with starter and battery wot .. I get 120, 120, 110, 110
Is this ok for a cold motor ??

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500hpKA240sx
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Post by 500hpKA240sx » Mon Dec 03, 2012 10:20 pm

ok for what? boosting no prolly not. daily driving sure
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Post by rn240sx » Tue Dec 04, 2012 8:27 am

500hpKA240sx wrote:ok for what? boosting no prolly not. daily driving sure
its for my nephew.. he overheated his other motor petty bad beyond repair and this is the ONLY used motor i could find locally at a junk yard… and thats what it tested cold.
I just don't wana clean it, swap parts and drop it in to find out that it does not work… But yea it just going to be his daily driver…

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Post by 500hpKA240sx » Tue Dec 04, 2012 10:57 am

well if its going to be out of the car then just pull the oil pan and pull the pistons and re-ring them wouldnt take no time. but yea for a daily it would be ok to drive on but he may use a little oil but nothing horrible.
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Post by rn240sx » Tue Dec 04, 2012 3:56 pm

500hpKA240sx wrote:well if its going to be out of the car then just pull the oil pan and pull the pistons and re-ring them wouldnt take no time. but yea for a daily it would be ok to drive on but he may use a little oil but nothing horrible.
i was told to do a leak down test and see if its leaking anywhere… They said while a compression test will show how much its compressing, it does not show how much of that compression its holding …
I put some oil in the last two cylinders that were 110 each and it stayed at 110 psi.. I have my compression tester hose but i think its only a 1 way valve and it only allows air flow from the motor to the gauge and not the opposite direction from the compressor to the chamber which is what i need…

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