How to test a pulled rebuilt engine
#1
Can't stop breaking my rx
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How to test a pulled rebuilt engine
Ok guys I got this engine in my house that is suppose to be rebuilt. My question is, can I test it? I know its been pulled apart from the paint job. I found out from that a compression cant be checked unless its installed. It was done at B&B in Sacramento California, but I here he gets a lot of parts used. I was told by a guy that he might not actually resurface the housing like he says he does. Anyways any help on testing this engine would be great because I can still give it back. Also it was sitting around for a while ourside the car.
I paid 1.4k for the engine and the shell which is very clean.
Thanks and God Bless,
Zach
I paid 1.4k for the engine and the shell which is very clean.
Thanks and God Bless,
Zach
#2
Rotary Enthusiast
Originally Posted by DJGeQue
Ok guys I got this engine in my house that is suppose to be rebuilt. My question is, can I test it? I know its been pulled apart from the paint job. I found out from that a compression cant be checked unless its installed. It was done at B&B in Sacramento California, but I here he gets a lot of parts used. I was told by a guy that he might not actually resurface the housing like he says he does. Anyways any help on testing this engine would be great because I can still give it back. Also it was sitting around for a while ourside the car.
I paid 1.4k for the engine and the shell which is very clean.
Thanks and God Bless,
Zach
I paid 1.4k for the engine and the shell which is very clean.
Thanks and God Bless,
Zach
#6
Eats, Sleeps, Dreams Rotary
Originally Posted by Houstonderk
you could slap the tranny on so you could jump the starter. I did it before.
ive done that, just add like 5 psi to the numbers you get beacause itz cold...
#7
Nipples
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That's cool, I'm DJgeque's friend. His mechanic said you can't get a good indication of the compression unless the engine is at operating temperatures. My dad said to put the engine into an oven, then test it.
He was kidding.
fw88, where did u get the idea to add 5 psi? I'm just wondering if it something you came up with or something you read before.
I also like the idea of listening to equal huffs and huffs. We're pretty sure the apex seals are there atleast..
He was kidding.
fw88, where did u get the idea to add 5 psi? I'm just wondering if it something you came up with or something you read before.
I also like the idea of listening to equal huffs and huffs. We're pretty sure the apex seals are there atleast..
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#8
Eats, Sleeps, Dreams Rotary
i have herd, the diffrence between warm and cold compression is approx 5 pounds so, if the engine is just hooked to a starter and hasent been ran in a long time, 5 psi is cloase to the actuall real number, also 3 strong chungs from each rotor housing will deterimine it hasent eaten any apex seals...
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Dustin
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Dustin
#9
Lives on the Forum
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You can cold-test a rotary for compression and the results will be fairly accurate...you take away about 5psi from the cold test results. Because a rotary loses about 5psi compression when warm, as compared to when cold. IN my experience.
Bolt a trans and starter up and use a battery to crank it over. Be sure the throttle is open (if a manifold is installed) and remove a plug from the front and the rear.
www.rotaryresurrection.com ---> tech ---> compression test
Bolt a trans and starter up and use a battery to crank it over. Be sure the throttle is open (if a manifold is installed) and remove a plug from the front and the rear.
www.rotaryresurrection.com ---> tech ---> compression test
#10
Eats, Sleeps, Dreams Rotary
Originally Posted by felixwankel88
i have herd, the diffrence between warm and cold compression is approx 5 pounds so, if the engine is just hooked to a starter and hasent been ran in a long time, 5 psi is cloase to the actuall real number, also 3 strong chungs from each rotor housing will deterimine it hasent eaten any apex seals...
peace
Dustin
peace
Dustin
#11
I live in an igloo
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Best idea when the engine is out of the engine. I wonder how much it would jump around if you just tried turning it over on the floor, maybe leave it in the hoist?
Originally Posted by Houstonderk
you could slap the tranny on so you could jump the starter. I did it before.
#13
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Originally Posted by BlaCkPlaGUE
Best idea when the engine is out of the engine. I wonder how much it would jump around if you just tried turning it over on the floor, maybe leave it in the hoist?