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Old 02-11-2010   #16
DrMango
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Default Re: About to turn over my rebuilt RB20

I will take a video up close on the engine for a better sound tomorrow when Im back at friends house. I know the idle is high. Its something I didnt expect. I will change the idle first thing in the morning before I start it again.
It was idling at ~1500

Off throttle vacuum?

Kyle
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Old 02-11-2010   #17
mcfly
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Default Re: About to turn over my rebuilt RB20

i mean, start it. let it warm up and then hit the road with plenty of off throttle decel
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Old 02-11-2010   #18
DrMango
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Default Re: About to turn over my rebuilt RB20

Sure. Sounds good but I should let it get to full running temp before I move though?

Any ideas on the ticking?
I will turn the idle down like I said, and then is it safe to let it idle and see if the sound gets quieter?

Kyle
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Old 02-11-2010   #19
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Default Re: About to turn over my rebuilt RB20

Quote:
Originally Posted by DrMango View Post
Any ideas on the ticking?
What, are you ignoring me now ?....lol.

Look back a page........

Quote:
Originally Posted by Allan74
I hear the TICKING....

Collapsed Lifter ? or just Lifter noise ?

You didn't put an Oil Restrictor into the block during the rebuild did you ?
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Old 02-11-2010   #20
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Default Re: About to turn over my rebuilt RB20

Quote:
Originally Posted by Allan74 View Post
I hear the TICKING....

Collapsed Lifter ? or just Lifter noise ?

You didn't put an Oil Restrictor into the block during the rebuild did you ?
When I read your post I had only seen the Collapsed lifter part.

No oil restrictor installed.
It could be the lifters and that was my first guess but I worried so I shut it down to make sure before I let it idle more.
Safe to let it idle more(with idle turned down) and see if it gets quieter?

Kyle
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Old 02-11-2010   #21
Zacho
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Default Re: About to turn over my rebuilt RB20

My lifters made some ticking until I got it up to running temp first time. After that all is well
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Old 02-11-2010   #22
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Default Re: About to turn over my rebuilt RB20

As long as you have sealed/seated the rings without too many warmups/cooldowns....otherwise, you will be chasing your tail, one problem after another.
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Old 02-11-2010   #23
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Default Re: About to turn over my rebuilt RB20

try for the next start to be a drive. cold starts are hell on an engine as you have cold enrichment dumping in fuel which is going directly into the oil at the moment. Not like a river but fuel gets passed the rings until they bed in.

just food for thought.
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Old 02-11-2010   #24
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Default Re: About to turn over my rebuilt RB20

now that I think about it some of the factory engines I've replaced have had really noisy shitty sounding head noise until they warmed up completely

probably just the lifters taking a bit to pump up
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Old 02-11-2010   #25
DrMango
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Default Re: About to turn over my rebuilt RB20

Quote:
Originally Posted by mcfly View Post
try for the next start to be a drive. cold starts are hell on an engine as you have cold enrichment dumping in fuel which is going directly into the oil at the moment. Not like a river but fuel gets passed the rings until they bed in.

just food for thought.
Its sitting in a warm garage so its probably safe to just start it and wait like 1 minute then start driving then wouldnt it be? That way I can safely do as you say..

Kyle
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Old 02-11-2010   #26
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Default Re: About to turn over my rebuilt RB20

Quote:
Originally Posted by Allan74 View Post
As long as you have sealed/seated the rings without too many warmups/cooldowns....otherwise, you will be chasing your tail, one problem after another.

I didnt rebuild the top end so Ill assume that the head should be good unless I did some damage in that video the way I started the engine. Do you think there might have been something I may have missed?

Kyle
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