1989 mustang motor knock - Mustang Evolution

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Old 06-30-2011, 10:13 PM   #1
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1989 mustang motor knock

So 1st off thanks for taking a look at my post I have a 1989 mustang 5speed was a 2.3 did a 5.0 swap efi did swap had real problem with the starter ended up I had got the wrong bell house had the one for a 1994 so change that and it everything started working drove the car around got about 3000 miles out of it then I start having a problem with the clutch would get to hard then feel like it's no clutch (I have a adjustable clutch cable so I would adjust it as needed almost everyday) one day I was driving to work a I go to push the clutch in and it feels a little funny but with the problem I had I didn't think to much of it got to work ok started to drive home from work and at a light go to shift in to and the clutch goes to the floor loud metal sound cut motor off quick I had no clutch at all it was on the floor so got it towed to my house and took everything part took the tranny out and throw out bearing went into the clutch so got a new clutch kit (it broke because I used the wrong clutch arm Put the one from 1994 bell house changed it to the right one) put everything back together and got a loud knocking so I thought it was the clutch so took it apart again check everything out no marks on metal put everything but together again and still got the noise looked around the Internet someone post about the rod knock took covers off all rods seem to be in place want to know what could changing the clutch do to make the motor knock or I'm I just having bad luck Thanks if you can help
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Old 06-30-2011, 11:01 PM   #2
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Quote:
Originally Posted by kbolden50
So 1st off thanks for taking a look at my post I have a 1989 mustang 5speed was a 2.3 did a 5.0 swap efi did swap had real problem with the starter ended up I had got the wrong bell house had the one for a 1994 so change that and it everything started working drove the car around got about 3000 miles out of it then I start having a problem with the clutch would get to hard then feel like it's no clutch (I have a adjustable clutch cable so I would adjust it as needed almost everyday) one day I was driving to work a I go to push the clutch in and it feels a little funny but with the problem I had I didn't think to much of it got to work ok started to drive home from work and at a light go to shift in to and the clutch goes to the floor loud metal sound cut motor off quick I had no clutch at all it was on the floor so got it towed to my house and took everything part took the tranny out and throw out bearing went into the clutch so got a new clutch kit (it broke because I used the wrong clutch arm Put the one from 1994 bell house changed it to the right one) put everything back together and got a loud knocking so I thought it was the clutch so took it apart again check everything out no marks on metal put everything but together again and still got the noise looked around the Internet someone post about the rod knock took covers off all rods seem to be in place want to know what could changing the clutch do to make the motor knock or I'm I just having bad luck Thanks if you can help
Piston rod knock. Not push rod knock. Oil look metallic???
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Old 07-01-2011, 09:11 AM   #3
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No oil looks clean I have to take the motor down to the block to see if that's the problem right or Is it a way I can test it with it together
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Old 07-01-2011, 11:32 AM   #4
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Quote:
Originally Posted by kbolden50
No oil looks clean I have to take the motor down to the block to see if that's the problem right or Is it a way I can test it with it together
If you can drop the oilpan you can check the rod bearings.
Take the oil filter off. If there is metal in there you will easily see it. Hit it with a light and it will look very metallic
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Old 07-01-2011, 11:57 AM   #5
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Ok looked at the dip stick in the sun and it looked ok no flake to it but I will look at the oil filter it sounds like more at the front of the motor if that helps thanks for the reply do you think it has to do with the clutch install i did or is that unlikely to have to do with it
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Old 07-01-2011, 12:08 PM   #6
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I don't think the two have anything to do with each other
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Old 07-01-2011, 12:58 PM   #7
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Ok thank you for the info I will look it the things tonight and tell you how it goes
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Old 07-01-2011, 03:38 PM   #8
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How is the knock, does it do it nonstop? Get louder at higher rpm? How was oil pressure when this occurrd
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Old 07-01-2011, 03:43 PM   #9
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Originally Posted by Stang.racr
How is the knock, does it do it nonstop? Get louder at higher rpm? How was oil pressure when this occurrd
All good questions
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Old 07-01-2011, 04:51 PM   #10
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When I start it it's a loud knocking and I cut it right back off haven't tried to drive it really haven't let it run when I heard the knock I cut it right off should I let it run I didn't want to brake something more than it was oil was good when I drove it last
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Old 07-01-2011, 07:05 PM   #11
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Are you sure the flywheel is not hitting the starter ..... I would let it run long enough to atleast verify where the noise is occurring and maybe have a knowledgable car guy listen and compare your theories
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Old 07-01-2011, 07:47 PM   #12
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Its not the starter one of the 1st things I looked in to going to let it run a little today and see what happens hope for the best I'm going to video it and will post a link to the video
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Old 07-01-2011, 10:20 PM   #13
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Re: 1989 mustang motor knock

Your clutch issues may have taken out the thrust bearing in the engine or cracked the flywheel.
Or, you may have a cracked or broken harmonic balancer.
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Old 07-01-2011, 11:34 PM   #14
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Looked at the oil again it looked good no flakes
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Old 07-01-2011, 11:41 PM   #15
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Re: 1989 mustang motor knock

dam thats loud!!!

dont sound like piston knock.

hard to tell without being there in person. almost sounds like one cylinder is open header lol
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Old 07-01-2011, 11:52 PM   #16
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That's why I didn't want to run it hope the video gives more info
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Old 07-02-2011, 12:07 AM   #17
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Sounds to me like the flywheel is out of balance with the harmonic balancer. There are different ounce balancers for these engines. If you throw the balance of either of these off it will literally destroy your engine.
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Old 07-02-2011, 12:20 AM   #18
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Could it be because I got it resurfaced and they did it wrong the motor shakes like crazy
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Old 07-02-2011, 12:39 AM   #19
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What does it do to your motor I'm not going to start it no more
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Old 07-02-2011, 06:18 AM   #20
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It is a broke flywheel or something in that area hitting
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Old 07-02-2011, 08:24 AM   #21
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If the balance is way off then that vibration that is obvious will cause excess wear on bearings and loosen things up. It is possible that something was screwed up on the resurface, but it would have to be really bad, like it was dropped and bent. It could be possible that the input shaft of the tranny was bent when it self destructed.
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Old 07-02-2011, 09:06 AM   #22
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Re: 1989 mustang motor knock

That sounds like a broken rod or crankshaft to me.
Time to take it apart and have a look.
I'd start with pulling the transmission and checking the clutch and flywheel.
If you find nothing there, then you will probably need to pull the engine or at least lift it enough to get the oil pan off so you can take a look inside.
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Old 07-02-2011, 09:10 AM   #23
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Quote:
Originally Posted by Trojan Horse
That sounds like a broken rod or crankshaft to me.
Time to take it apart and have a look.
I'd start with pulling the transmission and checking the clutch and flywheel.
If you find nothing there, then you will probably need to pull the engine or at least lift it enough to get the oil pan off so you can take a look inside.
Think you should do as he says
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Old 07-02-2011, 10:32 AM   #24
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Agree with trojan
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Old 07-02-2011, 02:07 PM   #25
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What you guys think about the scatter shield hitting the flywheel it had flex to it when I put it in
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Old 07-02-2011, 02:08 PM   #26
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Going to take it apart today and tell you how it goes
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Old 07-02-2011, 02:09 PM   #27
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Quote:
Originally Posted by kbolden50
What you guys think about the scatter shield hitting the flywheel it had flex to it when I put it in
Check for scratches on it
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Old 07-02-2011, 02:25 PM   #28
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Just rebuild it
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Old 07-02-2011, 02:39 PM   #29
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If I had the money I would rebuilt it but not the case
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Old 07-03-2011, 01:03 PM   #30
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I had a post also on allfordmustang this guy was telling it's my scatter shield hitting my flywheel he had the same problems I'm going to change that and see what happens
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Old 07-03-2011, 01:23 PM   #31
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Re: 1989 mustang motor knock

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Originally Posted by kbolden50 View Post
I had a post also on allfordmustang this guy was telling it's my scatter shield hitting my flywheel he had the same problems I'm going to change that and see what happens
Do you mean the block plate or bellhousing?
Scattershield is the common name of an SFI approved steel bellhousing.

Anyways I don't think that is what it is, but maybe it is.
You will be able to tell when you remove the bellhousing.
Before you remove the flywheel, carefully (so you don't cut or pinch your fingers) take hold of the flywheel and see if it has any wiggle or play to it.
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Old 07-03-2011, 01:30 PM   #32
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Re: 1989 mustang motor knock

I just listened to your vids again several times.
I hear lots of rattling and ticking in addition to the knock.

You removed the valve covers and checked the pushrods correct?
Are you positive you didn't have a bent pushrod?
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Old 07-03-2011, 07:16 PM   #33
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Re: 1989 mustang motor knock

and I thought my car had problems lol, no useful advice here other than listen to both trojan and texas, both seem extremely knowledgeable!
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Old 07-03-2011, 07:36 PM   #34
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Yes they looked good when I took it off I was thinking that seems like a small thing make a real big problem but he was telling me stuff that I didn't post that was happen to my car and it sounds like the same thing I'm going to check the flywheel when I take it apart most likely tomorrow
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Old 07-03-2011, 09:27 PM   #35
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Quote:
Originally Posted by kbolden50
Yes they looked good when I took it off I was thinking that seems like a small thing make a real big problem but he was telling me stuff that I didn't post that was happen to my car and it sounds like the same thing I'm going to check the flywheel when I take it apart most likely tomorrow
Once Trojan said broke crank I've been thinking that's it. Hopefully not though cause you will need to rebuild

And just to make positive sure it isn't something weird I would remove the drive belt to make positive sure it's the motor.
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