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351 C engine sound (video)


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Hi,

 

Please some advice from the members & pro's

 

1 - what do you think about the engine sound? bad/normal

2 - is the sound of the electric Holley fuel pump normal, it's a awfully sound (just a little model airplane)

 

[video=youtube]

 

Mach 1 saved from scrap yard and soon back on the road.

 

THANKS,

eddyw

:D

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As I can hear the engine sounds normal, but I think it's the compressor for the air conditioning there are making a little bit noise, I think there is nothing to worry about. The fuel pump sounds really loud, I don't think that's normal. It should not be so loud, if it was me then I could'nt live with it.

Daniel ::thumb::

 

Pro-Touring 1973 Mustang named ''Creator'' ... :P

Under construction!!

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As I can hear the engine sounds normal, but I think it's the compressor for the air conditioning there are making a little bit noise, I think there is nothing to worry about. The fuel pump sounds really loud, I don't think that's normal. It should not be so loud, if it was me then I could'nt live with it.

 

By the first time engine running the fuel pump wasn't so noisy but i was running out of fuel(fuel tank empty)and filled back with fuel... since that happen... a lot of noise.

Maybe some air bubbles in the fuel pump or...?

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I don't think it's air bubbles. When you ran empty of gas, the fuel pump might have sucked some dirt from the gas tank. Have you tried to tear it apart and look for dirt in the filter? That could maybe be the reason. I would try that as the first thing. Clean it and look what happens when you start it up again :)

Daniel ::thumb::

 

Pro-Touring 1973 Mustang named ''Creator'' ... :P

Under construction!!

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I agree with Don the pump is bad. Electric pumps do not like to be run dry. Seems like some belt/accessory noise as well, hard to say from a video. You might try removing one belt at a time to see if the noise lessens or stops. Good looking car. Chuck

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-the compressor for the air conditioning is making noise, i filled the compressor with fresh oil but is not working for the moment(no cooling gas in the system).

Without pulley belt a lot better engine sound.

 

-the pump is a blue holley comp.pump with regulator:

http://www.summitracing.com/int/parts/hly-12-802-1/overview/

 

they comments say's "Very noisy but it really works" & "loud"

 

Maybe a normal sound for this fuel pump (awful for me, i look what i can do for a quiet sound)

I have mounted a filter between the new fuel tank and pump and also one between the pump and regulator, all the lines/filters/fuel sender/fuel tank are new.

 

 

I try to make a copy of the Mustang in attachment.

 

Thanks,

eddy

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The AC compressor is not turning. Pulley is, but the compressor/clutch itself is not engaged. I don't hear any noise there.

Sounds like an alternator whine to me, varies with RPM.

 

Is the fuel pump mounted on rubber or directly to a hard surface? It does sound a bit loud to me, but I have heard other pumps that are loud like that. I do not have one of my own to compare to, except a small Purolator electric pump on the Tiger that is mounted underneath and behind the passenger seat. It is not a very noisy one.

Pete - MotoArts Decals and Signs

'71 Sportsroof 351C-4V/4-speed - FINALLY under construction - no, wait, on hold again...

'90 Mustang 7-Up 5.0 ragtop, rolling beater - SOLD

'66 Sunbeam Tiger Mk.IA, survivor

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The AC compressor is not turning. Pulley is, but the compressor/clutch itself is not engaged. I don't hear any noise there.

Sounds like an alternator whine to me, varies with RPM.

 

Is the fuel pump mounted on rubber or directly to a hard surface? It does sound a bit loud to me, but I have heard other pumps that are loud like that. I do not have one of my own to compare to, except a small Purolator electric pump on the Tiger that is mounted underneath and behind the passenger seat. It is not a very noisy one.

 

Hi,

 

-I mean more that metal sound... you are right only the pulley is turning around(also working electric cooling fan on radiator).

-I use this alternator:

http://www.summitracing.com/int/parts/tff-7078ndp/overview/

-The fuel pump is mounted on the rubber blocks(was included in the box), i gonna try bigger rubbers and Dynamat.

 

I really appreciate the honest good (and maybe bad) comments.

If anyone wants to add suggestions about the complete car(used parts or accessories or...), these suggestions are welcome.

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If the compressor pulley bearing is bad, I would think that you could remove the belt and wiggle the pulley to check for play. Freewheel rolling (spinning) the pulley with a bad bearing should be easy to hear with the engine off.

Pete - MotoArts Decals and Signs

'71 Sportsroof 351C-4V/4-speed - FINALLY under construction - no, wait, on hold again...

'90 Mustang 7-Up 5.0 ragtop, rolling beater - SOLD

'66 Sunbeam Tiger Mk.IA, survivor

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Holley blue won't be quiet until you'll switch it off. Same output can be had wit Mallory pumps and they're quiet pumps. Been using Mallory for six years and so far so good.

 

Non return style

http://m.summitracing.com/parts/maa-4140

 

Return style

http://m.summitracing.com/parts/maa-4142

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I had a holley red pump on my jeep. It was very loud.

 

Something doesn't sound right with the engine. I like the advice to remove each belt and see if the noise goes away. It doesn't sound like a 'bad' engine sound but something doesn't sound right to me.

'Mike'

73 Convertible - 351C/4V CC heads/4bolt/forged flat tops/comp 270/rhodes/mallory unilite/tri-power/hookers/glasspacks/c6/3.50 limited slip/Gear Vendors/Global West sub frames, strut rods and shelby style traction bars/ Rear sway bar/tilt steering (not original)

 

Pics of modifications included in: [button=http://www.7173mustangs.com/thread-1973-convertible--3335]My Garage[/button]

 

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Can you change to a mechanical high volume pump? That noise would make me crazy. Chuck

 

http://www.go-fast-parts.com/5733069.html

 

I have this pump new in the box, but the quality of this pump?

http://www.summitracing.com/int/parts/atx-60007

 

Maybe that Mallory pump!

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here's mine running with a big mechanical fuel pump and a solid roller lifter cam.

http://www.7173mustangs.com/gallery/1_01_07_15_8_53_18.png

 

"I love my Hookers!" and "Get some Strange" probably have a different connotation to non automotive enthusiasts!

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Sounds like gear whine to me. Do you have a gear drive timing set? What cam (billet? Steel?) and what distributor gear? Maybe pull the distributor and see if the gear is getting unhappy.

1973 Mach 1 Q code 351 4V, 9A paint, standard interior, 3.50 rear, C6 trans.

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Try this: crank the car and warm it up then with it running remove the fuel pump fuse and see what you think. The engine will fun for a short time till the fuel in the bowl runs out but it will let you distinctly hear your engine and not the pump.

I would make sure the pump has rubber insulators and has rubber hose going between the outlet and hard line, not just hard lined

joe.

personally the pump is too loud for my taste.

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A cheapo mechanical fuel pump is good for 350hp. At least in my car anyways. Zero sound.

 

Is the belt for your power steering pump too tight? Might be the source of your engine noise.

Mike

__________________________________

Black 1985 GT

Yellow 1973 Mustang Mach 1

Black 2012 5.0 GT, 6-speed, Brembo brakes, 3.73's

Wimbledon White 1966 F-100 Shortbed Styleside, 390ci, Tremec 3550, FiTech EFI

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I had a whine exactly like that when my car had A/C. It was the adjuster pulley for the A/C belt. The bearing was shot and it would whine just like that, loud as hell. Check that, it's always a possibility.

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