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Old 10-09-2013, 07:27 PM   #1
Lawmaster
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Default Windsor 5 lt misfiring

Hi, I have just completed my XW GS after 3 year rebuild, the engine is from a 1990 F series. I have rebuilt heads were rebuilt and I am running a Holley 650 square bore. Also HEI distributer. my problem is it idles smooth at 650rpm, as soon as i accelarate engine shakes and vibrates. Once I am at around 1500 it runs smooth again.
I have tried all adjustments on carby, timing and advance are working, tonight I sprayed intake wioth engine start to detect leak no change.

Can anyone suggest a cause??

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Old 10-09-2013, 07:30 PM   #2
Lawmaster
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Default Re: Windsor 5 lt misfiring

More information, I am running a edelbrock 2122 cam which required me to change firing order to early configuration.
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Old 10-09-2013, 07:35 PM   #3
MrEL
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Default Re: Windsor 5 lt misfiring

Which harmonic balancer have you got on it?
Is a 5.0 or 5.8?
A 1990 F series 5.0 will require a 50oz balancer not a 28oz like early model stuff.
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Old 10-09-2013, 07:44 PM   #4
Lawmaster
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Default Re: Windsor 5 lt misfiring

Hi, it is a 5.0 litre, I am running the original F series balancer.
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Old 10-09-2013, 07:54 PM   #5
irish2
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Default Re: Windsor 5 lt misfiring

Quote:
Originally Posted by Lawmaster View Post
Hi, it is a 5.0 litre, I am running the original F series balancer.
Did you also use the flex plate from the F truck? Both need to be balanced the same.
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Old 10-09-2013, 08:09 PM   #6
Lawmaster
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Default Re: Windsor 5 lt misfiring

I am not sure of the origin of the flywheel, It came with engine and houses the twinplate clutch, I did not get the flywheel balanced!
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Old 10-09-2013, 11:07 PM   #7
ozrunner
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Default Re: Windsor 5 lt misfiring

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Old 25-09-2013, 08:28 PM   #8
Lawmaster
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Default Re: Windsor 5 lt misfiring

flywheel.JPGCan you help me identify the flywheel, the flywheel does not have the billiot typical of 23 and 50 oz wheels. it only has a elongated broaching or groove cutout, I will try to post photo when I work out how.

Last edited by Lawmaster; 25-09-2013 at 08:38 PM.
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