Flexplate backward?
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More Turbo
Joined: May 2014
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Flexplate backward?
man oh man do I feel stupid asking this. My 94 F250, 460, E4OD. Is it possible to put the flex plate in backwards? And if so, how could you tell?
Starts, runs,, drives...but,, have a intermittent rattle and slight grinding/whirring noise i haven't isolated yet.
Will crawl under it tomorrow after the rain stops and take a peek at it. But, am curious.
Thanks
Starts, runs,, drives...but,, have a intermittent rattle and slight grinding/whirring noise i haven't isolated yet.
Will crawl under it tomorrow after the rain stops and take a peek at it. But, am curious.
Thanks
Thread Starter
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More Turbo
Joined: May 2014
Posts: 587
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Confirmed flexplate is installed correctly with weight and lip ring facing the motor. Issue is a rattling sound on acceleration, and a whirring noise that comes and goes. Does not do it in park at idle. Tried power braking and does it a little bit, then seems to go away over 1500 or so rpms. Transmission was supported during removal and install. Torque converter never shifted, and motor to transmission skid together smoothly.
I am at a loss here. Truck runs fine even when making noise, and no problems on gauges. Help. Help.
Thanks
I am at a loss here. Truck runs fine even when making noise, and no problems on gauges. Help. Help.
Thanks
Logistics Pro
Joined: Aug 2010
Posts: 3,717
Likes: 585
From: Chillicothe
2wd or 4wd? If 4wd make sure the case is fully in 2hi. I did some trans work and some how managed to not get the stick back to the 2 hi spot all the way and had a whirring noise. Probably the case guts grinding themselves to death. But after a shift to 4hi and back to 2 hi it went away.
Thread Starter
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More Turbo
Joined: May 2014
Posts: 587
Likes: 73
2wd or 4wd? If 4wd make sure the case is fully in 2hi. I did some trans work and some how managed to not get the stick back to the 2 hi spot all the way and had a whirring noise. Probably the case guts grinding themselves to death. But after a shift to 4hi and back to 2 hi it went away.
Thanks
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Cargo Master
Joined: Oct 2011
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From: Kenner,La.
Mystery noise
What about checking the catalytic converters, they make some weird noises when the ceramic breaks up. Also check the belt tensioner that it is in the middle of it’s travel and not making metal to metal contact. That happened to me and drove me crazy before some mentioned it to me.
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Joined: May 2014
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Cat is new. Timing at 10°. I am almost starting to wonder if the cam is hitting the back freeze plug. Sounds weird but I originally put the plug in to deep, had to punch it back out a little bit. And wondering if back of cam is rubbing and hitting on it?
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More Turbo
Joined: May 2014
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Block bored .030. New pistons, rings, bearings, oil pump, seals,timing set, harmonic balancer, water pump, sending units, cam. Pretty much everything. Took my time to do it right.....I thought. Lol. Also deleted the air pump, and all plumbing to that. Banks exhaust into their stinger package, with a magna flow catalytic converter. Kept the EGR system. Truck runs great! Just got to figure out this rattle.
Logistics Pro
Joined: Aug 2010
Posts: 3,717
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From: Chillicothe
Does it do it from a dead stop? And how hard do you have to accelerate for it to make the noise? Full throttle, part throttle?
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More Turbo
Joined: May 2014
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if something was hitting the cam, I would think it would be constant, idle, free rev, accelerating since nothing makes the cam do anything other than spin.
Does it do it from a dead stop? And how hard do you have to accelerate for it to make the noise? Full throttle, part throttle?
Does it do it from a dead stop? And how hard do you have to accelerate for it to make the noise? Full throttle, part throttle?
Thread Starter
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More Turbo
Joined: May 2014
Posts: 587
Likes: 73
if something was hitting the cam, I would think it would be constant, idle, free rev, accelerating since nothing makes the cam do anything other than spin.
Does it do it from a dead stop? And how hard do you have to accelerate for it to make the noise? Full throttle, part throttle?
Does it do it from a dead stop? And how hard do you have to accelerate for it to make the noise? Full throttle, part throttle?
Logistics Pro
Joined: Aug 2010
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From: Chillicothe
Do you happen to know what pistons were used like brand and part number? Was the block resurfaced at all? Some cheap aftermarket over bore pistons have the crown height shortened with the theory that the lower compression will offset the overbore. But this opens the quench gap and can lead to detonation.