Allison 6sp: Suncoast "whirring" spoolup

TowU4Free

#SecretSquirrel
Aug 27, 2011
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Trans gurus. Last dirt drag I went to used my dhd lock up box for the first time and noticed at the track after my first pass that when I would spool the transmission area would have a loud whirring sound just happen to power brake it tonight and I heard it again loud and clear you can also hear something when you cut the truck off that is spinning and making a small rattle inside the transmission everything shifts great no codes converter locks up fine any input on this guys? Nothing but problems here lately suncoast 1058 with billet stator
 

TowU4Free

#SecretSquirrel
Aug 27, 2011
457
2
18
Anybody? Spoolup is just like a loud whirrrr. the 1058 has the billet stator i know its not indestructible but i dont think ive beat on it that bad
 

TowU4Free

#SecretSquirrel
Aug 27, 2011
457
2
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Mike, thanks for the input, started last saturday. put new filter in when i did the springs sunday. still does it
 

Huffy67

New member
Dec 26, 2014
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Arkansas
Is there a possibility of the down pipe touching the firewall and the noise you're hearing is the turbo spinning? Mine was like that for a while, and while I didn't have the whirring, I DID have the spinning noise slowing down when I cut the truck off.


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Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
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Phoenix Az
That sounds like an exhaust leak prior to the turbo or something turbo related on the exhaust aide
 

TowU4Free

#SecretSquirrel
Aug 27, 2011
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I will inspect the downpipe connections I didn't see any soot there . stg2r is pretty fresh on there too
 

Huffy67

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Dec 26, 2014
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I bet the downpipe or exhaust is touching somewhere since the turbo is recent.


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TowU4Free

#SecretSquirrel
Aug 27, 2011
457
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Kyle are you speaking of the little tab on the bottom where it mounts to the engine? Mines never been bolted there. I'm going to do some investigating today
 

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