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Supercharger Bolt Torque ??? by Lou6t4gto
Started on: 08-19-2013 04:35 PM
Replies: 4 (140 views)
Last post by: Lou6t4gto on 08-20-2013 12:29 AM
Lou6t4gto
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Report this Post08-19-2013 04:35 PM Click Here to See the Profile for Lou6t4gtoClick Here to Email Lou6t4gtoSend a Private Message to Lou6t4gtoEdit/Delete MessageReply w/QuoteDirect Link to This Post
I just went to" bolt down" the SC on my 3800. The Book says the "Torque setting" is 8 Pounds. Is that a misprint ? Why not just say "finger tight and a smidgen" ? HOW can it "seal" like that, My torque wrench doesn't want to really "Click" at 8 pounds. Would I be better off using an "INCH Pound" wrench ?
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sco77
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Report this Post08-19-2013 04:52 PM Click Here to See the Profile for sco77Click Here to Email sco77Send a Private Message to sco77Edit/Delete MessageReply w/QuoteDirect Link to This Post
You bolt it down at 17ft-lb, go around starting from the center in a criss cross pattern. Do your passes like 5lb, 8lb, 12lb, 17lb, 17lb, 17lb , turn the pulley with each pass to make sure it is not binding up.

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86 Fiero GT 4spd - L67 swap: VS cam, GenV. Needs exhaust (ETA 9/13) Build Progress
98 GTP - Some mods

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Lou6t4gto
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Report this Post08-19-2013 08:20 PM Click Here to See the Profile for Lou6t4gtoClick Here to Email Lou6t4gtoSend a Private Message to Lou6t4gtoEdit/Delete MessageReply w/QuoteDirect Link to This Post
17 iis more reasonable. I thought it was a little strange torqueing the intake to 11, but then 8 !? Is 11 correct for the intake manifold bolts ? it's an aluminum manifold, not plastic.
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sco77
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Report this Post08-19-2013 08:37 PM Click Here to See the Profile for sco77Click Here to Email sco77Send a Private Message to sco77Edit/Delete MessageReply w/QuoteDirect Link to This Post
11 is the correct torque for LIM, however with aluminum gaskets I went with 15lb on my Fiero 3800, original spec is for plastic gaskets... But you should be safe anywhere from 11-15, I went 11 on another 3800 engine 50k miles ago and it's still going strong with no leaks. Don't forget thread sealant for threads and anaerobic/GM assembly sealant for the corners.


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86 Fiero GT 4spd - L67 swap: VS cam, GenV. Needs exhaust (ETA 9/13) Build Progress
98 GTP - Some mods

[This message has been edited by sco77 (edited 08-19-2013).]

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Lou6t4gto
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Report this Post08-20-2013 12:29 AM Click Here to See the Profile for Lou6t4gtoClick Here to Email Lou6t4gtoSend a Private Message to Lou6t4gtoEdit/Delete MessageReply w/QuoteDirect Link to This Post
Where do the intake bolts thread INTO ? water jacket or just exposed to oil ? Forgot to look.
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