Supercharger bolt length gen 3

[sseilmnop]

Anyone know the bolt length of the Gen 3 supercharger?

Gen 5 L32 supercharger bolts
M8x1.25x140 (1)
M8x1.25x120 (1)
M8x1.25x80 (1)
M8x1.25x45 (7)

Gen3 L67 supercharger bolts
M8x1.25x??? (1)
M8x1.25x??? (1)
M8x1.25x80 (1)
M8x1.25x45 (7)

[GR8racingfool]

GenIII M90's:

For the snout to the case:

You will need:
9 - M8x1.25x55 bolts.

If your blower is machined, and has the outlet moddified and the two lower bolt boss's are gone then you will need 7 of the above metric bolts, and 2 M8x1.25x45 bolts so they dont poke into the outlet.

If you want the same metric bolts to bolt the GenIII M90 to the lower intake manifold (LIM) then you will need the following for a GenIII M90 with NO intercooler under it:

*NOTE:*
You will no longer have the bolt with the stud ontop of it that hold the EGR shield in place if you go this route.

1 - M8x1.25x85
1 - M8x1.25x65
8 - M8x1.25x45

If you want to also hold the bracket that holds the MAP and some EVAP stuff to the back of the M90 with the same metric bolts then you will need 2 additional M8x1.25x45 bolts. Not required, but just to keep all the bolts the same.

GenV M90's:

For the snout to the case:
If you want to remove the T40 Torx bolts and install something close, then you would want a button head bolt for looks.

You will need:
8 - M8x1.25x45 bolts.

With a button head bolt, they dont have a whole lot of material on them for high torque so be careful or buy socket head bolts instead.

If you want the same metric bolts to bolt the GenV M90 to the lower intake manifold (LIM) then you will need the following for a GenV M90 with NO intercooler under it:

1 - M8x1.25x140
1 - M8x1.25x120
1 - M8x.125x80
7 - M8x1.25x40

If you would also like to replace the PCV cover bolts, as well as the vacuum 3 way that sits ontop of the blower with stainless socket head bolts, then you will need:

4 - M8x1.25x20 metric bolts.

For those with a GenIII M90 and still retain the stock fuel rails, you can also get the same bolt above for the fuel rails that bolt to the top of the blower, you will only need one additional bolt. GenV guys...you dont have a boss so dont sweat it.




From here:
ClubGP Message Forum troubleshooting

^about the only thing worth while at CGP is old threads that were useful.

~F~

[sseilmnop]

Thanks for info.

I second the only useful thing about clubgp.