IAG Performance | 1203 Baltimore Blvd. Westminster, MD 21157 | Ph: 410-840-3555 | www.iagperformance.com
1
IAG Performance EJ25 Closed Deck Install Guide
[v.13.1]
Please Note* This document is intended for IAG Short Blocks that shipped between 4-11-2018 to 4-19-2018. If your block shipped prior to these dates or after
these dates different torque specs are required and there are supporting documents available with those specs.
•
Shipped Prior to 4-11-2018 use Closed Deck Document
30TU
v.13
U30T
•
Shipped between 4-11-2018 to 4-19-2018 use Closed Deck Document
30TU
v.13.1
U30T
•
Shipped after 4-19-2018 use Closed Deck Document
30TU
v.14
U30T
1.
U
Case Bolts
U
- The case bolt flange diameter should be
.745”. If the case bolt flange diameter is larger, the flange
will need to be ground down to spec. Be careful not to
damage the closed deck plug threads when
installing/torqueing the case bolts.
2.
U
Plug Install
U
– Each plug has a location identifier
machined into it that corresponds to the deck surface.
Please make sure to install the plug into the correct deck
hole. Example (L1 plug installs in L1 deck location). Each
plug is pre-lubed with a moly lubricant. This should be
adequate to reinstall unless the plug holes or plugs were
cleaned and lube has been removed. The plugs will start
and install by hand, requiring no effort until seating in the
block.
*IF
U
ANY
U
RESISTANCE IS FELT - ** STOP **
If you experience resistance, back out the insert and
inspect the threads on both parts; clean the threads as
needed. Reapply the moly lube and try installing it again.
The Plug should sit nearly flush with the deck surface.
Using a torque wrench tighten the plugs until the indicator
line is collinear (lines up) to the line on the block deck
surface. This should require approximately 8-10 lb
⋅
ft of
torque (no greater than 11) and the plug should be even
with the decked surface.
Acceptable Lubricants:
-
ARP Moly Lube
-
Loctite LB8012 Moly Paste
