TVR AJP8 User manual

Main Engine Assembly

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Modification
Block Modifications -Early Engines Only
Firstly the lower bellhousing mounting
t ad d h] , on ach side of the blo
need modifiying. (LeftPosition
shown)
(Right Position shown)
Modification 1is to drill through the
tapped hole at the front of the casting to
diameter S.5mm...
... and then tap through, MJ 0 x 1.5 x 2.5 mm
deep.

Modification
Modification
ModifiCJltion
~ .... pa
tito drill out the pump mounting
hol to 8.5mm...
... and th s then need th edges
deburring on both the front sid
... and then on the rear side.
Main Assembly
Engine - Main Assembly
Number the main bearing cup with an
engraver at the edges.

Mnin Assembly
Main Assf'lnbly
Main Assembly
Ml1iIJ Assembly
Start with the one neare tthe timing end
as shown.
Once this
has b n done the caps need to
be removed, starting from the front of the
block...
.. and work ba wards.
To remove the final cap, gently tap it with
aoft faced hammer on the ideo

~...JP El
MJIin Assembly
Main Assembly
Mod~ficali(ln
xt the oil feed holes for th main
barings ne dto be deburred ...
... and any sharp edges on the baring
bOT sneed to be removed.
Modification
The edges on the thrustbearingbore
need to be chamfered l.5mm x 45 u
In order for the fly wheel timing disc to
miss the oil gallery, the casting needs
relieving ahown.

Modification
In order for the fly wh el timing disc 0
turn, the oil gallery f ed n eds relieving.
Modification
Maill Assc1IIblt,
Rlieve th sump mounting flange 0 that
th wte transf r pipe clears the flang ...
... as hown.
Main Assembly
N xt remove th main oil gallery plug
and ...

L'....JP El
Main Assembly
Main Assembly
Main A~sembly
Main ASSl'm/lll1
... bru h out with arifle bru h, to remove
any burrs, etc.
Making ure
to brush the main oil gallery
feed.
In
order to remove any oil or greasy
residue place the modified block and
bearing caps in the parts washer.
Then
dry the block, making sure to blow
down the oil galleries with an air line.

El
Main Assembly
Main Assembly
Main Assembly
Ma/ll Asscl11/J1y
Make sure they r fr from any wate
or dbri .
ext apply PI'FE tape to the main oil
gallery
bung ...
... fit and torque to 20 ft lb .
Now mount engine on stand and insert
the four cylinder head dowels to the
block.

Main Asembly
~...JP El
Dgre ethe head studs with spirit wipe,
dryand apply loctite.
TIghten onto
the block to atorque of
25ft Ibs
in the order shown in the
diagram below. (
Le. - in length.)
Maifl Assembly
WORK ..
90mm
f-h
5~mm
1
1
, I
135mm
168mm
1"•••J
I
I
-I
I
50mm
I
125mm
Repeat for the outer head studs to a
torque of 15 Et lbs.

El
Marn Assembly
Main Assembly
Main Asst'IIl/Jl.'l
Malll Assm,bl.'l
Once fitted, the h ad tuds should be
level as
hown in th picture.
Next fj tthe halftiro bearing as well as
th idl rpinion.
Using aoft driftinsert
the jackshaft front
bearing.
Break the
sharp edges on the bottom of
the liners and wash.