Hi All,

I'm going to strip the V8 engine down on my hybrid Land rover so she really
healthy for when she finally gets built.
Anyway is there any mods/improvements i can do the the engine in its
stripped down state to make it more suited to LPG conversion it will have.

the engine is a V8 3.5 efi

cheers Jinx

"Jinx" wrote in message
...
Hi All,

I'm going to strip the V8 engine down on my hybrid Land rover so she
really
healthy for when she finally gets built.
Anyway is there any mods/improvements i can do the the engine in its
stripped down state to make it more suited to LPG conversion it will have.

the engine is a V8 3.5 efi

cheers Jinx


Stick the cam from a 3.9 EFi in there - it'll give you a little bit more
power (you could fit a much sexier specialist cam but the 3.9 one is a
fairly cheap substitute - especially if you are replacing the original
anyway) - just be advised that the bolt in the end of the 3.9 cam is not the
same as that in the 3.5 so you'll have to buy one of those too.

Otherwise my only other suggestion would be to check/refit the valves,
tappets, rods, lifters etc etc - they'll improve the engine in any case
whether you were going to LPG it or not.

Have a good think about where you are going to site the mixer and feed into
the air intake - on mine the guy squeezed the whole lot in using the
original siting points and it makes fitting a new air filter a triumph of
ingenuity - so a little thought beforehand will go a long way.

Graeme

Stick the cam from a 3.9 EFi in there - it'll give you a little bit more
power (you could fit a much sexier specialist cam but the 3.9 one is a
fairly cheap substitute - especially if you are replacing the original
anyway) - just be advised that the bolt in the end of the 3.9 cam is not
the
same as that in the 3.5 so you'll have to buy one of those too.

Some later 3.5 cams are the same bolt. Valve timing is only 2 degrees
advanced over std with a 3.9 cam, lift is the same, so don't expect massive
gains. Most people say they are the bee's knees, but they are comparing it
to the probably knackered cam they removed. Real difference is about 3bhp
withthe torque peak coming in about 200rpm lower.


Otherwise my only other suggestion would be to check/refit the valves,
tappets, rods, lifters etc etc - they'll improve the engine in any case
whether you were going to LPG it or not.

Try and get vitesse waisted stem valves, gas flow the heads (mildly, simply
remove any casting imperfections / sharp steps) and fit pre-SD1 10.5:1
pistons. Skim about 10thou off the heads and build using composite head
gaskets instead of the std tin crap. Remember to only torque the outer row
of 4 bolts on each head to 40 lb/ft, with a dab of loctite threadlock on
those bolts only!


Have a good think about where you are going to site the mixer and feed
into
the air intake - on mine the guy squeezed the whole lot in using the
original siting points and it makes fitting a new air filter a triumph of
ingenuity - so a little thought beforehand will go a long way.

Graeme


Badger.