Essex 3.0L Unleaded Conversion

[graham m]

Anyone recommend someone local to North Essex to carry out an unleaded conversion to an Essex 3.0L.

[FlipFlopGriff]

Could try these:
http://www.burtonpower.com/contact_details.aspx

http://www.specialisedengines.co.uk/index.html
I'm sure I had some bumph years ago with a write up from Steve Ovett on the rebuild of his Scimitar SEx from Specialist Engines.

Seems like you could be spoilt for choice.
Adrian Venn would be wortrh talking to also.
FFG

[heightswitch]

I do know that this place turns out a nice engine:
you will need to pay for a carrier though:

http://www.essexengines.com/

Neil.

[Gnasher]

For any Essex V6 work John Wade's your man.

Adrian Venn drove the 'Hi efficiency leadfree' JW Developments engine I had in my 3000S, & described it as the best non turbo V6 he'd driven for a very long time.

And if you've got a turbo, John works on turbo engines as well.

[thermister]

[pic]http://s281.photobucket.com/albums/kk221/thermister/?action=view&current=DSC00542.jpg[pic]

this is my john wade engine, lead free head converted to hydrolic followers

[jellison]

graham m said:

Anyone recommend someone local to North Essex to carry out an unleaded conversion to an Essex 3.0L.

Don't bother unless doing big miles in it. It has Iron heads why does it need making unleaded, not like and alloy head that obviously needs steel inserts.

More to go wrong with inserts (they can fall out and wreck things! If doing 2 - 4k mile per year I have been told by my head guy that you are beeter staying leaded and then lapping in valev seats evey 3 - 4 years to get rid of any minor piting.

I am not having my 289 race heads made unleaded, no way.

[Adrian@]

jellison said:

Don't bother unless doing big miles in it. It has Iron heads why does it need making unleaded, not like and alloy head that obviously needs steel inserts.

More to go wrong with inserts (they can fall out and wreck things! If doing 2 - 4k mile per year I have been told by my head guy that you are beater staying leaded and then lapping in vale seats every 3 - 4 years to get rid of any minor pitting.

I am not having my 289 race heads made unleaded, no way.

I'm sorry Jon but I have to disagree with your head guy in relation to Essex Turbo heads....IF this was a normally aspirated car then I might agree. The use of leaded mixtures will protect the engine (THIS APPLIES WHERE the aged internals will be case hardened, lead will have left the halides and oxides that protect the engine, drivers add the additives to continue this process) TVR Turbo engines do not get this chance, the cylinder heat and compression quickly break these H & A down and leave the valve seat poorly protected allowing the pitting to become a welding process and pull a valve head off it's stem! This is just as bad as having a seat go through the engine.
Adrian@

[jellison]

Adrian@ said:

jellison said:

Don't bother unless doing big miles in it. It has Iron heads why does it need making unleaded, not like and alloy head that obviously needs steel inserts.

More to go wrong with inserts (they can fall out and wreck things! If doing 2 - 4k mile per year I have been told by my head guy that you are beater staying leaded and then lapping in vale seats every 3 - 4 years to get rid of any minor pitting.

I am not having my 289 race heads made unleaded, no way.

I'm sorry Jon but I have to disagree with your head guy in relation to Essex Turbo heads....IF this was a normally aspirated car then I might agree. The use of leaded mixtures will protect the engine (THIS APPLIES WHERE the aged internals will be case hardened, lead will have left the halides and oxides that protect the engine, drivers add the additives to continue this process) TVR Turbo engines do not get this chance, the cylinder heat and compression quickly break these H & A down and leave the valve seat poorly protected allowing the pitting to become a welding process and pull a valve head off it's stem! This is just as bad as having a seat go through the engine.
Adrian@

Cool appreciate it could be different if a Turbo and not an NA Essex.