LWR and LW2 Cylinder Heads Interchangeable ?

[NB66]

Hi.. I have a 2013 VE Commodore Factory GAS only engine LWR code. It has burnt valves. The mechanic says you can buy new bare LW2 heads on ebay for about $200 each and he can transfer across all the cams,valves etc to the new heads. As far as I know the LW2 is for 2006 - 2012 dual fuel engines. Note: I can't find new bare LWR heads.

Question is can you use the earlier dual fuel LW2 heads ?

 

[LeighC]

Hi.. I have a 2013 VE Commodore Factory GAS only engine LWR code. It has burnt valves. The mechanic says you can buy new bare LW2 heads on ebay for about $200 each and he can transfer across all the cams,valves etc to the new heads. As far as I know the LW2 is for 2006 - 2012 dual fuel engines. Note: I can't find new bare LWR heads.

Question is can you use the earlier dual fuel LW2 heads ?

My LW2 did not have very good inserts on the exhausts for LPG, seats got very wide & the valves lost their clearance & rode & cut slots in two of them.
I got diamond inserts & late model nitrided valves fitted to original heads, going OK so far.
Beware lifters can bottom out & make valves ride & burn out. Valve length & set height is critical.
Hope this helps. Cheers - Leigh

 

[NB66]

Yes. I'm wondering why he just doesn't replace the burnt valves and lap the valve seats on the existing heads. You'd think that would be easier?

 

[LeighC]

The original seats are crap to start with will be soft after being cut & will leave the new valves to low.
Get the best known LPG inserts fitted at an auto engineering shop.
I reckon my original valves were too long allowing the lifters to bottom out.
Get them to loosely fit the cams & check lifter position.
Cheers - Leigh