The V8 Owners Forum -

Found on the web that someone has been dynotuned his 5.2L rover v8 witch has got custom inlet manifold, H404cam and David Vizard/V8 developments custom heads, Motec etc.. Results are only 373hp/395ft/lbs So what is wrong with that engine? :lol: Head´s? http://s80.photobucket.com/user/andyelsey/media...

Yes. But our stupid law won´t let us to use chevy engine´s in our car´s.. So we have to use Rover engine´s and try to tune them.. :x This is the only reason why we build those.. Too mutch cubic inches or too mutch power for chevy engine´s.. We can build approx 25% bigger engine in our cars.. But che...

"Hemi" Headed custom Rover V8.. Made in Finland..

Some special mod´s for my old home made stage 4 head´s..
Still running 43mm inlet valve.. In the pickture 38mm exhaust valve is deep in the inlet port..

My ex 4.6Efi made 280hp with stock 65mm plenum and 38mm trumpets.. Head has got 41.5mm inlet valve and 35.5mm throat.. Also it will run STD 3.9 ecu chip. Then i replace bigger trumpets, 45mm and it will run very lean, so have to fit programmable ecu.. In my mind you will need slightly bigger trumpet...

Eales has been measured his 5.3litre engine with TA head´s and it will give 460hp.. Ad he is still working for those head´s.. porting etc.. I understand he is running M256 camshaft, and dry sump etc.. He will advertise that those are worth approx 10% over STD fully worked rover head´s..

V8 developments best 5.4l engine made +430-436hp using STD ported rover head´s..
Eales best engine made 423-426hp and it is 5.3litre..

No more than 426hp..

Yes i mean throat.. My mistage..

But will this angle command throat size? And i do not see why durability is worse?

Hi. Like to ask why there is a rule that valve throat size is usually 85-87% of valve diameter? Is that a reason, because all engine builder always do this? I make an converstation of our head porter, and he say that you wont get all valve area to use if use throat like 85%. He usually go for bigger...

Friend of mine who owns Land Rover garage use only Irontite. http://www.ebay.co.uk/itm/P38-Range-Rover-4-6-Engine-Sealer-Cracked-Block-Head-/270805217695 First you have to buy radiator flus, (Friend of mine recons irontite stuff it is more agressive than universall market stuff?) Then heat the motor...

Best one is the new one. But you have to measure height.. Because SD1 sump height is different than Range Rover. Best sump/pick up clearance is approx 8-10mm

44mm inlet valve, and fully ported..

44/38mm valves, clearance approx 1mm


Now ready for flow bench testing again, if they outflow my home modded stage 4 heads, i start work..

I think they are quoted with zero lift.. Because if you calculate cam degrees, it is 264deg form up to 99MY. If it is from .050" lift i think cam is quoted approx ~228deg then, maybe less??

Why not weld it?