I believe the heads for the x series falcons varied over the range.
I been told that the 87 efi head was the best.. why i dont know, but anywho
What i need to know is when i search the wreckers, how do i tell the difference? The shapes of the chambers and positions of the inlet and exhausts differ, i think?
Any help appreciated, history lesson required maybe.. LOL
late XF ute upto i think early '93 had crossflow '93 dont know month 4.0 came out in XG, there was a '93 ford panel van for 3 grand i looked at a while ago thaat when i looked under the bonnet it still gad a crossflow and 3 speed auto, hence i lost interest real quick.
i'm considering doing a 4.0 conversion to my good XF running straight gas but buying a beat up XG as a donor so i can use power steer,air and radiator stuff that should be a bolt in job
i was told by an engine rconditioner that each crossflow head has different cc in chamber along with dish in pistons varying also between models
I have been told that the EF Heads are the best they have a better commpresion chamber better valve size and straighter intake runner. They are easier to port too. I have some written info on this i will try hunt it down on the great wide world web :fraz:
I have been told that the EF Heads are the best they have a better commpresion chamber better valve size and straighter intake runner. They are easier to port too. I have some written info on this i will try hunt it down on the great wide world web :fraz:
So i should probably steer clear of mixing and matching then..
So anyone got an idea of the best of the X-series donks that i should rebuild
I spose the later models, they will be all efi'd, conversion to carb shouldnt be that hard still.
So any recommended dates of XF that would be best to hot up?
i remember seeing an article somewhere were they fitted a 3.9L head to a 250 x-flow, i think it bolted on but needed a few mods here and there to block etc, although it would be a bit of a headf*ck
i think the efi 6's had pretty low comp im sure. ill try to find out some info
After doin some research.. It is stated that i need at least 60cc in each chamber.. recommend 77cc to get 10:1 comp. Therefore the head i need would be the one that is closest to that, for less metal removal.
I don't know what the standard chamber sizes are, will investigate further
After doin some research.. It is stated that i need at least 60cc in each chamber.. recommend 77cc to get 10:1 comp. Therefore the head i need would be the one that is closest to that, for less metal removal.
I don't know what the standard chamber sizes are, will investigate further
is that with a flat top piston? i had a heap if shti XE as my first car which had bad big end noise, i had an ok 250 motor from an XC(iron head) and put my alloy head on top, i'm guessing the later model the motor the bigger the piston dish and smaller the chamber in head. this motor flew but was an oil burner i changed to 351 in this car and gave 250 away.
2 years ago i gave a neighbor 3 XE heads as i now like XF motors cos they dont use a rope rear main seal, his eyes lit up as he said these are the best providing you get the right piston,
do some more research though cos the motor he built didn't impress me much. i've had a few really good ones but i don't know what was done other than big cam(which was a pain with 2.92 and std stall in auto)
This is a dished piston with only 1.85mm deep dish..
If what you are saying with the chamber size is correct, i should go for an older version, as i want a large chamber head.
I think i need to physically check em out meself.
I will let everyone know what i find
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