megane vs williams b/e

[schakal]

been looking through old posts etc .
sounds like the megane b/e is more advanced
over williams b/e ?? is this true ??

if so ,what is the difference ?

[MAXIBOY]

nothing to right home about. think the crank has moved on a little.

[schakal]

nothing to right home about. think the crank has moved on a little.

better torque in lower revs ? :roll:

[MAXIBOY]

yes mate due to a smaller port head with bigger valves and a different manifold. nothing to do with the bottom end :roll:

[schakal]

yes mate due to a smaller port head with bigger valves and a different manifold. nothing to do with the bottom end :roll:


nice one cheers mate
:P

[summeh]

I think the only diff with the bottom end is the oil pump is driven by a chain internally rather than by the cam belt.

[schakal]

I think the only diff with the bottom end is the oil pump is driven by a chain internally rather than by the cam belt.

no its not :?

[MAXIBOY]

think some late models were driven like that and the oil pump drive became just a pulleys

[stan]

714 was chain driven like the F4R's.

[matty w]

714 was chain driven like the F4R's.

yep they use the same crank

[schakal]

[quote="stan"]714 was chain driven like the F4R's.[/quote

its the later type meggy f7r engine though yes ??

[stan]

yes, 710 is earlier one.

[schakal]

yes, 710 is earlier one.

zanng !! 8)
pm on f7 mofo :wink:

[schakal]

whats the torque figure on the f7r engines btw ?? :roll:

[number1]

more than the f7p by a long way! lol, think my bottom end is a 710, shaft driven oil pump, Valver pump, valver sump and dipstick, all swapped over perfect

[summeh]

I think the only diff with the bottom end is the oil pump is driven by a chain internally rather than by the cam belt.

no its not :?

yes it is :p 714 is what I thought you was asking about.

[schakal]

I think the only diff with the bottom end is the oil pump is driven by a chain internally rather than by the cam belt.

no its not :?

yes it is :p 714 is what I thought you was asking about.

well i was not :wink:

:P 8)

[Matty86]

how much different is the megane 710 to the williams one (not sure what number?)

[MAXIBOY]

how much different is the megane 710 to the williams one (not sure what number?)

williams is 700. not a lot of difference in the bottom ends

[number1]

think it has revised waterways and crank i believe, The redline on the meggy f7r is 7k tho.. 8)

[Matty86]

both 714 and 710??


what bits are swappable between the 700 and 710/714?

crank/pistons?

oil pump (700 & 710)

[schakal]

think it has revised waterways and crank i believe, The redline on the meggy f7r is 7k tho.. 8)

i believe the redline on standard williams engine is
somewhere around 6700 ?? right ??

[2 live]

both 714 and 710??


what bits are swappable between the 700 and 710/714?

crank/pistons?

oil pump (700 & 710)

all the same..its the 714 thats diff, it has the oil pump driven by chain off the crank rather than off the pulley off the timing belt.


as for which is best..not much in em tbh.

std f7r 700 a ....well with zorst mods ;) 1/4 14.6

completely rebuilt f7r 710 .with zorst mods and cams ( no map) 14.4 with remap 14.0


btw the willy lump had about 75+k on the clock, the meg lump was on 25k before the rebuild. its loosened up nicely now lol, having done around 30k+ since, in several spec of top end.

[stan]

same crank/pistons...rods the same on 710 and 700.....714 same as F4R, tho critical dimensions on all are the same. The later ones are skinnier.