A
Anonymous
Guest
G'day people,
well, the old girl hit 330,000km a fortnight ago. She's been losing a bit of water over the past 10,000km, but now its coming out the side of the block quite keen. Seems to be coming out from a core plug or seeping from the head gasket. I tried a radiator flush and some additive to stop it from leaking, but it seems to have slowed it to losing 5 litres every 100km. lol.
It got me to thinking though, since I'm all moneybags now, I'm thinking about flopping out a couple of grand on a rebuild. Basically my constraints are that it must retain a standardish stall speed (1700rpm), standardish rear gears (2.77:1).. at least for a little while. I've been doing a fair bit of highway travelling to and from work (110km/h+), with lots of overtaking too.
I've got a generic idea of what I want in my head, something like this..
I'm starting out with an 87DA block in an '89 XF van.
No more overbore than neccesary - if its been bored out, then bore and sleeve to +.020
Install an EF-EL crank, 12 counterweight style. Minimum grind. Modify front cover if neccesary.
Locate, resize (if needed) and install 200 cid rods onto ACL race pistons. 8.7cc dish.
Balance Reciprocating Assembly. !
Use GRA Voodoo Stage 2 cam (http://www.gasresearch.com.au/productvoodootable.html or similar. Crow cam #14771 seems to be a bit on the mild side.
Degree cam to 4 degrees advance.
Install double row timing chain.
Use brand new lifters
Use standard head, standard rockergear, uprated valvesprings to suit cam.
Have block decked to zero, with measured height of piston at TDC.
Have head faced to achieve 10:1 compression.
Bearings, gaskets, seals, all the other guff needed to keep it keen..
Retain Weber 34/34 and LP Gas hood in lieu of EFI intake and GRA Throttlebody (later on)
I'm thinking that'll give me a smooth as silk six, that'll see a bit of 5000rpm, with peak power on the sunny side of 4000rpm, peak torque in the 2600-3200rpm range, with most of that available from when it gets on the cam. I'm thinking that peak power will be in the 130-140kW ballpark, with my torque being in the 330-350Nm range.
Any suggestions or comments? like something blindingly obvious I should have remembered?
well, the old girl hit 330,000km a fortnight ago. She's been losing a bit of water over the past 10,000km, but now its coming out the side of the block quite keen. Seems to be coming out from a core plug or seeping from the head gasket. I tried a radiator flush and some additive to stop it from leaking, but it seems to have slowed it to losing 5 litres every 100km. lol.
It got me to thinking though, since I'm all moneybags now, I'm thinking about flopping out a couple of grand on a rebuild. Basically my constraints are that it must retain a standardish stall speed (1700rpm), standardish rear gears (2.77:1).. at least for a little while. I've been doing a fair bit of highway travelling to and from work (110km/h+), with lots of overtaking too.
I've got a generic idea of what I want in my head, something like this..
I'm starting out with an 87DA block in an '89 XF van.
No more overbore than neccesary - if its been bored out, then bore and sleeve to +.020
Install an EF-EL crank, 12 counterweight style. Minimum grind. Modify front cover if neccesary.
Locate, resize (if needed) and install 200 cid rods onto ACL race pistons. 8.7cc dish.
Balance Reciprocating Assembly. !
Use GRA Voodoo Stage 2 cam (http://www.gasresearch.com.au/productvoodootable.html or similar. Crow cam #14771 seems to be a bit on the mild side.
Degree cam to 4 degrees advance.
Install double row timing chain.
Use brand new lifters
Use standard head, standard rockergear, uprated valvesprings to suit cam.
Have block decked to zero, with measured height of piston at TDC.
Have head faced to achieve 10:1 compression.
Bearings, gaskets, seals, all the other guff needed to keep it keen..
Retain Weber 34/34 and LP Gas hood in lieu of EFI intake and GRA Throttlebody (later on)
I'm thinking that'll give me a smooth as silk six, that'll see a bit of 5000rpm, with peak power on the sunny side of 4000rpm, peak torque in the 2600-3200rpm range, with most of that available from when it gets on the cam. I'm thinking that peak power will be in the 130-140kW ballpark, with my torque being in the 330-350Nm range.
Any suggestions or comments? like something blindingly obvious I should have remembered?