Bf Mk2 06/06 Or Fg Motor

[Brendan XR6-T]

After getting the wastegate bored and bigger act. + flapper the tuner advised me whilst tuning that the

car was struggling to make the same power as the last time he tuned it he thinks its a piston leaking.

The quote for new forged pistons,rods head gasket, and billet oil pump, retune came to $8000 which I cannot afford.Ok so simply put im trying to find which bottom end is better and why. I was told that

the pistons in the fg xr6t werent as tough as the bf mk2 (after 06/06 of course) but I dont believe

everything I hear (not to be negative).The reason I ask is Im trying to weigh up whether to get a new

fg xr6 t short block from fraud or get a complete bf mk 2 preferably with low low km's from a wreckers

or even a fg xr6 turbo motor which would give me the advantage of having the "plenum" so to speak and

sell my existing motor as complete or parts wateva. All in all im assuming it would

pretty much cost the same either way to do any of the 3 conversions

Edited 01/07/10 11:00 AM by Brendan XR6-T

[riki83]

PM Kice, if he still has his long engine mate be cheaper option. Keep your turbo and stick it on the new one. DJ Kice had 400+ out of his, serviced regularly and 20,000 on the clock. Last I saw was in a hurry to get rid of it and was round the 3500 mark!!! dont quote me on the price though. Could organise for you maybe cheap coruier rates

[PHANTMXR6]

An FG short will be a mismatch to a BF head.

Lower compression pistons in the FG will create an even lower compression ratio with the BF head fitted.

Either go whole hog or nothing.

But as riki said, Kice's long motor would be a good buy.

[Brendan XR6-T]

Thanks I didnt know about the mismatch problem. I dont think ive got too long before the motor in it is going to sh1t itself the motorwas making a fairly rattley noise this morning.

Does the lower compression pistons work as a disadvantage as is are they weaker when wanting to push around 350-400rwkw will the motor have to work harder to say get the same result as a BF mk 2 or is it basically same sh1t different smell so to speak. In the way of buying a motor I think I would rather buy something with low km's and hasnt already been tinkered with just as a safety precaution. I like the idea of the shorter intercooler pipes if I was to go with the fg full motor although if the pistons arent as good as the bf mk 2 motor then I wount bother I would rather a stronger motor.

[djkice]

overall fgs breathe better, faster burning cylinder heads etc etc.

400rwkw wasnt acheived on 20+psi as normally needed in ba/bfs... only 15psi.

you need to buy turbo manifold as well to route your turbo the way the fg turbo sits. I have that listed for 350 inc heatsheild, bolts, water/oil lines.

kice

[HIRO F6]

From what iev been hearing, the pistons in the FG are not as strong as the BF.

I too was a disbeliever but have spoken to Brad at Atomic who has confirmed this is correct.

[Brendan XR6-T]

Thanx for your input HIROF6 that rules out one of my options. Just wondering on ppls thoughts on is it betta to recondition the

motor I have now (new pistons, rods, head gasket and headwork) or buy a second hand BF mk 2 motor with minimal km's. Honestly after driving around with 320rwkw I know this sounds abit soft but Id only really be aiming for around 350rwkw. Im trying to do this (as everyone sez) relatively cheap as im not in a position to spend a gr8 deal (just bought another house).. Thanks for your opinions and help guys this is the first time ive ever had to worry about a motor failure like this so a little guidance will go along way.

Edited 02/07/10 09:03 AM by Brendan XR6-T

[Brendan XR6-T]

With getting the engine rebuild I would be planing on taking the engine out myself and refitting myself which will hopefully save some coin

[mattyb]

I did the FG F6 short motor with my bf head, and have had zero problems. I'm having a re-tune done in the next month or 2 to make the adjustments for the stage 3 cooler and pw 4" air box. I get better fuel economy and the motor hasn't missed a beat running 360rwkw. each to their own.

The pistons are a forged unit according to ford, and the rods are different part number to BF 2 and FG XR and I'm told by ford that this is due to a different bush in the rod... NOT a stronger rod. I even went as far as contacting ARGO (it was rumoured that they ran an ARGO rod) and they told me that they supply their rods for the xr8, not the FG F6.

Hope this helps.

Edited 02/07/10 10:44 AM by mattyb

[P_BA_XR6]

I am interested in the fg and bf talk aswell with engine drop I have na ba xr6 transfering to either bf series 2 or fg xr6 turbo engine.