power_slide Hitting the apex Donating Members 596 Member For: 16y 7m 22d Gender: Male Location: Miranda Posted 25/01/10 09:29 AM Share Posted 25/01/10 09:29 AM Hey GuysI have the car in pcs at the moment and looks like I mat be leaning twords a atomic 698kw motormy new concern is how long my zf box will last if im getting up aroung 500rwkw and taking it to the trackwhat would I need to do to keep the box healthy and is there any mod I need to look at to strengthen the box? im guessing if it breaks its going to cost alot more after it breaksCheersMatt Link to comment https://www.fordxr6turbo.com/forum/topic/65460-500rwkw-in-the-zf-box/ Share on other sites More sharing options...
Phoontastic Donating Members 262 Member For: 19y 4m 6d Gender: Male Location: Canberra Posted 25/01/10 09:41 AM Share Posted 25/01/10 09:41 AM Mate,Have a chat to Kewish and Dominellos and seek their advice. Both mobs beef up the ZF boxes and do a good job, including modified valve body to increase the line pressures, and modified converters. I got mine done a few months ago and it shifts much better under load.....until the turbo ate itself!! Modified converter has certainly made it friskier. I'm not sure of the power rating now however I was advised that the standard ZF is good for around 350rwkw. I had heard that the modified one is good for 450 - 500rwkw but not sure if this is accurate. Link to comment https://www.fordxr6turbo.com/forum/topic/65460-500rwkw-in-the-zf-box/#findComment-974621 Share on other sites More sharing options...
shananp Member 248 Member For: 15y 9m 30d Gender: Male Location: Werribee Posted 26/01/10 08:21 AM Share Posted 26/01/10 08:21 AM (edited) how much did it cost you? and what stall can you get it up to now ? Edited 26/01/10 09:33 AM by bcl remove quote Link to comment https://www.fordxr6turbo.com/forum/topic/65460-500rwkw-in-the-zf-box/#findComment-974885 Share on other sites More sharing options...
bcl Toughest BA Turbo Lifetime Members 3,408 Member For: 22y 5m 16d Gender: Male Location: Sydney Posted 26/01/10 10:19 AM Share Posted 26/01/10 10:19 AM How long will it last: probably not long --- input shafts are prone to snapping, and if you do some thread mining you'll come across some other problems.Not sure how many guys are running around 500rwkw with modified boxes. I'm considering it as one of my projects for sometime this year.Brian Link to comment https://www.fordxr6turbo.com/forum/topic/65460-500rwkw-in-the-zf-box/#findComment-974942 Share on other sites More sharing options...
SMG_473 Member 30 Member For: 17y 8d Gender: Male Location: VIC Posted 04/02/10 03:12 PM Share Posted 04/02/10 03:12 PM Hi power_slidefrom what I have heard, the box can only handle up to 600 nm of torque, so a 500 rwkw XR6T should produce alot more than that and it can brake the box easily, so I think you should be concern with the torque aswell. I think a rebuilt will improve the box to handle more torque.correct me if im wrong. Link to comment https://www.fordxr6turbo.com/forum/topic/65460-500rwkw-in-the-zf-box/#findComment-978192 Share on other sites More sharing options...
blow off Donating Members 199 Member For: 16y 10m 5d Gender: Male Location: Airlie Beach - FNQ Posted 04/02/10 03:31 PM Share Posted 04/02/10 03:31 PM (edited) qik1 has a built Zf and is going to put at least that power in front of it but as Brian says reliability might/will be a problem. From my experiences with Autos in these beasts and if you have around 500 wasps the Torque will be 1600+ Nms which is the killer of everything behind the motor and only a few boxes will handle it reliably being a Powerglid/Turbo 400 and the Ford C series, mainly the C9. Am doing a Dominello Turbo 400 conversation on mine at the moment. Edited 04/02/10 03:32 PM by blow off Link to comment https://www.fordxr6turbo.com/forum/topic/65460-500rwkw-in-the-zf-box/#findComment-978194 Share on other sites More sharing options...
Wingnut Member 573 Member For: 16y 10m 5d Gender: Male Posted 04/02/10 08:45 PM Share Posted 04/02/10 08:45 PM I dont think there is a set number where your ZF suddenly decides to go ahhhh I need to explode now!!Look at Brians sig, 11.01 on a stock ZF which I assume is well in excess of 350rwkw. It could blow at 300 but could be good to 400. Just be prepared to rebuild it no matter what kind of power you have. Link to comment https://www.fordxr6turbo.com/forum/topic/65460-500rwkw-in-the-zf-box/#findComment-978204 Share on other sites More sharing options...
power_slide Hitting the apex Donating Members 596 Member For: 16y 7m 22d Gender: Male Location: Miranda Posted 04/02/10 09:03 PM Author Share Posted 04/02/10 09:03 PM I think I will be keeping the power in the 400's now as I dont have the cash for a bigger turbo and have been told the turbo I have is better for Circuit racing, maybe put T04Z internals in later when I have a spare 2500.If I was going to do anything to the zf box to handle the power what would it be? new box is not going to happen Link to comment https://www.fordxr6turbo.com/forum/topic/65460-500rwkw-in-the-zf-box/#findComment-978207 Share on other sites More sharing options...
bcl Toughest BA Turbo Lifetime Members 3,408 Member For: 22y 5m 16d Gender: Male Location: Sydney Posted 04/02/10 09:55 PM Share Posted 04/02/10 09:55 PM Look at Brians sig, 11.01 on a stock ZF which I assume is well in excess of 350rwkw. It could blow at 300 but could be good to 400. Just be prepared to rebuild it no matter what kind of power you have.Its not just the time. My time depends on traction. Ive done multiple 132mph passes on the stock ZF box, and very few guys have exceeded 130mph passes, and probably around 50 passes all up. I always find mph is a good indication of power level, especially in the ZF as you are still in 4th gear going over the line. 4th gear has around 144mph capability at around 6000rpm.I had expected my ZF to break, because other guys had reported failures at lower power levels.If shift pressures are adjusted too hard through the tune it could contribute to box failure, especially input shaft that cops the brunt of the shift.As a precaution 2 years ago I bought a spare set of modified ZF parts, Kevlar clutch discs, plates, pistons and input shaft from F6 Tornado (Greg), but never had to use them.So based on my experience, if you are going to race with the standard box and have in excess of say 380rwkw I would suggest you get the box serviced with new oil, pan replaced, and tell your tuner you dont want settings that are too hard. I just got my car back 2 days ago after rebuilt motor and slightly bigger turbo in stock position, and now with rebuilt ZF (including converter), etc, organized through Tunehouse. After the current run-in tune well push towards 500rwkw and see what mph I can do; hopefully around 135mph. As luck would have it, getting car back usually brings on the rain! After driving my STi for the last 3 months Id forgotten just how careful you have to be with these Fords. Even on mild run-in tune and bugger all boost it is very quick and torque convertor works very well.Brian Link to comment https://www.fordxr6turbo.com/forum/topic/65460-500rwkw-in-the-zf-box/#findComment-978216 Share on other sites More sharing options...
power_slide Hitting the apex Donating Members 596 Member For: 16y 7m 22d Gender: Male Location: Miranda Posted 04/02/10 10:11 PM Author Share Posted 04/02/10 10:11 PM what pan do you put in?I was going to get jim to do the next tune, I didnt realise they adjust the gearbox change speed also Link to comment https://www.fordxr6turbo.com/forum/topic/65460-500rwkw-in-the-zf-box/#findComment-978217 Share on other sites More sharing options...
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