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| zzz-ba ute |
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No probs. I'm always anal with my research before doing any thing to my car
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| Shifteh |
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im guessing the clutch packs start slipping and burn them selvs out
_________________ Crank Assembly balanced, HV oil pump, ACL Trimetal bearings, "1 extra oil clearance taking to around 0.0650-0.0700 on mains and big ends, Moly rings,, Xr6 Cam, POD ( Possibly oversize injectors), Block, Head, Timing cover, belt idler, Alternator,painted in ford light blue |
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| fairlane6970 |
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Nice info indeed, shame they can't put a decent 1st gear in them!
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| zzz-ba ute |
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fairlane6970 wrote: Nice info indeed, shame they can't put a decent 1st gear in them! I agree, I used to think it was a power problem but once i put the xr6t engine in I realized it was gearing. however a 3.75 or 4.11 diff ratio should help that
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| locknut |
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Spot on, anyone on here got a BA BTR with 3.7's?
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| efxr6wagon |
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I have the factory 3.45 LSD in my EF, and it's OK, but not quite enough to overcome the tall first gear of the BTR. Rather than go for a higher diff ratio, I had my stock torque convertor hi-stalled to 2900rpm (under $300 excl removal & installation) - and it really wakes the beast up. Snaps straight into the power band (cam is one step hotter than the XR6). Plus, lock-up still works as normal, so fuel economy on the highway is unaffected.
_________________ 95 EF XR6 wagon, 17" FTRs, DBA rotors, KYB/Koni, AU bottom end, ported EF head, backcut valves, SS Inductions, Territory intake, 10.2 CR, Auckland 1258 cam, vernier gear, PH4480 headers, no cat, Tickford 2.5", 2800rpm stall, J3 chip |
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| the sam |
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What causes them to break is box flex. When you get box flex due to high amounts of torque it increases the clearances between gears and ends up causing chipping and fracturing of the gears, then KABOOM.
_________________ LOW, LOUD AND LUMPY |
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| knowsfords |
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Shifteh wrote: im guessing the clutch packs start slipping and burn them selvs out Basically yes, the chief problem with these boxes is that it dies when it gets too hot... I recommend any BTR should have a big external cooler. |
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| locknut |
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the sam wrote: What causes them to break is box flex. When you get box flex due to high amounts of torque it increases the clearances between gears and ends up causing chipping and fracturing of the gears, then KABOOM. So that heat sink pan I mentioned could be a goer.. it's supposed to stiffen the box. |
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| the sam |
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locknut wrote: the sam wrote: What causes them to break is box flex. When you get box flex due to high amounts of torque it increases the clearances between gears and ends up causing chipping and fracturing of the gears, then KABOOM. So that heat sink pan I mentioned could be a goer.. it's supposed to stiffen the box. Yeah that should help keep together better. Some reinforcement might also be a goer if you can work it in. Its the same as the t5 boxes. Weak aluminium.
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| zzz-ba ute |
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Mate in regards to the btr box flexing and causing issues i haven't heard this before.
I have heard that the t5's flex and this causes third to hit the housing and cause hell. I have been told the biggest problem with the btr's is cooling and oil flow. also another big issue with the 4 speed is the radiator splitting internally and mixing coolant with your atf.
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| locknut |
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Yep got a Transco cooler fitted as soon as I bought the car.
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| jaysway |
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the sam wrote: What causes them to break is box flex. When you get box flex due to high amounts of torque it increases the clearances between gears and ends up causing chipping and fracturing of the gears, then KABOOM. you got any more info on this? iv never heard btr gears chipping and fracturing.. im pretty sure your confused with the t5 here.. |
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| Vic |
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I'm running the BTR97LE in my EL and it's currently pushing 220+rwkw. The box is stock and mechanically unmodified. I do however have my v500 controlling the BTR so the box is correctly programmed to cope with the extra power & torque and it's still functioning fine with all the abuse I give it daily. I guess what I'm saying is that while the BTR can always be mechanically modified to cope with lots more grunt, just programming it correctly allows it to function far better than OEM factory programming does, preventing any unnecessary strain on the BTR.
_________________ 5.6L of carbon footprint. |
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| the sam |
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jaysway wrote: the sam wrote: What causes them to break is box flex. When you get box flex due to high amounts of torque it increases the clearances between gears and ends up causing chipping and fracturing of the gears, then KABOOM. you got any more info on this? iv never heard btr gears chipping and fracturing.. im pretty sure your confused with the t5 here.. Sorry, i meant that is what happens with the t5, but i assume with the same casing construction material you would see some similar results?
_________________ LOW, LOUD AND LUMPY |
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