torque or bhp kills t5 box ?
#1
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torque or bhp kills t5 box ?
just sat here thinking about this. my old car had 30 psi t4 boost spike at about 4k and came in very hard and would regularly trash 2nd or 3rd gear. my current car has less torque low down but more top end bhp and no gearbox trouble whatsoever so is it the big punch of torque power low down that kills a t5 ?
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#11
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Rod said Colin Chapman and now we have Henry Ford!
Its a GHEY load of crap anyway F1 cars have less Torque than a lawnmower and seen to do ok!
#12
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Or more specifically, low down torque kills gearboxes .
This is why T34 equipped cars with big mid-range spikes kill MT75s as soon as look at them, but T4 equipped cars with the same peak torque (albeit higher up the rev range) give them an "easier" time and they last "longer".
This is why T34 equipped cars with big mid-range spikes kill MT75s as soon as look at them, but T4 equipped cars with the same peak torque (albeit higher up the rev range) give them an "easier" time and they last "longer".
#15
Or more specifically, low down torque kills gearboxes .
This is why T34 equipped cars with big mid-range spikes kill MT75s as soon as look at them, but T4 equipped cars with the same peak torque (albeit higher up the rev range) give them an "easier" time and they last "longer".
This is why T34 equipped cars with big mid-range spikes kill MT75s as soon as look at them, but T4 equipped cars with the same peak torque (albeit higher up the rev range) give them an "easier" time and they last "longer".
I would guess that the T34 cars kill boxes fast as they generate that torque FAR FAR more of the time because its easily accessible in daily driving, where as T4 power is not.
#16
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I thought it was all due to the tractive effort that is put through the gearboxes at lower speeds. The greater the torque low down, the more tractive effort is transferred through the gearbox, but at higher rpm (and therefore road speed) the tractive effort has tailed off and is putting less load on the gearbox.
#19
I thought it was all due to the tractive effort that is put through the gearboxes at lower speeds. The greater the torque low down, the more tractive effort is transferred through the gearbox, but at higher rpm (and therefore road speed) the tractive effort has tailed off and is putting less load on the gearbox.
#20
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The same would apply if you are cruising in 3rd and then put your foot to the floor as well I think.
#21
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i was constantly breaking boxes on my T34 55lb setup,
the last one broke in 5th gear at 35mph 1500rpm after cruising off the motorway ....dabbed the throttle and BANG....stuck in fifth, gear lever lurched forward.
the t34 as stu said uses all its power all the time, and very early, it does come in with a bang to
oh, front diffs dont like it up em either
the last one broke in 5th gear at 35mph 1500rpm after cruising off the motorway ....dabbed the throttle and BANG....stuck in fifth, gear lever lurched forward.
the t34 as stu said uses all its power all the time, and very early, it does come in with a bang to
oh, front diffs dont like it up em either
#22
Caraholic
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i was constantly breaking boxes on my T34 55lb setup,
the last one broke in 5th gear at 35mph 1500rpm after cruising off the motorway ....dabbed the throttle and BANG....stuck in fifth, gear lever lurched forward.
the t34 as stu said uses all its power all the time, and very early, it does come in with a bang to
oh, front diffs dont like it up em either
the last one broke in 5th gear at 35mph 1500rpm after cruising off the motorway ....dabbed the throttle and BANG....stuck in fifth, gear lever lurched forward.
the t34 as stu said uses all its power all the time, and very early, it does come in with a bang to
oh, front diffs dont like it up em either
#31
Happily retired
Mr Shelby actually said it, I was incorrect & went to check it some time back.
Hes spot bollix of course unless you have 19k revs to wind up, which didnt happen when that quote was made. .
#32
Professional Waffler
shelby is talking out of his arse lol
my torque wrench has 300 lbs/foot of torque and it wouldnt win any races lol lol
people get so confussed about the ralationship with torque and power!
torque is a force acting at a length, BHP is "work done"
my torque wrench has 300 lbs/foot of torque and it wouldnt win any races lol lol
people get so confussed about the ralationship with torque and power!
torque is a force acting at a length, BHP is "work done"
#35
Professional Waffler
"less tourque per teeth" this isnt true, a tooth might see the torque for a shorter period of time, but the unit of torque id the same!
#36
#40
PassionFord Post Troll
1/4 MILE breaks selector forks
track days break gears....
If you a top speed or point and squirt person the box is very strong
On track its very weak.
5 standard boxes and 5 bernie rebuilds on a quaife later.....it seems to work LOL...
track days break gears....
If you a top speed or point and squirt person the box is very strong
On track its very weak.
5 standard boxes and 5 bernie rebuilds on a quaife later.....it seems to work LOL...