Twin engine GTP project progress thread

[penright]

Now that I think about it, I was wrong anyways...it'd be similar to a shift going down a steep hill...in your case a STEEP hill.

Just thinking out loud...
On a normal setup, going down a "steep" hill, off the gas, there is no engine compression braking. If you pull it into a gear that is slower than the engine speed, then you have compression braking which would cause stress on trans parts. With both engines under power is the trans locked into that gear?

the Tq converters will stall as much as they need (slip) to equalize the load depending on the traction/load, that the beauty of a viscous tq multiplying drive.

Do not these torque converters have a clutch? Seems like one of the comments in the thread for the turbo project car, had a great link to transmission description. If I remember right, the PCM commands (don't remember the conditions) the trans and fluid is applied though the input shaft to the converter and it locks a clutch. Would this not be the same here? Could you turn that off on just the rear engine? How do AWD allow differential(ing)?

Again, just thinking out loud.

[Turbocharged400sbc]

Do not these torque converters have a clutch? Seems like one of the comments in the thread for the turbo project car, had a great link to transmission description. If I remember right, the PCM commands (don't remember the conditions) the trans and fluid is applied though the input shaft to the converter and it locks a clutch. Would this not be the same here? Could you turn that off on just the rear engine? How do AWD allow differential(ing)?

Again, just thinking out loud.

when the engine is not running the pump is not pumping fluid so no circuts get any fluid to lock or unlock the clutch which doesn't matter since none of the other clutch is engaged. but the differential and the output drive will still be turning at which point you need a pump to push fluid through the system and lubricate it.
as long as you don't have the f****** shifter in park you're good at that point lol

[penright]

when the engine is not running the pump is not pumping fluid so no circuts get any fluid to lock or unlock the clutch

I hear you. I speaking to the one theory of why the chain broke or better said why it was ruled out as a possibility(front and back trans : gear ratio/actually selected gear at the time/size of tires/engines RPM). It was ruled out as a possibility because of torque converter slippage. My question was do they not "lock up" when commanded to? How does this effect synchronising the front/back? May still not have any thing to do with it, just asking.

shifter in park you're good at that point lol

Ouch. You could lay a long set of "burnout appearing" marks dragging the rear. Or at least as long as the trany held.