Ford GT on the rise...

A

AndyMan04

New member
apparently Ford is going to announce the Ferrari slaying Ford GT once again at the Detroit Auto Show.

http://www.motortrend.com/future/future_vehicles/1410_future_ford_gt_first_look/

but there is something else that caught my attention,... if you read a few paragraphs down, he mentions the SHO and how it can easily produce 600hp..
"I remember years ago at the launch of the Taurus SHO -- one of the first vehicles to receive the 3.5-liter EcoBoost mill -- an engineer explained that while the SHO only makes 365 hp, the engine can easily produce 600 hp and still be reliable."

Looks like the Blue Oval is scoring some points as I am sure the new Corvette ZL1 will probly be announced around this time too.
 
IHeartGroceries said:
What's easy for Ford seems not so easy for owners!

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The limits that we SHO owners seem to be hitting is the transmission NOT the engine.
 
I don't know if that is necessarily true.  It is my understanding the transmissions can handle more than 600 hp.  I would ask, how many transmissions have failed thus far?  I can count reading only of a few on this forum that have had issues.  Not suggesting that this statement is wrong, I would just suggest the transmission can handle more than we think. Time will tell.

vernonator said:
IHeartGroceries said:
What's easy for Ford seems not so easy for owners!

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Click to expand...

The limits that we SHO owners seem to be hitting is the transmission NOT the engine.
Click to expand...
 
I haven't heard of anyone snapping any axles yet and it's my understanding that our AWD bleeds power forward when it hits its max power handling.
 
I thought the rear was limited to delivering 150 foot lbs or something miniscule like that. There's still an embarrassing transfer unit up front which has a scarily limited amount of oil calacity. It's saving grace seems to come from auxiliary cooling found on interceptor and PP models.

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I'm not sure anybody really knows the answer. Lots of conflicting data on the interwebs , its been written that they went back to haldex because the ford in house version couldn't take Ecoboost power. Allegedly our system can go 100% to the rear too, but who knows.

I think crash works at Chicago plant, maybe he could get some answers.

short of that my plan is the get pics of casings and stampings the next time the car is in the air and see if I can figure ot out.

if it is Haldex, they are quite stout and will bleed power to protect themselves. And I think they're rated for like 2200+ lb ft of torque.
 
I can get you some pictures of the rdu if you would like. Just tell me what parts and I'll do it. I assume there is a sticker or plate on it somewhere.
 
Not all Haldex designed systems are created the same. They are designed like anything else which is contracted out - "design a system for our vehicle, here is your budget."
So, throwing out any tq figure is a bit of a blanket statement across platforms/designs. I can tell you the Haldex system on my Speed6 wasn't good for that rating.

I don't know about "bleeding power". Typically their systems use an electromagnetic clutch which is controlled via a duty cycle from the TCM/ECU, based on sensor feedback. It's as simple as actuation at the clutch to increase or reduce rear drive TQ. The TQ is always there, from front transfer unit to DS. It is managed to the rear wheels by the clutch.

Also, they're typically not very intelligent systems. Their failsafes are temperature based - shut down when a temp sensor feedback reaches a threshold.  the rear unit is LSD, then tq is managed by mechanical means. I think we have an open diff? ABS/TC might apply brake on the SHO to individual wheels to control slip.

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When I got my LMS tune they took me on a tour of the shop and when I asked about the AWD system they said when you're driving down the road you have 65% at the front 35% rear. They also said that there is no point at which the rear wheels cut out from too much torque. It is also my understanding that power is directed in such a way as to improve handling by balancing it differently through corners. There is a video of someone with the AWD gauge enabled and under heavy accel you can see that more power is going to the rear wheels.
 
But, it's never a 50/50 split. It is incapable.
If it is low load and non slip conditions, like cruising, it's almost certainly 100/0 or 95/5. It ramps up tq to the rear under load, or if TCM/S detects slippage, by means of electromagnetic coupling. And I thought I'd seen a spec sheet at some point which stated something like a max split of, as you mentioned, 65/35.

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I have had my awd gauge active for awhile now and after watching it. I can tell you on the highway there is less than 10% activity in the rear. It is all front for fuel milage. Even under wot at any speeds above 70 there is very little rear power activity. Now granted this is just a gauge and not actual power figures I cannot say as to what amount is there. Only representation of distribution.

I can make a video of several senariao's if you would like. I do know that brake boosting does activate the rear more effectively than just flooring it from a stop.
 
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