How close are the Miami 5.0 and Jaguar 5.0?

[XWGT]

I note the new Jaguar F type R has a 5.0 supercharged V8 producing 404kw.

Magically that is what FPV claim from their 5.0 supercharged V8. Almost identical

Does anyone know technically how close these engines are?

I note no one has any issue with Jaguar quoting 404kw form a blown 5.0. However when FPV did it the world stopped and it was scrutinised to within an inch of its life.

I'd be interested to hear from anyone who knows the tech specs and can expalin the similarities or disparities of these two engines.

[XR Martin]

They arnt related at all.

[Luke Plaizier]

Very good question. The AJ-V8 Gen III was developed under Ford's watch wasn't it, and the Miami came along not long afterwards.

It really does make you wonder how much of one went into the other.


Lukeyson

[XWGT]

Originally Posted by Luke Plaizier

Very good question. The AJ-V8 Gen III was developed under Ford's watch wasn't it, and the Miami came along not long afterwards.

It really does make you wonder how much of one went into the other.


Lukeyson

I know ProDrive did all the R&D etc but I'm sure that Jag was part of the Ford camp around that time before being sold off.

I just wonder what the tech specs of the two engines are and if they are similar

[Rodge]

http://www.imakenews.com/jaguarplano....cfm?x=b11,0,w
Dual VVT and direct injected for starters and I'm pretty sure they're intercooled too.

Also Jaguar arn't claiming anything about over-boost so the 404 kw rating is good for all conditions. I think the compressdion ratio's are similar.

Other than that IIRC the marketing blurb that came out when the SC engine was launched here claimed it had over 40% Austrlaian made content that was unique to the the engine here.

[Bent8]

Originally Posted by XWGT

I note no one has any issue with Jaguar quoting 404kw form a blown 5.0. However when FPV did it the world stopped and it was scrutinised to within an inch of its life.

That's because the Miami 5.0 was being compared to a 6.2L blown & intercooled V8 which only makes an extra (factory claimed) 26kW !

Doesn't look good for the HSV guys having a V8 from the blue team that's 20% smaller in cubic capacity yet making very similar power..

Anyways, both motors have similar capacities (Miami 4951cc vs Jag 5000cc) and almost identical bore and stroke specs.

Also interesting to note the early Jag blown 5.0's made 380kW/625Nm, pretty much the same as the BOSS 335's..

[barnz_xr8]

the Miami/coyote is a modular series engine and a evolution of the 4.6l but with new heads, bigger bore, more stroke, I would say the jag v8 is unique to jaguar/ landrover

[XWGT]

Ok so what I'm gleaning here is that technically they are not close at all.

Thanks for the replies guys

[barnz_xr8]

Originally Posted by XWGT

Ok so what I'm gleaning here is that technically they are not close at all.

Thanks for the replies guys

yep probably don't even take same spark plugs.

[madmelon]

They're both very different engines but Jaguar did get one bit of the tech from the Coyote- the cam-torque actuated VCT. That's not to say they have the same cam phasers or anything, just that they use the same VCT actuation concept developed by Ford. I understand it allows for a more complete function at low RPM when there isn't much oil pressure/flow available.

[XBGTFGGTP]

I believe the Coyote and Jag engine both share the same bore spacings and a few other common design principles Even though parts may not interchange.

[BlueOvalPrint]

http://en.wikipedia.org/wiki/Jaguar_AJ-V8_engine
http://en.wikipedia.org/wiki/Ford_Coyote_engine

[FPV GTHO]

Originally Posted by XBGTFGGTP

I believe the Coyote and Jag engine both share the same bore spacings and a few other common design principles Even though parts may not interchange.

I'm not sure on that. The Ford shares it's bore spacing still with the 4.6 Modular, I'd be surprised if it wasn't the same for the 4.2/5.0 Jaguars.

They do both have near square bore/stroke ratios though