Thread: 3.9 to 5.0 litre

So getting back to the original post that started this whole discussion, poor old Lambo who asked the original question is still none the wiser about how to fit a 308 to his Disco.

But on the bright side he now knows if he ever finds out how to fit a 308 that he can with a bit of fiddling get upto 700 hp out of it if he wants to spend the big buckeroos.
I'm sure going from about 200 hp to 700 hp will assist your 4 wheel driving experience immensly.

As well as that he has also found out that all Rover V8's apart from the trusty real old 3.5 are pretty much utter crap.

Anyway Lambo good luck with sorting something out with repowering your Disco. Have you got any other important questions you need a quick and definitive answer too?

cheers,
Terry

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QUOTE=Hardchina;1270967]here's some, did a dodgy cut and paste from trs.. link for the pics. - Our Motorsport Involvement - Triumph Rover Spares South Australia


you guys are funny, bagging the stock rover engine for been gutless - comparing it to worked 308's
Apples with apples..... aparently you can also do work to the rover donk !!

you have missed the point...the same point the other pro ''other V8'' posters have said.

you cant spend the same amount of $$$$$$ on the rover V8 to get the same HP and reliability as other mentioned V8's.

take the LJ in my photo and do the same work to a rover V8, now stick it in and see how you go down the quarter. bet its not close to the holdens 1/4mile times.

dont get me wrong i do like the Rv8, ive got a worked 3.9/4.0 in the ute, built by john davis, but its a slug even compaired to my TD5!
john davis wont build a rover V8 for his bushrangers anymore, his words were '' why? when i can build a N/A gen 3 that makes 1000hp on pulp?''
now thats a telling comment from a bloke sernonomous with the mighty rover V8.

cheers phil

I agree with most of the stuff in the previous posts

but i still think the rover V8 can be made plenty powerful for everyday use fairly cheaply

And if we compare the Rover to the GMH 253 not the 5.0 or 5.7 it is a much better motor

Comparing a 3.5 or 3.9 to big block isn't a fair comparison

If you do the same mods to each motor and used the same car The Rover V8 will win every time
just my opinion

HardChina , all that guff from triumphroverspares clearly describes BLOWN engines in ultralight vehicles . 25 PSI of boost roughly translates to tripling the amount of power over its Naturally aspirated form (Eddie Tassones 308/383 runs that sort of boost and makes 2000HP). As can been seen from the latest Range rovers and Disco's , the manufactuer is fitting them with 300fwhp NA and 400fwhp Blown ,Also with 350 to 500 ft lbs of Torque . Im glad the OEM has finally dropped the old Rover V8 as it was just a dinosaur . It appears that even the OEM believes that for a decent driving experience , these new levels of engine performance are required to have competitive product along with modern day fuel efficency requirements. So todays rangie has more than twice the power , weighs more , yet returns better economies than anything fitted with the "Rover" V8 in any of its guises .The TDV8 and TDV6 are outstanding Oilers , lucky they share nothing from the old Rover V8 !!!!
PS The new rangie with supercharger is reported by Landrover as 375KW , now thats getting near the old 500HP range isnt it ? Why on Earth would they make these things when the old diehards are quite happy with 150 HP !!!

Originally Posted by 400HPONGAS

HardChina , all that guff from triumphroverspares clearly describes BLOWN engines in ultralight vehicles . 25 PSI of boost roughly translates to tripling the amount of power over its Naturally aspirated form (Eddie Tassones 308/383 runs that sort of boost and makes 2000HP). As can been seen from the latest Range rovers and Disco's , the manufactuer is fitting them with 300fwhp NA and 400fwhp Blown ,Also with 350 to 500 ft lbs of Torque . Im glad the OEM has finally dropped the old Rover V8 as it was just a dinosaur . It appears that even the OEM believes that for a decent driving experience , these new levels of engine performance are required to have competitive product along with modern day fuel efficency requirements. So todays rangie has more than twice the power , weighs more , yet returns better economies than anything fitted with the "Rover" V8 in any of its guises .The TDV8 and TDV6 are outstanding Oilers , lucky they share nothing from the old Rover V8 !!!!
PS The new rangie with supercharger is reported by Landrover as 375KW , now thats getting near the old 500HP range isnt it ? Why on Earth would they make these things when the old diehards are quite happy with 150 HP !!!

Thats exactly it but there will always be luddites. The die hards all talk about bottom end where they should have bought a diesel. The new engines will pull for much much longer and probably still have twice the torque of the old Rover V8 at those low revs.

Originally Posted by discowhite

[


you have missed the point...the same point the other pro ''other V8'' posters have said.

you cant spend the same amount of $$$$$$ on the rover V8 to get the same HP and reliability as other mentioned V8's.

take the LJ in my photo and do the same work to a rover V8, now stick it in and see how you go down the quarter. bet its not close to the holdens 1/4mile times.

dont get me wrong i do like the Rv8, ive got a worked 3.9/4.0 in the ute, built by john davis, but its a slug even compaired to my TD5!
john davis wont build a rover V8 for his bushrangers anymore, his words were '' why? when i can build a N/A gen 3 that makes 1000hp on pulp?''
now thats a telling comment from a bloke sernonomous with the mighty rover V8.

cheers phil

1000 hp naturally aspirated hey! And on PULP.Tell him hes dreaming I think he would mean with a a couple of big turbos sitting on the side of it.In the end it all comes down to how much money you want to spend on it.The Gen Motor is a great motor and so is the Rover V8.You just have to remember that the Rover motor has been around for a few more years the the newer Gen motors and are generally running over 200.000km on them.
If you want to run a little more horsepower on the Rover V8 motor then i would recommend a twin turbo set up.I have a single turbo set up on a Rover SD1 and it would put the HSV R8 to shame .And with better torque then a 5.7. (If you only saw the look on his face)
It didnt cost me much to do.Dont let people tell you its going to cost you an arm and a leg to do because it doesnt have to.Just do your homework properly and you can have the best of both worlds.

Originally Posted by 400HPONGAS

HardChina , all that guff from triumphroverspares clearly describes BLOWN engines in ultralight vehicles . 25 PSI of boost roughly translates to tripling the amount of power over its Naturally aspirated form (Eddie Tassones 308/383 runs that sort of boost and makes 2000HP). As can been seen from the latest Range rovers and Disco's , the manufactuer is fitting them with 300fwhp NA and 400fwhp Blown ,Also with 350 to 500 ft lbs of Torque . Im glad the OEM has finally dropped the old Rover V8 as it was just a dinosaur . It appears that even the OEM believes that for a decent driving experience , these new levels of engine performance are required to have competitive product along with modern day fuel efficency requirements. So todays rangie has more than twice the power , weighs more , yet returns better economies than anything fitted with the "Rover" V8 in any of its guises .The TDV8 and TDV6 are outstanding Oilers , lucky they share nothing from the old Rover V8 !!!!
PS The new rangie with supercharger is reported by Landrover as 375KW , now thats getting near the old 500HP range isnt it ? Why on Earth would they make these things when the old diehards are quite happy with 150 HP !!!

I thought we were comparing the rover engine to a 308 ?
(if you're trying to make me look silly, dont bother i can do that all by myself )

I'd certainaly swap out the 3.5 for a gen111 or the latest rangie supercharged beast - as long as it were a real cheap option. Although I have no desire to have a 500hp 1985 county A 500hp RR sport would be nice... but my little 3.5 powered county would **** all over it off road, so why bother ??

How much power can you really use in an old rangie / disco ??
I know you can use it all on a dyno
maybe for comp's heaps of power would be cool, but on road, bush bashing, dropping the kids off to the footy

Im glad the OEM has finally dropped the old Rover V8 as it was just a dinosaur .

holden dropped the 308 for the same reasons.. but they did it first !

I think there's one thing we can all agree on

They sound so much better than the other 4x4's its not funny

I sure wouldn't swap it for a cruiser or a pootrol's motor