200mph advice

motherofgod · Post by **motherofgod** » Tue Apr 22, 2008 4:13 pm

For the record I've been offered a 5.3 for 3.5k so I don't thinkit's that to hard.

but it's answering my main query whether to stick to the rover. I can get a LS 1 plus 6speed tremec for similar money. Not sure on the iron block thou with weight wise although it could help stability at speed.

thanks again

James

chodjinn · Post by **chodjinn** » Tue Apr 22, 2008 4:35 pm

fair enough, but does the 5.3 have low comp forged pistons etc. in it already? You'll need them to run big boost, which you'll need to get big power. My advice is stay the hell away from a rover!

stevieturbo · Post by **stevieturbo** » Tue Apr 22, 2008 4:59 pm

Trying to achieve 500+ on ANY Rover V8 ( with the exception of a Wildcat perhaps ) is a lost cause.

And on the versions which could do it, it would cost an absolute fortune.

Buy a cheap LS variant, either in Aluminium or iron block ( 5.3 alloy, or 6.0 iron ) and you will have a cheap, strong platform capable of making power that a RV8 would only dream of, at any cost.

Although that link earlier of the 5.3 with an MP70 turbocharger. I dont think is possible that combo would ever make 900. The turbo is too small. More like 7-750 at most. And the cars track times reflect about 6-650bhp IMO from the videos I could find on Youtube..

motherofgod · Post by **motherofgod** » Tue Apr 22, 2008 5:04 pm

Steve/chod

I agree I suppose Iwas just seeing if the rover could stay, but I think not

There some nice packages on the web, although more than 5k but Very interesting. Right anyone want a e type

James

Eliot · Post by **Eliot** » Tue Apr 22, 2008 5:44 pm

definately bin the rover engine. Even if you fit a LS1 without the turbo's as an interim goal of an easy 150-160 then add the forced induction as the next phase.

bill shurvinton · Post by **bill shurvinton** » Tue Apr 22, 2008 6:38 pm

stevieturbo wrote: Although that link earlier of the 5.3 with an MP70 turbocharger. I dont think is possible that combo would ever make 900. The turbo is too small. More like 7-750 at most. And the cars track times reflect about 6-650bhp IMO from the videos I could find on Youtube..

I can find out exact numbers and the dyno type if you are interested.

stevieturbo · Post by **stevieturbo** » Tue Apr 22, 2008 6:45 pm

Looking at the vids....its running very high 6's or low 7's at 98-104 or so over the 1/8th.

I know other LS automatic cars with about 800+ would be doing that in low 6's at 110-115mph.

Although the vids are maybe a different spec etc.

But using the 5.3 would be the cheapest starting point for a budget stormer. They are very cheap compared to the alloy 5.7 or 6.0 engines.

motherofgod · Post by **motherofgod** » Tue Apr 22, 2008 7:17 pm

Sorry did I miss a vid with 5.3 turbo?

any numbers will always be useful bill

cheers

James

bill shurvinton · Post by **bill shurvinton** » Tue Apr 22, 2008 8:04 pm

James: The youtube link that I posted first off shows the build and initial dyno tune.

Stevie: I know the numbers were being kept secret cos of some competition, but I think are now available. The flywheel figure I was told was just shy of 900. Now of course that could be 25% ontop of the wheel figure from a dynojet, which would probably put it in the 700 area in real life, but worth me checking.

Certainly a good junkyard type build whatever they are getting

motherofgod · Post by **motherofgod** » Tue Apr 22, 2008 8:10 pm

thanks Bill, just been lookin

Although firstly I thought you meant a rover 5.3!

But defo show's what can be done, just need to strap the minor to the floor!

James

kiwicar · Post by **kiwicar** » Tue Apr 22, 2008 9:41 pm

If you find a 6.0 or a 5.3 LS* and get the manual box with it it will be a T5/6..... save alot of hassel when it comes to trying how to gear it for 200+ mph That extra gear will save alot of potential expense when it comes to getting the thing to pull away in first and pull to top 200, the power band can be 500 - 600 revs narrower with the extra gear which would equate to alot of saved money when it comes to tuning the thing. Thinking about it a 700 -750 bhp 5.3l based around a single big turbo would do it with the 6 speed and you should be able to build it on your budget if you do alot of it yourself, but it will be tight.
Mike