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topcatcustom
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O M F G ! ! ! ! !

Post by topcatcustom » Sat Jun 12, 2010 10:55 am

Car went on the rollers today, the guy couldn't find anything else to change that I hadn't already done, mixture and timing were pretty much spot on 8)

Made 368BHP at the crank and 330BHP at the wheels!!! - oh, at 7k :shock: :lol: Torque was 276ftlb

So I was amazed! I was genuinely expecting 100bhp less, the graph shows NO curve whatsoever, power is just a straight line all they way up! Best torque is between approx 4&6k so I'll never have to use all the revs, just as well as it is a stock bottom end so wont see that high rpm when I'm driving it!

Here's the chart:
Image


TC

mgbv8
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Post by mgbv8 » Sat Jun 12, 2010 2:38 pm

Thats bloody brilliant Tom 8) 8)

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kiwicar
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Post by kiwicar » Sat Jun 12, 2010 6:55 pm

That is one serious power curve (or as you point out straight line) to get it that straight you have built a very well balanced and matched set of parts and they produce very good power. What boost are you running? 8psi? if so then the base build without the blower must be worth over 235 ish which is a hell of allot for a rover in road spec. Well done!
Best regards
Mike
PS now let us see what you can do with a big block :D
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Ian Anderson
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Post by Ian Anderson » Sat Jun 12, 2010 9:18 pm

What capacity Rover is under the blower?


Very nice figures

Ian
Owner of an "On the Road" GT40 Replica by DAX powered by 3.9Hotwre Efi, worked over by DJ Motors. EFi Working but still does some kangaroo at low revs (Damn the speed limits) In to paint shop 18/03/08.

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topcatcustom
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Post by topcatcustom » Sun Jun 13, 2010 2:41 pm

It is a 4l Ian, and Mike it is running about 7psi boost- tbh I dont really look at the boost gauge when pedal is to the metal- too busy looking ahead!
TC

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JJMclure
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Post by JJMclure » Mon Jun 14, 2010 12:56 pm

Cool! Must be a good feeling to get more than you expected, Congrats!
don't nibble on the barrel, pull the trigger!

bigaldart
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Post by bigaldart » Tue Jun 15, 2010 9:22 pm

hmmm, have to seriously consider going big bore in the dragster now, just that could get us to 500hp with the same boost we run now. Great job Tom the 11's are waiting.

Alan

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Rossco
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Post by Rossco » Tue Apr 26, 2011 4:22 pm

Dont want to spoil anything here but that curve is too straight.

According to that curve your engine was still continuing to make power at 7k when reason would have it that a Rover with all it's limitations should be well past it.

With a blower motor I'd be expecting to see a much flatter torque curve.

Also at 7psi you could expect a max of 45% more power than a N/A engine therefore you'd need to be pulling 253bhp in N/A form to hit the figures shown above.

I'd be asking a few questions of the people who did the power run before being quite so happy with the result

......of course I'm usually wrong :D
F Type......the new BL Allegro

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