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Re: Rolling road day??

Posted: Mon Nov 02, 2015 5:45 pm
by rmc123
Looking forward to it.

Re: Rolling road day??

Posted: Tue Nov 03, 2015 9:42 am
by woody
Whats the address for the rolling road, may get along.

Re: Rolling road day??

Posted: Tue Nov 03, 2015 12:15 pm
by BERT

Re: Rolling road day??

Posted: Fri Nov 06, 2015 7:20 pm
by mustard
Bump for tomorrow!

Re: Rolling road day??

Posted: Fri Nov 06, 2015 8:34 pm
by woody
Should be there tomorrow. Hope someone is bringing a standard MPi so I can compare againest my MPi engine fitted with a carb, should be interesting

Re: Rolling road day??

Posted: Fri Nov 06, 2015 8:45 pm
by Dylan8660
Bringing the mpi but certainly not standard!

Re: Rolling road day??

Posted: Sat Nov 07, 2015 12:59 am
by purplehaze
Car currently has no calipers on her so, Nxt time I hope

Re: Rolling road day??

Posted: Sat Nov 07, 2015 3:01 pm
by macker
Any results in?

Re: Rolling road day??

Posted: Sat Nov 07, 2015 3:52 pm
by BERT
There been emailed out next week,good day we'll worth the spin out

Re: Rolling road day??

Posted: Tue Nov 10, 2015 5:59 pm
by woody
Sorry I didn't make it Paul, terrable missfire in the rain.
How did people find the guys running the rolling road and advice they gave. Would yous recomend them for a tune up of the mini?
Any idea what they charge?

Re: Rolling road day??

Posted: Wed Nov 11, 2015 2:55 pm
by Dylan8660
I'll kick this off. I was trialling some new injectors in the hope that they would give me a genuine 90Bhp MPi but as you can see it didn't quite attain that level, beat that torque though!

Image

And here's the reason why it started to tail off at 4000rpm.

Image

So I've fitted a less restricted cat :wink: and I've calculated that based on those readings it should hit 90 at around 5700 rpm so I'll head back down one of the days to try again.

Re: Rolling road day??

Posted: Wed Nov 11, 2015 3:00 pm
by Billy
Is that a photo of inside the cat, Dylan?

Re: Rolling road day??

Posted: Wed Nov 11, 2015 4:35 pm
by Dylan8660
It is Billy, only 3 months old, my refurbished cooper head was seeping oil between the new guides and the casting, all sealed up now though.

Re: Rolling road day??

Posted: Thu Nov 12, 2015 10:46 am
by woody
Can you explain to me what the two curves are?
Did you change anything between the runs?

Re: Rolling road day??

Posted: Thu Nov 12, 2015 5:18 pm
by Dylan8660
Woody, the top curve is torque the other power. Power and torque are related as Power = Torque X Angular Velocity (revs).
Personally I prefer to see a good wide torque curve as that represents my style of driving and suits the long gearing of the mpi. Bhp is pub and Top Gear talk as far as road cars go (but it sells). It is only achieved at the high end of the rev range which suits race cars that operate in that area with close ratio gearboxes.

The top three results were with standard injectors, the other four were with my special upgrade ones fitted. I'm pleased that they gave promising results considering the state of the cat.