Stage 1 of MotoringSpeeds 1st Project Car has been successfully completed. With only 3 hours of tuning on AutoScope's DynaPack dyno Jan of Revolution MINI Works found quite a bit of power. The MINI, a bone stock 04 example with ~ 24K miles on the clock was transformed into a tire smoking Chesire Cat sized grin producer. Three weeks from concept to reality with Will of Bob's Tire and Auto in Lewisville, TX deftly handling the mechanical end in a scant 6 days.

A baseline dyno at the beginning of the project in cooler weather netted 147.7WHP at 6307RPM with 148.5Ft/lb at 4051. A quick base flash was installed to scale the 440cc injecters to prevent fouling of sensors during the trip to the dyno. The first pull returned 207WHP and 162Ft/lb. Capable tuning yeilded a final result of 230.5WHP at 7414RPM and 184.1Ft/lb at 4872RPM. What the numbers, as impressive as they are, do not show is the 170+ft/lb available form 3200-7100RPM. See the scan below.


Mods:
RMW Head
RMW Cam
RMW Adjustable Cam Gear
RMW Header
RMW Exhaust
ARP Head Studs
440 Injectors
CravenSpeed CAI
CravenSpeed 15% Pulley
Quaife
ClutchMasters Stage 3 Clutch

 

nice numbers. what's the benefit of the cam gear? that's teh one thing we didn't do on my (besides the clutch).

 

Can all this be done to a MCSA. Has it been done? Minus the Quaife &
ClutchMasters Stage 3 Clutch

 

Retarding the camshaft timing will generally shift the powerband upward, increasing top-end power. Conversely advancing the camshaft timing will shift the powerband downward, allowing for increased torque at lower RPMs. However since we are supercharger speed dependent and the S/C does not really come into play until around 3K RPM advancing the camshaft is somewhat useless on an MCS.

 

Benefit=precise custom cam timing and ability to alter cam timing(advanced or retard) fairly quickly. With no adjustable cam gear we are limited to rotating cam/timing chain from sprocket to sprocket right? The adjustable cam gear will allow infinite adjustments between sprockets.

Jeremy

 

Nice, very nice.

Hey, I live in Texas... can I get one of these???

 

Nice thoughts about cams jhiggs I have read a couple of your comments around...you have a MINI now not a Detriot Hot Rod !

I may be wrong but having an adjustable cam gear is great if Jan is going to be around to re tune after making any cam timing adjustments. I would think the purpose on the MINI engine is during Dyno/Tunes to play around with adjustments to find the optimum cam timing for a given RPM operating range. It is kinda like changing cams only not. Any changes in that area effects the final tune I believe. At least on every other engine out there. I used them on DETROIT steel long ago before ECU's

 

Regarding advancing the cam for more low-end power, I was just wondering if a faster closing bypass valve, ie the Detroit Tuned one, would make any difference in the equation. Obviously it doesn't affect the s/c speed, but would the fact that it closes faster and therefor helps the s/c start producing boost faster help with an advanced camshaft making more torque down low?

 

Forcefeed yes. I have every thing in my car, but I have a 17% pulley & a 2% crank pulley. I'm running 380 injectors. The problem is getting the car to stay in gear long enough. Mine has been upshifting at 6500 rpm's, so the numbers are a little low. Jan's working on it.

 

Obviously people think differently about this than I do, but I would question the idea of doing all of this work with an automatic behind it. If they beefed up the 6sp manual in the JCW for a 36 horsepower difference, I would have to wonder about the life of the Aisin automatic when backing up big power...

 

Our auto S was pushing 201 whp and I think that's all that I would be willing to put to that transmission. Not to mention there is no posi in it, so you can't use the power low end anyways.

 

Thats a nice suggestion. You have got real knowledge for these things.