I want to discuss this in here if anyone has any questions, but here is the release

We have finally finished the cylinder head project that we have been working on. We have been working with DPR Racing who has built this head, and will be building all heads in the future contracted through us to your specifications. I would say that this is one serious upgrade. The car is alot more responsive, and hauls like never before. We will be doing some 1/4 Mile Runs this weekend, but have some dyno tests already. Check Here to see the results. These runs were performed independently by Eric at Helix13.



Pricing will be released very soon. This dyno is the stage 1 ungrade to the head. We have also developed a stage 2 which will replace the valves as well with a larger set.

If you have any questions, please send me an e-mail at Mini@thepilo.com and I will get back to you as soon as possible.

 

Dan,

Glad to hear you are finally coming out with the head modification. Just had my head done by another source. Polished / Ported / Larger Valves and there was a very noticable improvement. Along with my other work I have done ( ECU, Throttle Body, Intake, Header, Exhaust, plus many other non-engine related items ) HP is now at 265 overall, and 224 HP at the wheels correcetd. Lets just say it really motivates when you ask it to ........... love it. Would post the dyno sheet, put since the galleries dont seem to be present, cant upload it.

Good luck to you with the new head !

 

And oh yes, forgot to mention the new schrick cam as well ............

 

Dan, does the dyno chart reflect a MCS with only the new cylinder head upgrade and everything else remains OEM? :smile:

 

do you have any cfm numbers yet with the larger valves? As well wil you sell valaves seperatly?

 

>>Dan, does the dyno chart reflect a MCS with only the new cylinder head upgrade and everything else remains OEM? :smile:


The only diffrence between the graphs is the head change. The car goes have a 15% pulley, intake, Ignition, and exhaust. I feel that is about the level of a car that most people would have if they were to do this mod, so the numbers shown are realistic. The numbers would have been higher actualy if we had pushed the car all the way at the end to the same RPM's

Caddman,
I am getting that information together for you.

Thanks,
Dan

 

Also, The Computer Software on the car was stock. So there would be more gains with a better Computer Curve installed.

 

Hey Dan,

That sounds good, real good. Will you have a head and bigger valves for the MC?

 

We can definatly upgrade a provided head for the MC, Not sure if we will stock any cores for the MC.

Thanks,
Dan
Pilo Racing

 

Nice work, Dan
Why didn't you push that extra 250rpm so that we can compare the hp figures like with like? Based on a bit of extrapolation, the hp increase would be around 10, assuming similar testing conditions.

 

Hubert,

I was not doing the testing, and we did not realize that it was less until after the car was off the dyno. What we are showing was an average run. We had runs with as much HP as 184 (at the same RPM level) and if continued, would have hit higher as the graph was still going up on the HP as the dyno stopped. But we averaged what would have been about a 10 HP gain.

The car feels like night and day compared to before the head was installed.

I actually even still get great gas milage. I'm averaging about 27.5 right now, and that's even with enjoying the new found power.

Thanks
Dan
Pilo Racing

 

I am still amazed at the hp and torque curve of the Mini. For such a small 4-cylinder, the hp is very smooth and linear and keeps going and going. Even at 7500rpm the engine is still climbing. The torque is also amazing, nice and broad and for the most part consistent across most of the rev range. Much different graph than a lot of engines out there, and a reason why the Mini feels more powerful than the numbers sometimes state.

 

>>Nice work, Dan
>>Why didn't you push that extra 250rpm so that we can compare the hp figures like with like? Based on a bit of extrapolation, the hp increase would be around 10, assuming similar testing conditions.


TEst conditions were similar on both runs. Here is the Dyno Chart Extrapolated to show the gains at the same RPM Level. I see about an 11 HP gain on the top end.

Extrapolated Dyno Chart

 

The results look good, but extrapolation like that isn't a good idea. A better comparison would be to show the difference at the highest RPM where both curves were done, around 6500 rpm.

 

I noticed that the dynos are like a week apart. That is fine as obviously changing the head is not 10 min job. But that does have me inquiring about how long would it take one to exhange a head on an MCS. What is involved, approx time or any special tools? Thanks.

 

Pilo did you open up the exhaust port at all? Like we talked about in my other thread? I would be interested to see dyno's taken with stock exhaust. If you are freeing up airflow than maybe a different style aftermarket exhaust would give you more power than the one you have on now. Just a thought.

Quote from Caddman:

 

Is that quote from Caddmanostradamus?

 

easy Andy easy.

 

Nice work Dan!! Do you see any advantage to a header and intake manifold porting mods to go along with the head. Eric feels the headers do not make power, but would that change with the head work ie increased breathing?

Thanks

Look forward to hearing news on the supercharger!

 

Let me try to address all of the question real fast.

The head swap is a 2 day process as long as your mechanic has the time to do it. It will be about a 8-10 hour billable install. Regarding the core. I would like customers to talk to there install shop prior to ordering so that it can be arranged for the best turnaround for every one.

We opened the exhaust port, rounded the valves, opened the intake, rounded the vavles, as well as opened up the runners for both, manifold section was also increased for a smoother flow. Headers would definatly help this breath better, and would probably show some good gains with this installed. Same thing for the intake manifold. You would probably want to do throttle body before the intake manifold though.

Andy,

The extrapolation was actually the earlier graph posted ontop of the other graph to give a linear movement up. This way, we did not change the diffrence from the time that the rpm's stopped to were we ended the top of the graph. So we are basically doing what you said, just shifted to the right. E-mail me if you want to discuss that further.

 

Where's your actual dyno showing 187.5 whp? I can extrapolate my car's dyno to show 300 whp if I go far enough.

 

Andy, Andy you just dont stop do you?
So you disagree with my statement? Even though i said it needed to be tested....

 

>>Where's your actual dyno showing 187.5 whp? I can extrapolate my car's dyno to show 300 whp if I go far enough.

Andy,
No offence, but I never said that I did. I said extrapolated to the same RPM. IF you want real Gains, I have proven it. I have shown actual dyno runs that show Good Gains. The Extrapolation that I did was LINEAR to the base line run. This means that the gains shown at the top RPM are the same as the point at which the second Dyno run ended. Anyway, it's not going to be 187.5, that is the point on a line. The graph does not go up to that line. I am not talking about drawing a Random Graph of 300 HP, but using a conservative Extrapolation of the Given Data.

Come out to English town on saturday, and you can decide whether my car is faster or not.

 

Henry James was the master of thr run-on sentence.

 

AH yes, grasshopper, but who was the master of subversion?

Man you gotta love the 'net.

Marty