It is not that simple....heat is a large factor.... if they can get the boos up and keeep the temps low... wa-lah.... magic..... read Dr O's comment..... anyway, relax...no one knows yet what is going to happen that is why they call it Research and Development .... and that is the phase we are in.....

 

This comes with booze!!?? It is way better than the M45!

 

Another factor, I believe was already mentioned, will be less parasitic drag on the engine with the larger pulley. Keeping heat down will be key in this equation.

 

no you stated that
My point is that it is possible you can make more efficient HP with a overdrive on a m62 then smaller pulley on a m45, that's it. No worries -- Johan

 

All I have to saw is holy cow that is one hell of a pull through 3 gears with that SC!!! the road was short and getting up to 70 or so in 3rd gear was all we could manage where we were)

I really enjoyed the ride and have already committed to get teh SC setup as soon as they are ready to ship full kits and more importantly that I am ready to shell out the $$$$ to pay for it. This is definitely not a mod I was preparing for until next year (that is major components such as this) but may end up being an early xmas present to myself.

The car defintely has a lot more power. It is a huge kick in the pants that I was not expecting for a bone stock car with a new SC and a air intake. I like to think my car has some pull with only a 15% pulley, AGS and DFIC but I was taken for a nice ride in the 62 car....

It was nice to see how Dave manufactured a bracket and installed an electronic water pump to keep coolant flowing for 5 minutes after the car is shut off. The fit and finish was phenomenal and It is nice to see such a big mod so stealth!

Dave is an amazing guy to meet and I forsee my visiting their shop more often to work on some projects I have in mind.

chris

 

It may be efficient horsepower. But not more horsepower. Yes more than M45. But not more than a stock pulley on a m62

 

I have tried to be very conservative in my comments but your right Chris.... this is something special.......I'll let you know when they call......

 

honestly, it is so premature to comment on this kind of stuff......everybody wants the biggest numbers while operating the engine safely..... no one is interested in "detuning" this engine..... the whole idea is to make something special......size of pulleys etc will be determined by performance measured including heat etc...... the numbers will tell them which way to go..... these guys are not new to this... they have been putting 62s successfully on Miatas for 5-6 years......this is not a couple of guys wih no experience saying "what if"

 

You have done a good job... but my a$$ being punched int he seat knows what it likes and it likes the number 62.... enough so that I know the costs associated with this and I am still not backing down!

 

Actually no....you don't.

 

I'm sorry but what do I not have a grasp on?

 

 

Bold added by me.

Very nice. This is sounding more and more like a well thought out upgrade.

Gee....my warranty runs out next month.....what terrible timing.......

 

You're wrapped around the axle about boost.
This has been stated many times here that boost is a factor of resistence to flow in the roots/Eaton design. Boost is NOT the be all end all to hp. It is only one factor.


You wouldn't have said that if you had a true grasp of what's being discussed. Nothing wrong with that just don't get miffed if people try to be, what they think, helpful.

Since there is no "stock" pulley in this implementation of the M62 how can you say that? An M62 may ship to 10 different manufacturers with 10 different drive pulley dimensions. There is no single "stock" pulley for all these implementations.
These guys will in reality be the people that define "Stock".
More power to 'em I say

 

What you don't seem to have a grasp on is that at this point more power CAN be made from going to an oversize pulley. You already know that when you overdrive the m45 by 15% you get a good gain in HP, but you also get heat. That heat is wasted enegy. If you slow the m62 down a little, and were only talking a little, you loose the effective total HP coming out of the supercharger based on boost, but you GAIN HP by lowering the charge temps, and reducing parasitic loses on the engine. If they balance things correctly, they losses they would see for slowing the supercharger down can be made up, and possibly even made better from cooler temps and less engine losses. The end result is similar HP gains, run at less dangerous boost levels.

Boost is not eveything. Efficiency is...

 

Another great thread of bench racing at its finest. I was hoping for better.

 

Nice first post


Buh bye now

 

Obehave expressed it well.. You are getting a greater volume of air in the intake charge with less heat.
I was curious about the drag on the blower since the vanes are larger... I would think the blower would have more drag on the engine. This might not be a factor on a larger engine... but it could be on the 1.6L But not having to drag the water pump might make it less of an issue than the smaller unit.
But there is no free lunch.. the water pump will put extra drag on the alternator..
So bigger blower = more volume with less boost required which equates to a cooler intake charge. Just have to figure out the extra load the blower has on the crank.

 

I am very excited about this This just might knock the tc kit off my mod list....

Also, can we please stop arguing about nonexistant data. As of right now, we have no clue what overdriving will do.... What i did notice, that i didn;t see anybody else comment about, was that the dyno they did was only to 5k rpm. They only went that high because the blower was overboosting the engine. With the oversized pully, they could move the sc rpms down to the point that they could run the engine to redline without worry of overboost. That way we could get realistic dyno figures. Until we get the numbers, all we have here is speculation....

 

im quite excited as well. and being not nearly as performance oriented as some of you are, i enjoy these discusions to see many points of view. hearing all the pros and cons are great.

 

This is a great thread on a great idea! It's exciting to see an experienced bunch of people setting out where no MINIAC has gone before (to my knowledge). My pardon if you have.

While all the boost, oversized, or undersized pulley details will be worked out later on in R & D, if you still want more power theres always other mods out there right?...headers...cat-back....intercoolers etc.

I remembered how the stock SC designed changed with a coating on the inside of the SC for a better seal. Does anyone know if the M62 they are using comes with this or can have it applied later on?

 

Perhaps you didn't pick up on my sarcasm about the vendors and oversized pullies.

And the "stock" pulley I was refering to was the pulley that the M62 was equiped with.

If you guys are so interested in lowering intake temps then why is your intercooler sitting on one of the hottest parts of the car???

However I am very interested to see dyno graphs. However actual numbers don't seem to sell anything on this site.

 

Will you guys stop your b!tchfest I actually want to see what awaits in this thread. I will be pissed if it's closed because of your little arguments. Get the hell along. We're all in this for one reason, wait and see what turns out before you speculate.

Mikey

 

i see the trolls were out in force last night...

 

I can only offer some info regarding the IC location. It is far from optimal but it is the only place on the Mini that you can reliably mount a intercooler
that will not loose boost and still keep your air conditioning. The utilization of a DFIC in this application will also assist in keeping under hood temperatures down . When the TC guys get wind of this and realize how much it could help keep their meltomatics in line they should be happy as well.

Randy
M7 Tuning