http://www.automotive.eaton.com/prod...argers/M45.asp

Look at the temps that just 10 psi puts out at 14000 RPM. With the pulleys you want to run you will be well above that rev number and boost number. Are you trying to fry your car or something?

Has anyone tried to put a larger blower or Eaton's newer model in the car yet??

http://www.capa.com.au/eaton_mp45_4th.htm

 

Are you sure that the M45 is what our cars are equiped with? If this the correct model I will be contacting them to see what they think.

 

Yes

 

oh, and save yourself the hassle. Randy Webb has done that already and the engineer from Eaton he talked to said that 19% was too much for the blower.

 

Now what does he mean it's too much? Is this from an effeciency stand point or catastrophic failure?

 

Bluminime,

I didn't take your reply as a flame. It was late and I was probably thinking about diesel, and partly wrong about the octane thing anyway. Should have kept the response to "116 octane won't help much" - more fuel might... With regard to pinging and detonation, can't wait for direct injection motors!

Spillman,

With all due respect to your goals, and, your individuality; common sense says be a tad conservative unless you really want to push the limits and watch things break. I should have stated that my comments are from the perspective of driving my car for 200,000 miles. That said, there have been tests done by folks - Randy Webb, Peter M7 - in an effort to determine the point of deminishing return with regard to pulley/crankpulley size. After a while, heat builds up to a point where power is lost. I completely understand jlm's reasoning; shift sooner. I personally find shifting the power band around a waste of time when an awful lot of power cvan be had right up to redline. jlm, if you're reading, I certainly did not mean to insult you, not ever.

Michael

 

no problemo; i rarely run my car at redline, but may hit it once or twice at the dragstrip. After all, we are only talking about 500 rpm difference.


I was drinking Luddite Languid Duck

 

Efficiency. The blower can only spin so fast ya know Well, until it stops making power.... why dont you guys try a 100% reduction pulley? Just take the damn thing off and stick the belt directly on the shaft

 

Actually, what happens is that the air inside of the sc begins to cavitate. It is just spinning creating heat w/o pusing more air into the engine.

 

thus the, "well until it stops making power" part of that comment

 

How about just replacing the bonnet with an 4ft by 4ft intercooler!

 

Well if there has been test then show me the data.

I know for sure (having seen comparison dyno charts) that the 19% makes a few more horses on top. However it makes more below redline. If a 23% was to only make the same amount of power on top but make a heck of a lot more getting there. I believe this would translate into a faster time slip at the drag strip. And also would be one heck of a torque monster on the street.

 

I was agreeing with you

Spillman: While it might make some more torque on the low end, it would probably burn itself out on the high end. And we dont need specific charts or graphs to figure this out. Its physics. A sc can only spin so fast before it completley burns itself up.

 

A torque monster - yes. An incredible daily driver - yes. Remember at the drag strip, lower RPMs only matter in first gear. Most of the 1/4 mile is done at 5500 RPMs+. You'd better have larger injectors and an ECU for that powerband. Besides the MINI already has more power with even a 19% from a standstill than traction (w/o LSD).

 

I haven't had a problem with putting the power to the ground. Just have to launch at a lower rpm then with the stock pulley.

However I was at the drag strip today and it had rained a good bit. The track organizers were having us just cruise down the strip to dry it off. I got on it once and burned them off through sixth gear.... Was a little scary

 

Quote:

Originally Posted by jlm

no problemo; i rarely run my car at redline, but may hit it once or twice at the dragstrip. After all, we are only talking about 500 rpm difference.

- Okay, I'll bite. What's that??? Apple martinis man!!!

The redline thing; I'm so use to driving 8,000-9,000 rpm Honda/Acura stuff that I forget how leisurely I can make power with the Mini - a wonderful change.

Michael

 

The 19% WILL make more power, until the extra heat catches up with it...at which point it will not make 'that' power until things cool down. And as Greatgro offered, larger injectors and some ECU work are beneficial...perhaps necessary.

 

Seeing as this will be used on a drag strip and not road racing it will probably be OK. I know that just a 19% pulley used on a road race course with a long stragiht away will blow a head gasket.

This was documented already on a previous thread.

I say enjoy it while it lasts. You always wanted to see what was inside the engine anyway. Soon you will have an excuse to get inside and do some head work, maybe a little porting and polishing, bigger valves, get it onto a flow bench........ the possibilities are endless.

 

I havnt seen any proof that the 19% blows head gaskets!!!! I think I seen one post somewhere about a head gasket but was it ever directly attributed to the pulley???? Did I miss something????? Or was it just the 15% boys slinging mud?

 

Exactly what I mean there is so much of this "mud slinging" from one group to another. Oh well I guess there isn't anything we can do about it.

I also remeber the grassroots MINI blowing a head gasket. I think they were using the 19%. However I dont think they were using bigger injectors and they were using the stock intercooler also. I believe that more fuel and better cooling with the 19% could avoid this.

 

I've read in Grassroots Motorsports Magazine that they blew a headgasket using the 19% pulley. Here's a cached version from Google.

http://66.102.7.104/search?q=cache:A...i+cooper&hl=en

 

See the entry from "meanboy" he found what I could not remember the source of. This is it. Sounds valid, although not scientific. Certainly not the 15% boys slinging mud.

 

This is not mud slinging but it should not be said that the 19% will blow your head gasket. Which is what grassroots said. They were not using uprated injectors and were running lean in the upper rpms. This would raise cylinder temps causing the head gasket to fail.

 

Would it be safe to assume that don't drive the same way as the GRM guys did since you don't have the larger injectors?

I wonder how what kind of pulley and injectors team Nuzzo uses. Anyone know?

 

nuzzo runs a stock pulley, so I've been told.

if the head seriously overheats (from any problem), that can lead to permanent warpage and your head gasket will leak.

the extra boost that SPI has run (26psi) and others, indicates that the gasket can handle extra cylinder pressure.

On my mill project, I am replacing the head bolts with ARP to ensure it will be tight.