I'm wondering how long you can spin a 2.4 KB or the new 2.3 Whipple at 25 psi of boost or more without a problem.

When I say how long, I mean per run. 15 seconds, 30 secons, 1 minute, 2 minutes, 5 minutes, more?

This is an important issue to me.

In particular, I need to be able to reliabily go for a 2 minute full throttle run without hurting the blower. If I have to reduce boost to do so, so be it. The question then becomes one of just how much boost can I run and still be reliable?

All serious opinions welcome.

Seriously... I wouldn't worry so much about the blower but the shortblock wont live to tell about it.

 

Seriously... I wouldn't worry so much about the blower but the shortblock wont live to tell about it.

I was thinking the same thing..

 

Seriously... I wouldn't worry so much about the blower but the shortblock wont live to tell about it.

lol!

 

I was thinking the same thing..

fedex

 

fedex

Hey just because it's 4/20(National Pot Smoking Day) doesn't mean you should burn one and then start posting up on Mod Fords. lol

 

Hey just because it's 4/20(National Pot Smoking Day) doesn't mean you should burn one and then start posting up on Mod Fords. lol

What is that smoke looking stuff in your car obscuring the FedEx truck in the background. POT SMOKE? LOL :beerchug:

 

I have a custom built short shortblock designed specifically for this application. My current concern is the blower.

A serious reply anyone?

 

Honestly, the only responses I would truly trust would have to come from the manufacturer or try to contact John Maffucci (Bonnevile Salt Cobra - 203MPH) he uses a whipple and probably has some great insight into extended high boost runs. You might also contact MVperformance as they are the ones who set his car up.

www.jmaffucci.com

www.mvperformance.com

Hopefully they can help you out.

Aaron

 

It'll work fine. They run Whipples under boost for hours in boat racing.

However, the faster you spin it the faster it wears out. That's why they make bigger displacement blowers. You can move the same air at lower blower RPMs.

 

I Drove Mine On A 320mile Roundtrip W/ Some Serious Running While On The Cruise. No Problems At All. 27psi

 

:rockon:

I Drove Mine On A 320mile Roundtrip W/ Some Serious Running While On The Cruise. No Problems At All. 27psi

 

A friend of mine told me that he saw the Strictly boys at the track a couple times and that they claim they break Kenne Bells frequently because of how hard they spin them. AS to what blower rpm they spin them I don't know my guess would be 22,000. We're also talking about guys trying to squeeze every single last horsepower out of their setups.

I know that The old whipples and Kenne Bells are very reliable even if you spin them up to 20,000 rpms. That is 4000 rpms over what the maximum recommended rpm is.

As far as my opinion, the new Whipples are still questionable based upon the new rotor design and production. Manufacturing rotors is a very precise job that has to be done extremely accurately every single time and the Quality control has to be the same to prevent failure. I don't know any personally spinning the new whipples very hard. Time will tell.

 

describe very hard???


I have a new whipple going on soon..... A stock upper and 4# lower for the street which is about 17psi, then a smaller upper I forget what size but was told it'll equal 23psi.....

what do you guys consider over spinning the new whipple? Is 16,000 rpm the blowers advertised max rpm? Where would I be at running 17\23psi ??

 

Want to figure out speeds? Easy. Take the lower pulley diameter and divide it by the upper pulley diameter, then multiply by the max rpms.

So for my car the blower is spinning at 9"/3.75"*6500RPM=15,600 rpms.

The alternator is spinning at 9"/3.5"*65000RPM=16714 rpms.

 

I think I have a solution:

The new Whipple 3.3L.

That way I don't have to turn the blower as fast to make the level of boost, and thus, hopefully, there will be much less stress on the blower.
Plus, I believe it will take less hp to produce the same level of boost such that I get more rwhp. A double win.

 

describe very hard???

I have a new whipple going on soon..... A stock upper and 4# lower for the street which is about 17psi, then a smaller upper I forget what size but was told it'll equal 23psi.....

what do you guys consider over spinning the new whipple? Is 16,000 rpm the blowers advertised max rpm? Where would I be at running 17\23psi ??

Very hard=19,000-20,500 rpms.

A 4 pound lower and a stock upper is 15,785 at 6500 rpms. I saw 16.5 on my 3.5/2 pound lower old style blower. That was spinning it at 14,800. I would suspect you should see approx 19-20 psi with the new whipple at that blower speed. Depends on your inlet and exhaust.

 

I think I have a solution:

The new Whipple 3.3L.

Find someone to make a lower manifold and modified intercooler and you'll be a rich person. You'll have about 500 sold the first week.

 

Find someone to make a lower manifold and modified intercooler and you'll be a rich person. You'll have about 500 sold the first week.

Why should it be such a problem? People do sheet metal manifolds all the time. Plus the inlet will also have to be modified or fabricated.

 

Why should it be such a problem? People do sheet metal manifolds all the time. Plus the inlet will also have to be modified or fabricated.

You could probably get Tim Hogan to make you a custom manifold for $2500. Then you would have to worry about getting the intercooler to fit and work properly. Not an easy task.

 

You could probably get Tim Hogan to make you a custom manifold for $2500. Then you would have to worry about getting the intercooler to fit and work properly. Not an easy task.

Oh now.... there are a lot more people than Hogan that do sheet metal fabrication.

 

Oh now.... there are a lot more people than Hogan that do sheet metal fabrication.

You can view it any way you want. The bottom line is that as it stands right now its a custom fab job that would require a lot of time and money to make it work.

I feel the 3.3 would also really respond, but it sure would be nice to see Whipple finish the project and mass produce a kit.

 

You can view it any way you want. The bottom line is that as it stands right now its a custom fab job that would require a lot of time and money to make it work.

I feel the 3.3 would also really respond, but it sure would be nice to see Whipple finish the project and mass produce a kit.

No doubt about it being a custom fab job. The 3.3 is about 7/8" wider, 7/8" taller, and 2.5" longer. And the longer portion sticks out toward the rear. This means a custom intake and a custom inlet. The snout is exactly the same.

 

No doubt about it being a custom fab job. The 3.3 is about 7/8" wider, 7/8" taller, and 2.5" longer. And the longer portion sticks out toward the rear. This means a custom intake and a custom inlet. The snout is exactly the same.

the snout has nothing to do with overall length as whipple will sell you a shorter drive.

 

the snout has nothing to do with overall length as whipple will sell you a shorter drive.

Interesting point. I guess the next question is what snout lengths are off the shelf available. Or, is it anymore to buy a custom length snout?

And depending on that info, you can explore if you want to shift the blower forward so that extra 2 1/2 inches are not all at the backside of the motor. I would think this would leave more room for the inlet.

In that my car is somewhere else with the motor out, I can only imagine what fitage issues front to back make the placement optimum. Any suggestoins?

 

Call up Lethal and throw a bunch of money at them. They were susposedly working on a lower intake prototype for the 3.3L Whipple anyways. Or you could try contacting the guy who already has one installed and see who made his intake, then throw a bunch of money at him. It can be done, all it takes is time, aluminum and machine tools.