PSI or Whipple?
 

What would you use PSI blowers or the Large whipples and why?

I would use the Whipple 8.3's. They have a lower profile and are more efficient. I also believe they are priced better as well.

I believe that the Whipple is more plug and play.. ie tried and tested.

The PSI would have to be a more custom installation.

Chris

All in what you want to build, in my boat a whipple like cb said plug and play . On my drag car psi a lot more boost for a lot shorter time.

I like the looks of the PSI, Sorta like a small block sitting on top of a big block.

PSI's are my choice. I have had a pair for 10 years and love their look and performance. They look like a small block bolted on a big block. My $.02.

Exactly what he said, only he beat me to it.

PSI = lots of psi!

I currently have PSI's. They take alot of HP to work. Does The whipple use as much HP to make the same boost?

But I stole the quote from you...

Dig the look of them PSIs but were waiting on the new Whipples .

Whipple all the way. 5 liters !!!!!!

Definatly PSI, they are proven. Whipple still is working on thier Research and Design, a couple of the kinks to work out.

i disagree,the psi or the whipple take way less power to operate,than a roots blower.less parasitic loss equils more crankshaft power.the best roots blower eats up way more power than a psi 206d,and generates a lot more heat in the intake charge.

Ok, say you go with the Whipples. Next question, carbs on top or throttle body and fuel injection?

Either one works good, we ran Whipple R980 and A980 on my drag car, now PSI. and got a couple boats with R980's. Dont have to turn the whipple as hard, if you are talking about the old ones. The PSI is about 30 lbs lighter and looks better.
I like carbs because I can fix those and dont have to mess with calibrations.

It's all good as long as you;

"Run some boost through them biatches"

This was the first opinion I read on this board and is still the best, funniest and most expensive one I have gotten!

On common marine engines, below 1600hp, they will take close to the same power, but have cooler temps. Ours makes far more low end torque and has significantly better fuel/air distribution and idle characteristics. You can't idle a 7.5L PSI gas version down to 800rpm. Not that many want too, but we have plenty that do.

Ya, thats really, really not true. We had to open up some clearance for applications that don't run the fuel through the SC so now we have "dry" and "wet" clearances. We also have "race" and "pleasure".

Rear entry EFI is by far the best. Rotors are sealed 360deg with no leak path.

PSI's housing design is horrible, the inlet is 100% wrong for performance, which is why everyone in the drag world modifies them. Rotors need to be sealed as they move air through the housing. Compression is increasing as the air moves axially through the housing, therefore you lose compression and airflow as the rotor goes by the open portion of the housing.

[QUOTE=scoop123;3020009[B]]I currently have PSI's[/B]. They take alot of HP to work..

you made the right choice and dont change a thing :drink::drink::drink:

How much boost are we talking?

pic

Looks like Mike Bobbits [Risky Business] engines.

check into the support you get with both companys!!!!!!!!!!!!!!!! after the sale makes a difference

PSI all the way. Bob

Whipples
 

I love the low/profile look of the whipples, and they fit nicely under the hatches......PSI blowers are too big, and heavy looking for me... WHIPPLE for me..!!!:drink:

Is there really a comparison? Here's the 10.5 and 12.0 liter SC. Light years ahead of anything out there.

http://i62.photobucket.com/albums/h9...ple12liter.jpg

Do u make the 10.5/12.0 ?? If not when ?? Looks good like the old 930 ? Almost.

Working on it now, debuiting at PRI Show. Older SC was a 9.8 or 980. Very different animal here.....

In the pic it looks like the rotors "screws" are cone shaped?? It would be one way to compress the air.

you've been saying this for over 3 years :party-smiley-004: the PSI is avail and PROVEN by Ch!ps kick azz speeds .no belts coming off or bearing & snout problems :evilb:

I also agree with fountain42. I have not had any experience with the Whipples but I did run a pair of PSI's for over 10 years on my 38 Cigarette with absolutely no trouble. No bearing failure nor throwing any belts, just outstanding performance and reliability.

same here...496/whipple,and very satisfied

yah 2 yrs in a row Dan didn't finish the borden light pokerrun with his 40 skater running sterlings1350/1550 whipples cause of the pulley shaft or pulley:(:( I caught this second hand but was there there to see it towed in twice. I need to drop off pics to him and fined out. I think he had computer issues up at loto too which would suck real bad since its a 30 to 35 hour tow.I like the old school psi and am happy with my 1071 and dyno #s . Dean Gellner builds nice stuff and he is the one working on your junk, not someone who has a bunch of guys building under his name and your paying big funds for there name.

3 years? Lets not exagerate quite so much. Its been about a year now and something this big and with all the new technology it features, takes some time to develop. As for belt issues, 99% of them are from incorrect setups. You ever see how many belt issues customers with PSI's have when they try to make power? Almost all had to go to kevlar belts. Ask any drag racer how belts live with there PSI's.

Actually not true, especially since I was there. They had a pulley issue, as they had bolts 1-2mm too long. That was fixed, they had other issues. When they had drive issues before, they were not our drives, they were built by someone else and they were a mess. Any part can have a problem when its not installed properly or not used properly, but when its used as designed and intended, failures are rare.

PSI's rotors are an old, out of patent design that cannot maintain the efficency or flow levels of the later profile shapes, thats not fiction, thats fact. Many later technologies have come out in the last 50 years since those rotors were designed. Time will tell whats superior.

hows is wipples customer service after the sale??????????????

Whipple. Most efficient blower out there

Art, not true as I was there as well.