[Back@itagain]

Anyone have any idea how to identify which generation of rotors are in the blower based on serial number? I read somewhere that serial numbers starting with W3A are Gen I. Is there is huge difference between Gen I and Gen II?

[sqidd]

Originally Posted by Back@itagain

Anyone have any idea how to identify which generation of rotors are in the blower based on serial number? I read somewhere that serial numbers starting with W3A are Gen I. Is there is huge difference between Gen I and Gen II?

Yeah, the gen I stuff is crap. Who sold you that?

[MaverickMLFD371]

Originally Posted by sqidd

Yeah, the gen I stuff is crap. Who sold you that?

i have a gen I

[Back@itagain]

Originally Posted by MaverickMLFD371

i have a gen I

Don't meltdown yet! Gen I is a very good system. There is a little more back ground to the question and Sqidd knows what the concern is. He is just getting his digs in while he can. I spent the weekend working on the overall cooling capacity of my entire system (another thread another time). Some questions came up regarding Gen I and Gen II rotors. I am working towards increasing the boost levels and things like rotor profiles, efficiency and intake charge temps become even more critical when trying to do it without the addition of a meth kit. I was hoping some members on the forum might have been able to quickly and accurately answer the thread.

Now I'm just waiting to get in contact with Whipple to confirm/deny my suspicions. Whipple's response will dictate what direction I take regarding the vendor/installer.

[Back@itagain]

Ok....I just got off the phone with Whipple and they confirmed my suspicions. Gen I rotor profile serial numbers do start with W3A. Their is no huge differences between the two units. The only real difference is in the rotor profile. According to what Whipple told me, Gen II rotors will carry about an additional pound of boost through out the rpm range with all things being equal. This said, I am currently on hold with Livernois to deal with my next issue.

[tw0scoops123]

So what happened? Did they sell you a Gen1 and say it was Gen2 or something?

[Back@itagain]

Originally Posted by tw0scoops123

So what happened? Did they sell you a Gen1 and say it was Gen2 or something?

Close...I purchased my Whipple from Livernois on March 27, 2009 which is close to 13 months after the Gen II release. Livernois gave me a Gen I at the time of purchase. I even questioned the sales guy (Andy Ricketts) regarding Gen I and Gen II rotors in the unit I had purchased. At the time I never received a difinative answer and he actually tapped danced around it telling me that they had only purchased that blower a couple months before I bought it.

I called out to some independent sources to try and get a little more information regarding the differences. My understanding is that Gen I rotors where produced by Lysholm. Lysholm and Whipple had a contract dispute and Whipple now manufactures their own rotors thus the Gen II. From the sounds of things, and this is just an opinion that I have formed after a few conversations with individuals within the industry, Whipple had to change certain configurations of the design to avoid legal ramificaitons with Lysholm. New bearings and some other modifications mixed with some marketing and you get Gen II. I'm still not happy with Livernois selling Gen I units at full price when Gen II had been on the market for this long. Andy Ricketts at their shop said they made a bulk purchase when the Whipple design first came out and thats what happened to make it on my car. This sounds pretty much like a contradiction to the information he previously provided me regarding thier purchase of the pience. Depending on the resolution of this issue, it will determine if I build my engine at Livernois. Not to detract from Dan Millen but this has been a comedy of errors and poor customer service on the part of Andy...he even lost my driveshaft for a week!

[Back@itagain]

I just wanted to update this thread so that it will be a little more complete for anyone in the future who reads it. I have spent some time working with Dan Millen, the crew at Livernois and doing my own research. From what I have gathered, my suspicions were pretty accurate. Whipple never had an official release of the Gen II rotors and continued to sell their inventory of Gen I even after the Gen II release.

An insider (sorry just don't want to use names) filled me in on a couple of things and you have to read between the lines a little. This person had a conversation with someone very high up on the food chain at Whipple. The insider asked Whipple what the story was with the new rotors. Whipple stated their official company line is that the new rotor makes more boost period. Well of course it does when it is running a 3.25" pulley instead of the 3.375". Whipple decided to use the smaller pulley when FRPP told Whipple what horsepower numbers FRPP wanted to achieve when the two enterd into their business agreement. The only real difference made during the Gen II "release" was the new blower for the 5.4 which I think the rotors are something like 15 mm longer. The Whipple representative was answering questions in a manner that lead the insider to believe the he or she was simply toating the company line.

Now Lysholm is making rotors for Vortech who just recently got in the business of making twin screws. At the end of the day, the Gen I products are still great blowers that make plenty of power. I still think things could have been handled differently but IMO Livernois has made some positive changes and things are definitely looking better