Hey everyone.

This is just a minor update on my own project along with some goodness from 928Motorsports for everyone.

First regarding my project I just recieved some aluminum tubing in today (sorry I know that everyone wants pics of it but no can do) and my new Amsoil EA intake filter. In case you havn't heard of this air filter, they do offer replacement filters that will go on many of the cold air intakes that are made for our cars such as AEM and K&N. I just found them and liked them so I got one for my Z33art project. Things are coming along quite nicely and should have some big updates in the next month or so hopefully including the whole new front end for my car with the intercooler in.

Here is a picture of the new Amsoil filter compared to the stock K&N filter that come with the K&N intake for the Z (except the Amsoil is 3.5" inlet but they offer it in 3"):


As some of you may know I work part-time for 928 Motorsports of whom is building a supercharged Porsche 928 for the upcoming Pikes Peak Hill climb in July (Open Class). Here are some pictures of the new rollcage made by Furo Racecraft:












Note that the bars which go through the kickpanels actually get connected to the unibody up front making this an 8-point cage. Also this cage is built to SCCA Specifications and Pikes Peak of course!

In other news regarding 928 Motorsports we are releasing our billet supercharger impeller! For specifics please reference their site at http://www.928m.com/parts/powerdyneimpeller.php .

Here are some pictures off of their website:




Overall I would like to thank the following people:
-Jeremy @ Performance Factory for his assistance and support

-Charles @ CJM for his knowledge and assistance in the past

-Carl @ 928M for everything he has taught me and helped me with.

-My girlfriend for powdercoating my parts and being supportive!

 

Are you related to the 928m people? Just wondering.

 

Related as in family no. Friends yes plus I am employed by them. My friendship with them is mainly aquired via employment.

 

Looks great ! So are you not using the Vortech SC ?

 

I am still using the Vortech SC right now and will continue to for now. In the future I may get a powerdyne and put it on if I feel like making a whole new bracket or I may just back a whole new back section of the supercharger that can take the guts of the powerdyne and has the same bolt pattern as the vortech. This of course would require me to get a hold of the powerdyne volute and back plate which is easy enough for me.

 

That air filter looks almost identical to the S&B Power Stack filter I had on my RX7 and plan on putting on my Z, except they use red oil like K&N does.

http://www.sbfilters.com/universal_filters.php

 

Have you thought on a cog belt yet ? Im looking for a stronger 600mil. cog belt thats on the blower it self . I may have gotten a weak or bad one , but mine spun all the teeth off the belt when I did a logged run on the street . It was a Gates Poly-Grip . Gates doesnt make a 600 mil. Poly-Chain belt . SO Im looking for something as strong as the Poly-Chain Any Idea's ?

 

Nice.

 

You may want to try contacting York Industries as they can basically make any belt you want although you may have to by 10 in which case you could just set up a group buy and sell them to other members.

I am not going to be doing a cog setup right now. I can easily switch it over at a later date when I see the necessity to have it. For now I went with what I now will meet my goals day and night without incident and what was easier to do.

My main concern that cause me to not do a cog the first time around was the simple fact that I feel I need to do more research on it in order to find the perfect solution. Instead of holding back my personal project I decided to go with what I know and continue to research cog setup (ie available lengths, teeth profiles and brands) until I feel I have what I need to do it right the first time.

Seeing as how I am a privateer I don't have the money or time to throw away on R&D if it involves buying custom ground cutters and large chunks of metal to only make something wrong.

Thanks for the comments so far!

The amsoil filter is really nice. On the inside there is cone that helps direct airflow into a laminar flow and reduces turbulance cause by flow entering the top of the filter and the sides of the filter. This filter will work nice for me. Since I am basically using a 45 degree coupler at the SC inlet and a small piece of aluminum 3.5" pipe I will be able to get the filter right in the mouth of the bumper for fresh air but will be able to rotate it towards the driver side corner of the bumper for normal driving to prevent rain and crude from getting into it.

 

For those who did not read this thread when I posted it sorry but you will not be able to see the impeller for a while as the pictures as the pictures are not working right now for some reason.

However, for those of you who did see it this may be of some interest to you. Prior to saying what I may be doing I want you guys to understand that by no means is what I am doing going to be a production type thing that is avalible to the public unless I figue out how to do it another way.

Anyways...

The billet impeller is not built for a Vortech V2 such as the one that comes in the Vortech kit and the one that I am using in my Z33art kit. So obviously it does not just drop in place.

Some of the issues include:
-impeller base OD is slighlty larger than that of the V2 headunit
-Inlet of the volute on the Vortech is slightly bigger then the headunit the impeller is built for so it is not clost the the walls on the Vortech volute whichi is bad.

However, the shaft diamter is the same and the volutes themselves are interchangeable between headunits.

With that in mind, I am contemplating making a fixture so that I can put my vortech V2 headunit in a CNC and machine the impeller seat slighlty larger diameter so that this billet impeller fits in the V2 headunit. Then all I have to do it put the volute from the other supercharger on my Vortech and I will have one hell of a supercharger. I think I could outflow the T-trim by quite a bit but I guess I will have to make sure everything else works out first.

 

Have you compared the V2 to a T-trim ? Dont have a V2 anymore to compare but I think they are the same size unit . The impeller is most certainly different and the air intake is different [larger] Other than that , I believe they are the same .

I forgot to add . The T-trim can also be had with a heavy duty gear set

 

^^

Then the case must be different. I think that if the made the intake opening any larger they would start to cross over the point in which your ratio of diameter for taking in air to diameter for compressing and accelerating air would become ineffecient. The only way to really overcome this would be to slighlty increase the diameter of the impeller. Also, I am not sure if this is how all of the V2's are but on mine the blades do not go all the way to the end of the impeller. I almost wonder if the t-trim is just a full impeller.

It would be a good marketing ploy to do something like that and just make one casting for the impeller and machine some of the outer blade off to drop surface foot per minute down and say that the blower is a step below. Even though it would cost them slighlty more (but not much in the grand scheme of things) to do this it would make the upgrade to the t-trim much more appealing and they would be able to charge more in reality for something that actually cost them less then the lower blower. Make a customer want more and offer them more and you have money in your pocket.

Can anyone confirm what the V2 impeller looks like?

 

Also, I don't see a need for heavy duty gear sets. That seems like a bit overkill to me. Maybe I am wrong though. I don't know what the lash is like on the gears to be honest.

I think that I am going to try and use the vortech volute still and and modify it and the casing to fit the billet impeller. This could inlcude maching out the middle part of the volute and making a new center section (since I have the profile for the shape of the impeller there is no guessing and as long as I get it square eveything is perfect)

 

I have asked Vortech on the head units sizes . They claim both are the same . I know both bolted right up to hte bracket and seem not to take up any more room from one to the othre . I know crap about the inside of the units . But I have had both on my car . The T-trim no doubt produces more boost and more boost sooner . And with out much tuning made 70whp on my car .

 

One of the the two T-trims I have , has a heavy duty gear set on it . If a cog pulley system is used . The heavy duty gears , I hear , are a must .

Im off to work for the night

 

I have not doubt that the t-trim fits in the same space as teh V2 in all honesty does have room for improvement. However, from a business perspective, the machining or casting cost of making a better designed impeller may be higher then that of making a larger blower and taking the scientifically easier way out and increasing surface foot by using a larger impeller in a larger volute instead of going through the hassle of using fluid dynamics engineers to improve upon an impeller design within the same space constraints.

 

On a different note the engine is almost finished being built and should be done tomarrow. We just got the block sleeved, all new gaskets, new cams, a new rising rate boost ignition timing retard that I am working on, and the new carbon fiber dash is installed.

 

What cams are you going with ? Interested in your rising rated timing and how you are going to apply it .

 

I should have specified that the built engine and what not was on our 928.

Well the timing retard will be a mechanical solution that I am developing that works similar to the J&S safegaurd. I will have control of at what boost level I start to retard timing and from that psi on I will be able to retard a given number of degrees per pound of boost increase.

 

why are you using a powerdyne blower. I thought they fell off the planet about 10 years ago. They had a littel blower for mustangs that was pretty much useless if you want to go over about 400-450 HP.