Quote:
Originally Posted by ZLRob
The X- port is meant for the folks running huge HP builds of 1000+ HP. The Jokerz ported blowers are designed to work with builds up to around 900 HP and it's not recommended to take it much higher than that according to Brett himself. The difference between the two blower port jobs are very different on the power curves and it's notable on dyno graphs as well. One excels in working for the street and the other excels in making big power up high in the RPM range. Two different methodologies for two very different uses.
There is a huge misconception about boost and I wish there was more education put out regarding it. Folks chasing higher boost numbers will be ultimately disappointed when they are not making the power that is supposed to come with it because PD blowers have a narrower window of efficiency than a turbo or a centrifugal blower does. If you are spinning these blowers too hard, they heat soak due to not being within their efficiency window and you wind up actually losing power instead of making more of it. The X factor here comes into play if you are using meth injection. Then everything I just said goes out the window, but that presents a whole different set of potential challenges, complications, and even dangers.
That, plus the faster you spin the blowers the more you tax the drive bearings which realistically only have a maximum rating of 20,000 RPM, so meth injected or not, you'd just have to sit there and replace them very quickly because of that. A lot of us including myself are over that but I also want to stay relatively close to the max still. If I remember right, I'm spinning mine in the high 22K or the low 23K RPM. For others, well, you know, godspeed on that.. Lol.
That was solid advice regarding the upper. If you want more boost but want to lessen the chance of slippage it's better to run a larger lower but there is also a limit on how large we can go with the OE setup too.
|
I agree and I understand boost. I was stating an apples to apples comparison. Reason I went the X-port after the jokerz port is because I needed new bearings. The shop I use does deal with jokerz anymore so I went with the X-port. The car went from 858rwhp to 936rwhp, and now 60-130 4.86 in June Kansas City heat. X-port made the car faster. Same tuner same dyno.