if straight line racing is out of the question, you want a low spooling turbo like an fp green. on E85 you'll hit 450-500 easily.

 

if we can help answer any questions let us know-

we also do a new version ball bearing Full

quicker spool than a normal full- and slightly more peak power- of course that comes with a price tag- as the BB stuff is nearly 2500$

cb

 

My unmodified walbro 255 is running 458 awhp on E85 and stock block/head. The limit was not the fueling. Walbro 255 can probably go up to 480+ depending on boost levels required to make that power.

 

Yes, for your intended purposes you definitely want a BBK-Full.

 

If the OP is gonna auto-x, then a Red, even a BB Red, will be too lethargic, IMO. If I was gonna auto-x but still do some street and closed circuit, I would just do the BB BBK-Full. Even the BB Green would be too lazy for parking lot racing with the stock 2L motor. The BB BBK-Full all the way.

 

For an EVO IX... where. I was just on the site and I didn't see it, is it posted in a different section. Or is it not even on the site yet NEW hotness?

 

for real autox use w/ a secondary max power goal, I would say either FP 71HTA as the cost effective or CBRD BBK Full BB if cost is no object and paying for a little bit of transient response is ok. The BB BBK Full should be close to the 71HTA in terms of response with a bit more top end.

 

alright so after doing a couple hours of research I have realized the a FP Red and the FP Black (journal and ball bearing) will be overkill for the plans I have set forth for my Evo. It seems that the FP 71HTA, FP Green 73HTA, and the FP Green Ball Bearing would be better suited for my desires in regards to FP's line of turbo's. But I still like what I see in regards to the BBK Full ported and the BB BBK Full ported. Ahhhhh....decisions decisions.

 

FP Black, E85, TScompTuned. Thats all you need to reach your goal. he will hit 450whp on pump gas even.

 

The BB design of the full should make up for the transient response no? Also from reading what Michael from FP said the BB turbos don't increase initial spool up, just transient spool.

look here:
https://www.evolutionm.net/forums/ev...ifference.html

 

If you want to do parking lot Auto-X's the only turbos that fit your bill(Spool wise) are FP 71HTA and BBK Full(Both Ball and Journal bearing). I think the only one's that might reach your power goals on a mostly stock engine(with 91 Oct.) would be the two Green models. Hope this helps with your decisions.

 

1. That's what I said. I am familiar with the concept and post.

2. Most of the momentum of the rotating assembly is the turbine wheel and shaft which in the case of the FP 71HTA is the oem evo9 wheel. Any increase in mass will be from the larger compressor wheel which is a small portion of the total rotating mass and being a billet wheel I can only assume a small difference. The BBK full is a larger compressor and turbine wheel.

3. Whether or not a ceramic ball bearing BBK Full will have the same response as an evo 9 based 71HTA or BBK lite is difficult to estimate. I would suggest you go to the source (Chad @ CBRD) and ask if they have any definitive testing results.

To the original poster, you have to make a priority decision in terms of maximum response and your stated power goal. The previous posts regarding power production are mostly assuming e85 so you need to be aware of that.

I wouldn't recommend an 73HTAgreen for autox but if you must make ~500awhp on e85, it is the smallest turbo that will easily get you there. You could always max out a BBK Full (always ported, shouldn't really need to note) with supporting mods and flow work and be close to 450.

 

I'm more focused on Time Attack. Auto-x is only a concern cause its a part of the modified tuner shootout. Time Attack is more where my primary focus is going to be in terms of racing the car. I just wanna have enough power to fly down a straight, but have instant boost and torque response when blasting out of a corner.

And in regards to racing, the drug of choice will definitely be E85. I plan on also getting a map for 91 in case I have to drive it on the street as most gas stations in AZ don't have E85.

 

I've had a JB Red, a JB Black and currently have a JB BBK-Full. For street, autocross and tight tracks, the BBK will be faster. For large tracks, the Red would probably be your best bet, but avoid the JB version for durability reasons. There is a ton more lag with the Red or Black compared to the BBK on the street. Not even in the same ballpark. I've never been in a Green car.

 

The full has made 430whp at only 26psi on our dyno on 93- on a stock block 2 liter-

it is NOT on the website yet- but it is the same price as the BBK-B-

it spools significantly faster than the other turbine/compressor wheel upgrade turbos that are listed-

I have overlays- just very busy at the new shop- and need to get a thread posted-

cb