Holset Turbos

[wheelhop]

Which hx40 compressor wheel? You should easily reach your goal with that turbo (regardless of which hx40 compressor) and your above list. Keep us posted.

I prefer the bolton hx40 over the hx35/40 any day of the week. Considering the spool speed, go a head and get a turbine that better matchs the compressor. It's good to see you stick with the turbine wheel that better matches the compressor wheel. You can get more out of a smaller bolton housing when you better match your wheels. If you were set on not going over 450 whp, I would say stick with the bolton hx35. I don't see a good place between the *bolton* hx35 and *bolton* hx40 for the hx35/40 hybrid. It probably could eak out over 500whp, but you'll need some healthy boost. The hx35 turbine wheel needs a nice size open turbine housing to get the most out of it and get into the potential of an hx40 compressor.

[sleepydsm]

Now, what injectors do I need with E85? I was eyeing up those new FIC Bluemax 1650s... Any suggestions?

[Halon]

I'd get the largest injectors that your tuning program can accurately control. At the same time, I wouldn't over do it and get extremely larger ones then you need for drivability sake. With that setup, you may be able to do fine with their 1450 or 1550's. They have a calculator on their site that is handy.

Congrats on the turbo though. It'll be nice to have someone local running one who we can see results from first hand, rather then hear say from other various forums.

[4g63tcrazy]

1600's should do you fine. I see people with bigger setups still running 1600's on E85.

[Tachyon]

I've had zero problems idling the 1600's (even without my FAIV hooked up) I actually wish I had done 1850's for more headroom. I was hitting 36% IDC on a puny 14b with E85 on my 1600's at 11.5:1 (gas scale) so I have to wonder if you max out the airflow on an Hx40 if anything less than 1600's will suffice.
I didn't catch what pump(s) you're going to run?

[sleepydsm]

Originally Posted by Tachyon

I've had zero problems idling the 1600's (even without my FAIV hooked up) I actually wish I had done 1850's for more headroom. I was hitting 36% IDC on a puny 14b with E85 on my 1600's at 11.5:1 (gas scale) so I have to wonder if you max out the airflow on an Hx40 if anything less than 1600's will suffice.
I didn't catch what pump(s) you're going to run?

I have a single walbro 255 HP. I don't plan on making enough to max out the pump; if so I'll just toss another one in tank.

I most likely will be getting Bluemax 1350's or 1650's.

[asshanson]

Shane (ecoli) was saying that 1350s should be good for at least 500whp on a dyno dynamics, more than enough to max out a single walbro 255. I had 1600s but went back to 1350s and I don't regret it.

[Halon]

500whp using what fuel?

[asshanson]

e85, sorry forgot to include that.

[turbotalon1g]

You should be able to with a HX40