which is the best turbocharger for hillclimb races?
i need about 550whp spool fast and lots of torque.

 

Bbk?

 

Sounds like a FP Red and ethanol

 

stroker,red,big boost

 

Just exactly how fast do you need it to spool? Transient response is paramount as well, I'd imagine. Will this be on a 2-Litre, or an increased displacement motor? What will peak boost be?

 

BBK + race gas.

 

I don't think there are any 550HP BBK reports.

FP Red will do that, though.

 

I've got a few guys running around with 500 both stroked and 2.0s with bbk fulls. In fact I've switched soley to bbks (both the lite and full) now over the FP turbos. The bbks are outstanding turbos.

 

If he wants 550 at the wheels, then neither the FP White, FP Green, or the CBRD Lite, would get him there.

Can the CBRD BBK-Full produce the peak power numbers that he needs? On a 2-Liter, I doubt it! On a stroker it might be doable. What do you think? On the other hand, a BBK Full will spoolup quickly for him and it is a proven torque producer as well.

The jury is still out on the new TOMEI ARMS turbo. It appears to be comparable to a BBK-Full powerwise, but there hasn't been enough testing done on it yet, has there?

The FP Red would probably get him there powerwise on racegas, wouldn't it? I see where a few guys like the Red for road courses, especially on stroker motors. But the constant shifting and extremely short straightaways of the Hillclimb courses may require a faster rate of spool than the Red configured with a 10.5 turbine housing can provide.

I'd like a Red with a 9.8 housing and a B.B. center section on the 2-Litre engine. Or, if it is to be a 2.2 Liter motor, then a B.B. Red/10.5.

 

defantly stroker ... and red probably with e85 makes great power

 

For the serious, dedicated hill-climb car, 2.3 or 2.4 and an hta3582 or hta3586 turbo, race gas, etc. How much elevation are we talking here?

For a much more simple and way more cost effective build, a BBK on stock motor with race gas would be my setup of choice. Not near the power of the above setup, but would def get the job done and be a blast on both street and up the hill

 

You should be more concerned about the torque curve rather than peak hp.

 

2.3 liter and a fp red

 

Which of these turbos is going to be most available in your country? And what type of fuel? Whenever I see people asking for recomendations, first I look at is where they are at. People give blanket statements, even sometimes AFTER people say they're in a place that can't get XXX part/gas. Also figure in rally type cars probably need to have a few turbos on hand, or something they can get fixed quickly. Gotta be reliable for constant beatings as well.

Hopefully DaveK will catch this post and chime in, he is a hill climber and can provide some first hand experience on the matter

 

Also like mentioned above, FORGET peak whp #'s, they mean nothing to a rally car. You need great transient response/recovery and a broad usable torque curve.