I'm kinda turbo stupid when it comes to 20b's.

What turbo would be good to support around 450rwhp?
I'd like something that will spool quickly and can produce this power around 16-18 PSI or less.
I figure the 20b should be able to spool a pretty large turbo up pretty fast.

Can anyone recomend some turbo's for me to look at?

Also does anyone make single turbo manifolds for 20b's or is this a custom job?

Thanks,
MIke

 

lol
just go buy yourself a tig welder and start practice

 

Actually I have access to one at the shop I work at. I was seriously considering lerning to use it for this project. My boss is great with it. I just need to talk him into instructing me.

Mike

 

Manifolds are all custom for this project. If you've got access, make your own by all means.

Turbo's; we've discussed this topic a bunch of times before. Do a search and learn from our babbling The easy way to find out what turbo to use would be to run the motor in NA mode with your manifold on and ready to go and check with an air flow meter to see what the motor sucks in for CFM at X rpms. Plot it out on the turbonetics, Garret, etc, compressor map web sites and see which turbo will fit that air flow and on the Y-axis, where the boost pressure falls.

Most of the rest of us are just going by calculations and best-guesses to figure it out.

 

Save yourself some time and money. The stock turbos will produce 450hp on their own, and will spool faster than just about anything else that you could think of.

I resemble that remark.

 

Stock turbo's, huh? I like the Simplicity of a single but If the stock turbo's can do this than that may be the way I go.

Turbo 3, Thats the easy way? I'd hate to do it the hard way then.

Thanks,
MIke

 

Evil, forgot about the stock ones...yes, they'll work just fine in parallel up to that amount but not up to 18psi, more like 12-14 at the most but they'll spool up fast like FD's.

Ok ok, that's the easy way to get "accurate" info. We're of course assuming your car is running and you want to see what your air flows are, thus matching up to a production turbo with a stock compression map. See, "easy"

The hard way is to go by some calculations, assumptions, and of course hearsay, and just buy one hoping for the best without ever getting to run the car first. So is that easy or just gambling and thus hard?

 

The single isn't simple at all. First, you need to make a custom manifold, then you need to spend thousands of dollars on a turbocharger and wastegate, then you need to figure out where to plumb the oil and coolant lines, then you need to plumb the intake piping... etc. The only complicated thing about the stock turbos is sequencing them, which has never been done with a standalone EMS as far as I know, so you can just make everything easier by running them parallel.

The RXX-7 (which is currently for sale) dynoed 337bhp@10psi, and 373bhp@12psi with the stock turbo unit.
http://www.cris.com/~Asam/20B.html

The Pettit Banzai is good for 550bhp (I assume that's at the flywheel) with the original turbo unit. I have heard rumors that the turbos were upgraded, but I have been unable to confirm this. Even with upgraded turbos, it would be easier and cheaper than going single. My local turbo builder quoted me $1,200 to rebuild the stock turbos and upgrade the compressors. I should have done it instead of going for the T66.
http://www.pettitracing.com/

 

All bow to the T51R muhAHhahHhahaha


-Ted