I believe that is in the same range as a k31. Just a little smaller than an s400 and ht3b.

 

Have you towed with your new setup?i read on here that kantdrive55 towed to sema i think with the 700 setup,but said they had done some mods to the twins.What mods would be needed to tow?

 

So less power with BD towing twins than with a single A3k? Doesn't sound like the solution to me.

 

I have not towed with the set up I have now. I do not anticipate any negative results.

 

I guess not

 

I recently ditched my BD twins and had Nathan build me a set using the Super B as the top turbo with the wastegated GT4202 as the primary. I just put 2,000 miles on them in the past week. They spool ridiculously fast! Due to the weather I still haven't fully unleashed the boost as well as tuned them either. Stay tuned for a thread with installation pictures...

Yeah, 600 HP ! I should post all my graphs of maxing out at ~575 HP with the BD twins, except for a 1x fluke at 596 HP. When I removed the BD twins I took detailed measurements of the Super B and the primary. The primary is tiny so it probably has to spin fast to move air that is also hotter as a result! The tiny primary probably also limits exhaust flow thereby limiting power making potential.

However, for a solid 500 HP with reasonable cooling and no lag whatsover I believe the BD's do really well, are very well matched (always "on boost"), and are a heck of a lot better than a large single for towing. I think they have also been proven on the dragstrip with AK Ram's and the guy from Vancouver Island with the CR Chevy conversion.

 

Umm, if I want to figure out what the heck you guys are talking about with all these MFG types, where the heck can I go?

I'm trying to figure out turbos, I'm a neophyte with them. And, I'm getting frustrated . I have been searching and reading what I can find, but haven't found a turbo basics post - I'm not saying my searching doesn't suck either...

Helllllpppppp.....

 

I'm very interested to know how this set-up is working out.What kind of boost #'s are you seeing?What did you wastegate the primary at?

 

Once I get some more drive and tuning time I'll post a thread so as to not take Omaharam's original thread off-topic. I'm still driving home from Christmas vacation and the road conditions really suck so I have everything turned down to about 425 rwHP as a result. I set the primary wastegate to 30 psi, but still need to fiddle around with the Super B wastegate setting some more.

 

Keep using the search function and also reading ever thread anyone posts about turbos. You'll figure it out. Takes time to become edumucated.....