Mike Holmen

I put a BTH-3b under a GT3782R. It worked pretty good and the 3b is a cheap turbo for around $600. You can find all the fitting easy and save some $$$. I had an old PDR HX40/3B twins st-up. I just dumped the HX-40 and put in a garrett3782R. Its a easy swap and it was far cheaper than $6k. I have about 15000 miles on the new twin set-up. I paid $1600 for the garrett and got two turbo flanges made at a local machine shop. If you already have the garrett, either a S400 or BTH-3B would make a nice primary for it.

Mopar_Man

Your right that would be the cheaper way to go. But if im going to spend the money on a compound set up I might as well go all the way and have a true BB compound instead of one true BB turbo and have the big turbo be a standrd turbo. But it sounds like you do have a real nice set up.

Mopar_Man

how do you like that GT3782R compared to the HX-40?

Mike Holmen

So far everything is better than the HX-40. It improved the power band in the mid range. The turbine doesn't seem to choke as much as the Hx-40 did. It spools a lot faster than the HX-40. The top end is way stronger and my rear bumper isn't covered with soot any more. The only down side is that its more $$$ than the HX-40 and its harder on tires. I have spool-up that would be comparable to a HX-35 and way more stronger power band. You can pull 50 psi in seconds. I've only barked it a few times. The egt's are down 150 deg's from HX40/3b combo. Yes, the garrett twin set-up is the sweet deal, but at $6k, that tons of $$$. You could build mine for about half that. A garrett stage 3 on a S480 would be a nice street set-up.

Mopar_Man

Ya Im now running a custom Garrett stage 3 the GT3788R that is in my sig.

Mike Holmen

Hippie, you actly running a HO VP?

HOHN

Personally, I think you get a better bang/buck by only going with one BB turbo, and the other be a regular journal bearing.

For example, you could either do a stock charger over a BB primary, or a BB Garrett on top of a cheaper HT3b or S400 charger. Either would perform better than a typical setup, imo.

It's probably cheaper to go BB on top than on bottom, but going BB on bottom probably gives better overall performance.

Mopar_Man

Yes I am. It was not by choice. I had it put in when my IP took a crap when I was towing a big load stuck in the middle of noware. But it seems to be working fine.

Mopar_Man

Well I already have one BB turbo on my truck. But just trying to do all my homework wile I save my money for everything else I will need.

Mike Holmen

Cool, just confirming. One day the samething might happen to me. If you want to save $$$, just go with the common journal bearing turbos i.e. BTH-3B or the S-400 stuff. At the end of the day, how often do you really push the primary. If you just drag racing/sled pulling, that's different, but most of us still drive the old girl for/to work. At $600 a piece, its easy to survive with a cheap primary turbo. Of course the more expensive primary would just spoil ya and put a big smile on your face on those WOT pulls.

nike

Not meaning to hi-jack here... So your saying running a stock hx35 over a BB would be a better daily driver.?. If so, for a moderate street truck, which BB would you put on bottom of an auto?

This ? applies to you to Mike!

Mopar_Man

Thanks it is something for me to think about.