12valve

Hi does anybody, what the difference is between these two big rig turbos are?
BHT3B and the BHT3E.

I found some used ones, and found more of the BHT3E.... can it be used in compounds?
I know that the mayority uses the BHT3B for the twins setup.
**

another question. if a turbo is oily, in the back housing, does that mean its bad? its even oily in the mouth (where the manifold bolts on) could it have been coming out of the engine? or is it a bad turbo?

G1625S

I think the 'E' is a bit smaller. I also 'think' member Swank is running one as a big charger on his first gen, but if I remember correctly, he was looking to go bigger. On the oily turbo topic, I would personally consider it a builder if it has oil residue inside the exhaust housing. It'd be cheap insurance to re-seal it before you spend all that time fabbing up brackets etc, only to find you have a twin turbo runaway

Edit: found his comment...

12valve

we have the brackets and everything done for twins, that same thing happened to us, we bought an used turbo, that passed oil through, so we need to replace that with a good 1 now

thanx.

12valve

does anybody else have an idea?

JDGnut

Its only smaller by less than 2mm on the exhaust wheel.. and has different size housings available than the B.. I also think the way the housing are held on is different.. (its been a few months.. ) The E is same as an HT60....
Bryan

12valve

ok i found an HT-60 as well, but he told me its a whole lot bigger then the ht3b.
does anybody know the diference in performance?

JDGnut

From an old TDR post...
"Turbo______CFM______Racing HP____Daily HP
HX35______600________420_________330
HX40______800________560_________440
T66_______800________560 _________440
B1________900________630_________495
H2E_______1000_______700_________550
HX50______1000_______700_________550
HX55______1050_______735_________578
HT3B______1100_______770_________605
T76_______1350_______945 _________743
HT60______1400_______980_________770
B2________1500_______1050________825
HX60______1550_______1085________853
T88_____1450-1750__1015-1225____798-963
HT4B______1800_______1260________990
Big Brother_1900_______1330________1045
T91_______2000_______1400________1100
HC5A/HX82_2450_______1715________1348
T100______2600_______1820________1430
T105______2900_______2030________1595


The super HX40 is 850 and the Pro 52 is 1200."

I don't know how exact this info is.. but its been floating around..

swank

ya, the only reason i think i'll be outgrowing that turbo is because real soon i should have access to enough fuel for 600+ hp. right now, at the 4-450 hp level, i push 60 psi real easy, and the drive pressure is way up. my 3E has a really small exhaust housing though, i might just try moving up a couple sizes on both turbos. i think an external gate would do me wonders as well.

JDGnut

Swank.. are you running the 23 housing??? they make a 27... I was thinking it was about $150.. (that was about 6-8 months ago... ) from HTT... (don't quote me on that price..)

swank

there, i quoted ya. i think i'm running a 22 housing. a 27 would prolly be pretty bad** with a 14 on top. and an external gate. it'll all have to wait a while though. maybe this winter if i go to school.

12valve

hey, whats drive pressure everybody talks about?

wannadiesel

Drive pressure is the pressure inside the exhaust manifold.

Willy91

I think the HT3B should be OK, PDR uses them in there two smaller sets of twins kits.

bangin6

Good info....TTT

Big Blue24

HTT told me that the only difference between HT3B and BHT3B was that the BHT3B had a divided throat on the exhaust housing entrance and the HT3B has an open throat= more ideal for second turbo. I asked about the "B" meaning broader map width due to extra vents on the compressor inlet and HTT said NO!

Take it for what it's worth, HTT does sell HT3B's so I hope they are familiar with them.