I went from the BEGi cast anchor to the ABSURDness.

 

Eh, I was hoping you could qualify THIS vis running a 2560r on tubular:

I hit target, which in the last pull was ~12psi, at just less than 3500rpm in fourth gear (1:1), FM log, 2560R, 1.6 stock as ****. Spool killers: mbc taking ref just past turbo instead of ebc taking ref after ic, tables with SHITTY tune in boost building cells, 2.5" corksport exhaust with a ~1.5" baffle at the end. I will have one more opportunity this year to do spoolz, this time without the baffle, before and god willing I put in "the motor." I expect to get a couple hundred rpm by removing the baffle.

If I could gain even 500rpm of spool with the tubular alone, 1. I'd be surprised, pleasantly, and 2. I'd lick the hot pipes right in the dyno room. I expect my **** to be off the hook, spool-wise, anyway with the new build up, but 1000 just from the tubey would be well beyond expectation.

Werd?

 

Can you post a pic of where your ebc ref is connected?

 

I got a chinacharger T3/T4 .50/.63 on a 1.8 dohc.

So far so good, know many friends running similar egay setups.

 

Sorry, I wasn't clear. It's an mbc setup now. Pic posted, mbc is 4 inches from the fitting on the compressor housing, bottom right. FM style.

has multiple posts recommending taking boost controller ref past ic for better spool. It will be this way when I complete my build, then ebc later next year.

 

Speaking of taking MBC reference after the IC. I've read on here that location can actually damage the wastegate actuator due to the quick transient pressure changes. But if this isn't true, then that should net much more consistent boost control.

 

Bryce >> after IC, before throttle body.

 

Maybe you are referring to the convo about having the bc in the plenum, vacuum there causing diaphragm damage?

 

I'm buying a turbo tomorrow. There is now a Drift 2871 Which one do I choose? I need to decide by 11 am tomorrow 2-4-10

Alright people. Last time before I buy......

This:

TITLE
TB28 Turbo Charger
APPLICATION
Universal, Fits all cars and trucks, Modification maybe required
DESCRIPTION
Designed for quick spool application
Perfect Upgrade for GT25 Silvia S13 SR20det Turbocharger with difference downpipe flange
2.5" Inlet Diameter
Journal Bearing - Wet Float Type
Internal wastegate set at Approx 10 Psi
t25 Flange
Oil Lub, Oil/Water Cool
Ideal for smaller displacement engines making up to 350hp
Compressor Wheel
0.60 A/R Cold Side
Ind: 42.50 mm
Exd: 60 mm
Trim: 50
Turbiner Wheel
.49 A/R
Garrett 4 Bolt T25 Flange
Ind: 52.90 mm
Exd: 45.47 mm
Turbo Comes With Its Own Serial Numbe, WELL BALANCED.

OR

TITLE
GT28 Turbo Charger (The blue hose and fitting are not includes)
APPLICATION
Universal, Fits all cars and trucks, Modification maybe required
DESCRIPTION
Perfect Upgrade for GT25/GT28
3" Inlet Diameter
Journal Bearing - Wet Float Type
Internal wastegate set at Max 25 Psi
t25 Flange
Oil Lub, Oil/Water Cool
Ideal for smaller displacement engines making up to 420hp
Compressor Wheel
0.60 A/R Cold Side
Ind: 54.00 mm
Exd: 70 mm
Trim: 60
Turbiner Wheel
.64 A/R
Garrett 4 Bolt T25 Flange
Ind: 52.90 mm
Exd: 45.47 mm

With Installation Kit as shown in Pictures
Turbo Comes With Its Own Serial Numbe, WELL BALANCED.

I promise I won't ask this again

 

yep, think about it. There's more boost pre-IC than post. When your use the compressor outlet as a boost source for the MBC, that extra boost will open the wastegate faster, if you source it post-IC it takes that much longer for it to start to crack open.

 

Do you want a 2560 or 2570?

 

Do you want a "2560" or "2570"? The first will be good for 275-300rwhp, the second closer to 400.

 

The first one is the one that levnubin has and he said it specs to a 2871. I think I am going to get the second one.

 

yeah i remember, they spec it as a 60mm wheel but he got a 71mm wheel. with the motor you're building you can get away with a "2871" easy.

 

Great, then I will get their "2870" and I'll see what I end up getting. The excited anticipation has begun.