Welcome, Guest. Please login or register.
July 27, 2017, 12:37:08 am

Login with username, password and session length
Team Z Motorsports
Tech Section
* SBFTECH Membership Required *
433803 Posts in 37115 Topics by 9458 Members
Latest Member: Rich351
Search: Advanced search
Advertiser Inquiries
+ SBFTECH.com Experienced Small Block Ford Tech
|-+ General Tech
| |-+ Forced Induction
| | |-+ Boost - 2-step - trans brake
0 Members and 1 Guest are viewing this topic. « previous next »
Pages: [1] Go Down Print
Author Topic: Boost - 2-step - trans brake  (Read 2640 times)
vsixer
Small Block
***
Offline Offline

Posts: 168

Location: South, TX

« on: March 20, 2017, 11:43:22 am »

So I need some ideas.

This is my blow thru coupe. 78/ 76 billet wheel journal bearing turbo. C4 trans, 3.27 gear, MT Pro Drag radial, MSD dizzy, Digital 6 plus, BTM pulling 1 degree per 1 lbs. after 5 lbs., timing set at 34 degrees. Running 16 lbs. of boost total.

On the 2 step set at 3500 my car will only make about 1 psi no matter how long I set on the 2 step and the trans brake.

I know it sound like a stupid question since I can turn up the 2 step to 4k, but I am running a drag radial and don't want to blow the tires due to the high launch RPM, or do I just turn the 2 step off and run against the trans brake to build boost which will be a higher RPM (don't actually know the trans brake stall against the new converter (Pro Torque) cause I have to turn off the 2 step.

This is a toy not a full drag car, So I only go to the track a few times a year.
Logged

85 Coupe
juiced coupe
Six figures worth of don't give a f*ck
Global Moderator
Big Block
*****
Offline Offline

Posts: 8146


Location: Pascagoula, MS
The land mass between New Orleans and Mobile


« Reply #1 on: March 20, 2017, 12:50:55 pm »

I believe that there are a couple ways to go about it.

Raise the launch rpm to where the engine wil be loaded by the converter. The load should cause it to build boost.

Or

Setup the timing retard to pull extra timing while on the two step. This will cause unburned fuel to dump into the exhaust, and then ignite. In addition to building boost, this also makes a evil banging sound.
Logged

Doing more with less, or something like that.
http://sbftech.com/index.php/topic,20009.0.html

Quote from: Monte Smith
Bottom line, if it was the hot ticket, the fast guys would do it.............they don't

You might need some Titanium rods and a flow bench!  LMAO on floor

I honestly don't get it.

I'm sweating, my heart is racing, my clutch foot is twichin', and my right arm punched the computer screen doing an involentary 2-3 shift while reading all that. 
Pages: [1] Go Up Print 
« previous next »
Jump to:  



Powered by MySQL Powered by PHP Valid XHTML 1.0! Valid CSS!
Powered by SMF 1.1.21 | SMF © 2015, Simple Machines



408 Stroker