Forced Induction Superchargers | Turbochargers | Intercoolers

Crossover / hot side sizing

Thread Tools
 
Search this Thread
 
Old Jul 21, 2010 | 09:57 PM
  #1  
Ping King's Avatar
Thread Starter
TECH Fanatic
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (20)
 
Joined: Feb 2003
Posts: 1,636
Likes: 9
From: PA
Default Crossover / hot side sizing

Hey Gang,

I am trying to plan my setup. This is what I have so far:

Precision 67mm turbo
2 stainless 98 passenger manifolds
3" downpipe
2 deltagates.

I am contemplating what size i should make the crossover.

do you think 2 inch pipe would be ok?

Max power is 550 rwhp. No more. There would be a wastegate directly off of each manifold, then 2 inch to the turbo. I am looking for a setup with instant response and spool.

Opinions?
Reply
Old Jul 21, 2010 | 10:02 PM
  #2  
trans2000am's Avatar
TECH Fanatic
iTrader: (49)
 
Joined: Feb 2006
Posts: 1,518
Likes: 0
From: detroit
Default

2.5 is good, turbo is a little small for the ls base motors your gonna run out of steam real quick
Reply
Old Jul 21, 2010 | 10:06 PM
  #3  
Ping King's Avatar
Thread Starter
TECH Fanatic
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (20)
 
Joined: Feb 2003
Posts: 1,636
Likes: 9
From: PA
Default

i know ill be limited to 9-10 psi. So i am building this setup with that in mind.
Reply
Old Jul 21, 2010 | 11:32 PM
  #4  
BottleFedZ346's Avatar
TECH Resident
iTrader: (17)
 
Joined: Sep 2009
Posts: 791
Likes: 0
From: Orlando Fl.
Default

Im runing a 2.5 mild steel setup.....
Reply
Old Jul 21, 2010 | 11:48 PM
  #5  
1972nova's Avatar
Launching!
iTrader: (13)
 
Joined: Jun 2010
Posts: 268
Likes: 0
Default

im going 2.5 on my 5.3 t70 setup
Reply
Old Jul 22, 2010 | 10:54 PM
  #6  
BottleFedZ346's Avatar
TECH Resident
iTrader: (17)
 
Joined: Sep 2009
Posts: 791
Likes: 0
From: Orlando Fl.
Default

From what i have seen 2.5 is most common and wouldnt think you would need much bigger then 3.....
Reply
Old Jul 23, 2010 | 03:25 AM
  #7  
DMH Fabrication's Avatar
FormerVendor
iTrader: (126)
 
Joined: Dec 2004
Posts: 1,399
Likes: 0
From: Richmond, VA
Default

If you never plan on going bigger later, I think you could get away with a 2.250" crossover. I feel 2" is a little too small though.
Reply




All times are GMT -5. The time now is 12:07 PM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-5
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-6
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-7
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-8
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-9
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE