turbo cold side piping - 2" outlet upsize to 2.5"or 3" - Pirate4x4.Com : 4x4 and Off-Road Forum
 
Pirate4x4.Com : 4x4 and Off-Road Forum  

Go Back   Pirate4x4.Com : 4x4 and Off-Road Forum > Miscellaneous > General Chit-Chat
Notices

Reply
 
Share LinkBack Thread Tools Display Modes
Old 12-30-2019, 09:49 AM   #1 (permalink)
today
 
fredycruger's Avatar
 
Join Date: Aug 2012
Member # 225557
Location: MA
Posts: 1,501
turbo cold side piping - 2" outlet upsize to 2.5"or 3"

i have new turbo to put on my truck
engine is Nissan straight 6, 4.2L turbodiesel


i was running hx35 but was too big
new turbo have 2" outlet
should i get coupler that goes from 2" to 2.5"/ 3"and run bigger pipe than turbo outlet ?

im not running intercooler at this moment if it matter

new turbo is china TD05 16/6cm
fredycruger is offline   Reply With Quote Quick reply to this message
Old 12-30-2019, 10:25 AM   #2 (permalink)
Registered User
 
Join Date: Oct 2012
Member # 229476
Location: Gilroy
Posts: 3,996
I don't think it does any harm to have the outlet piping larger diameter. On my little 2.2L Kubota I'm running about 2 feet of 2.5" exhaust, which I'm quite sure is way larger than needed.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
www.33Chevy.net
danielbuck is offline   Reply With Quote Quick reply to this message
Old 12-30-2019, 10:30 AM   #3 (permalink)
Registered User
 
Join Date: Mar 2012
Member # 214685
Location: Akron-Canton, OH
Posts: 630
I know there is quite a bit of science behind the whole deal. Larger piping can cause more lag/pressure drop. Probably really only matters on race car applications where every HP matters.
Byro is offline   Reply With Quote Quick reply to this message
Old 12-30-2019, 10:39 AM   #4 (permalink)
today
 
fredycruger's Avatar
 
Join Date: Aug 2012
Member # 225557
Location: MA
Posts: 1,501
just measured the stock outlet and its about 1.5"
so im thinking ill be fine with 2" intake
this turd only have about 120 HP. and i got all the pieces here to finish the cold side.
ill run it
fredycruger is offline   Reply With Quote Quick reply to this message
Old 12-30-2019, 10:40 AM   #5 (permalink)
today
 
fredycruger's Avatar
 
Join Date: Aug 2012
Member # 225557
Location: MA
Posts: 1,501
Quote:
Originally Posted by danielbuck View Post
I don't think it does any harm to have the outlet piping larger diameter. On my little 2.2L Kubota I'm running about 2 feet of 2.5" exhaust, which I'm quite sure is way larger than needed.
sorry. i was talking about intake piping
fredycruger is offline   Reply With Quote Quick reply to this message
Old 12-30-2019, 10:48 AM   #6 (permalink)
Registered User
 
Join Date: Mar 2009
Member # 133009
Location: Memphis 10
Posts: 3,326
Quote:
Originally Posted by fredycruger View Post
sorry. i was talking about intake piping
Like pre compressor? You could cut up a plastic garbage can and use it as piping and that turbocharger wouldn't know the difference.

Post compressor/pre cylinder head you will still be fine with .5-1" larger if that's what you want to do.
__________________
86 Zook. Links are for websites.

Last edited by DirtRoads; 12-30-2019 at 10:50 AM.
DirtRoads is offline   Reply With Quote Quick reply to this message
Old 12-30-2019, 01:12 PM   #7 (permalink)
today
 
fredycruger's Avatar
 
Join Date: Aug 2012
Member # 225557
Location: MA
Posts: 1,501
Quote:
Originally Posted by DirtRoads View Post
Like pre compressor? You could cut up a plastic garbage can and use it as piping and that turbocharger wouldn't know the difference.

Post compressor/pre cylinder head you will still be fine with .5-1" larger if that's what you want to do.
yeah post compressor
turbo to intake manifold
fredycruger is offline   Reply With Quote Quick reply to this message
Old 12-30-2019, 01:44 PM   #8 (permalink)
Registered User
 
Join Date: Mar 2009
Member # 133009
Location: Memphis 10
Posts: 3,326
Quote:
Originally Posted by fredycruger View Post
yeah post compressor
turbo to intake manifold
Run it
__________________
86 Zook. Links are for websites.
DirtRoads is offline   Reply With Quote Quick reply to this message
Old 12-30-2019, 01:50 PM   #9 (permalink)
today
 
fredycruger's Avatar
 
Join Date: Aug 2012
Member # 225557
Location: MA
Posts: 1,501
Quote:
Originally Posted by DirtRoads View Post
Run it
stay with 2" cold side from turbo to intake manifold ?
fredycruger is offline   Reply With Quote Quick reply to this message
Old 12-30-2019, 05:08 PM   #10 (permalink)
Registered User
 
Join Date: Mar 2009
Member # 133009
Location: Memphis 10
Posts: 3,326
Quote:
Originally Posted by fredycruger View Post
stay with 2" cold side from turbo to intake manifold ?
If that's what you've got. You could step it up if necessary or run 2", I don't think you will see a difference between the two. Just go with what's easiest IMO
__________________
86 Zook. Links are for websites.
DirtRoads is offline   Reply With Quote Quick reply to this message
Old 12-30-2019, 05:14 PM   #11 (permalink)
Registered User
 
Join Date: Feb 2007
Member # 86724
Posts: 29,961
Quote:
Originally Posted by fredycruger View Post
stay with 2" cold side from turbo to intake manifold ?
yes.

it's not worth the hassle unless you're adapting it to an intercooler or something.
__________________
Electricity is really just organized lightning.
87manche is offline   Reply With Quote Quick reply to this message
Old 12-31-2019, 04:09 AM   #12 (permalink)
Zeus of the Sluice
 
arse_sidewards's Avatar
 
Join Date: Feb 2013
Member # 256962
Location: People's Republic of Taxachusetts
Posts: 3,769
Quote:
Originally Posted by fredycruger View Post
this turd only have about 120 HP.


Might be cheaper to swap in a smog era slant 6 if you're looking for an upgrade.
arse_sidewards is offline   Reply With Quote Quick reply to this message
Old 12-31-2019, 07:07 AM   #13 (permalink)
today
 
fredycruger's Avatar
 
Join Date: Aug 2012
Member # 225557
Location: MA
Posts: 1,501
Quote:
Originally Posted by arse_sidewards View Post


Might be cheaper to swap in a smog era slant 6 if you're looking for an upgrade.
meh. slant 6 its not much of an upgrade

145 PS (107 kW; 143 bhp) @ 4000 RPM
33.7 kg⋅m (330 N⋅m; 244 lb⋅ft) @ 2000 RPM
s-l1600 by fredycruger, on Flickr
fredycruger is offline   Reply With Quote Quick reply to this message
Old 01-09-2020, 09:40 AM   #14 (permalink)
today
 
fredycruger's Avatar
 
Join Date: Aug 2012
Member # 225557
Location: MA
Posts: 1,501
ended up going with 2"pipe





welded M 10x1 nut to the pipe for boost gauge,and got coat of paint




fredycruger is offline   Reply With Quote Quick reply to this message
Old 01-09-2020, 09:45 AM   #15 (permalink)
Registered User
 
larboc@hotmail.com's Avatar
 
Join Date: Mar 2006
Member # 70148
Location: da U.P. of MI eh?
Posts: 6,237
There needs to be one of those family guy tophats vs. meg memes for people who don't intercool.
__________________
I don't pay nothing for anything.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
larboc@hotmail.com is offline   Reply With Quote Quick reply to this message
Old 01-09-2020, 10:45 AM   #16 (permalink)
Pirate4x4 Addict!
 
yozsi's Avatar
 
Join Date: May 2007
Member # 91857
Location: Vallejo, CA
Posts: 6,784
Send a message via AIM to yozsi
Quote:
Originally Posted by [email protected] View Post
There needs to be one of those family guy tophats vs. meg memes for people who don't intercool.
intercooling is over rated. my 1st gen dodge made 360hp and close to 1000lbft tq with only a crossover pipe. egt's while towing were perfectly controllable.
__________________
92 Nissan Pathfinder- 3 Link SAS, 4 link rear
02 Dodge 2500 QC LB 4x4, CTD daily.

Foreign Car Center
Vallejo, CA
yozsi is online now   Reply With Quote Quick reply to this message
Old 01-09-2020, 10:50 AM   #17 (permalink)
Registered User
 
Join Date: Aug 2004
Member # 34724
Location: Lac Ste Anne, AB, CANADA
Posts: 3,515
So you actually were talking about the pressure side of piping and not the cold side of the turbo (intake) by looking at the pictures.

I have made cold side intakes out of PVC piping, it works. Not the greatest, but works.
__________________
I get nervous in social situations motherfucker!
EHeye is offline   Reply With Quote Quick reply to this message
Old 01-09-2020, 10:51 AM   #18 (permalink)
Registered User
 
larboc@hotmail.com's Avatar
 
Join Date: Mar 2006
Member # 70148
Location: da U.P. of MI eh?
Posts: 6,237
Quote:
Originally Posted by yozsi View Post
intercooling is over rated. my 1st gen dodge made 360hp and close to 1000lbft tq with only a crossover pipe. egt's while towing were perfectly controllable.
What was your boost pressure at 1000 torques?
__________________
I don't pay nothing for anything.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
larboc@hotmail.com is offline   Reply With Quote Quick reply to this message
Old 01-09-2020, 10:54 AM   #19 (permalink)
Pirate4x4 Addict!
 
yozsi's Avatar
 
Join Date: May 2007
Member # 91857
Location: Vallejo, CA
Posts: 6,784
Send a message via AIM to yozsi
Quote:
Originally Posted by [email protected] View Post
What was your boost pressure at 1000 torques?
45-48 psi.

Edit. Only hit 42ish on the Dyno but on a long 4th gear run I'd see 48psi.
__________________
92 Nissan Pathfinder- 3 Link SAS, 4 link rear
02 Dodge 2500 QC LB 4x4, CTD daily.

Foreign Car Center
Vallejo, CA

Last edited by yozsi; 01-09-2020 at 10:55 AM.
yozsi is online now   Reply With Quote Quick reply to this message
Old 01-09-2020, 11:18 AM   #20 (permalink)
Registered User
 
larboc@hotmail.com's Avatar
 
Join Date: Mar 2006
Member # 70148
Location: da U.P. of MI eh?
Posts: 6,237
Quote:
Originally Posted by yozsi View Post
45-48 psi.

Edit. Only hit 42ish on the Dyno but on a long 4th gear run I'd see 48psi.

That's over 300F air going into the engine.
You're having to make an extra ~14psi of boost due to not being intercooled. That's extra pumping and compression work with no benefit.

(STP conditions, napkin math.)

I'm not saying it's CRITICAL, I'm just saying it's 90's Busch league to omit inter-cooling, especially over a bar of boost.
__________________
I don't pay nothing for anything.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by [email protected]; 01-09-2020 at 11:23 AM.
larboc@hotmail.com is offline   Reply With Quote Quick reply to this message
Old 01-09-2020, 11:33 AM   #21 (permalink)
today
 
fredycruger's Avatar
 
Join Date: Aug 2012
Member # 225557
Location: MA
Posts: 1,501
i had intercooler before this set up . im planing on upgrade later but i cant run front mount and top mount would need hood cut out to be efficient.

new set up making 20 psi with 900 pre turbo EGT's when i beat on it


im sure there i room for improvement
fredycruger is offline   Reply With Quote Quick reply to this message
Old 01-09-2020, 11:39 AM   #22 (permalink)
Pirate4x4 Addict!
 
yozsi's Avatar
 
Join Date: May 2007
Member # 91857
Location: Vallejo, CA
Posts: 6,784
Send a message via AIM to yozsi
Quote:
Originally Posted by [email protected] View Post
That's over 300F air going into the engine.
You're having to make an extra ~14psi of boost due to not being intercooled. That's extra pumping and compression work with no benefit.

(STP conditions, napkin math.)

I'm not saying it's CRITICAL, I'm just saying it's 90's Busch league to omit inter-cooling, especially over a bar of boost.
oh i believe you. but im also the dude that says 1350 deg egt, pre turbo, sustained, going 80mph uphill while towing is okay.
__________________
92 Nissan Pathfinder- 3 Link SAS, 4 link rear
02 Dodge 2500 QC LB 4x4, CTD daily.

Foreign Car Center
Vallejo, CA
yozsi is online now   Reply With Quote Quick reply to this message
Old 01-09-2020, 11:47 AM   #23 (permalink)
Registered User
 
Join Date: Mar 2003
Member # 17632
Location: West Sacramento, CA
Posts: 8,397
My intercooled first gen with stock cooler pulled really well at 25 psi of boost even though it would make about 32 psi floored. I would use the throttle to control boost on climbs and keep it around 25 when towing. Worked great. I think anything over 25 psi was making too much heat for the stock IC to handle so I was burning fuel and getting no real return beyond that. I am talking towing up long grades here, banging around town empty saw plenty of foot through the radiator action
Travis..
__________________
18 Ram 2500 4x4 Big C and a 6 speed
73 Dodge W100, 400 4spd, stepside project
crashnzuk is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Pirate4x4.Com : 4x4 and Off-Road Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.

** A VERIFICATION EMAIL IS SENT TO THIS ADDRESS TO COMPLETE REGISTRATION!! **

Email Address:
Insurance
Please select your insurance company (Optional)

Log-in


Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 06:01 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 ©2011, Crawlability, Inc.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.