Welcome to DSMtuners - the largest Mitsubishi Eclipse, Eagle Talon, 4G63t and 420A DSM performance resource on the web



















Login



Go Back   DSMtuners > DSM Forums > 420A DSM Tech > 420A Bolt-on Tech
Welcome to DSMtuners - the largest Mitsubishi Eclipse, Eagle Talon, 4G63t and 420A DSM performance resource
You are browsing the site as a GUEST. Please login (or register) and gain the ability to post on our site and interact with other DSMers. You also get to browse the site with fewer advertisements. It is FREE to join!

420A Bolt-on Tech: Intake, exhaust, ignition, fuel system, cooling, etc - specific to 2G N/T DSMs. New Members must limit their 420A tech posts to this forum.

Reply  
 
LinkBack   Thread Tools
Old 07-19-2011, 04:54 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #1 (permalink)
Proven Member
 

greengoblin2011's Avatar
Registered: Jul 2011
Tech Posts: 109
Photos: 2
Classifieds Rating: 0
Reputation: greengoblin2011 is an unknown

How Much Boost on Built Engine?


So in the near future, hopefully next year, im planning on a full engine rebuild. Replacing all the basics, adding forged pistons, aem fuel rail, 440cc injectors, obx intake, walbro 255 fuel pump, and a turbo intercooler setup. Havent chosen a turbo setup yet, my main question is this, after this is said and done, what amount of boost will i be able to push? Also, should i use bigger or smaller injectors, and finally, what is a rough guess on horsepower? Dont know alot about turbos yet, still learning and researching, and you guys seem to know your stuff, so ill ask you. Im not afraid to grab a wrench and tear apart, just looking for some advice. This may sound stupid to others, sorry about that. Thanks to all.

View photos of this member's car 

mark post as helpful recommend reputation points    Reply With Quote
Old 07-19-2011, 05:20 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #2 (permalink)
Probationary Member
 

SpooledGSX2's Avatar
Registered: Feb 2009
Tech Posts: 12
Photos: 2
Reputation: SpooledGSX2 is an unknown
I think before you go start tearing stuff apart you should read as much as you can on here. Tutorials, other members problems, blogs on builds anything! You just gotta make your life dsm and then start planning your build on paper before you start buying anything. It'll save you alot of cash in the end!! The plans you have right now for your build aren't ridiculous but just uneducated. Your defiantly gonna need bigger injectors if you plan on making power and don't focus on tearing your motor down and rebuilding it unless it needs it. How many miles are on the car? Does it run well now? Cause thats first, make sure everything is working perfectly and all your maintenance is done before thinking about anything to do with extra performance
View photos of this member's car 

mark post as helpful recommend reputation points    Reply With Quote
Old 07-19-2011, 05:21 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #3 (permalink)
Proven Member
 

CODE4's Avatar
Registered: Jun 2004
Tech Posts: 334
Photos: 8
Classifieds Rating: 0
Reputation: CODE4 is pretty helpful and trustworthy
Send a message via ICQ to CODE4 Send a message via AIM to CODE4
PSI means nothing unless you are comparing turbos in the same class. Selecting injectors must match your target power level. You need to set a realistic power goal and perform the calculations to find out what air density you need to achieve that goal. Once you find what air flow you need, you can browse through compressor maps to determine what turbo will work for your powerband and give you the desired characteristics. Read this:

2GNT.com Forums - Viewing message - Challenge: plot your setup on the compressor map

If you want to educate yourself, buy this book - Amazon.com: Turbo: Real-World High-Performance Turbocharger Systems (S-A Design) (9781932494297): Jay K. Miller: Books - and begin reading about basic theory and how power is made. Build your system around the power goal, do not just slap a big ass turbo on like so many folks here.

And scratch that AEM fuel rail off your list. Worthless. Stock fuel rail will support realistic street power levels.


____________________________
SOLD - 99 RS - 2.4L 406 WHP

Now: 2012 2500HD

Last edited by CODE4; 07-19-2011 at 05:22 PM. Reason: Ditch the fuel rail.
View photos of this member's car 

mark post as helpful recommend reputation points    Reply With Quote
Old 07-20-2011, 09:19 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #4 (permalink)
Proven Member
 

Shake_Zulla's Avatar
Registered: Dec 2010
Tech Posts: 503
Photos: 6
Classifieds Rating: 0
Reputation: Shake_Zulla is pretty helpful and trustworthyShake_Zulla is pretty helpful and trustworthy
Quote:
Originally Posted by CODE4 View Post
PSI means nothing unless you are comparing turbos in the same class. Selecting injectors must match your target power level. You need to set a realistic power goal and perform the calculations to find out what air density you need to achieve that goal. Once you find what air flow you need, you can browse through compressor maps to determine what turbo will work for your powerband and give you the desired characteristics. Read this:

2GNT.com Forums - Viewing message - Challenge: plot your setup on the compressor map

If you want to educate yourself, buy this book - Amazon.com: Turbo: Real-World High-Performance Turbocharger Systems (S-A Design) (9781932494297): Jay K. Miller: Books - and begin reading about basic theory and how power is made. Build your system around the power goal, do not just slap a big ass turbo on like so many folks here.

And scratch that AEM fuel rail off your list. Worthless. Stock fuel rail will support realistic street power levels.
This ^
I would like to add, however, that if you are not planing an engine rubuild the stock pistons and rods will not support any PSI above 8-10. So what HP can you expect to see at 8psi? Well it depends. Mostly on the fuel and air temp believe it or not, of course there are other factors that go into it as well. Psi is NOT a way to measure power. First you want to consider what you want to do with your car. Do you want a faster DD? Do you want to race autocross (my personal fav)? Or are you looking for a Drag car? Then after you have decided that you need to set a HP goal and make calculations from there. Here is a link where I showed how to calculate for your HP goal all my info can be confirmed on Garrett's website under the turbo tech sections.
Whats needed for 350hp on 10.5 CR -- Post #20

Sorry re-read and noticed you are planing to build the motor so a lot of your hp/psi restrictions are going to hinge on tunning and turbo setup. Are you planing on running MS or Portfueler? You won't be able to fine tune those bigger injectors without.


____________________________
Jared
96 Really Slow (RS)
View photos of this member's car 

mark post as helpful recommend reputation points    Reply With Quote
Old 07-20-2011, 12:38 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #5 (permalink)
Proven Member
 

greengoblin2011's Avatar
Registered: Jul 2011
Tech Posts: 109
Photos: 2
Classifieds Rating: 0
Reputation: greengoblin2011 is an unknown
I guess what im trying to acheive overall is just a car that is still as much fun to drive on the street as it is now, but now i love taking it to the local drag strip and running the quarter mile, just not happy with a 16.42 time. As far as an ms or portfueler, honestly dont know what,they are. I have read on here about an edu, and im planning one of those. Also i failed to mention in my post that im looking at cowler cams and aem cam gears also. As far as a total rebuild, my motor has 200,000 now, im concerned boost at that mileage will do more damage than good. Id like to pull say maybe 15psi? Im definately going to get that book. Thanks for all the help and advice guys. Id also like to set it up for nos, but not sure ill ever run any. Just wanna prep in case my future wants it. Haha. Again, thanks guys. I have alot to learn.
View photos of this member's car 

mark post as helpful recommend reputation points    Reply With Quote
Old 07-20-2011, 01:01 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #6 (permalink)
Proven Member
 

CODE4's Avatar
Registered: Jun 2004
Tech Posts: 334
Photos: 8
Classifieds Rating: 0
Reputation: CODE4 is pretty helpful and trustworthy
Send a message via ICQ to CODE4 Send a message via AIM to CODE4
Quote:
Originally Posted by greengoblin2011 View Post
Id like to pull say maybe 15psi?
First, try and make an effort to use proper spelling and grammer (friendly reminder).

Next, as mentioned above, PSI is not a measure of power of any kind. So your statement holds no water.

15 psi on a T25 is not 15 psi on a Garrett 3076R.


____________________________
SOLD - 99 RS - 2.4L 406 WHP

Now: 2012 2500HD
View photos of this member's car 

mark post as helpful recommend reputation points    Reply With Quote
Old 07-20-2011, 04:24 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #7 (permalink)
Proven Member
 

Shake_Zulla's Avatar
Registered: Dec 2010
Tech Posts: 503
Photos: 6
Classifieds Rating: 0
Reputation: Shake_Zulla is pretty helpful and trustworthyShake_Zulla is pretty helpful and trustworthy
Quote:
Originally Posted by greengoblin2011 View Post
1) As far as an ms or portfueler, honestly dont know what,they are.

2) Id like to pull say maybe 15psi?

3) I have alot to learn.
First to "pull 15psi" you will need to know what these things are.
Second if you want to run 15psi thats great but there are many different HP numbers you can pull at that preasure just to reiterate.
Third yes... yes you do have a lot to learn. This will do a good job getting you somewhat caught up. 2GNT.com - Power_Stages be sure to read ALL of the power stages.


Quote:
Originally Posted by CODE4 View Post
First, try and make an effort to use proper spelling and grammer (friendly reminder).

Next, as mentioned above, PSI is not a measure of power of any kind. So your statement holds no water.

15 psi on a T25 is not 15 psi on a Garrett 3076R.
When did you start giving "friendly" reminders?


____________________________
Jared
96 Really Slow (RS)
View photos of this member's car 

mark post as helpful recommend reputation points    Reply With Quote
Old 07-20-2011, 09:24 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #8 (permalink)
Proven Member
 

greengoblin2011's Avatar
Registered: Jul 2011
Tech Posts: 109
Photos: 2
Classifieds Rating: 0
Reputation: greengoblin2011 is an unknown
Awesome. Thanks guys, I have alot of research to do. If I have any more questions I will definately ask you guys. Thanks again.

Ok, so I read all the other site pages you guys posted and have studied through other posts on this forum and one question did arise. I read one post on here, ( cant recall exactly where), about someone saying if you turbo your non turbo, you must do the jeep throttle body upgrade. I looked over my parts list and I am getting a different throttle body which should be fine shouldnt it? Its a larger oopening than stock(60mm). I also read all the power stages and the only thing I didnt have on my list was connecting rods, which I will be hunting down a set. I still am going to invest in that book, just kind of updating you guys. Thanks. Just a side note, I know I still have alot to learn on turbo, and plan on educating, as far as my wrench skills, I have rebuilt a motor before. A chevy 402, which I know is totally different from my 4 banger, plus it was all motor, which is again different from my plan. Anyway, back to more research. Thanks guys.

Last edited by greengoblin2011; 07-21-2011 at 09:17 AM. Reason: Auto-merged with previous post to prevent "bumping" within a 24 hour period Tips on avoiding the auto-merge feature - http://www.dsmtuners.com/forums/faq.php?faq=vb_faq#faq_bumping
View photos of this member's car 

mark post as helpful recommend reputation points    Reply With Quote
Reply

Bookmarks

Thread Tools

 

» Recent DSM Photo
» Current Poll
How many times have you been to the Shootout?
1 - 40.00%
168 Votes
2-5 - 41.67%
175 Votes
6-10 - 10.48%
44 Votes
11-15 - 3.10%
13 Votes
16-20 - 4.76%
20 Votes
Total Votes: 420
You may not vote on this poll.
» Online Users: 838
206 members and 632 guests
Most users ever online was 1,704, 03-17-2008 at 09:11 PM.
DSMtuners Main Sections
DSM Forums
DSM Regional Forums
DSM Builds/Journals
DSM Articles
DSM Tech Guides
DSM Upgrade Paths
DSM Parts Reviews
DSM Vendor Reviews

DSM Classifieds
DSM Parts Guides
DSM Photos
DSM Videos
DSM Timeslips
DSM Dyno Sheets
Shirts & Apparel
DSMtuners Decals

Advertising Info
Our Sponsors
Site Rules
Terms of Service
Privacy Policy
Site FAQ
About Us
Contact Us

© 2014 DSMtuners.com - All Rights Reserved

DSMtuners is not affiliated with Diamond Star Motors. The Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, Mitsubishi Galant VR-4, and associated logos are trademarks of Diamond Star Motors, Mitsubishi Motors, and Chrysler Corporation. No, we do not hand out car sponsorships.

All times are GMT -7. The time now is 03:38 PM.


Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Search Engine Optimization by vBSEO 3.6.0