R3VLimited Forums

Go Back   R3VLimited Forums > E30 Technical Forums > Engine & Drivetrain > Forced Induction

Reply
 
Thread Tools Search this Thread
Old 04-13-2019, 07:35 PM   #1
hakop_e30
Member
 
Join Date: May 2014
Location: north hollywood
Posts: 66
Is my goal doable

Hello everyone
I have a boosted m20 stock block mls head gasket and arp head studs
Hd valves hd rocker arms 272 cam
Wasted spark and a meth kit
60lbs injectors
Garrett T3/T4E Turbo
Currently Im at 324whp at 13psi
Yall think I can hit 450ish whp ?
__________________
1989 BMW 325I Mtech 2
hakop_e30 is offline   Reply With Quote
Old 04-13-2019, 09:03 PM   #2
cream_e30
Noobie
 
Join Date: Oct 2018
Location: Alberta Canada
Posts: 27
More factors involved than just that. I don't think you'll reach it on those injectors and wasted spark. Maybe someone will prove me wrong with real dyno numbers.

Sent from my SM-G960W using Tapatalk
cream_e30 is offline   Reply With Quote
Old 04-13-2019, 11:05 PM   #3
SGT StudMuffiin
Member
 
SGT StudMuffiin's Avatar
 
Join Date: Aug 2015
Location: Vancouver, BC
Posts: 88
Out of those specs alone, the injectors seem to be your limiting factor. Also you have to understand that ~30 year old internals can only do so much against 20+ psi over a long period of time, so be prepared with a spare block, or a built block


Sent from my iPhone using Tapatalk
SGT StudMuffiin is offline   Reply With Quote
Old 04-14-2019, 02:51 PM   #4
varg
E30 Mastermind
 
varg's Avatar
 
Join Date: May 2014
Location: Palm Beach County, FL
Posts: 1,906
Yes, but you're going to need a serious clutch. Injectors should be fine imo. Don't expect to be able to put that power down, and if you do don't expect it to be kind to the chassis. I originally put my build together with a 450whp goal, from turbo and fuel pump choice to clutch and good tires, but decided it was impractical.
__________________
@turbovarg
'91 318is, M20B25, T3/T04E 60 trim (15psi), megasquirt, coilovers, Z3 rack, cold AC
[b u i l d]
[Car of the month: April 2018]

Always outnumbered, never outgunned.

Last edited by varg; 04-14-2019 at 03:02 PM.
varg is offline   Reply With Quote
Old 04-14-2019, 05:41 PM   #5
tiger_e30
Advanced Member
 
Join Date: Dec 2016
Location: Greenville SC
Posts: 178
Quote:
Originally Posted by varg View Post
Yes, but you're going to need a serious clutch. Injectors should be fine imo. Don't expect to be able to put that power down, and if you do don't expect it to be kind to the chassis. I originally put my build together with a 450whp goal, from turbo and fuel pump choice to clutch and good tires, but decided it was impractical.
What did you find to be the best balance? In the middle of a turbo build with arp, mls, meth but am only targeting 250 at the wheels

Sent from my SM-G920V using Tapatalk
tiger_e30 is offline   Reply With Quote
Old 04-14-2019, 07:23 PM   #6
SGT StudMuffiin
Member
 
SGT StudMuffiin's Avatar
 
Join Date: Aug 2015
Location: Vancouver, BC
Posts: 88
Quote:
Originally Posted by tiger_e30 View Post
What did you find to be the best balance? In the middle of a turbo build with arp, mls, meth but am only targeting 250 at the wheels

Sent from my SM-G920V using Tapatalk


With a 250whp goal meth is an unnecessary expense as the engine will handle it totally fine. 250whp is also a sweet spot for balance in this car I feel


Sent from my iPhone using Tapatalk
SGT StudMuffiin is offline   Reply With Quote
Old 04-14-2019, 07:33 PM   #7
cream_e30
Noobie
 
Join Date: Oct 2018
Location: Alberta Canada
Posts: 27
Meth is sooooooper not needed

Sent from my SM-G960W using Tapatalk
cream_e30 is offline   Reply With Quote
Old 04-14-2019, 07:34 PM   #8
cream_e30
Noobie
 
Join Date: Oct 2018
Location: Alberta Canada
Posts: 27
Can I ask why you think it was impractical?
I hit 440 then said that's enough.

Sent from my SM-G960W using Tapatalk
cream_e30 is offline   Reply With Quote
Old 04-15-2019, 06:03 PM   #9
tiger_e30
Advanced Member
 
Join Date: Dec 2016
Location: Greenville SC
Posts: 178
I look at the meth as insurance against the tuning learning curve.

Sent from my SM-G920V using Tapatalk
tiger_e30 is offline   Reply With Quote
Old 04-17-2019, 05:12 PM   #10
varg
E30 Mastermind
 
varg's Avatar
 
Join Date: May 2014
Location: Palm Beach County, FL
Posts: 1,906
Quote:
Originally Posted by cream_e30 View Post
Can I ask why you think it was impractical?
I hit 440 then said that's enough.
I'm guessing this is directed at me. I decided 450whp was impractical partially because of increased risk of breaking stuff, and partially because I don't want to spend the time and money on an MLS head gasket or o-ring job at this point. My commute is largely spent in traffic and I rarely get the chance to enjoy the power I have at 15psi of boost for more than a few seconds, so why risk breaking things and shorten the life of my engine by turning up the boost?

The car is plenty fast at 15psi imo. I've been fighting exhaust leaks for the past several months due to a cracking header and warped flanges so I haven't been spending much time with full boost, but when I have it my car has been capable of beating all sorts of 'fast' cars, including an E92 M3 and some sort of modern Bentley. It's a surprisingly fast classic car that is a comfortable daily. What more can you ask for, really?
__________________
@turbovarg
'91 318is, M20B25, T3/T04E 60 trim (15psi), megasquirt, coilovers, Z3 rack, cold AC
[b u i l d]
[Car of the month: April 2018]

Always outnumbered, never outgunned.
varg is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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

Forum Jump


All times are GMT -7. The time now is 01:14 PM.


Powered by vBulletin® Version 3.8.10
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Copyright 2004 - 2020 R3VLimited LLC