e30tech.com Forums


Go Back   e30tech.com Forums > Technical > Engine > M10
Register FAQ Members List Sponsors Advertise Shop Search Today's Posts Mark Forums Read







Reply
 
Thread Tools Display Modes
Old 04-17-2012, 10:57 AM   #1
solo318
Senior Member
 
solo318's Avatar
 
E30: several
Location: Central Florida
Join Date: Aug 2007
Posts: 140
solo318 is on a distinguished road
Smile Turbo choice

I'm really hoping some of you guys will chime in here. I am building a new motor based on Nosco's 2150cc set up. I curently have a 53 exhaust and .60 intake t3 from a thunderbird turbocoupe ( or mustang SVO). at 25 psi this thing is gasping for air. I need a set up that boosts reasonably quick and has the potential for 40psi. Anyone have an experienced suggestion?
solo318 is offline   Reply With Quote
Guest Message
Tire Rack - Pure Control
Old 04-17-2012, 02:08 PM   #2
Q5Quint
Senior Member
 
E30: 89 325is
Location: Boone, NC
Join Date: Feb 2005
Posts: 2,990
Q5Quint is a splendid one to beholdQ5Quint is a splendid one to beholdQ5Quint is a splendid one to beholdQ5Quint is a splendid one to beholdQ5Quint is a splendid one to beholdQ5Quint is a splendid one to beholdQ5Quint is a splendid one to behold
Send a message via AIM to Q5Quint
Default

I think your turbo is actually too big?

Try a turbo calculator like this one that has maps and find something that suits. I had a t3 super 60 with a little exhaust housing and it was awesome on a m20 around town.... but on a m10 you are running in the surge limit zone even at 30psi.

I tried putting the numbers for a stock size 318 in here and it looks like you are riding the surge limit curve on a super-60 trim t3. http://www.turbofast.com.au/turbomap.html

" To the left of the envelope, where it is marked "surge limit", the flow through the compressor is unstable and will go up and down and backwards unpredictably. This is surging. Do not pick a turbo that will operate in this area! It can be very damaging."
http://www.gnttype.org/techarea/turbo/turboflow.html

30+psi is getting a bit crazy....with a different turbo you could probably get more power with less boost... but even the calculator says the m10 will still only have 313hp at 30psi lol

Makes sense... about 2 liters at 4bar would be 6 liters of air. My jeep has a v-8 360 that is that big N/A Also it only has like 170hp.

Where is good&tight? He had a pretty rad holset for a while. Check out his old thread here: http://www.e30tech.com/forum/showthread.php?t=26990

26psi should be giving you about 300hp~ maybe a holset is what you need?

M10B18
L-Jetronic Fuel Injection
Displacement 107.8 CI 1,766 cc
101 hp (75 kW) @5,800 rpm
103 lb·ft (140 Nm) @4,500 rpm
Compression: 9.0:1
Stroke 2.79 in (71 mm)
Bore 3.50 in (89 mm)
Firing order 1, 3, 4, 2
__________________


Check out my Turbo recipe!
Painted Bottle Caps
Intercooler Setup: 24x12x3"
Car Alarm/Kelyless Entry: How-To
Blitz Black DIY: Paint
3" Exhaust
Buy my stuff! For Sale!
Q5Quint is offline   Reply With Quote
Old 04-17-2012, 02:36 PM   #3
solo318
Senior Member
 
solo318's Avatar
 
E30: several
Location: Central Florida
Join Date: Aug 2007
Posts: 140
solo318 is on a distinguished road
Default

Actually the problem with my turbo is exhaust flow. It spools up really well and doesn't surge. The engine is (was) 9.3 to 1 with a 292 schrik cam, 48 mm itbs. My only real concern is exhaust flow through the housing and the dramitic rise in intake temps above 20 psi.
With the added displacement and longer stroke of the 2150, I'm afraid I'll need even more exhaust flow and that will amplify my existing problem.
The last dyno run on the 1.8 liter was 253 at the wheels. with a 3:73 rear.
I wish there was a local engine dyno. I'd like to see some real hp numbers
This car ran 2:32 laps at sebring long course at an average of almost 90mph I love my m10

Last edited by solo318 : 04-17-2012 at 02:42 PM. Reason: additions
solo318 is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 04:04 AM.






Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.