Lets see your Numbers!
I have a 1987 325is ( with a m20 2.5L) and i am wanting to do some stuff, I already have a cold air intake, and a ghetto exhaust, which will be changed to headers to a borla muffler soon, but i was wandering if you could tell me what you have done to your car, and what rear wheel power you are pushing, thanks alot guys,
-
Last edited by CrJdMc; 08-21-2012, 06:24 AM.sigpicInstagram: bir_madhatter
Add me on Facebook: https://www.facebook.com/connor.mcco...57?ref=tn_tnmn -
bump?sigpicInstagram: bir_madhatter
Add me on Facebook: https://www.facebook.com/connor.mcco...57?ref=tn_tnmn -
If you want performance from the car, replace the the CAI with the stock airbox. It is almost impossible to do better than the stock air box. The only low cost performance upgrades that will actually increase power on this motor are exhaust and a chip. After that you are into money. If I were going to chip an engine it would be with a WAR chip.
A race built engine, using the stock engine management system and stock engine internals, can make 160-165rwhp on a DynoJet. My Spec E30 made 162rwhp the last time I had it on the dyno. My DD has a freshly built built engine, but I didn't put quite as much attention to it in the build and it made 156rwhp on a DynoJet. The Spec E30 rules require everything to be OE or equal and porting & polishing is not permitted. The only thing the race engine has, which my DD doesn't, is a very free flow exhaust.The car makes it possible, but the driver makes it happen.
Jim Levie, Huntsville, ALComment
-
ohh ok,
i was thinking,
-polished and ported heads,
-chip,
-eventually cam.
-light flywheel,
and clutch
will these be noticable?sigpicInstagram: bir_madhatter
Add me on Facebook: https://www.facebook.com/connor.mcco...57?ref=tn_tnmnComment
-
Whats the consensus on stock paper air filter vs. K&N / Afe Pro5 / AFe Pro Dry / etc. drop-in filter? What flows the most air? Is there a paper brand (STP, AC Delco, Mann, etc) that is better than the rest? on par or better for flow than a foam/gauze panel?
(note - I am NOT talking about replacing the airbox, only the filter element)Last edited by NigelStu; 08-21-2012, 12:46 PM.Ben
Thelma-Louise, the '88is Chump Car - back to M20 power!
2014 ChumpCar Season Schedule!
April 5-6 Autobahn, IL - Sat: 1st! Sun: 3rd
May23-25 Watkins Glen, NY: 4th, 5th, 4th
October 4 PittRace Sprints: 2nd in C-class
October 18-19 NCM, Bowling Green KY: 2nd, 1st!
Nov 1-2 Watkins Glen - Chumpionship - 1st car to exit the race with significant body damage :(
Find us on FB! Schaut Speed MotorsportsComment
-
That would be noticeable. You might want to look at what the folks at Metric Mechanic have to say about porting/polishing a head. Porting works if done exactly right, but correctly roughened passages flow better. If you are going to port the head, do the cam at at the same time.The car makes it possible, but the driver makes it happen.
Jim Levie, Huntsville, ALComment
-
^ Listen to that guy. He's a guru of sorts.
clutchCTRL!Move with a purpose.- 1991 325iX 4dr/5spd- 1976 2002 SlickTop/2.7i M20/G260- 2000 323i AT2016 Mazda CX3 Sport AWDComment
-
sigpicInstagram: bir_madhatter
Add me on Facebook: https://www.facebook.com/connor.mcco...57?ref=tn_tnmnComment
-
More than likely, No.
To reach 200, you pretty much need:
Custom 10:1 pistions
135mm S50 rods
B2.7 crank 284/272 cam
Head Porting.
really well done exhaust
Megasquirt...
Reaching 200hp on an m20b25 with stock internals? Not really gonna happen.
Read up.
Last edited by TurboJake; 08-21-2012, 01:14 PM.Comment
-
So would a swap be in my best interest if i wanted to see anything about 200whp?sigpicInstagram: bir_madhatter
Add me on Facebook: https://www.facebook.com/connor.mcco...57?ref=tn_tnmnComment
-
-
Comment