RRT just finished rebuild of my twin screw S52. Stayed with stock compression, but went with CP pistons, RMS headers (SwainTech coated), ARP 2000 studs w/stock Elring headgasket, upgraded oil pump, and improved cooling system. Still using "stock" OBDII tuning that Jim Conforti provided for Eurosport's kits.
Motor was broken-in last week on a DynoDynamics 450 Eddie Loading dyno at Function:TUNED, a tuning shop around the corner from RRT in Dulles, VA. DynoDynamics read consistently lower than Mustang dynos and, according to some reports, approx. 14%-16% lower than Dynojets.
Rebuilt motor -- which should get stronger as it loosens up -- showed 348 rwhp and 310 ft-lbs. Didn't get chart from the shop, but will post one when I get car on a Dynojet early next month.
I'm very pleased!
Neil
Last edited by Neil; 02-17-2009 at 08:14 PM.
MDORPHN - 2011 Alpine White 1 Series M Coupe w/stuff
Great news Neil!! Just in time for HPDE "season" too!!
What boost you at?
Don
I'm using the stock pulley that Eurosport provided. IIRC, I was somewhere around 9.5 psi. I'm sure that I now have less boost because of the headers.
Just got the car back last night and haven't had a chance to re-set/re-calibrate the boost gauge. I'll report back once I've done so.
Neil
MDORPHN - 2011 Alpine White 1 Series M Coupe w/stuff
What caused you to do the engine re-build, too many track hours? I know your's didn't ingest a supercharger like mine did.
1997 BMW M3/4 Cosmos Black Luxury Package 437whp 378 ft/lbs torque Dyno Dynamics Dyno
10 psi Stage III KO Performance Vortech supercharger,
117k with the TS?
That's awesome, Neil.
No PMs. Email through forum please.
Yeah, that's one thing about this Eurosport TS - bulletproof reliability. I think he had the input bearing unit replaced with an updated unit from Eurosport about 2 years ago, but otherwise the system has been nothing but amazing.
James Muskopf
RRT Racing
DC Metro's premier BMW service and racing facility
nice numbers Neil, any build specs?
Those headers are badass aren't they!?
Jmc
Motor: Hurtig/AA custom 2.0l TS OBD2 AA tuned 444whp/384wtq SAE 470whp/400wtq STD
Exhaust RMS headers, Maximum PSI custom exhaust, magnaflow mufflers
Driveline E46 M3 6 SPEED, 2.93 LSD, Rouge SSK/tranny mounts, UUC Ultrasmooth /LTW steel flywheel. CDV delete, UUC clutch pedal bushings with GSP pedal
COOLING: Stewart WP, 78* thermostat, S54 radiator, Euro/S54 oil cooler, ES TS oil cooler adapter, M3 power steering cooler
HANDLING: MR M CAR SF reinforcement, TCK D/A CO 450/500, TCK Camber Plates, Rogue RSM, Ireland SFB, Dinan STB. CCW classics, polished lip, brushed centers. P295/30/18 P245/35/18.
THE SHOW: Stygar Z8 Nozzels, Leather Z armrest, Z8 push button start, chrome door handles, OEM FOGS, BMW Traffic Pro.
Monitoring: PLX Wideband, VDO vision boost/VAC both with custom chrome trim ring.
COMING SOON: custom intake
Very nice Neil! It's a shame that nobody makes these kits anymore.
A word of Internet Forum wisdom: Disregard any advice that begins with "I've heard..."
97 M3/4 - S54, TRM Coilovers, UUC SSK/Sways/LTW Flywheel
no..but I did practically pull them out my butt...
Hard to find these headers new anywhere....
I will have them available soon, the jig is being made...
And I am having my guy make a jig for my own version of an AA front half track pipe to mate up to them...2.25 pipe up to the headers..prefit for the headers, and a TRUE 3 inch collector( not a smaller tapered collector)..to join to the rear half trackpipe, or aA race exhaust, or whatever you want to bolt up to it...
2008 335I Space Grey,Black leather, Steptronic
Vishnu Procede V3 (16-17 lb boost) ,AA FMIC,AA Discharge tube/BOV,AA Downpipes,AA Race Exhaust, AFE Elite intake,BSH catch can, OS Giken LSD, PSS10 suspension, H&R sway bars, Motorsport CF strut brace, Stoptech BBKS, Forgeline ZX3S 19 x 8.5 front and 19 x 9.5 rears w/P235 35 19 fronts and P275 30 19 rear Conti Extreme DW's,Motorsport alcantara digital steering wheel, P3 boost gauge..etc
2011 X3 X-Drive 35i, Mineral Silver, Oyster leather
Hartge Power Pack tuner, H&R sport springs, Forgeline DE3S 19 x 9 Conti Extreme DW P245 45 19 all around, Supersprint Exhaust
AA Preferred Dealer
Very nice numbers Neil! Any comments as to how your motor was broken in? I'm curious
Pretty much followed the MotoTune approach:
http://www.mototuneusa.com/break_in_secrets.htm
Neil
MDORPHN - 2011 Alpine White 1 Series M Coupe w/stuff
Good that is all back together. I remember seeing the shelves of parts for your car, not to mention the engine and blower just chillin there at RRT...
Neil,
Did you keep the oil level sight glass thing? The oil seperator I added has captured not a single drop of oil.
TANKS95 -- What happened to yours?good stuff! my rebuild should be done by july, hopefully earlier.
Johno
-- 2003 e46 M3
-- 2018 e90 M5
-- Warm memories of 99 M3 w/ Eurosport Twin Screw, 2007 335i, 1970 Cutlass, 1989 328is, 1990 328i, 2012 S4, 2018 S4
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