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Posted: Feb 16, 2007 4:30 AM
by gol10dr1
stock pistons or stock compression? my friend ulysses ran 33 psi with only a low compression headgasket and head studs but obviously that was on race gas. this was also on a chip tune. he later stepped it up to a tec3r and threw a rod on a 35 psi run. it was actually the rod bearing so the rod itself didn't even fail. i imagine it is a little bit less for the s5x motors as the rods are not nearly as beefy as the m5x motors and i can't speak for the toughness of the pistons.
Posted: Feb 16, 2007 7:49 AM
by shifty
vance wrote:
Have either been swaped into an e28?
Vance
An M50 has been
swapped into an E28 before. I don't recall what the car used to be, but it then became a 525i. Supposedly, it was pretty quick. Required lots of custom work. The E30 guys do this all the time, but very few E28 guys do it.
Posted: Feb 16, 2007 7:54 AM
by vance
shifty wrote:vance wrote:
Have either been swaped into an e28?
Vance
An M50 has been
swapped into an E28 before. I don't recall what the car used to be, but it then became a 525i. Supposedly, it was pretty quick. Required lots of custom work. The E30 guys do this all the time, but very few E28 guys do it.
Thanks Shifty. I had seen the e30 conversion done, but I wasn't sure if steering components would get in the way on the e28. I'll do some more research.
Vance
Posted: Feb 16, 2007 9:22 AM
by T_C_D
Matt wrote:Q1: what sorts of boost can you run on stock pistons int he M50/S50? Aren't those relatively high compression engines?
Q2: what engine management goes with an FI M50? What does that do to the rest of the car ? (Instrument cluster functions, etc)
Q3: Presumably this is an E36/E34 sort of project? Even though the E39 6s are still M5x series motors, the electronics in those cars are new/integrated/complex enough so as to pose a problem to seamless forced induction?
In any case, I'll need an E34 535i M30 manual TCD S3 black/black/shadowline sedan please.
...oh... And i'll need an E34 525i M50 manual TCD S3 black/black/shadowline wagon please...
My dream is that some day I can hand TCD or one of his designated appointees a pile of money and he'll build me a car the way i want it with no "old car" issues.
Unfortuneately, i have neither the funds or the parking spots to make good on my dreams. But i wonder - is there room in the TCD business model for installation / customization / tuning of customer cars?
A1: 7-9psi
A2: We offer SEM plug/play for OBD1 and AEM plug/play for all e36 applications. Seemless integration.
A3: I just need to buy an e39 so we can sort that out.
A4: We already do installs/custimization and tuning of customer cars. If all goes as planned we'll be moving to a much larger facility and purchasing a dyno.
Todd
Quick ones...
Posted: Feb 16, 2007 9:43 AM
by SpongeBob
Hey Todd -
A couple of quick ones -
1 You have any guestimates on HP and TRQ for a stock (high compression) S52 TCD setup? Any guesses on where in the RPM range pick TRQ will be?
2 Any advantage of going to the higher flow M50/S50 intake, vs the low flow M52/S52 manifold for a turbo setup?
3 Do you think an oil cooler will be necessary for street use and light track day duty?
Looks great, congrates to the TCD crew.
SBSP
Re: Quick ones...
Posted: Feb 16, 2007 10:00 AM
by T_C_D
SpongeBob wrote:Hey Todd -
A couple of quick ones -
1 You have any guestimates on HP and TRQ for a stock (high compression) S52 TCD setup? Any guesses on where in the RPM range pick TRQ will be?
2 Any advantage of going to the higher flow M50/S50 intake, vs the low flow M52/S52 manifold for a turbo setup?
3 Do you think an oil cooler will be necessary for street use and light track day duty?
Looks great, congrates to the TCD crew.
SBSP
A1. ~360rwhp/360rwtq @ 8psi but probably more. Peak tq at 4000rpm
A2. Everyone seems to do it but I have never seen any real back to back testing.
A3. Light track duty? What does that mean? I think that is very dependent on the ambient temperature and length of the sessions. I personally suggest using it although Dave Read did over 3000 miles without one during the past two years at a similar HP level in a m30.
Thanks for the props.
Todd
Posted: Feb 16, 2007 10:35 AM
by russc
Look at this thread at BF.c
BF.c Dyno chart thread
There are plenty of FI S5x and M5x dyno charts out there to get any info you need.
Most FI later BMWs are getting chip tunes from the AA, EuroSport(JimC), VF Eng., Dinan, GIAC etc. These chips are for the stock ECUs. JimC has been saying for yrs that the BMW/Siemens ECU is more powerful than the aftermarket stuff, its just way harder to tune since it does so much.
RussC
Oil Cooler
Posted: Feb 16, 2007 11:14 AM
by OldgreenE34
Hey Tood,
I guess I didn't tell you that I added an oil cooler spring of 2006. I would suggest that a car that sees the track (not the strip) have an oil cooler.
On hot days I also ran with the heater on full blast to keep the water temps down. It should also be said that I never had heat issues until my driving improved and the amount of time at WOT increased.
Dave
Posted: Feb 16, 2007 12:40 PM
by rundatrack
gol10dr1 wrote:stock pistons or stock compression? my friend ulysses ran 33 psi with only a low compression headgasket and head studs but obviously that was on race gas. this was also on a chip tune. he later stepped it up to a tec3r and threw a rod on a 35 psi run. it was actually the rod bearing so the rod itself didn't even fail. i imagine it is a little bit less for the s5x motors as the rods are not nearly as beefy as the m5x motors and i can't speak for the toughness of the pistons.
I dont think that would last long..
Posted: Feb 17, 2007 1:29 PM
by smackmybutter535i
T_C_D wrote:
will this fit in an e30s52 conversion car?
Posted: Feb 17, 2007 2:45 PM
by T_C_D
smackmybutter535i wrote:
will this fit in an e30s52 conversion car?
Yes.
Posted: Feb 18, 2007 8:36 AM
by gol10dr1
rundatrack wrote:gol10dr1 wrote:stock pistons or stock compression? my friend ulysses ran 33 psi with only a low compression headgasket and head studs but obviously that was on race gas. this was also on a chip tune. he later stepped it up to a tec3r and threw a rod on a 35 psi run. it was actually the rod bearing so the rod itself didn't even fail. i imagine it is a little bit less for the s5x motors as the rods are not nearly as beefy as the m5x motors and i can't speak for the toughness of the pistons.
I dont think that would last long..
ulysses' car actually lasted a while considering the abuse.....he drove it on the street quite a bit and it suvived many 30+psi runs at the track.......when it finally shit the bed, it was after multiple dyno runs the same day with 35 psi and a semi aggressive tune on the tec3r.
Posted: Feb 18, 2007 9:54 AM
by smackmybutter535i
Turbo+s52+1991 325is= frickin awesome
I'm thinking of a new project of my own
Posted: Feb 18, 2007 11:32 AM
by shifty
smackmybutter535i wrote:Turbo+s52+1991 325is= frickin awesome
Sounds kinda like Randy Sparre's supercharged S50-powered E30.
Re: Quick ones...
Posted: Feb 18, 2007 2:01 PM
by russc
SpongeBob wrote:Hey Todd -
A couple of quick ones -
2 Any advantage of going to the higher flow M50/S50 intake, vs the low flow M52/S52 manifold for a turbo setup?
SBSP
Edge Motor Works has some dyno testing with the 2 intakes. The higher flowing intake makes ~10whp more in the 6krpm rangel, but ~12lb-ft less in the 4krpm range. The opposite is true with the lower flowing manifold, more torque low, less hp high.
RussC
Posted: Feb 19, 2007 11:50 PM
by kendogg1
Todd,
Will this fit on an E30 M50??
Posted: Feb 19, 2007 11:52 PM
by T_C_D
kendogg1 wrote:Todd,
Will this fit on an E30 M50??
Yes, it should. We have a car to test fit it on shortly.
Posted: Feb 20, 2007 3:42 PM
by rundatrack
gol10dr1 wrote:rundatrack wrote:gol10dr1 wrote:stock pistons or stock compression? my friend ulysses ran 33 psi with only a low compression headgasket and head studs but obviously that was on race gas. this was also on a chip tune. he later stepped it up to a tec3r and threw a rod on a 35 psi run. it was actually the rod bearing so the rod itself didn't even fail. i imagine it is a little bit less for the s5x motors as the rods are not nearly as beefy as the m5x motors and i can't speak for the toughness of the pistons.
I dont think that would last long..
ulysses' car actually lasted a while considering the abuse.....he drove it on the street quite a bit and it suvived many 30+psi runs at the track.......when it finally shit the bed, it was after multiple dyno runs the same day with 35 psi and a semi aggressive tune on the tec3r.
Lucky fellow that man Ulysses..
I have been told that stock internals can last with 400 rwhp but not for a long period of time
Words coming from a very very reputable swedish source...
But god bless him on doing it
