How to have fun with your M50!

[Daniel E30]

drool.....very nice.
Reliability for daily drive? or weekend / midnight car?

 

[morpheus5039]

The car's been running for over a month now; had all sorts of vacuum and boost leak issues. Became well acquainted with public transport... I think I finally fixed the last leak between icv and manifold (replace new o-ring) and got boost up to 0.7 bar or so from 3.5k rpm to abt 6krpm in 4th.

I do think the turbine rotor is a bit oversized by 4mm so boost is a little late. Waiting to get clutch replaced first before going to dyno.

Bro what is the size of your current turbine? Stock exhaust or changed? The car still quiet?
I got tons of question, maybe we can meet up some time..?

 

[ramsing]

Bro what is the size of your current turbine? Stock exhaust or changed? The car still quiet?
I got tons of question, maybe we can meet up some time..?

hehehe.... all the above is up to user preference. u can run a turbine according to your requirement. u can still retain the stock exhaust, although it might affect exhaust flow. sky's the limit.

 

[morpheus5039]

hehehe.... all the above is up to user preference. u can run a turbine according to your requirement. u can still retain the stock exhaust, although it might affect exhaust flow. sky's the limit.

i need a reference as a guide ma...but his small turbine already so high at 3.5k...if need full boost at 2.5k without sacrificing too much top end, can use twin turbine set up ka?

maybe i getter older cannot tahan loud exhaust dy...

 

[ramsing]

i need a reference as a guide ma...but his small turbine already so high at 3.5k...if need full boost at 2.5k without sacrificing too much top end, can use twin turbine set up ka?

maybe i getter older cannot tahan loud exhaust dy...

huh? small turbine so high at 3.5k? dont get u la.

aiyo, u want use twin turbine? can, but why confuse your life? hahaha. single is fine. like i said in my previous post, choose your power levels and delivery mode, then get the hardware to suit it. full boost at 2500rpm? sure its possible. my gt35 full boost is at approx 3200rpm, so all depends on what you want.

 

[morpheus5039]

huh? small turbine so high at 3.5k? dont get u la.

aiyo, u want use twin turbine? can, but why confuse your life? hahaha. single is fine. like i said in my previous post, choose your power levels and delivery mode, then get the hardware to suit it. full boost at 2500rpm? sure its possible. my gt35 full boost is at approx 3200rpm, so all depends on what you want.

I mean seems like his full boost come at 3.5k at 0.7bar.

That mean his turbine not small enough? Or because the A/R value not small enough? Aiyo...I need to study first...reading the Garrett info from Honeywell website now...

When got chance to sit your car? Such a long time already....sigh...

 

[ramsing]

err...mine is full boost at approx 3.2k at 1.1bar all depends on your setup and specs. like i said, choose what you want from the car first, then only gather the specs. no point u check the compressor maps etc, if you're not sure what u want. study is good, but too much study will sometimes be worse off. hahahaah.....good luck sir.

u're running m30 3.5?? such a nice engine to boost. stock std engine can go 400whp. sigh.

I mean seems like his full boost come at 3.5k at 0.7bar.

That mean his turbine not small enough? Or because the A/R value not small enough? Aiyo...I need to study first...reading the Garrett info from Honeywell website now...

When got chance to sit your car? Such a long time already....sigh...

 

[fandango]

Morph boost levels depend on load, so boost comes on earlier at taller gearing. There are still some leak issues with my car, so i expect to get full boost at 3k, maybe earlier, on 3rd once that is sorted out. this time its my exhaust manifold that has sprung a leak..:frown:...installer has only 1 jack, so hv to wait...

the 3.5k full boost of 0.7 was on 4th, and with the leak, so i still hv something to look forward to...

i'm using a straight flow back box, a supersprint replica...good flow but a bit boomy...i'm gonna use back the stock muffler later...prefer discreet speed...

u better dont sit ramsing's car la, sure kena poison kau-kau...might be hazardous to yr pocketbook...hehe...

 

[ramsing]

once u get ur leaks sorted out, ur car will be v fun to drive everyday. almost instant tq. will give our diesel boys a good run for their money. then later will wait for the racun to set in so u can upgrade. hahahaha....

Morph boost levels depend on load, so boost comes on earlier at taller gearing. There are still some leak issues with my car, so i expect to get full boost at 3k, maybe earlier, on 3rd once that is sorted out. this time its my exhaust manifold that has sprung a leak..:frown:...installer has only 1 jack, so hv to wait...

the 3.5k full boost of 0.7 was on 4th, and with the leak, so i still hv something to look forward to...

i'm using a straight flow back box, a supersprint replica...good flow but a bit boomy...i'm gonna use back the stock muffler later...prefer discreet speed...

u better dont sit ramsing's car la, sure kena poison kau-kau...might be hazardous to yr pocketbook...hehe...

 

[morpheus5039]

err...mine is full boost at approx 3.2k at 1.1bar all depends on your setup and specs. like i said, choose what you want from the car first, then only gather the specs. no point u check the compressor maps etc, if you're not sure what u want. study is good, but too much study will sometimes be worse off. hahahaah.....good luck sir.

I want to get great torque down low. Especially during hot day with air-con turn on i feel the car like 520i....it sucks...and make me believe that I am not driving a 2.8, somemore still manual. But at night the engine is much more powerful even with AC turn on...

u're running m30 3.5?? such a nice engine to boost. stock std engine can go 400whp. sigh.

No, I am currently running M50TU with M52TU 2.8 stoker kit, OBD1 intake manifold, OBD2 exhaust manifold, stock cam, dyno 225bhp @ 6000rpm, 282Nm @ 5300 rpm. Clutch slipping at around 4500rpm. Not sure what is going wrong with my setup, the peak torque occur at such high rpm...one thing to note is I am currently running stock 413 silver label ECU. Not yet chip to 2.8 spec. Dunno because of this it affects the torque delivery.

If can get 350Nm at 3000 rpm damn good already...

See the torque curve like a hp curve..zzz

Morph boost levels depend on load, so boost comes on earlier at taller gearing. There are still some leak issues with my car, so i expect to get full boost at 3k, maybe earlier, on 3rd once that is sorted out. this time its my exhaust manifold that has sprung a leak..:frown:...installer has only 1 jack, so hv to wait...

the 3.5k full boost of 0.7 was on 4th, and with the leak, so i still hv something to look forward to...

i'm using a straight flow back box, a supersprint replica...good flow but a bit boomy...i'm gonna use back the stock muffler later...prefer discreet speed...

u better dont sit ramsing's car la, sure kena poison kau-kau...might be hazardous to yr pocketbook...hehe...

Oh ya, i neglected the engine load also...

lol~, my pocket always koyak every month becoz of this car...

EDIT: How to test the exhaust flow? Using pressure gauge to measure?

once u get ur leaks sorted out, ur car will be v fun to drive everyday. almost instant tq. will give our diesel boys a good run for their money. then later will wait for the racun to set in so u can upgrade. hahahaha....

 

[pussy]

looks like a correct torque curve after your OBD1 manifold conversion... the old torque curves have been adjusted/moved/missing due to it, and adjusted into HP gains..

but's its good, cos your power(hp) and torque goes up till 5400rpm... smooth all the way..with the M3 cams, you will see a spike !!

er, where is your HP chart ?

 

[ramsing]

morph....dont forget u r driving a na car la. as pussy said, the tq peak is about there. normally hp/tq intersection is at 5450 rpm or thereabouts. if u change to m3 cams, u will only bump it higher, but wont do anything low down. to get 350nm at 3k rpm, u need to either add more displacement, or add boost. hahahaha.

wah, with the money u spent on the stroker etc, u could have prob gone the same way as fandango and got 350nm now, with a turbo. racun racun.....

 

[tneeaik]

hi guys, morph we run similar setup in our car. but i have change the chip to us 3.2 m3 spec (the guy who sold me told me tat), it wouldnt increase much but at low rpm it help abits, n high rpm more willing till 7k. by the way wat final gear u r running?

 

[morpheus5039]

hi guys, morph we run similar setup in our car. but i have change the chip to us 3.2 m3 spec (the guy who sold me told me tat), it wouldnt increase much but at low rpm it help abits, n high rpm more willing till 7k. by the way wat final gear u r running?

Mine rev until 6500rpm then cut. But I notice it is useless after rev past 6000k.
I'm running 3.23 open diff with transmission 5th gear at 1:1, 110km/h around 3k rpm at 5th gear.

morph....dont forget u r driving a na car la. as pussy said, the tq peak is about there. normally hp/tq intersection is at 5450 rpm or thereabouts. if u change to m3 cams, u will only bump it higher, but wont do anything low down. to get 350nm at 3k rpm, u need to either add more displacement, or add boost. hahahaha.

wah, with the money u spent on the stroker etc, u could have prob gone the same way as fandango and got 350nm now, with a turbo. racun racun.....

Stroker i bought 2.XK++ last time. Plus overhaul parts about 1k. Labour same as I did it during the conversion so overhaul together.

Aiyo, high displacement will gain more if later boost ma...hahaha~

No choice I have to do the conversion coz I come from M20B20, I hate the sewing machine.....

Bro Meow lo... if he were selling his stroker kit 11 months ago then i now got S50B30US with me liao...sigh...(and S50 cams...sigh....)

looks like a correct torque curve after your OBD1 manifold conversion... the old torque curves have been adjusted/moved/missing due to it, and adjusted into HP gains..

but's its good, cos your power(hp) and torque goes up till 5400rpm... smooth all the way..with the M3 cams, you will see a spike !!

er, where is your HP chart ?

Bro Meow, but i never convert to OBD1, coz it is originally a OBD1 M50B25TU, and the peak torque occur at 4200rpm according to factory spec wor...adding more stroke will bump up the curve to the right meh?

It's fast after 3k rpm, the pull really comes. But during hot days + A/C on + passenger, driving below 3k rpm feel like driving a M20B20....zzzzz...

What if after adding the M3 cams + chip? (The low end torque will be bump up due to chipped + at the same time upper end increase due to cams?)

HP Chart (this is not on-wheel, it's on flywheel, -15% drivetrain lost about 190rwhp)

 

[ramsing]

morph...if u dun change ur cams, no point u pull higher. if u change to 3.2 cams, get the chip. then u will feel the difference. when i changed my cams from m50 2.5 to s52 3.2, u can really feel the difference. but low rpm, can feel loss of tq. hehe. only after 3k i think u can feel the surge!!

u bought pussy cams ar? no chip? but y u want low down tq? u should get a diesel then. hehehe. NA is all about revving and more revving!!!

 

[morpheus5039]

morph...if u dun change ur cams, no point u pull higher. if u change to 3.2 cams, get the chip. then u will feel the difference. when i changed my cams from m50 2.5 to s52 3.2, u can really feel the difference. but low rpm, can feel loss of tq. hehe. only after 3k i think u can feel the surge!!

u bought pussy cams ar? no chip? but y u want low down tq? u should get a diesel then. hehehe. NA is all about revving and more revving!!!

No la, too late, when i read the post I call him immediately but it was too late. 2k is good price somemore direct fit into M50 no need the cam carrier unlike putting 3.2 cams into M50, few more hundred saved.

Yep i normally shift when reaching 6000rpm. But sometimes clutch slip at 2nd & 3rd gear (not sure my current clutch from 318/325, but i know it isnt 240mm clutch. Thinking of UUC flywheel + M5 clutch combo...thinking of so many things...haiz...where is the money?

I like the flexibility of staying at both high & low rpm mah...
I want torque down low because i wanna save fuel mah... :tomato:

 

[ICEMAN 68]

morp ..ya car is good enough already and it flies too ...and not to forget the exhaust rambling is extremely awsome ....

i think u can makan ramsing's car for "lunch" only as turbo car's can't fly when the outside temp is extremely HOT ....

 

[tneeaik]

Mine rev until 6500rpm then cut. But I notice it is useless after rev past 6000k.
I'm running 3.23 open diff with transmission 5th gear at 1:1, 110km/h around 3k rpm at 5th gear.

wat??? i m running 4.1 (ori auto), 5th gear 120km around 3.2-3.3k. i always wonder it is my final gear is too high???
by the way is me who got the cams from pussy... sorry man..
our car tend to loss huge hp on big hot day. wat i did to minimum the losses, frush the radiator, unplug all the hose n put in water pipe n frush into the engine, there will be many rust water come up from the engine. after tat put 2liter cooler n 3liter water...u r good to go. power n engine sound become solid.

 

[ramsing]

Hehehe....turbo car won't be affected when heat if done right. Can even be tracked continuously with no issues. But morph car is fast, but the driver is faster!!!

morp ..ya car is good enough already and it flies too ...and not to forget the exhaust rambling is extremely awsome ....

i think u can makan ramsing's car for "lunch" only as turbo car's can't fly when the outside temp is extremely HOT ....

 

[morpheus5039]

Mine rev until 6500rpm then cut. But I notice it is useless after rev past 6000k.
I'm running 3.23 open diff with transmission 5th gear at 1:1, 110km/h around 3k rpm at 5th gear.

wat??? i m running 4.1 (ori auto), 5th gear 120km around 3.2-3.3k. i always wonder it is my final gear is too high???
by the way is me who got the cams from pussy... sorry man..
our car tend to loss huge hp on big hot day. wat i did to minimum the losses, frush the radiator, unplug all the hose n put in water pipe n frush into the engine, there will be many rust water come up from the engine. after tat put 2liter cooler n 3liter water...u r good to go. power n engine sound become solid.

I am using manual with direct drive ratio, so rear ratio 3.23. Ur auto final gear is overdrive probably 0.73 that's why match with 4.1 rear axle. I got a 3.91 for sale if u want...let me know. After multiply the ratio ur rpm even lower than me lo.....

But why u want the cams? U often rev Till 6.5k with ur auto gearbox? If later u dun want please let me know first, hahaha

My radiator flush every few months....always did some maintenance which require to remove water hose...lol...