liquidtension
05-29-2007, 12:57 PM
Let us make a thread about forcely inducting the euro S50B30/B32.
This is some stuff i gathered
Anybody with any data,concepts,and real-life experiences please do not hesitate to post.
Some issues that come up:
----------------------------
I've been doing some recent research, apparently some people claim for ~500-600bhp we will need to change the pistons,rods, and work around the stock headgasket because it can not take over 0.9bar of boost. (some solutions comprise of machining the head or block by removing a couple mm's around the surface of the cylinder walls and installing a copper wire there to have a boost-applicable seal.
Many others are having luck just lowering compression via spacers (Erik @ BavariaCars said he can supply one for ~$250) and nothing else.
Proper turbo:
---------------
According to theory, @ 20psi the GT30R and GT35R are both out of the best efficiency island, GT40R would be ideal. T66 would also be good.
Apparently a T66(non ball-bearing) will give full boost of 18psi @ 5200rpm and make ~500whp.
Precision's PT68 journal bearing turbo can support 680hp and spools pretty fast. It costs ~$950.
Theory aside, apparently Mr.Blonde has had good luck with the GT30R, and GT35R on the euro s50 making massive power and spool times of ~3800rpm and recommends them. They cost around $1300.
EFI:
------
SMT-6 and other MAF signal altering piggybacks won't work on the S50B32, they have a limit and the ECU will notice and fix things. Also you will not be able to alter fueling and ignition timing independently.
Many are recommending POWERMOD (found at Erik @ bavariacars.com), it allows you to adjust fueling and timing independently, and has no effect on VANOS EWS and other operations. It costs ~$1100.
MS should be able to work, could use a wasted spark setup with 3 GM coils.
But the vanos would have to be removed. I'm still unsure whether we can trick the ECU into thinking everything is stock and let it run the VANOS by emulating sensors such as replacing the fuel injectors with resistors.
Exhaust Manifold:
------------------
Apparently the e36 325i and US spec M3 manifolds will fit, however they have smaller ports and you'll need to enlarge them which isnt a big deal really. So US-spec turbo manifolds can be used on the euro-spec S50's.
Any comments, corrections, and additional info, greatly appreciated and welcomed!
i will include a PM i received from a member of this board which was very encouraging:buttrock:
"Hi
Here in S.A. we either had the s50b30 or s50b32 so we have done all our work on it by make it or break.
I have a s/c b32, on our dyno it makes 430whp, a stocker on the same dyno makes 260 average. I run a spacer plate, 1mm i think, with 2 head gaskets to lower compresion. Vortech V1 T Trim Blower, intercooler, water meth spray at 1.1bar boost(16psi) onb pump unleaded 95 oct. head and sub are stock. Slight mod on the head as the height changes. Stock head bolts and everything else. Believe it or not occasionally i run around a 80whp nitrous single fogger as well. Dynoed at 510whp at 6500, being a centrifugal blower power peak should be around 550whp at 7600rpm. Calculated back to engine add 100hp to drive the blower plus maybe 80hp drivetrain puts me at around 730crank hp. Thier are about 20 S50b32's supercharged here in S.A., about 5 run with nos. The only failures we've had is ring lans letting go but very seldom. Happened once to me about 10000km ago, could have been detonation or piston fatigue. I wuldn't put this on the forum as not many guys will believe that that figure could be possible on a totally stock motor.
Lastly all our supers run on unichip piggyback, my car runs on two, 1 running the 6 500cc's in stock rail with the timing at +-50% which can be mapped seperately and a second chip running two 500cc's on the charge pipe which feeds above 5500rpm were the s/c really ramps up on power. On pump gas i run 6deg advance above stock timing with fuel ratio's around 11.7. The vanos runs as standard.
This is the reason that i will run the unichip with my current project (Turbo mcoupe, S50b32). My new turbo motor will be fully built though.
My dyno might be unknown to you but a stock s50b32 is rated at 321hp, less 20% max for drivetrain leaves you with around 260whp, just to give you a reference. This engine is strong."
*end of PM*
please help complete this guide..
This is some stuff i gathered
Anybody with any data,concepts,and real-life experiences please do not hesitate to post.
Some issues that come up:
----------------------------
I've been doing some recent research, apparently some people claim for ~500-600bhp we will need to change the pistons,rods, and work around the stock headgasket because it can not take over 0.9bar of boost. (some solutions comprise of machining the head or block by removing a couple mm's around the surface of the cylinder walls and installing a copper wire there to have a boost-applicable seal.
Many others are having luck just lowering compression via spacers (Erik @ BavariaCars said he can supply one for ~$250) and nothing else.
Proper turbo:
---------------
According to theory, @ 20psi the GT30R and GT35R are both out of the best efficiency island, GT40R would be ideal. T66 would also be good.
Apparently a T66(non ball-bearing) will give full boost of 18psi @ 5200rpm and make ~500whp.
Precision's PT68 journal bearing turbo can support 680hp and spools pretty fast. It costs ~$950.
Theory aside, apparently Mr.Blonde has had good luck with the GT30R, and GT35R on the euro s50 making massive power and spool times of ~3800rpm and recommends them. They cost around $1300.
EFI:
------
SMT-6 and other MAF signal altering piggybacks won't work on the S50B32, they have a limit and the ECU will notice and fix things. Also you will not be able to alter fueling and ignition timing independently.
Many are recommending POWERMOD (found at Erik @ bavariacars.com), it allows you to adjust fueling and timing independently, and has no effect on VANOS EWS and other operations. It costs ~$1100.
MS should be able to work, could use a wasted spark setup with 3 GM coils.
But the vanos would have to be removed. I'm still unsure whether we can trick the ECU into thinking everything is stock and let it run the VANOS by emulating sensors such as replacing the fuel injectors with resistors.
Exhaust Manifold:
------------------
Apparently the e36 325i and US spec M3 manifolds will fit, however they have smaller ports and you'll need to enlarge them which isnt a big deal really. So US-spec turbo manifolds can be used on the euro-spec S50's.
Any comments, corrections, and additional info, greatly appreciated and welcomed!
i will include a PM i received from a member of this board which was very encouraging:buttrock:
"Hi
Here in S.A. we either had the s50b30 or s50b32 so we have done all our work on it by make it or break.
I have a s/c b32, on our dyno it makes 430whp, a stocker on the same dyno makes 260 average. I run a spacer plate, 1mm i think, with 2 head gaskets to lower compresion. Vortech V1 T Trim Blower, intercooler, water meth spray at 1.1bar boost(16psi) onb pump unleaded 95 oct. head and sub are stock. Slight mod on the head as the height changes. Stock head bolts and everything else. Believe it or not occasionally i run around a 80whp nitrous single fogger as well. Dynoed at 510whp at 6500, being a centrifugal blower power peak should be around 550whp at 7600rpm. Calculated back to engine add 100hp to drive the blower plus maybe 80hp drivetrain puts me at around 730crank hp. Thier are about 20 S50b32's supercharged here in S.A., about 5 run with nos. The only failures we've had is ring lans letting go but very seldom. Happened once to me about 10000km ago, could have been detonation or piston fatigue. I wuldn't put this on the forum as not many guys will believe that that figure could be possible on a totally stock motor.
Lastly all our supers run on unichip piggyback, my car runs on two, 1 running the 6 500cc's in stock rail with the timing at +-50% which can be mapped seperately and a second chip running two 500cc's on the charge pipe which feeds above 5500rpm were the s/c really ramps up on power. On pump gas i run 6deg advance above stock timing with fuel ratio's around 11.7. The vanos runs as standard.
This is the reason that i will run the unichip with my current project (Turbo mcoupe, S50b32). My new turbo motor will be fully built though.
My dyno might be unknown to you but a stock s50b32 is rated at 321hp, less 20% max for drivetrain leaves you with around 260whp, just to give you a reference. This engine is strong."
*end of PM*
please help complete this guide..