MERCEDES 190E
03-17-2011, 03:26 AM
#1
0.0 BAR
Thread Starter
Join Date: Mar 2011
Posts: 21
MERCEDES 190E
Good Day to you all
I own a 1993 Mercedes 190e 2.0l 8v with k e jetronic and a 4 speed automatic gearbox.
points to consider
- i do not plan on changing the engine for a larger displacement one
- i do not plan on changing the gearbox coz i just had it overhauled and it runs smoother than my mums brand new c180 cgi.
- even though my mum owns a new merc, doesnt mean im a spoilt rich kid. we work hard for our money here in south africa and we like to make cents
. i plan on doing this project in stages so i can work it into my budget comfortably.
this is what i am planning on doing. any advice or suggestions from somebody that has experience with this vehicle and injection system will be greatly appreciated.
HEAD
- port and flow the head
- valves and springs to suit the new head design
- a nice high lifting aftermarket cam
that should give me enough power till i add the turbo to the mix.
INJECTION
- 4 x injectors from 560SEC
- stick 2 of the existing injectors into the fuel rail ends
- fuel distributor from 300e
- so i will have 6 injectors in total
do i need to swap anything else to support this? ie fuel pump, eha valve from 300e?
TURBO
- custom manifold for t25/t28 turbo, will the turbo manifold from a gti golf fit on my block?
- t25/t28 turbo with internal wastegate
- intercooler, i plan on running the intake pipe to my existing airbox to save cost of fabricating a new one. it also has the vacuum fuel pressure regulator in it to save making a new one.
- dump/ bov valve
- oil cooler, i plan on running the return line through the turbo to prevent drilling a hole in my block and so that cold oil goes to the turbo. will this reduce the overall efficiency of the oil cooler?
i also plan on ceramic coating the exhaust manifold and intake manifold. heat sheilding the turbo and air filter.
will let you guys know how it goes.
please offer suggestions if you have any that are worth considering.
please bear in mind that im not a drag racer. just want some nice pwer and to own a nicely setup little 190e
I own a 1993 Mercedes 190e 2.0l 8v with k e jetronic and a 4 speed automatic gearbox.
points to consider
- i do not plan on changing the engine for a larger displacement one
- i do not plan on changing the gearbox coz i just had it overhauled and it runs smoother than my mums brand new c180 cgi.
- even though my mum owns a new merc, doesnt mean im a spoilt rich kid. we work hard for our money here in south africa and we like to make cents
. i plan on doing this project in stages so i can work it into my budget comfortably.this is what i am planning on doing. any advice or suggestions from somebody that has experience with this vehicle and injection system will be greatly appreciated.
HEAD
- port and flow the head
- valves and springs to suit the new head design
- a nice high lifting aftermarket cam
that should give me enough power till i add the turbo to the mix.
INJECTION
- 4 x injectors from 560SEC
- stick 2 of the existing injectors into the fuel rail ends
- fuel distributor from 300e
- so i will have 6 injectors in total
do i need to swap anything else to support this? ie fuel pump, eha valve from 300e?
TURBO
- custom manifold for t25/t28 turbo, will the turbo manifold from a gti golf fit on my block?
- t25/t28 turbo with internal wastegate
- intercooler, i plan on running the intake pipe to my existing airbox to save cost of fabricating a new one. it also has the vacuum fuel pressure regulator in it to save making a new one.
- dump/ bov valve
- oil cooler, i plan on running the return line through the turbo to prevent drilling a hole in my block and so that cold oil goes to the turbo. will this reduce the overall efficiency of the oil cooler?
i also plan on ceramic coating the exhaust manifold and intake manifold. heat sheilding the turbo and air filter.
will let you guys know how it goes.
please offer suggestions if you have any that are worth considering.
please bear in mind that im not a drag racer. just want some nice pwer and to own a nicely setup little 190e
03-17-2011, 08:59 AM
#2
1.5 BAR
Join Date: Oct 2009
Location: CHICAGO
Posts: 935
if i remember correctly. its been a while since i worked on porsche's jettronic system. the jet tronic system uses the plate inside the intake to regulate fuel based on air flow. since your planning on boosting this system the jet tronic system will not work or it will be very limited. you will have to build a modern fuel injection system. theres a company out there that sells the screw in injector bungs that replace the jettronics mechanical injectors with bosch style injectors. you will need to wire the system, add fuel rails, add a fuel pump, add a fuel pressure regulator and lastly add a megasquirt ecm to control it all. this is a lot of work just for the fuel system but it will pay off when you mash the throttle.
03-22-2011, 07:26 AM
#4
0.0 BAR
Thread Starter
Join Date: Mar 2011
Posts: 21
dats my mum boet, my mother!! the lady who gave birth to me.
ok i have done some further research. the t25 is wastegated at 7psi and my distributor allows for a 8 degree retard. my standard compression is 9.6:1. do i need to lower the compression any more for this low boost?
the standard fuel system should be fine for such low boost pressure if i adjust the fuel pressure via the lambda tower and run an octane booster.
any opinions?
ok i have done some further research. the t25 is wastegated at 7psi and my distributor allows for a 8 degree retard. my standard compression is 9.6:1. do i need to lower the compression any more for this low boost?
the standard fuel system should be fine for such low boost pressure if i adjust the fuel pressure via the lambda tower and run an octane booster.
any opinions?
03-23-2011, 03:09 AM
#9
0.0 BAR
Thread Starter
Join Date: Mar 2011
Posts: 21
my car runs on 95 octane lead replacement petrol. i have read somewhere that octane booster with methanol in them damage fuel pump internals. is this true? i have also heard of guys mixing their own octane booster by mixing 3parts diesel(750ml) , 2parts paraffin(kerosene)500ml and 1 part methylated spirit(undyed)250ml and putting in 250ml in a 55l tank. how safe is this?
the turbo that i am getting is wastegated at 7 psi and can operate at 12 psi unwastegated.
would it be safe to just up the fuel pressure at 7 psi boost and
retard timing 3 degrees, up fuel a bit more and use octane booster for when i have it unwastegated?
sorry for all the questions. just exploring the possibilities
the turbo that i am getting is wastegated at 7 psi and can operate at 12 psi unwastegated.
would it be safe to just up the fuel pressure at 7 psi boost and
retard timing 3 degrees, up fuel a bit more and use octane booster for when i have it unwastegated?
sorry for all the questions. just exploring the possibilities
03-23-2011, 11:10 AM
#10
1.5 BAR
Join Date: Oct 2009
Location: CHICAGO
Posts: 935
i am unsure about the fuel mixes. we have different fuels here in the us but i cant imagine mixing your own fuel can be safe.
as far as the fuel pressure increase. the higher the fuel pressure the less volume the pump flows. so keep that in consideration. the more timing retard you give it the less power you will make. 3 degrees timing retard on only 7 psi is way too much and you will lose power.
as far as the fuel pressure increase. the higher the fuel pressure the less volume the pump flows. so keep that in consideration. the more timing retard you give it the less power you will make. 3 degrees timing retard on only 7 psi is way too much and you will lose power.
