01-20-2012, 06:46 AM | ||
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can you see the picture above? i'm using the stock MAF sensor in stock position just run pipe from the supercharger to sensor (to test to see if it works) and it run fine , maybe because boost leak ! but i will reinstall it before the SC because i'm going to run per-compressor water injection as for the dump valve i'm using just one cheap bosch bypass vlave(10$) and for the gear i'm thinking just to connect the vacuum line before SC |
I've got a 4 cyilnder turbo manifold 90% welded up. I am having trouble placing the turbocharger flange and radius plate as pictued with one of my Calling all m111 owners.
Hi all,Just want to share a project that I have been involved with for the past few years. Originally the car started as 2.0 m102 carb engine, later the engine was swapped with later mercedes m111 EFI and after having some problem with the famous mercedes engine wiring harness and ecu I decided to converted to megasquirt. At first a m45 supercharger was fitted with 0.4 bar of boost after that it was converted to turbo with the following specs
-Vehicle : Mercedes w123 -200 1982
-Engine: Stock Mercedes 2.2L m111.960 4-cylinder engine from w124, 10:1 compression. 0.8 bar of boost
-Megasquirt 2 v3.0, custom wiring harness, 785cc/min delphi injectors, VAG COP wasted spark, gm CLT & IAT sensor, Ford TPS, machined 36-1 trigger wheel on the crankpulley, VVT control, bosch PWM idle valve, k&n filter, MAC boost control, launch control, switchable map.
Walbro 255 and bosch fuel pumps, 2 liter fuel surge tank, sytec FPR.
-Forced induction:
(2014- ???): Holset hx30 turbo, log style exhaust manifold, 40mm wastegate with 7psi spring, 3.5 inch downpipe to 3 inch exhaust pipe with two custom mufflers, small fmic. 0.5-0.8 boost.
(2012-2013): Eaton m45 supercharger from later m111 kompressor engine. 0.4 bar boost.
-Driveline and suspension:
Mercedes 4 speed 722.4 automatic transmission, 3.91:1 welded diff, w126 560sel 2nd gen front brake conversion.
on the dyno
Dyno graph
dyno scan:http://i1164.photobucket.com/albums/q564/yazan90/w123/4_zpsqoo2qokm.jpg don't know why it shows 0.9 bar on the paper, but on the datalog it was 0.8 bar
It made 368 nm @3800 rpm and 222 whp @5000 at 0.8bar , it reached the original engine torque which is 220nm@4000 now it's @2400 and the original power with is 150hp@5800 now it's @3200
I'm extremely happy with the result as i know there is more dew to high iat caused by the small intercooler and weather here won't help either .
Also if you look at the graph there is a drop in the torque around 4400 i think that happened because i switch the vvt off at 4300, it will be back on the dyno with more boost and other upgrades.
As for the drive it's really great the torque is instant a bit similar to the supercharge but with more boost, as for the turbo (holset hx30) you won't reach a high hp number but it spool very fast with great sound as plus, in one off the datalog in 4th or 3rd gear i was on full boost at 2700 with 60%tps.
For future upgrade, first a bigger intercooler is a must, and i always wanted to try water injection both pre turbo and after ic. also i was thinking to install the supercharger back to make it a twincharged it should be fairly easy since the new exhaust manifold clear it better than the original one but not sure how i benefit from that with this turbo as it spool fast, maybe with hx35 or hy35 would be more suitable.