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Over the last few months I've been busy on my e30 replacing the stock engine by a completely modified one.

Specs

2.7 S eta stroker 129hp
completely modified 885 325i cilinder head with al new parts
rockers enlightened
block and head skimmed comp ratio now 9.6/1 was 8.5/1
crankshaft, conrods and flywheel balanced an weight out
pistons machined (valve seats)
dbilas 282/272 camshaft and springs
bigger injectors m50
bigger air flow meter (m30)
wiring loom from 325i facelift
ecu modified alpina b3 2.7 setup

The pics then:

next bit

bigger injectors

The wiring work that followed

These 2 had to made a straight fit





with this little plan everything worked out fine







Those 2 wires had to be reconnected for the fuel gauge and rev counter to work

finished engine





In the mean time driving in period has been finished and ecu is modified to next to perfekt ..

Result 204 bhp and 270nm of torque, with an exaust line type hartge 210 bhp will certainly be possible

Regards

very nice work done gerrit!!!!
love topics like these!!!!!

Nice work, but why u didnt get bigger CR? like 10,5:1 ?

misza wrote:Nice work, but why u didnt get bigger CR? like 10,5:1 ?

Because in the near future in my country fuel with ron 98 will not be available any more, ron 95 will and this is only fine with CR from about 9.7 max