16V euro heads....before-after pics
#16
Nordschleife Master
The assumption that there is no gain going from an older OEM ecu to a new aftermarket ECU is a fallacy and a false premise. The false premise is that Porsche did everything in their power to eek out as much HP as possible.
This is completely untrue.
Proper timing and proper fueling represent night and day differences on stock engines.
This is completely untrue.
Proper timing and proper fueling represent night and day differences on stock engines.
#17
Race Director
Thread Starter
since its a pure race engine we can get 100 unleaded and 110 leaded......all are available at the track
keep in mind is pure stand alone.....so the fuel spark are adjustable however needed...
keep in mind is pure stand alone.....so the fuel spark are adjustable however needed...
#18
Rennlist Member
290 rwhp is for Ljet and a good exhaust. (like equal length headers) optimizing fuel and spark is pretty easy to do for the narrow range of use of a race car, that's why the gains are not due to aftermarket ecu's, but with with the other changes like valves and port size as well as cams. (see Dennis' engine results) their optimization of fuel and air mixtures and timing resulted in only about 15hp.
well, proof will be on this engine wont it!???
Looks great Brian!
Mark
well, proof will be on this engine wont it!???
Looks great Brian!
Mark
#19
Rennlist Member
The assumption that there is no gain going from an older OEM ecu to a new aftermarket ECU is a fallacy and a false premise. The false premise is that Porsche did everything in their power to eek out as much HP as possible.
This is completely untrue.
Proper timing and proper fueling represent night and day differences on stock engines.
This is completely untrue.
Proper timing and proper fueling represent night and day differences on stock engines.
I think joe and mark got 520rwhp with the stock ecu stuff!
Sounds very optimistic, is this with stock Euro S parts except for the slight shave on the heads?
Normal for 5.0L Euro is about 290 rwhp isn't it with a good exhaust etc. Given the stock brain can tune AFR and timing to pretty much whatever you want, why the assumption a different brain will result in any gain whatsoever? Its not going to change the air flow through the motor.
Normal for 5.0L Euro is about 290 rwhp isn't it with a good exhaust etc. Given the stock brain can tune AFR and timing to pretty much whatever you want, why the assumption a different brain will result in any gain whatsoever? Its not going to change the air flow through the motor.
#20
Rennlist Member
How complicated is building the hydrid engine, 5.0 block with 16V USA or Euro heads?
What is involved? Is it plug / play or are we talking about engine artisan / machinest work?
What is involved? Is it plug / play or are we talking about engine artisan / machinest work?
#22
Rennlist Member
You can but it will work without a fly cut of the pistons ... it just makes it definitely an interference motor. There is a euro 5 litre hybrid here which has no cuts, which I've visually confirmed with an endoscope, and done front end work on to confirm it's interference. It uses standard head gaskets, is a DD and has been tracked.
#24
Rennlist Member
BTW .. I never tire of looking at your avatar ...
#25
Rennlist Member
I've got a Euro that needs rings and a spare 86.5 engine.
Maybe a winter project in-the-making.
Titans of the Aeroman-class avatar, you guys are. Exceptional.
T-Rex, Tasmania. Both can take me to a special place.
Maybe a winter project in-the-making.
Titans of the Aeroman-class avatar, you guys are. Exceptional.
T-Rex, Tasmania. Both can take me to a special place.
#26
Rennlist Member
You can but it will work without a fly cut of the pistons ... it just makes it definitely an interference motor. There is a euro 5 litre hybrid here which has no cuts, which I've visually confirmed with an endoscope, and done front end work on to confirm it's interference. It uses standard head gaskets, is a DD and has been tracked.
pistosn flycut
euro intake mods to adapt to US cold start and microswitches
RRFR
hogging out US Ljet "U" adapter for diameter matching for euro throttle body.
#28
it was a very light shave.....only one thousandth..... With a standard headgasket and the piston cuts it should be right at 11-1.....for the 5.0L euro....this engine will be ran by a full stand alone system VEMS tuned by Colin.... I am optimistic it will be 340whp-torque
#29
Rennlist Member
you can use the machine shop /engine builder in MtView that ive used for many years on all sorts of projects.....Devek used these guys in the beginning.
great for work on any of the 928 components. heads, block (bore refresh or added bore)
great for work on any of the 928 components. heads, block (bore refresh or added bore)
#30
Captain Obvious
Super User
Super User
This is the first time I heard of exhaust valves bending from overheating. Also a first tonhear a 1 thou skimming that removes pitting. I don't think it's even possible to skim a head that little.