16V euro heads....before-after pics
#1
Race Director
Thread Starter
16V euro heads....before-after pics
So after Sean's unforunate engine failure from extreme overheating we took it apart......the heads didn't look so good with lots of rust corrosion, and light pitting in some areas
I took them to a machine shop recommended by an excellent local 928 mechanic.... Valley Balancing in Ceres CA.....they found 4 exhaust valves were bent from the overheating & the usual replacement parts....
Picked them up today...STUNNING....take a look
I took them to a machine shop recommended by an excellent local 928 mechanic.... Valley Balancing in Ceres CA.....they found 4 exhaust valves were bent from the overheating & the usual replacement parts....
Picked them up today...STUNNING....take a look
#7
Race Director
Thread Starter
all of the valves are 100% stock.....4 exhaust valves came from 928intl and the others were stock 84 euro.....it is quite nice...it appears the "bent" valves were 1-4 and 5-8...interesting that the outside exhaust valves would be the hottest?
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#8
Nordschleife Master
Makes me think what a waste it was spending hours with a razor blade trying to remove all the old gasket etc. on my set. Lots of work and they still look a lot more before than after.
#11
Race Director
Thread Starter
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
#12
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
#13
Nordschleife Master
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.
#14
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.
This is completely untrue.
Proper timing and proper fueling represent night and day differences on stock engines.
#15
Nordschleife Master
I don't think they'd get that pretty with just 0.001" off. And pretty they are.
Controlling knocking is critical on these engines. 91 octane is the best you can get?
Controlling knocking is critical on these engines. 91 octane is the best you can get?