Probee's GT2871R LCR

[probee]

	Engine Speed	Mass Air Flow	Throttle Valve Angle	Ignition		Timing Retardation	Timing Retardation	Timing Retardation	Timing Retardation
TIME	(G28)	(G70)		Timing Angle	TIME	Cylinder 1	Cylinder 2	Cylinder 3	Cylinder 4
STAMP	 /min	 g/s	 %	 °BTDC	STAMP	°KW	°KW	°KW	°KW
497.72	4760	200.02	100	23.3	497.42	0	0	0	0
498.34	5120	231.04	100	15	498.02	0	0	0	0
498.93	5440	268.70	100	14.3	498.63	0	0	0	0
499.53	5840	296.12	100	16.5	499.23	0	0	0	0
500.14	6160	312.92	100	21.8	499.83	0	0	0	0
500.74	6520	322.37	100	18.8	500.44	0	0	0	0
501.35	6840	328.31	100	23.3	501.04	0	0	0	0
501.95	7200	324.54	100	20.3	501.65	0	0	0	0
502.56	7480	330.25	100	27	502.26	0	0	0	0
503.16	7760	327.69	100	27	502.87	0	0	0	0

one of mine for comparison

hehe thats just awesome!!!

 

[DPJ]

Got ya. So the less CF the more you can advance the timing. Again.. dont see why you cant run 9 timeing aaron? Strange.. So how does the engine detect Knock?

There are two knock sensors bolted to the block just below the inlet manifold. They are like microphones and are tuned to the frequency of the ping from knock.

Their bolts need to be torqued accurately for them to work correctly.

 

[Skorchio]

Very nice wilko! thats alot of air!!

Thanks Dave. Amazing how much you two know, and im amazed at how amazing these engine are... I never knew how complex they where.

How much is it Aaron? i was sposed to post £20 to greg.. i need to do that.. maybe 2morro..

 

[DPJ]

Had that on a dyno recently, John?

 

[Wilko]

nope. I need to get all the air the turbos moving into the engine first. Leaks around the intake mani gasket and throttle body. Too much happening in my life to get round to it at the mo

 

[DPJ]

nope. I need to get all the air the turbos moving into the engine first. Leaks around the intake mani gasket and throttle body. Too much happening in my life to get round to it at the mo

Did you fix the injector seal leaks - or can't you tell?

 

[probee]

nope. I need to get all the air the turbos moving into the engine first. Leaks around the intake mani gasket and throttle body. Too much happening in my life to get round to it at the mo

you must be expecting some impressive figures. im not surprised you have leaks with that much air... i dont think i will ever go that far but i really would love to.

what have you run on the rollers so far?

 

[Wilko]

Dave
Injectors weren't leaking as it turned out. TB and intake mani gaskets + a holed vac pipe.
With all these it did 384 on awesomes rollers (363whp)

 

[probee]

i think that would put a smile on my face too.. With that much power it doesnt matter if a few horses leak out here and there

well done John, thats an awesome engine.

 

[Skorchio]

Im guessing you have your internals uprated? Have you done anything to your gearbox? I may have to have a read of your thread

 

[Wilko]

threw a rod in my orginal engine with a lot less power, and broke 2 o2j boxes.
now on cupra r 6 speed, which is holding up well, but isn't subjected to huge torque, so should be fine.
More power comes from maintaining torque higher up thr revs. the peaks tend to be lower than with smaller turbos that make torque lower.
currently only running about 320lbft peak

 

[DPJ]

Dave
Injectors weren't leaking as it turned out. TB and intake mani gaskets + a holed vac pipe.
With all these it did 384 on awesomes rollers (363whp)

That would make sense.
Got to be a bhp or so more than that now....

 

[probee]

to throw a spanner in the works, whilst looking through my toolbox i found the end of my old MAF housing. now Dave you wouldnt really be able to measure this from the outside but the internal bore (where the sensor is) is 72.2mm

im assuming this is what they would have worked to rather than the restrictions at both ends

 

[Wilko]

whats the diameter where the sensor sits though. The other end is 69.8ish from memory.

 

[DPJ]

whats the diameter where the sensor sits though. The other end is 69.8ish from memory.

Yep, I measured the other end.

 

[probee]

whats the diameter where the sensor sits though. The other end is 69.8ish from memory.

that is the diameter of where the sensor sits... you are looking from the inside out in that picture

 

[Wilko]

Just been to look at an old 75mm od maf I have lieing around, and there's a step behind that screen, where it steps down to a smaller (69.8mm) diameter, which is where the sensor sits.

You can see the step in your photo if you look carefully

 

[probee]

Thanks for looking John, i dont want to say you are wrong because i only have the ends of the MAF housing here and you are able to look into the housing to see if it steps down again. the step you can see in the photo is on the outside not the inside of the housing ie the stainless mesh you can see is nearest the sensor not the plastic strainer..

from the part i have here it looks like the bore where the sensor sits is 72.2mm but i cant tell if there is another step because i dont have the rest of the housing.

can you get a piccy if its not too much hassle, dont worry if its a real PITA

 

[Wilko]

i'll take a picky later for you

 

[probee]

thanks John