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Hmmm... I still don't understand the rational behind this doing. Has a Harley engine got two spark-plugs, so he can replace one? If he is doing cranking- (motored-)Test without combustion only, what is it good for to know TDC in motored operation? No, no, it was a setup thing not a while running th...

If anyone following along has been wanting a V12 308 of their own this car img7017.jpg http://www.exoticcarsofhouston.com/Details/X023499/1978-ferrari-308-gts Is on the market. Just moved from the Huston dealer to an Atlanta dealer who is sorting a few little things before re-listing it. Its an olde...

mck1117 wrote: ↑

Sun Jan 23, 2022 8:43 pm

He didn't drill another hole, just put a sensor in the spark plug hole to test at cranking speed.

which I'm pretty sure gave him a number that is a few degrees before actual TDC...but as long as he's setting adjusting timing on the dyno it will all work out.

Would you please cure my curiosity, why there is no access to the crankshaft of a Harley-engine? Please excuse my stupid question. kr, sepp2gl Its not that there is not access, its that there is no access without pulling the side cover and fitting a degree wheel which is the standard approach but w...

I wrapped the exhaust so hopefully this fixes the heat in the engine bay issue. I'm going to try hosing it down with high temp paint to control the fibers and make it look a little better.

mck1117 wrote: ↑

Thu Jan 20, 2022 7:58 pm

I'm sure the addition of the second plug adds power - I don't doubt that. I doubt whether staggering the firing does anything useful for power.

Yes, I was agreeing with you in a long winded way and suggesting a rewire to remove that feature and make it direct fire of both plugs together

I bet the staggered firing is an emissions thing. I bet you will not be able to detect a power difference between simultaneous firing and staggered firing on a dyno. ...which means you can just wire both coils on each cylinder together, and run it as if it had 8 regular coils. Thanks - this would s...

Engine out to change the leaking head gaskets and take care of a few other things while its out. 20220115_180852-resized-1024.jpg I'm going to wrap the headers to control the heat in the engine bay better and see where that gets me before I look at moving the coils, which is best done engine in anyw...

There is no reason in the world to do that if you have 12 fuel and spark outputs in 1 ecu. That's not what I mean - I just mean having two map/maf/tps and doing independent per-bank fueling on a split-manifold engine. There are two interesting cases, N=1 and N>1, and once it's N>1, N=2 and N=4 are ...

We're actually very little code away from being able to run as "two ECUs", one for each bank. There is no reason in the world to do that if you have 12 fuel and spark outputs in 1 ecu. The OEMs did it for cost, it made no sense to develop an ecu for the small volume the V12s were....way e...

thank's. I agree with the first part. Beneficial will be to check individual cylinders for lean or miss fire conditions and to take some action. perhaps will be cheaper in terms of software and hardware compare to some fancy ION sense, right? EGT isn't a very good tuning tool, it varies for a lot o...

Here's the good news for the day. -It fired right back up -God I just love hearing this thing run -With the new o-rings on the injector at the intake and all the TB springs installed (I had pulled off 8 to lighten the load on the actuator trying to stay under 5A to use the ECU driver...didn't work) ...

Ciao! Like always the truth is somewhere in-between. What is the intent for your 12-channel pressure aquisition? Why are you doing it? kr, sepp2gl Same main reason you're doing 4 channel I'm guessing. I use it to to show me what needs adjustment. I have a display that shows % error relative to the ...

Did you tell your left cylinder-bank to stop smoking? What was the reason? Cylinder-head gasket? Thanks. yes its got head gasket problems....I'll update the thread this weekend once I know if a re-torque fixed it or I need to pull the engine anmd replace them. Teething issue I'm just kind of chuckl...

sepp2gl wrote: ↑

Thu Jan 06, 2022 7:25 pm

ONLY 4?

I guess 4 is plenty when you ONLY have 4 cylinders

Seriously though, very nice. It is good to see another sole who believes every cylinder needs its own MAP sensor.

Mine is here:
https://www.youtube.com/watch?v=k7vevXzqf6k

sepp2gl wrote: ↑

Thu Jan 06, 2022 4:52 pm

Purpose1: MAP-based ignition, synching the carbs by steppers based on 4(!) MAP-sensors, Idle-speed control with stepper

I would love to only need 4

I feel bad for you having TUV so, I guess given the choice of TUV looking over my shoulder or 12 MAP sensors I'll take the 12 MAPs

Ok, enough whining for 1 thread....please just add an external solid state relay and get on with it already.... hell.... I'll send you 1 if it will stop the whining!


seriously though, looking forward to see it it work...so add an external driver already

On v12 engines with two separate intake manifolds how unevenly would two banks run? Why? Do we require throttle bodies synchronization to even out the banks or do we just adjust fuel/ignition trims? How much of a big deal is that, how was it address back in the days of mechanical throttle bodies? I...

Got new spark plugs, got four cans of starting fluid, charged the battery. Cranking fuel 27mg. Swapped 6 spark plugs because lazy. Did not touch starting fluid. It has started 10 our of 10 attempts, with one of the starts slooooowly building RPM from 250 to high idle. 1/2 the plugs?.....did both ba...

Those say "BMW Bosch" and take major force to unscrew. Maybe made in 1998? :) Also too much fuel. New plugs ordered, I am not beating this dead horse until those arrive. Good call, those won't spark. I have a bead-blast cabinet I use but if you have air harbor freight has a plug cleaner w...

AndreyB wrote: ↑

Sun Dec 19, 2021 6:48 pm

Some crunchy wiring?

The wire itself is still good as its high temp insolated (tefzel) but the sheathing not so much. Way too close to the headers......

Engine has cooled down and unhooked to wall battery charger might have drained battery a bit, one way or another very few puffs again :( On same tune same unit. https://rusefi.com/online/view.php?log=512 Have you looked at the spark plugs? They can foul pretty quick, I've had to clean mine 6 or 8 t...

Before pulolng the engine I'm trying a head re-torque thewre3 was quite a bit of movement so fingerer crossed, just need new cam cover gaskets to put it back together. I will need to relocate the coils is seems....5 of the connector lock clips just snapped off and the heatshrink and black wrap are n...

sadly I think i was over optimistic and the Christmas miracle was ether.  When I have clean plugs and start with ether all the cylinders run...and burn the waterless coolant and I see a little blue smoke.  when the cylinders cut out the coolant vaporizes in the hot pipe and I see a cloud of white sm...

that is idling at about 1500 full hot btw. The throttles are effectively fully closed and that got me to about 2200? so I pulled out some timing, its at 13 degrees now. Once I get a bit more confident I'll pull out a bit more timing and try to get it to 1000 or so...but honestly just having it idle ...

k-seal chrstmas miracle....a mostly reseal head gasket

Ok so..... Fuel pressure issue tracked down to a solid state relay, replaced with mechanical relay and problem solved Wednesday I tried the cylinder MAP correction....it was outputting gibberish Thursdays tired again, no...its error doubling not error correcting Friday, its running pretty good with ...

so 6:2:1 is the go I am not looking to gain any power, I need to stay within "reasonable change of cool sound result" instead of "if you X or Y you would not have cool sound for sure" They PROBABLY already are 6:2:1 from BMW but regardless, sure, keep the factory stuff up front ...

ETB vs VVT: ETB on this engine are active just during starting and in error case. Normally, the ETBs are fully open and VVT controls the motor. In the event of an error, VVT is moved to a specific position and control is transferred to the ETBs. So that the motor can continue to run, albeit (perhap...

AndreyB wrote: ↑

Tue Dec 07, 2021 5:47 pm

OMG I have plates!

What next?

Have you ever seen the show "pimp my ride"?


....don't do anything you saw there

but street racing would be fine use of a V12 bmw