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It’s 2020 there’s zero reasons to be running chips anymore
Hey man! I enjoyed my car for a decade with stock chips... and now I'm finally on A-Tune. It's great... this is what all you advanced guys must have felt like in the 90s hahaha!!
I'd be leery of simply plugging in someone else's admittedly aggressive ignition timing map and assuming it's OK. These are all old cars by now, and have possibly had one or more valve jobs or head gasket replacements, and if your cylinder head has been shaved, then the static compression ratio is slightly higher. Add in other potential factors such as carbon buildup, mismatched fuel injectors, or a bad tankful of gas, and you have a recipe for detonation on your hands.
Ideally the ignition timing map should be tuned on a dyno while listening for knock.
It seems like even the rouge basemap is way higher than the vems basemap.
Or is rouge with the static timing also?
Everyone says the 944 loves high ignition but be careful is all i say.
VEMS basemap is done mostly having US 91octane in mind. There are several ones to choose from and everyone is free to adjust it as they feel like but as always it is best to have the tune done by someone who knows it.
It seems like even the rouge basemap is way higher than the vems basemap.
Or is rouge with the static timing also?
Everyone says the 944 loves high ignition but be careful is all i say.
high ignition advance values are always indesirable as its effectively negative horsepower.
you have to run lots of advance on these old things because of the terrible combustion chamber and big bore.
but with a given octane and AFR more PSI means less timing...
It seems like even the rouge basemap is way higher than the vems basemap.
Or is rouge with the static timing also?
Everyone says the 944 loves high ignition but be careful is all i say.
M-tune is set wicked conservative too, I think tuners do this as they are making a product that needs to work on all 944’s regardless of condition, so they go easy not knowing the mechanical condition of the car it’s on... I was able to add a ton of timing to my m-tune. This is my latest ignition map, car loves it, 93 octane 22psi
M-tune is set wicked conservative too, I think tuners do this as they are making a product that needs to work on all 944’s regardless of condition, so they go easy not knowing the mechanical condition of the car it’s on... I was able to add a ton of timing to my m-tune. This is my latest ignition map, car loves it, 93 octane 22psi
wasn't it you that had problems with headlift? maybe due too much ignition and stock headstuds?
What's is the indication of head lift? Coolant spitting out? Seems once you have head lift, HG sealing will not be possible?
Mike G.
People use that term all the time to mean coolant is getting past the gasket into the cylinder (not external). Lots of ways a gasket can fail though. I suspect as often as not, the real problem is that the top of the motor gets too hot and creates local hot spots that over-expand the block and head, which then over-squish the gasket. Then when things cool off, you end up with one or more thin spots in the fire-ring of the HG, which ends up leaking. It's a hard theory to prove, but I have saved some old "blown" head gaskets that look fine, but when you mic the fire-ring there are spots were it is noticeably thinner...
So you're saying the headgasket is still good? (Sorry, had to.)
Tangentially related, this channel on YouTube has been posting some of their premium videos that you usually have to pay for as freebies due to the virus and they put out one the other day on head sealing, if nothing else it's a good way to kill some time and who doesn't like listening to a Kiwi explain stuff?
The head gasket was good the block broke
Did not get hot was at 1/4 temp and oil temp was 180 this block had some imperfections in it when it was built but honed out.
Oh man... Can you talk to LR about it? Is there any kind of warranty? I would be super p!ssed if I had a motor built and it failed because of a bad block. Money back please!
04-19-2020, 06:08 PM
