Ruthle55

Long tubes and a throttle body with a 172mm cp and a 84mm s/c pulley. I'm sure you're ****e at math and figuring things out as a whole. But i'll let you at least try and figure out why my pulley combo isn't as aggressive as others.

Cams are worthless. I didn't install them. Now go away before your head implodes.

Joncl

So because you didn't install the cams they are worthless lmao you are living up to your name worthless. So basically you have a 178-180mm pulley and 82mm tb with long tubes and CAMS and again only 11.4 lol

Go away worthless you make everything worse. I bet the marbles are trying to escape your cranium about now lol

Ruthle55

Wrong. 11.4 was on the stock s/c pulley, and a 172mm cp.

Joncl

You just say here you had a 172 crank with 84mm sc pulley, long tubes and 82mm and CAMS

You do realize that the 84mm sc pulley is smaller than stock right? Dude go away ow it's just lies and retractions. Worthless what's next you are going to say you ran 11.4 stock lol

Worthless you attack everyone about racing hellcats etc. you can't even remember the lies you write. Go away worthless even the marbles in your head are leaving your cranium. Feces will be moving in that cranium of yours soon can't wait to see what that spews out lol

Ruthle55

I'll just re quote myself because I feel like Im dealing with someone who has Alzheimers.

Joncl

Worthless you are all over the place.

MACEDON

Wow what a thread

I can only do one mod, which mod should I do

split cooling with a hood tank

or get a PLM hxc

seanol

Really depends on what theory you believe in and what your end goal will be.

I went with meth and split my cooling keeping the stock HE. I will get a tank, either trunk or engine bay, and use a KC.

Meth keeps my IAT's well in check and off meth I see about a 20 degree rise in IAT's over ambient. With meth I see ambient or slightly below.

When I have my cooling complete I will start to mod for power.

When I get the KC I will probably make an engine bay tank with the proper pick up point and return. Reason is I don't want to run lines down to trunk and KC really need 2-3 gallons for efficiency per Mr. Kincad.

Aftermarket engine bay tanks I have seen need work before you can use them. The pick up is not in the correct position and can lead to air entering the system.

I split the cooling for two reasons, while I believe that the coolant and engine coolant have minimal mixing I do believe that one will add heat to the other.

Second reason is I want to be able to run water with water wetter, not coolant. Water is the best agent for cooling. If I kept it split I would have to use what is in the engine. Here in Dallas we get hot and humid so that set up works for me.

I think I spent $30 total to split the systems using a BMW reservoir, a pressure relief valve, hose clamps, and plastic fittings.

MACEDON

Did you note the difference in temperatures between stock and split?

seanol

I saw a 5 degree change in temps from 25 degrees average over ambient to 20 degrees. Unfortunately that is OBD2 numbers so I would say that the real answer would be little to none.

I was not looking at recovery before but now I recover with in about two minutes off meth on a third gear pull. This was in the winter with ambient at 50-60 degrees. Since I run meth all the time now I do not really worry about it.

As I stated the reason to split was more to run water only with a surfactant in the supercharger cooling system. I will be switching to a tank and KC so mods were looking forward towards that goal.

AMG_55_cruiser

. Not certain if you’re still on site but is that IAT normal with mods? Just trying to make certain that my IAT are in safe range with new 77 SC pulley and tune and not causing any issues with fuel getting to rear cylinders. Thanks

PieRat

I see 172f when going hard on a race circuit with my mods. I assume that's basically the peak. Probs a 20-25c 75/86f day I cant remember.

AMG_55_cruiser

thanks for response. How many miles on your car/whatvyear?

been rebuilt or still as from factory? My concern is some of the issues I read about on rear cylinders.

PieRat

Um 140k km so like 90k miles I guess..yeah #8 is the concern although while there has been failures and it's the problem cylinder I've been on here for 4 years I think and I dont think its been very common. Stock internals and 2005.

AMG_55_cruiser

thanks for details. Let us know how mods go

SICAMG

Hot engine, hot tune, lean AFR and high rpm normally contributes to failure. Keep the engine cool, fatten up the AFR and keep timing in check with fuel octane and your good.

tw2

It has also been postulated that a lot of the failures may have been due to partially clogged fuel filters and/or dying fuel pumps before it was well established that these were maintenance items. Fuel pressure can drop several psi vs new components. Cylinder 8 just happens to be the most likely to experience lean conditions in those scenarios.

E55amg0220

SICAMG ..... what do you consider a lean AFR?

tw2

I am interested as well. I used to aim for 11.8 AFR for turbocharged cars. Fixed displacement superchargers are less efficient, produce more heat and so a bit richer is never a bad idea, around 11.5.

E55amg0220

Im hittin 11.4 ti 11.6 thriughout rev range an hit round 11.2 at 6200 rpms til redline. Tony said this was good so trust him just checking to see what others think.

tw2

Sounds pretty safe to me. I would be happy with that.

SICAMG

To me.... and it is just my opinion, yes low 11. AFR's are perfect. I even try to dip into the high 10 if it is hot during my runs.
Now....am I leaving power on the table ...YES ! Is the engine going to stay together ? YES !!!
You have to also sort through all the none sense of pulley diameter verse cooling verse how guys do it. You can be very aggressive on a pulley /tune stack if all you do is quick blips getting on the highway and there is only a few seconds of power.
I always setup for long pulls since I enter the 1/2 mile and soon to be 1.5 mile runs. Than your AFR's have to be right on the money.

Exotic-metal55

Headers , big pump and trunk tank. Unless want to just use meth.

E42AMG???

I remember reading once that deleting the intercooler core dropped psi by 4-5 psi don’t know the truth in that. Straight meth for cooling then e85 on top would be killer if that is true.

Fountain35

https://fiinterchillers.com/products/