ACNCM vs. Nova

[ohmygahitscoby]

Hey guys,

How would you guys rate ACNCM cooling heads against Nova RC? I currently own an ACNCM head for the Picco 26, but I had nothing to compare it to. I was thinking of going Nova also, but I'm not sure. I am unsure of what engine this will be going on, but I just wanted to hear reviews, cooling-wise. Thanks guys!

-Coby

BTW: Is ACNCM actually out? I'm still seeing them on eBay and wasn't sure if they are just selling the rest of their stuff or just on eBay forever now since their site went down.

 

[brad55102]

if i had to choose one, i would pick the Nova,,,
It's a good head.

 

[Rolex]

I used to get only ACNCM heads. When I tried to order one for the Savvy, ACNCM was no longer around. My engine is an F4.6, and Nova was the only one who made one.
They are both equal in quality, but the Nova really shines.

 

[sweetdiesel]

Nova has higher quality than ACNCM. Both will make you run lean if you tune by temp only.

 

[ThunderTiger]

sweetdiesel, how do you work out that you will run lean if you tune by temp alone ?

Using temp alone, the aim is to LOWER your temps which requires a richer mixture, surely ?

As to the nova heads, the temps dropped dramatically on my O.S 30 from the day i fitted a Nova cooling head. it's a good looking cooling head made of strong material with a great finish.

 

[sweetdiesel]

Using temp alone, you would lean your needles to increase the temperature.

Say you were running 240 degrees with the normal head and 220 degrees with the Nova head. To get the engine to run 240 degrees with the Nova head you would have to run a leaner mixture.

The point being is, if you tune by temp alone (which you shouldn't do), you will need to lower your target temperature. Always tune by sound and smoke, then check temps.

 

[Rolex]

Absolutely correct. SD is not the Electric Guru fer nuttin'.
It all has to do with efficiency within a certain temp range. Just like a car engine.

 

[TWOCANE]

I like my Nova pro head on my 427. I have not ran over 220 yet.

 

[ThunderTiger]

AHA !!! you should maybe have made that a little clearer sweet D. I was assuming that the "Goal" was to lower temperatures by fitting the Nova head, which, is what that head is designed to do.

However, with that in mind, and the fact that the nova head allows the engine to run cooler in anycase, why would anyone want to run at a higher temp ? if the engine runs at its desired temp (say 230 deg) with the ORIGINAL manufacturers head fitted, common sense would indicate to me at least, to take a reading of the temp with THE SAME settings once the new head has been fitted, to get a "Baseline" engine temp when at it's "running" temperature. If the engine then runs at 210 deg, then that would be the "Baseline" temp with the new head and the goal for future tuning.

As an aside from this though, From what i have learned from the last 4 1/2 years of running nitro engines, tuning is about THREE things, not just one alone.

1) Sight; the ability to see a visible trail of smoke from the exhaust indicating a mixture that is not too lean

2) Sound; Experience can determine a rich or lean needle setting purely by sound alone when reffering to a specific engine. Further, an experienced ear can tell a "good" glow plug from a "Bad" glow plug just by listening to the "Tune" of the engine and by the "Normal" sound characteristics of said engine (not to mention running characteristics).

3) Heat; The killer of engines. Tuning by heat an engine can be tuned to run cooler OR hotter depending on needle settings.

 

[Rolex]

On a very hot summer's day, when stock heads cause the engine to run too hot with an ideal tune, that's when a better head pays for itself.

I like my Nova pro head on my 427. I have not ran over 220 yet.

Since I installed the Nova head on my 4.6, it's never gone above room temperature.

 

[ThunderTiger]

Since I installed the Nova head on my 4.6, it's never gone above room temperature.

Rolex, would that happen to be because you don't run your engine ??? :

 

[ShotCobra]

Rolex, would that happen to be because you don't run your engine ??? :

lmao:

 

[TWOCANE]

Rolex, would that happen to be because you don't run your engine ??? :

Oh,he went there!Or have you taken it outside to let the wind blow the dust off that it has collected?