How Much Loss from Leaving the Heater on??

[67-03 RIP]

ricer math this >>> The Z28 ran consistant 13.6's until the heater was left on...then it ran a 14.1. That's why I wondered if that could have affected my ET at all. I was told by other people at the track that it does.

You didn't happen to just have a bad 60ft or something did you? Maybe the heater was just a coincidence....

Ron

[Shirl]

no, it was a new best 60' of 1.672 [img]smile.gif[/img]

[AZ3.8Camaro]

Originally posted by Shirl:
no, it was a new best 60' of 1.672 [img]smile.gif[/img]

I don't need to be giving you advice here shirl, but I noticed when I had a full bottle, I would run a bad 60' the first time or so. The next time, the bottle had a little less pressure, it didn't hit quite as hard and I got a better 60', I ran the same exact time however. I think it was from the bottle being a little lower... Dunno.
Just a thought...

[98GREENGLOW]

This is kinda out there...But on a SC car would there be any more drag on the belt and not quite as well a response to the blower from another accessorie being operated?

Im not even sure if the heater being turned on has anything to do with the belt, but if so that could maybe be possible?

[AZ3.8Camaro]

Heater does not put drag on the belt. It is powered by the water pump which is already spinning and an electric fan. No compressor=no loss of power.

[phoenix64]

The heater cycles the AC compressor to keep the bearings lubricated during the winter months. So it could have an effect. But it sould dis-engage at WOT.

[looking4knowledge]

well it doesnt take a genious to figure out that most likely why he ran a better et at first was because usually as the night goes on some cars get slower, no need for the bi*** slap smiley, thats uncalled for

[jamie]

did you have the heater setting on defrost? coming through the vents to the windshield? that will put drag on the belt.

[Shirl]

posted by lookingrealhardforknowledge:
well it doesnt take a genious to figure out that most likely why he ran a better et at first was because usually as the night goes on some cars get slower, no need for the bi*** slap smiley, thats uncalled for


Ummm, no it wasn't night and the car didn't get slower, it got faster after that run... please don't make any more sarcastic useless assumptions. Thanks.

[Shirl]

posted by Jamie:

did you have the heater setting on defrost? coming through the vents to the windshield? that will put drag on the belt.

I don't think I did, no.. there goes that theory. [img]graemlins/wavey.gif[/img]

[12secondv6]

Originally posted by AZ3.8Camaro:
Heater does not put drag on the belt. It is powered by the water pump which is already spinning and an electric fan. No compressor=no loss of power.

Yup

[Die Ford V8]

you would think that if your heater was on high it would be taking from your batter(WHICH IT DOES) and that taking from your battery would

quote:
--------------------------------------------------------------------------------
Originally posted by AZ3.8Camaro:
Heater does not put drag on the belt. It is powered by the water pump which is already spinning and an electric fan. No compressor=no loss of power.
--------------------------------------------------------------------------------


cause your alternator to drag a little(maybe not noticable, but at least a little) drag on an engine would obviously decrease hp. if your battery is that good then go for it, and it might not make a difference but yeah it seems like it would .

[brandonppr]

I ran test and tune a couple weaks ago and I tried turning the heater on thinking it might make me run faster because the water would be circulating more thus cooling the engine a little more but it did not change my times at all. it ran within .05 the whole day defintly not a .5 diff. My guess would be a fault in the car during that run or maybe traction problem if not before 60ft maybe traction prob. after 60ft. just a thought

[brandonppr]

I think it would make a maybe close to a .5 second difference if you remove the belt which would cause no alt. drag at all + no Power steering or water pump. so how could turning the heat on cause as much loss as all these things?

[wantmorepower]

It could be coincidence but it is not unreasonable to assume that with the heater on you ran just that much cooler and it could have contributed to the improved results. I think that it would take a series of runs with and then without to demonstrate a real relationship between the two. If someone has the track time maybe they should do this and post the results.