Do all C4's run on the hot side?

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Jun 25, 2003 | 04:10 PM

#21

black_89_vette

Melting Slicks

Joined: Nov 2000

Posts: 2,469

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From: Winchester Ontario

Re: Do all C4's run on the hot side? (all4c4lt4)

I actually drive with my fans on all the time. Yes, in traffic and slow town speeds, I see 220 + daily, and sometimes up to 230-240 if it's real hot out and I'm not moving much.

Jun 25, 2003 | 04:19 PM

#22

vader86

Team Owner

Joined: Sep 2001

Posts: 62,171

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From: Athens AL

C7 of the Year - Unmodified Finalist 2021

C4 of Year Finalist (performance mods) 2019

Re: Do all C4's run on the hot side? (black_89_vette)

Quote:

My 89 383 runs hot too. On the highway, it runs right at 180. Perfect!! It has a 180 T-stat. But, in town in hot weather at low speeds and idle it can get over 230-240. That, I've heard is somewhat normal, but still a little high for me. I have a custom chip that turns the fan on earlier, and I also hotwired the fans to a toggle switch and have them on all the time in this hot weather. If I ran a 160, would the coolant stay around 160 on the highway?

I think somethin is up with your cooling system. If you have a 180, and the fans are triggered to come on earlier than stock, you shouldnt really be getting up that high. With a 160, she'd run lower, but not at 160.

If youre sure the tstat is opening then maybe you should upgrade the Water Pump or Radiator for that 383. Having the fans running when the car is over 55mph is detrimental to cooling also.

In Ontario, I definitely would not run straight water unless this car is strictly summer-hot weather-only. You could get away with a 60/40 mix though. Water wetter would work best if you ran straight water, but if you still want it, its in the vette parts magazines (Ecklers, MidAmerica).

Jun 25, 2003 | 04:24 PM

#23

Bat Man

Team Owner

Joined: Aug 2000

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Re: Do all C4's run on the hot side? (Steel Blue 91)

Mine likes to stay at 196 and 204 for some reason. But if I get on it, it goes up to 230 then comes back down.

Jun 25, 2003 | 04:45 PM

#24

black_89_vette

Melting Slicks

Joined: Nov 2000

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From: Winchester Ontario

Re: Do all C4's run on the hot side? (vader86)

Quote:

In Ontario, I definitely would not run straight water unless this car is strictly summer-hot weather-only. You could get away with a 60/40 mix though.

I obviously only run it in the summer, but at what temperature is the "danger zone" for running straight water? Maybe I'd run straight water and a bit of antifreeze for it's rust inhibitors and anti-corrosion qualities.

If I ran the straight water deal, I'd change it back to 50/50 before winter storage.

Jun 25, 2003 | 05:09 PM

#25

reallycoolcorvette

Racer

Joined: Apr 2003

Posts: 337

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From: OLD DIRTY BASTARD LIVE AND UNCUT

Re: Do all C4's run on the hot side? (black_89_vette)

sounds like your water pump may be going bad. If it is the oem unit then i'de put in a new one.

Jun 25, 2003 | 05:33 PM

#26

69mako

Race Director

Joined: Jan 2000

Posts: 16,489

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From: USA. Northern Virginia

Re: Do all C4's run on the hot side? (corvettemaster)

Do yourself a BIG! favor and pull out your rad! I did mine this last weekend....flushed it out, scrubbed it down and vacuumed the housing it sits in...I went from 228dgs sitting in trafic in 90dg weather to 201dgs sitting in traffic "with the A/C on full" :eek: :thumbs: :thumbs: :thumbs: What a great change!!!!

On the highway it now sits right on 193 :thumbs: :thumbs:

You will be very suprized at how much crap you find stuck in the fins :eek: :eek:
Larry...cool running LT-1 Larry :steering:

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