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Old 11-30-2009, 08:09 PM   #1
DOHC_tuner
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Info on upgrading my radiator

I have a OLDSMOBILE Alero N-body with a built 2.4L motor. Now I installed a decked 086 head off a Quad 4 LG0 thus I increased the hell out of the compression.

She runs fine but still needs a tune. But I noticed she gets hot due to the added compression I wanted to upgrade my radiator to help aid in the cooling process.

What are some good brands to upgrade to with an N-body?
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Old 11-30-2009, 09:29 PM   #2
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Where are you getting this reading? Scan tool or the cluster?
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Old 12-01-2009, 03:39 AM   #3
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hmmmm im pretty sure the turbo guys are fine with the stock radiator. maybe sometihng is wrong (ie you mentioned you're tune isn't great, that could do it)
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Old 12-01-2009, 06:45 AM   #4
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When I first started it I was letting it idle and even took a drive down the street. I was watching the temp. gauge on the cluster.

Yeah actually I have yet to tune it at all with the new modifications. I have HPtuners but have yet to explore it....so a tune can solve heating issues too?

Last edited by DOHC_tuner; 12-01-2009 at 06:48 AM.
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Old 12-01-2009, 11:29 PM   #5
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I highly doubt you are truly having heat issues. You won't see that much of a thermal increase just from a bump in compression. It will take a lot more than that, and especially with a smaller motor.

My advice would be start learning how to use that tuner ASAP. Read the temps from that and see how hot it's actually getting. Change to a cooler thermostat if needed and program the fans to kick on earlier. Dial in your fuel and ignition timing as that can have an effect on how hot it runs. After that your best best would be to add an oil cooler. I know the V6 cars had a different radiator than the 4cyl's, but I don't know if they were actually any bigger or what you'd have to do to use one. There are no aftermarket alternatives though. If you want anything bigger than that you have to have it custom made.
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Old 12-02-2009, 02:14 AM   #6
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wouldnt running too lean cause heat issues?
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Old 12-02-2009, 06:01 PM   #7
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Running lean will cause an increase in heat, however increasing the compression ratio won't affect the required A/F mix. Bore and stroke have not changed so the same air charge is required as before, Its just squeezed into a smaller space on the compression stroke.

If the increase in compression caused a head gasket failure that'd be a different story.
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Old 12-03-2009, 02:24 PM   #8
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Quote:
Originally Posted by AaronGTR View Post
I highly doubt you are truly having heat issues. You won't see that much of a thermal increase just from a bump in compression. It will take a lot more than that, and especially with a smaller motor.

My advice would be start learning how to use that tuner ASAP. Read the temps from that and see how hot it's actually getting. Change to a cooler thermostat if needed and program the fans to kick on earlier. Dial in your fuel and ignition timing as that can have an effect on how hot it runs. After that your best best would be to add an oil cooler. I know the V6 cars had a different radiator than the 4cyl's, but I don't know if they were actually any bigger or what you'd have to do to use one. There are no aftermarket alternatives though. If you want anything bigger than that you have to have it custom made.
same radiators.. relocated plumbing in/out goodies.
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Old 12-03-2009, 02:25 PM   #9
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Quote:
Originally Posted by DOHC_tuner View Post
When I first started it I was letting it idle and even took a drive down the street. I was watching the temp. gauge on the cluster.

Yeah actually I have yet to tune it at all with the new modifications. I have HPtuners but have yet to explore it....so a tune can solve heating issues too?
If you're running hot you have an issue. I've sat with my car in an hour of freeway traffic in the middle of a Las Vegas summer, and the car didn't beg for mercy.
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