New rad + ac, overheating ?
#1
New rad + ac, overheating ?
Hey,
Just installed a new Mishimoto rad in my 97 NA, the old stock rad could not hold boosting with ac on I would see temps up to 240F (115C) and then I would turn off the ac.
Even when driving hard with the stock rad and no ac, it would still overheat.
On the trip home with the new rad I noticed that it would still heat up with ac and boosting but much slower, I got up to 212F (100C).
There is still space between the rad and the body, and there is space between the right fan and the rad.
No coolant is missing.
The fans run together.
Fans turn on @ 194F(90C) and off @ 188F(87C).
Ambient @ 86F(30C)
Got IC.
I'm good ?
Thanks
Just installed a new Mishimoto rad in my 97 NA, the old stock rad could not hold boosting with ac on I would see temps up to 240F (115C) and then I would turn off the ac.
Even when driving hard with the stock rad and no ac, it would still overheat.
On the trip home with the new rad I noticed that it would still heat up with ac and boosting but much slower, I got up to 212F (100C).
There is still space between the rad and the body, and there is space between the right fan and the rad.
No coolant is missing.
The fans run together.
Fans turn on @ 194F(90C) and off @ 188F(87C).
Ambient @ 86F(30C)
Got IC.
I'm good ?
Thanks
#8
What Vlad said (assuming that by no shroud you mean that you've removed or cut big, unsealed holes in the air guide/undertray).
More than likely, had you had decent ducting you would have been fine even with the OEM radiator.
Bigger radiator doesn't hurt anything and a reroute does great things to even out engine temperatures and increase water flow to the radiator (at the expense of water flow to the heater core).
My car is 100% OEM cooling system with ducting in like-new condition and a reroute. I'm cool as a cucumber in 100+ -- including idling in traffic with AC and track days. I do turn the wick down to 5psi for track days though.
More than likely, had you had decent ducting you would have been fine even with the OEM radiator.
Bigger radiator doesn't hurt anything and a reroute does great things to even out engine temperatures and increase water flow to the radiator (at the expense of water flow to the heater core).
My car is 100% OEM cooling system with ducting in like-new condition and a reroute. I'm cool as a cucumber in 100+ -- including idling in traffic with AC and track days. I do turn the wick down to 5psi for track days though.
#20
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We need pics, please provide
You list temperatures in C horsepower as wbhp and 95RON for fuel, so I'm guessing you are in Europe. What you call a shroud we may call something else.
If you removed this thing from your car, put it back on:
You list temperatures in C horsepower as wbhp and 95RON for fuel, so I'm guessing you are in Europe. What you call a shroud we may call something else.
If you removed this thing from your car, put it back on: