Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post - SR20DET Redtop overheating when driving more than 20 miles on highway

Nissan2nr22 · 05-07-2013, 04:17 PM

Title pretty much sums it all

Engine is all stock, original.

I drive 15 miles from work to home daily twice and the cars fine, heat gauge is a little below half.

Yesterday I had to drive to Miami, at about 20-30 miles in heat slowly started rising till almost the top.

Obviously I pulled over before it hit the top, cooled the radiator down.

I noticed when I put the car in neutral while going 70-80 on the highway and just cruise the heat QUICKLY RISES after 20+ miles of traveling at 70+ MPH

Heres what friends are telling me:

1) From Previous owner, he said : Redtops arent made to go past 65mph and to be able to do that I'd have to get a bigger turbo and a 6 speed trans.

2) Friend said : It could be the water pump?

3) Mechanic said : You need a better radiator.

Does anyone here know or is familiar with this problem? How did you fix it? Please tell me I really need to be able to travel longer distances.

05-07-2013, 04:17 PM	#1
Nissan2nr22 Nissanaholic! Join Date: Aug 2008 Location: USA Posts: 1,628 Trader Rating: (30)	SR20DET Redtop overheating when driving more than 20 miles on highway Title pretty much sums it all Engine is all stock, original. I drive 15 miles from work to home daily twice and the cars fine, heat gauge is a little below half. Yesterday I had to drive to Miami, at about 20-30 miles in heat slowly started rising till almost the top. Obviously I pulled over before it hit the top, cooled the radiator down. I noticed when I put the car in neutral while going 70-80 on the highway and just cruise the heat QUICKLY RISES after 20+ miles of traveling at 70+ MPH Heres what friends are telling me: 1) From Previous owner, he said : Redtops arent made to go past 65mph and to be able to do that I'd have to get a bigger turbo and a 6 speed trans. 2) Friend said : It could be the water pump? 3) Mechanic said : You need a better radiator. Does anyone here know or is familiar with this problem? How did you fix it? Please tell me I really need to be able to travel longer distances.