I have a sleeved low-comp b16 that was just rebuilt about 8K miles ago. I've noticed that the motor heats up very quickly from a dead cold. By quickly I mean within 4-5 min. of driving. However it never passes above operating temperature on the gauge. I've checked both the upper and lower hose and both are tight after the engine is warmed up. Any idea what could be causing this? Thanks in advance.

 

If it's not overheating I don't see what the problem is. My Accord heated up like that when it was stock. Great for those cold winter mornings.

If you are afraid that your temp gauge is wrong or misreading the actual temp. Take your car in and have it hooked up to a scan tool or if you have a tunable EMS/Chipped ECU take it back to your tuner and have them hook it up to read strait from the EMS/ECU.

 

Thanks for the reply. Kinda eases my mind to know yours acted the same way. I'll get my tuner to take a look at it also.