Coolant System Pressure vs. RPM - Competition Diesel.Com

Ktown6.0 · 02-14-2013, 08:26 AM

Not really performance related, but need some information.

Are any of you folks running higher than stock RPMs having trouble with aftermarket replacement heater cores?

Replaced one recently in my truck and it let go within a month of use.

I have read here that the rear cylinder gets some crazy pressures from the added heat to the coolant system.

Mods, move to section best fit.

Thanks

Tate · 02-15-2013, 06:19 PM

I've had my 24v up past 4500 rpm and no issues to speak of. My 12v has been to the same level, but it popped a hose off my Espar a month after hitting 4500 rpm, and my heater core popped about a year later. My 12v doesn't see high rpm often, its strictly DD duty. Both of them on stock water pumps.

02-14-2013, 08:26 AM	#1
Ktown6.0 Name: Ktown6.0 Title: I can't remember Status: Not Here Join Date: Jan 2007 Location: Just Outside of Gainesville. Member`s Gallery Posts: 635	Coolant System Pressure vs. RPM Not really performance related, but need some information. Are any of you folks running higher than stock RPMs having trouble with aftermarket replacement heater cores? Replaced one recently in my truck and it let go within a month of use. I have read here that the rear cylinder gets some crazy pressures from the added heat to the coolant system. Mods, move to section best fit. Thanks __________________ Ray B. 1999 Dodge 3500 P-Pump 24v, Parts from and Thanks to: Beans Diesel Mumau Diesel Pure Diesel Power Air Dog Turbo Matt's Diesel Garmon 1986 Jetta Coupe 1.6D, 5spd

02-15-2013, 06:19 PM	#2
Tate Name: Tate Title: What? Status: Not Here Join Date: Nov 2007 Location: Airdrie, Alberta Member`s Gallery Posts: 3,419	I've had my 24v up past 4500 rpm and no issues to speak of. My 12v has been to the same level, but it popped a hose off my Espar a month after hitting 4500 rpm, and my heater core popped about a year later. My 12v doesn't see high rpm often, its strictly DD duty. Both of them on stock water pumps. __________________ '98 3500 2wd, 24v, 5 spd, p-pumped '98 2500 4wd, 12v, 6 spd, VP'd '02 VW Jetta, 5 spd. My p-pump conversion pics