Water temp problems

[386lover]

(09-18-2016 )Brock Wrote:  

(09-18-2016 )scottydogtruck Wrote:  What I would do is get down to a gear that allows you to keep the boost down below 20psi...more boost=more fuel=higher EGT's=disaster in the making!!

If it means you crawl up the hill...so be it. Save your engine and your fuel.....


My 2 cents.

I don't agree with this.

I've got a autoshift and a heavy spec truck. this thing shift's how it figures a Cummins aught to be shifted and it goes against everything you guys tell yourselves is normal.

while accelerating this thing takes it to 1800 before next gear, up to 2000 if on a incline in the lower 8 gears.

Downshifts climbing hills by 1500 always and keeps the rpm high.

my get extrenal manifold sensor has never been above 800f, he'll I don't remember the last time it was over 750

Now here's the kicker. I read all day all you guys being super impressed with these motors making a million miles hauling 80k. I've got over a million on mine, had the mandate on the entire million and I haul 140,000lbs so I know a bit about trying to keep temp down.

I get this whole keep your boost down thing that guys on here are taking about but I don't think that should be for long climbs. less boost means the bottom end is doing more of the work which creates more heat and that's why you drop a gear, to get boost back up to cool that damn motor.

It's always been my opinion that if you lug the motor excessively, the exhaust gas doesn't get pushed out as fast. If you watch your pyro while you lug it, the egt's climb excessively vs revving higher.