Add a Rad for cooling..

[SRT10VENOMOUS]

What do we lose ?? 40HP with the heat??? and when do these losses begin??? the tstat and elctric fans bring us to 170 ?? from 200?? if we ran cooler than that would it make any diff?? and does that tstat and fan keep us at 170 or does the temp still get up to 200 + when racing etc....

well back in the day first truck of mine was a toyota 4 banger.. so i pulled the 4 banger and droped in a built 350 tons of work on making it fit anyway in the end i could only fit in a 3 core rad infront of the rad support and still only had a 1/4 inch clearence between the rad and the crank , running dual electric fans it would still boil over in 20 min of driving .. sooo the fix was add a second rad with electric fans ... i went and bought some rad hose in 12 foot lengths and mounted a rad under the bed , and well my temp droped in half and stayed that way racing or whatever.. just wondering if that would be a good fix for this heat problem ...


so if we had a custom rad made bigger or added a rad would that help us keep that 40 hp??

 

[hunter_angler]

I still don't think running 200 degree coolant temps is the real problem. I think the engine needs to heat up sufficiently to get and keep oil temps where they should be.

The real issue, only indirectly related, is intake air temps. The effort should be on maintaining a denser intake charge. You are probably cooling yours now with nitrous. Methanol is another option. It would be great if someone came up with an aftermarket composite intake less prone to heat sink. This is an advantage GM Gen III's enjoy.

Just my $.02.

 

[mauiSRT/10]

I still don't think running 200 degree coolant temps is the real problem. I think the engine needs to heat up sufficiently to get and keep oil temps where they should be.

The real issue, only indirectly related, is intake air temps. The effort should be on maintaining a denser intake charge. You are probably cooling yours now with nitrous. Methanol is another option. It would be great if someone came up with an aftermarket composite intake less prone to heat sink. This is an advantage GM Gen III's enjoy.

Just my $.02.

Makes a lot of sense to me. Nice post dude.

patrick

 

[v8eater]

There is such a thing as over-cooling an engine. Not only to prevent the oil from sludging up and/or becoming emulsified with moisture. The fuel also needs to reach a temperature where it can evaporate quickly. Next time you're behind a stinky chugger, remember that it's safe to assume the dude probably pulled out his T-Stat and the engine hasn't warmed up properly for years...

Besides, this truck comes with a plenty big radiator as is. For cooler running there are some ECM program changes and T-Stats available. Though, for California, stock is fine...:dontknow:

I agree on the intake air temp. There's still a threshold that shouldn't be crossed, but, reduced heat = increased air density meaning more air/fuel through the intake without major hardware changes.

Then again, the stock intake is already CAI...

 

[bigike]

But it pulls from a tiny hole in the inner fender well.

I want to look into upgrading the electrical system to remove the hydraulic fan. You lose alot more power converting fluid power in the mechanical work than you to electrical power..

And heat soak is a bitch.

 

[v8eater]

You lose alot more power converting fluid power in the mechanical work than you to electrical power..

I would argue that more power is wasted radiating heat from the electric coils than is being sapped via hydraulic friction.

Plus, an electric fan with the same profile as the hydraulic would never move as much air and one that would be strong enough would be too thick. To solve the clearance issue I think you'd have to mount it as a pusher which would create more potential heat sources under the hood.

Really, I think Dodge got it right in configuration and any adjustments can be made in tuning. Replacing the T-Stat and adjusting fan "clutch" threshold in the ECM is plenty to make up to 40 deg. differences.

 

[nycstev]

There is such a thing as over-cooling an engine. Not only to prevent the oil from sludging up and/or becoming emulsified with moisture. The fuel also needs to reach a temperature where it can evaporate quickly. Next time you're behind a stinky chugger, remember that it's safe to assume the dude probably pulled out his T-Stat and the engine hasn't warmed up properly for years...

Besides, this truck comes with a plenty big radiator as is. For cooler running there are some ECM program changes and T-Stats available. Though, for California, stock is fine...:dontknow:

I agree on the intake air temp. There's still a threshold that shouldn't be crossed, but, reduced heat = increased air density meaning more air/fuel through the intake without major hardware changes.

Then again, the stock intake is already CAI...

I recogognize the women in your avatar? Is that Black sabbath?

 

[nycstev]

I still don't think running 200 degree coolant temps is the real problem. I think the engine needs to heat up sufficiently to get and keep oil temps where they should be.

The real issue, only indirectly related, is intake air temps. The effort should be on maintaining a denser intake charge. You are probably cooling yours now with nitrous. Methanol is another option. It would be great if someone came up with an aftermarket composite intake less prone to heat sink. This is an advantage GM Gen III's enjoy.

Just my $.02.

I brought up the same point awhile back. Some of the aftermarket CAI are made of metal!!! People had mentioned a HP loss after switching. Our stock CAI system IS rubber and Composite. Good observation

 

[hunter_angler]

I am also talking about the actual intake manifold. A molded composite setup a la GM would be a lot less prone to heat soak, IMHO. We wouldn't have to be so concerned about coolant and underhood temps.

If I am off track, let me know. I am surprised no one in the Viper world has designed one. You would think someone like Hennessey would and charge $10K for it...

 

[NBT]

so if we had a custom rad made bigger or added a rad would that help us keep that 40 hp??

Already in the works....

 

[RatMotor]

How's this for a cooler running intake manifold. So pretty, but where is the throttle body?

 

[v8eater]

I recogognize the women in your avatar? Is that Black sabbath?

Yep, scanned right off the worn-out 12" album sleeve...:rock: I did it after discovering that my ani-gif shifter show was too big.

I am also talking about the actual intake manifold. A molded composite setup a la GM would be a lot less prone to heat soak, IMHO. We wouldn't have to be so concerned about coolant and underhood temps.

Has anyone considered JetHot coating? Wouldn't be as effective but it sounds fun...

 

[rottenronnie]

Yep, scanned right off the worn-out 12" album sleeve...:rock: I did it after discovering that my ani-gif shifter show was too big.

Has anyone considered JetHot coating? Wouldn't be as effective but it sounds fun...

Their first album released June 1st, 1970 in the U.S.
(If anyone cares I bought it brand new-The sticker shows $3.55)