Engine Cooling with Dulcich - Roadkill Extra

In this Roadkill Extra, Dulcich is going to give some of his best tips for engine cooling.
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[@13coyote13]

I thought on Road Kill all you had to do was take the hood off.

[@brownshit1]

Thanks Dulcich, huge fan.

[@arielatom03]

i see what you did there

[@lankey6969]

Who can roll the better joint? Dulcich or Fryburger?

[@Lschevy]

dulcich

[@witnesszer0]

royal from graveyard carz

[@alexcorona]

Lankey Bastard neither of them do weed, David prefers cigars.

[@drbelli]

i know who fries the better burger

[@jitao]

You know the Dultch does it better. Plus, how would you rather chill with.

[@888johnmac]

I was told years ago measure the width between the frame rails then get a radiator that wide & 2 core min, never had a problem... on a personal note if you're too hot get a hair-cut... haha

[@user-neo71665]

My big block nova has a single core. I think the tubes are like 1.5 inch though.

[@888johnmac]

2redneck, yeah I believe crossflow with big chambers each side are the most efficient for heat transfer.. living in the UK 25centigrate/ 70? fahrenheit is hot so we don't have the same problems

[@CerebusTV]

What a great presentation by Steve! He can carry a show by himself.

[@kyfiss9176]

Love this type of video keep these coming

[@miniz33]

Is it me or does it seem like dulcich is about five beers in and winging it?

[@revolutionday1]

Brandon D I ain't mad at him!

[@DiscoFang]

Right so get a big radiator, get a big fan. Got it. Great info.

[@darius2640]

you can tell he lives in a desert, because all he's concerned about is not overheating, over here we got winters you know and sometimes guys (usually old ones though) will block air passage to the rad so that the engine warms up faster

[@user-neo71665]

Cardboard in the truck grill, lol. I've done that before on old POS that didn't have a t-stat in them in the winter.

[@LionWithTheLamb]

On an old suzuki car it ran so cold in the winter the gauge never got past 1/4 and it blew only mediocre heat. The engine just never seemed to get hot. Even after the thermostat was changed it still ran cold. The only thing that would get it to heat up to almost 1/2 way was some cardboard covering up the radiator.

[@nathanantilla5713]

I'm not old and I do exactly that. Before I converted to electric fans and blocked the grille, you could watch the coolant temp drop anytime i took off from a stop. Additionally, blocking the grille actually helps aerodynamics too, improving fuel economy. Diesels benefit most from a grille block, but if you have a gasser with a big radiator (most trucks), you can save a lot of money on fuel by blocking the grille.

[@alexcorona]

darius2640 it's currently 115F where he lives.

[@wyattlewis8671]

darius2640 Yep, keeping warm enough can be a problem, I've got a Dodge with the 5.9 Cummins and it actually will start to cool off while idling if it's more than just a couple degrees below freezing

[@cdangers]

Hey Dulcich. Nice work man. I made reference on a previous video about how much more comfortable in front of the camera you are now and then BAM!! Here you are doing it on your own.

[@Handsome_Christopher]

Thumbs up for Dulcich!! 👍

[@jessep3079]

Steve needs his own show

[@chrismcneill3900]

Reminds me of the 4 core I swapped in to my 289 mustang after it overheated. So over-engineered the cooling I had to block 75% of the radiator in winter to have heat.

[@chrismcneill3900]

ChrisHallett83, nope, we replaced that first. Radiator was old and clogged.

[@tsmartin]

I've got that almost exact set up on my '62 Bonneville ... Deraele fans and an aluminum radiator. I went the extra mile and got some high temp silicone edging to seal the fan shroud to the radiator and also sealed all the gaps between the radiator and core support. Never gets above 180.

[@hothothotmale]

Can we crowd fund a haircut for Dulcich?

[@IvanOoze1990]

cut into a mullet

[@VolV8]

Why crowd fund? There's a left over fan there, just sharpen the blades a little. Good to go :)

[@darius2640]

so he doesn't look like a haggard old lady. lol

[@bryanmayes9234]

hothothotmale he's so pretty tho lol

[@davebrittain9216]

He had it cut short in one of the last videos. Looked way better. This must have been recorded before the cut. Angus is screaming for a haircut too!

[@Nick_1911]

I left with impression that most of Freiburgers orange duster is sitting in Dulcich garage on parts and while waiting to be assembled is being used as spare parts for fixing other -junk- project cars :D

[@rogerramjet5092]

To true that's why it;s a good idea to keep it 1 project at a time. In my limited experience one gets most of the love and the other gets jealous and fights you at every step.

[@LarsonFamilyFarm-LLC]

very good commentary..enjoyed it

[@daddynichol52]

Let Dulcich be Dulcich.

[@jeffparris8387]

You nailed it Dulcich.

[@IMRROcom]

3:38 Spider going to get you, watch your hand

[@jackallen6261]

It just dawned on me who Dulcich looks like! Fess Parker!! Ol' Daniel Boone!

[@InFiD3ViL1]

Man, Dulcich is looking extra hobo lately.

[@Harey0407]

He's just trying to keep up with homeless Dave lol.

[@skipnick]

more proof that looks dont matter!

[@InFiD3ViL1]

He does seem like a hell of a guy. He seems to suffer a little bit of that camera anxiety that Tony Angelo from Hot Rod Garage does.

[@LeakyDiaper]

great job D

[@warummussmeinnameangegeben6502]

MOAR Dulcich!!!

[@garymathews9534]

look in to the elderbrock water pumps ,they have good pump impellers .pulley ratio is also important when it comes to cooling .

[@peep39]

Good job, Dulcich.

[@Myserieden]

Dulcich is so perfectly awkward. I'd be just like him on cam I'm sure. Hell he's probably better than I am on cam. lol He fits perfectly into the Roadkill Extra's. He's a car guy first and foremost and that makes him quite special here.

[@AAYMF]

Thumbs up if you thought the thumbnail was a picture of a stove 😂

[@toddmccarter45]

if roadkill has taught me anything, it's the taking the hood off helps a lot too!!!!

[@robertstevenson1179]

A bit tounge tied there weren't ya buddy... You go there brother Steve...Ha!!

[@GarageBuiltHondas]

What about additives like water wetter for the radiator?

[@VolV8]

So, after this informative clip, can we expect future Roadkill project cars to be all okay? ;)

[@mrrobinson1302]

This dude gets baked!!! I can tell

[@mikelangieri6602]

Steve's eFans are nice, I'd like to see the comparison between a really nice PWM controlled eFan setup and a factory clutch fan setup. I'm betting that at highway speeds both would be OK, but in traffic on a hot day? The eFan has to be the winner.

[@bryanmayes9234]

episode 20 got it 🤘

[@Swermie]

I have a 99 grand am 3.4 V6 and the temp fluctuates from about 200 (middle of the gauge) to like 220 just randomly. I'd like it to stay a little lower than 200 with 200 being the max, but sadly I am in Arizona where all that's around here is HOT air.

[@johnclausen1562]

Watch out for that spider on the radiator!!! You put your hand on it!!!

[@ethanpaintner5494]

Hey how much do you want for the radiator out of the orange duster I have a roller that I am trying to put togeather

[@hellblazer275]

should see the monster rad and fan setups the falcon and Camrey v6 come with not as think but bloody BIG

[@kainculton9229]

Where's that 318 build tho ?

[@martinbernath]

Im a fan

[@atVVV1]

be sure to check out dulcich's other youtube channel where he rants about UFOs and alien abductions

[@michaelrussell146]

ccjkk1 really? how do I find that :)

[@toolman9081]

This is not on the paid subscription. I haven't seen a roadkill extra on MTOD in a couple weeks.

[@BadLogan426]

Right on the money Dulcich,besides lubrication you can never go to far with cooling :-).

[@qwaszxpolkmncvb]

Tried the Motortrend app. That was a waste. Ask for a paid subscription and still attempt to force access to someone's contact list.

[@mrjsmoss]

I remember several times (years ago) of slipping into neutral in traffic, and revving the engine about 1K rpms more to bring down the temp using mechanical fans. What a long way we've come with shrouds and dual electric fans and more efficient radiators. This is a case were bigger truly is better.

[@ddd228]

I agree,totally!!! More rippems' pulls more air.

[@sturgis87]

You can tell Steve Dulcich has Scandinavian roots.

[@AlbinoPredator]

HOONIGAN down at the donut garage are looking for any car that can do a wheelie. You guys should totally take Stubby Bob down and try.

[@workingguy6666]

You're getting better at presenting, Steve.

[@ahunter316]

When you said that more CFM for your fan is always better, aren't there 2 types of fans, static pressure fans and high airflow fans? Or are radiator fans always static pressure? As far as I know, static pressure fans work best when in a high-resistance application, such as forcing air through a radiator, whereas high airflow fans push the maximum amount of air through a low resistance area.

[@ddd228]

BOTH ways are good. One to push,one to pull.

[@mr.kawasaki4156]

pay the man so he can afford a haircut

[@conservativeminuteman9202]

Does this mean no longer taker off the hood?

[@edclark9064]

That's a dodge radiator for sure. Looks like the one in my D100.

[@dieselkev7213]

Thought this was a stove at first glance lmao

[@fangcheck9141]

no running cars ?

[@Ams00560]

Is this website subscription shit actually work?!

[@Muddy.Teabagger]

yep i pay for it as its worth it some good stuff on there.

[@mdoe8]

mmmms Yeah I like it. Roadkill garage itself is worth it.

[@tomrevere9091]

It is worth it, idk why people are complaining so much, they still get free content, plus, cars, high performance parts, and salaries aren't cheap.

[@dielauwen]

Factory Cooling systems are inadequate for continuous full power cooling. As in any large truck of over 1ton capacity you will see a huge radiator for 250hp engine as it has to dissipate the waste heat of an engine producing 250hp continuously,as an example. Whenver you build a high horsepower engine just get the largest radiator you can fit and you stand a chance it will not boilover.

[@scottfromaz7618]

Is that rebar under the top?? Hahahaha

[@SazanD1]

He is so awkward in front of the camera, but i frigging love that he is awkward :D

[@averagejoseph6606]

Isn't this Roadkill?? TAKE OFF THE HOOD!! haha

[@oooppiikkk]

Aluminum block? What of galvanic corrosion

[@victorbitter583]

A functioning thermostat helps too.

[@GlycerinZ]

After I bought my Trans Am, I found out one of the fans weren't working.. motor was dead. No wonder the car was getting so damn hot. Don't forget to periodically check your fans to make sure they're working!

[@jasonbirch1182]

how about a bank of 24 4.75 inch computer fans? 4 high 6 wide. I found them for 5 bucks a piece, they flow 151 cfm a piece are rated at 1.06 amps 1.6 max. plus if one goes the rest are still pumping. $120 for 3600 cfm. you could run half only when needed too.

[@joe35664]

So I seen the video with different fans they used now I want to see them use electric fans next please from spal Vs zirgo vs. Flex a lite, vs. perma cool, vs. EBay fan to the test

[@joe35664]

And derale

[@DJignyte]

Blegh, I hate vehicles that overheat when they idle. I used to have a VP Commodore that did the same thing if it sat for longer than a few minuets, the temp needle would start to rise and that familiar feeling of anxiety would start up "Ooooh shit, this traffic better get a move on soon. I dunno what to do if she get's too hot." Not only that but my Commo also had an issue where the crank position sensor or some shit would come loose and the car wouldn't want to start, so I couldn't shut her down during the wait without risking her not wanting to start again. XD

[@gnashmelllow]

My RX-7 has one electric fan and doesn't even get up to operating temp unless you sit in traffic for 10 minutes with the fan off.

[@MrDeathray117]

I'm surprised they didn't force Fred to rig his garden sprayer to the radiator...

[@robinlaurent6502]

Clear let mention like casual sign journey.

[@fidelcatsro6948]

True cooling systems should be over estimated beyond what engine needs...my air oil cooled 1200cc bike struggles with the in the equatorial tropics, its oil cooler is not sufficient especially when you move in stop go traffic....engine lubeoil longevity also suffers when cooling cant keep up with heat output

[@allenmckinney9533]

I started using factory Concorde dual fans on s10's, blazers and haven't went back to shit clutch fans.

[@livinlite9549]

yep most old hot rods are missing the shroud

[@cobra454tim]

I'm Steve's biggest "fan"

[@kencohagen4967]

So steve, how do I get a project in your shop? I mean it could answer the questions of some of your readers, provide you with material to write about and provide my son and I with something I can teach him, my son being Autistic and me being broke as hell. How do you find your project cars? How do you fund them? Hoe will we share our knowledge with our younger generations? P.S., Enginemasters is my favorite show so far!

[@ldnwholesale8552]

Bigger is not always better in radiators. Factory the thicker radiators were for A/C cars driven in traffic. Combined with large efficient fans. And those radiators are not very effective at high speed as they hinder the air, as do the fans. Which start to impede airflow at about 40k. Look at modern OEM radiators, usually under 30mm thick with for traffic usually very efficient fans, most these days electric. Though big clutch fans are equally efficient. I use modern style thin alloy radiators. More efficient and far lighter. Though have about a 4 year life!

[@theramblingboneheads3953]

6 in the morning roadkill 6 in the morning

[@otakujhp]

Hmm, I thought static pressure was more important for radiator fans than pure CFM.

[@doorguy7744]

I miss the old roadkill

[@william6453]

When I clicked the video I thought it was some hobs

[@simonpersson857]

on next road kill can you buy a volvo

[@jamest4363]

Why hasn't there been a 500 plus cubic inch fe ford build..

[@-DC-]

My wife loves 2 12 inchers, should I be concerned?

[@dylanducker5528]

with radiator fans what you really need to look for is not airflow but static pressure, you can have stupidly high CFM fans that have terrible static pressure that in turn will do a shit job at cooling off your radiator because there is not enough pressure to push the hot air out of the rad.

[@impalaSS65]

hm, where is that static pressure measured? A flow is always over a pressure drop anyways. Is that what you mean?

[@nathanantilla5713]

Unless you're building something really crazy, your rad fan should be pulling, not pushing. Maybe your fans have been doing a shit job because you're trying to push air out the front of the vehicle, against the wind?

[@farrellhamann]

Overheating? I turn on the heater w/fan on high. Cools it down.

[@account4info]

It sucks having to do that when it is a 120 degree day

[@ddd228]

I have done that!!!!!! Better to just ramp up the RPM to draw more air into the radiator.

[@djtgames2637]

In before the motor trend on demand comments

[@MrCabooodle]

just let dulcich's beautiful long locks do what they please

[@terracethornhill]

They make fan shrouds wrong, they should cover the entire radiator, including the tanks, the tanks are a huge amount of surface area that's being wasted by not having air drawn across it.

[@IMRROcom]

That looks like a Mopar Radiator

[@waynep343]

voltage drop testing electric fans is easy.. hand held digital volt meter set to 20 volts DC.. one probe on the positive battery. the other probe on the positive wire as close to the fan motor as you can get. turn the fan on. i would love to see less than 0.5 or half a volt of drop.. more than that and you are going to have reduction in fan speed and fan horsepower.. do the same test with the volt meter lead on the negative battery post and the negative wire to the fan with the fans running.. again less than 0.5 or half a volt of drop would be great.. could you have slightly greater voltage drop to the fans.. yep.. you do want to keep it as low as possible. so the fans spin as fast as possible. hope this helps a few of you.. too thin wires supplying the fan motors burn up more fan motors drawing more current at reduced voltages. .. they also burn up more Engines because of fan failure causing overheating .. this test only takes a few minutes to perform.. how long did it take to prepare and assemble your engine..

[@Lexolo999]

No you don't need a bigger fan. Just take the hood off! Lol

[@williamzoom]

Caitlyn Dulcich has a nice ring to it!

[@SheepInACart]

Bigger is better, thicker is not. If your worried about overheating when stuck in traffic, a large thin radiator will flow more air with the fans than a slightly smaller rad of twice the thickness, even though the thicker rad will have much more surface area and rated capacity. Where thick rads make sense is when you are traveling at high speed and cannot conveniently fit more height or width, or if you have some truly crazy fans that can handle the backpressure.

[@jdmeaux]

Lots of people never realize what a good radiator and fan will do to help an engine. I replaced to stock radiator and fans in my wife's Elantra last year with an aluminum radiator and larger fans. It gets up to temp properly and doesn't overheat in stop-and-go traffic. And the A/C cools better. I guess its from all that air moving through the condenser and radiator. It does get noisier with the fans on at full tilt, but its cooler. JD

[@drbelli]

i wonder, isnt copper a better heat conductor, material?! a copper radiator would be smaller, about the same weight , and stronger(puncture wise)

[@drbelli]

i guess the technology of aluminium tubing and shaping made copper irrelevant then... (for the industry), thx for the full formed explanation you gave . btw, i got a performance radiator some time ago, and the inner tubes were all round, not oval. i reckon oval shaped tubes are more effective, coz air travels inna linear fashion, and thus round tubes would be hotter in the upper walls...

[@timdulan]

Doing better in front of the screen Dulcich!

[@Indianahillclimber]

and you want me to pay for this?

[@capcloud]

I prefer Dulcich without a script.

[@barryfields2964]

All you got to do is that the hood off ever thought of that?

[@itsara187]

👍👍👍

[@hughcasement5443]

He keeps getting better at this.