Electric water pump with filled block

[DsmDolney]

Okay so going off what a buddy was asking awhile ago about filling blocks got me really interested in it and got me thinking on maybe doing it to my own block if i go down the road i want to and make the hp i plan on doing. My question basically is if you have a full filled block then that mean all your water jackets/lines/holes everythikng basically is filled correct ? So if all is filled were would there be room to flow coolant through the block ? Do you make passages for coolant to go through then im guessing after the hardblock has hardened. Also what does the electric water pump run off of then and how is it set if you dont have a coolant temp sensor. Ive read on people running it off of ems and or battery. Its all kinda just confusing me i guess you could say. If anyone can sum me up that would be really awsome. Thanks guys

Edit : no more ewp questions figured that all out.

 

[1qkfwd]

Filled blocks are for race cars. You really dont see the need for full filled blocks until you start getting into the 900+ hp range.

 

[DsmDolney]

Thats what im currently building a 800 to 900 hp build. Thats the whole point on why im interested in filling a block. And ive seen alot of people even fill block on street cars or weekend warriors.

 

[donniekak]

With a full fill you modify the head to run a coolant line into, and out of the head, bypassing the block. For what it's worth lots of people only run half fills.

 

[DsmDolney]

Thats what im contemplating on either doing a full fill or just a half fill. For a half fill its just half way up the jackets correct. So coming off of your ewp a line going to the thermostat housing and then coming out the water pump hole back into the ewp correct. ?!?!

 

[bmxfelon420]

With a full fill you modify the head to run a coolant line into, and out of the head, bypassing the block. For what it's worth lots of people only run half fills.

So the block wont get too hot like that? Id assume its only for drag passes if modified that way?

 

[DsmDolney]

Filling a block is yes mostly used for drag cars only. It makes the block a little tougher and gets rid of cylinder flexiblility. And most of the heat of the engine is in the head btw.

 

[GST with PSI]

I don't know why anyone would fill a block on anything but a dedicated 1/4 mile car. Full fills are not for street cars, period. In a half fill scenario, the gain in strength (whatever that may be) would have to be carefully balanced with proper cooling. A proper balance will ensure the longevity of the setup.

I'd venture to say most people who build 900hp cars typically don't care a whole lot about longevity, and definitely aren't driving these type of builds on the street. Filled blocks and electric water pumps go right along with dry sumps, methanol fuel systems and forward facing turbos...And how many builds do you see with this stuff? Fu¢kin none, because it takes a metric ass-ton of time, money and knowledge to make these setups perform; not to mention these aren't street car type mods, get my drift? But, don't let me talk you out of your goals...

https://www.google.com/search?q=dsm filled block&oq=dsm filled block&aqs=chrome.0.69i59j69i57j69i60j69i65j69i64j69i60.4030j0j4&sourceid=chrome&es_sm=0&ie=UTF-8#q=dsm filled block site:www.dsmtuners.com

 

[DsmDolney]

I never said they dont take time and money i know that. And this car doesnt see any street time and wont especially after it gets done with the build. Thats why i have my other street dsm Also obviously having a 900hp car is not going to be reliable at all but filling a block would make it last longer than a non filled block. And you dont need dry sumps or meth fuel to run a half filled block. I also am going to be running a forward facing manifold. This build isnt a 1000 dollar one month project and obviously i know that or else i wouldnt take on the project

 

[GST with PSI]

I know you don't need to run a dry sump, meth etc. with a filled block; you clearly missed my point. Now, what exactly is your question?

A full filled block means just that; a block completely filled, e.g., no water passages left open.

A half filled block is subjective, meaning some fill, but not all the way filled. It's up to the guy filling it to decided how full and how many water passages will get blocked. This is where the proper balance I mentioned earlier comes into play.

I've never filled a block, so I don't claim to know all the specifics. If I were going to fill my block, I'd start by reading the 1,000 other threads in the Google search I linked. Although I've never filled a block, I do understand how it works, and I also know most guys running a filled block run their car a 1/4 mile and shut it down...Rinse and repeat. So, if your intended use for the car is substantially outside of that scope, you may want to reconsider your options. Maybe you should ask guys making 800-900hp who aren't using filled blocks how they are doing it. That seems to be the more logical approach IMO.

 

[DsmDolney]

Ive been searching yes. Cant find really any logical info on the filled blocks so thays why im asking on here. Basically my question is on a full fill how does it flow through the block or does it just go through the head ?? Its a hard decision to see if i want to go a filled or half filled or non fill at all. I mean yea if im going to be pushing that much hp maybe i shouldnt spend the money on filling a block considering its going to be breaking every 2 passes. But if i can make a block last longer that would be nice if you get whatvim saying. None of anything is going to be cheap. Amd that is my plans its my track car so it will be a run down the 1/4 get back to the trailer and shut down. Will not be driven on the streets ever.

 

[familyMAN]

Ive been searching yes. Cant find really any logical info on the filled blocks so thays why im asking on here. Basically my question is on a full fill how does it flow through the block or does it just go through the head ??

If the block's coolant passages are fully filled, coolant can't flow through the block. You have to ditch the stock water pump since the passages behind it will be filled with hard blok or similar. As stated already, you would just run coolant through the head with an electric pump.

A "half fill" would typically fill the bottom of the coolant passages up to the bottom of the water pump's passages. It's really more like a "one third" fill IMO

 

[Ncik]

if your at the point of running a filled block you wont need a water pump because you will or should most likely be running meth or alcohol both of which should keep it cool enough for the 5 mins or so it will be running before you kill it rolling through the traps.


but at the same time like gst with psi said there are quite a few guys making those kind of numbers on unfilled or half fills....

good luck with your build sir. you are into the area of building where its nothing but headaches

 

[pneumo]

Check out JayRacing.com They have a coolant fitting that goes on the head between the cam gears so coolant flows in and out through the head. It's meant to be used with an electric water pump.

The 4G63 is a strong block. Many have run over 700 awhp on unfilled blocks. If you honestly think you'll make more power than that I'd recommend a half fill since the waterjackets in our cars are deep, 130mm/5" and the cylinder walls will flex a little at really high HP. A half fill adds a good amount of support. Use Moroso Hardblok or Devcon. Also be aware that other cars are not so lucky, there's plenty of open deck aluminum blocks out there and they desperately need a stronger block even at the 400hp level. So don't take any advice from one of 'those guys'.

Have you ever heard the saying 'you have to walk before you can run" There are many details that need to be done right before you can make big power. If you build a car that makes 600awhp successfully, then you may learn enough to get up to 900. GL.

 

[DsmDolney]

Made a decision that im not running any fill in my block. Just decided it was pointless for the power ill be making. And im more concerned about the tranny, tcase and all the other driveline stuff. Thansk for the info tho everyone really appreciate it.