supercharged 5.0 true fire 98 explorer sport

[4pointslow]

Engine

That's a beautiful cross hatch there!
Looking good!

 

[vroomzoomboom]

i have also found a 7 1/4 crank pulley from a 94-95 mustang for sale that i will also grab (it was made at asp, and the asking price is cheaper then asp), but still nobody can answer what will happen if i dont under drive the water pump, alt, and power steering.

 

[4pointslow]

not under driving

I will give it a try,
Premature bearing failure and extra parasitic horsepower loss.

 

[vroomzoomboom]

thing is, if i want more boost, i will need a larger crank pulley. hope its worth it.

 

[4pointslow]

Pulleys

Does anyone make bigger pulleys for the accessories on the 5.0 to slow them back down?
You could always see if any of them fail(accessory bearings) and then just replace that pulley if there is one available for it.
With superchargers there is information on maximum rpm but try to find that information on a water pump or alternator. That information is probably not available.
In a hypothetical situation where one was using a 7 inch crank pulley and a 2 inch alternator pulley, with a maximum RPM of 6500 you would have the alternator spinning at 22,750 rpm's.

The formula is Drive over driven or crank pulley divided by other pulley. That gives you the ratio and you then times your max engine RPM by that ratio to give you driven accessory ratio.

7 / 2 = 3.5
3.5 * 6500 rpm = 22,750

With a 5.8 inch crank pulley and 2 inch alternator you would have
5.8 / 2 = 2.9
2.9 * 6500 = 18,850 rpm's

Just throw in your actual pulleys sizes and maximum engine RPM to see what your accessory pulley RPM's would be.

The unanswered question is how many RPM's can the accessories handle.
As for the parasitic horse power loss, the amount of boost (and power gained from it) would out weigh that so it would still be a gain but more could be had from putting larger pulleys on the accessories.
Fuel mileage would be affected too, but who cares about that.

 

[vroomzoomboom]

well i just pulled the trigger on the pulley. i think what i am going to do is put it all together with the smaller crank pulley to start and see what boost i get. if its too low, then i will put the bigger one on. i keep forgetting that the meth kit will bump it up a bit as well.

 

[CDW6212R]

The 94/95 Mustangs used similar accessories to the Explorers, so I'd bet the rpm limits are the same. Check on the Corral forum and others to see if the larger crank pulley caused them any trouble.

There are larger pulleys to slow down the alternator, but the rest of ours may be hard to find something bigger. The cost of the 8-rib version of some pulleys like the alternator may be the same as the 6-rib, so try to figure out first if you have enough boost without slippage with the parts you've got.

 

[4pointslow]

pulleys

There are a lot of higher reving 302's and 347's out there so the accessories may just hold up to the faster pulley rpm's anyway.

 

[vroomzoomboom]

today dono did a BIG favor for me, and drove down the the u.s./canada boarder for me and picked these up for me



thanks [MENTION=17822]Turdle[/MENTION], they look great as always!
even bigger thanks to [MENTION=102869]Dono[/MENTION] for getting them for me (he got some static at the boarder from the money hungry guards, and the more i think about even i get pissed off at it, and i wasnt even there!). jon, i think don was eying up the timing chain cover when we pulled it out of the box lol.

also in there was my crank pulley i found on corral.net for almost half the cost of what it would have been to get one made. its a 7 1/4 pulley from a 94-95 mustang made from asp. i dont even think the guy had it bolted on. so we will see how much boost i can make with this. its funny, its about a inch bigger then the pulley that was on the 347. a inch doesnt sound like much, until you compare them....



so now i wait for the block to come back from the machine shop. and now that i have these here, that wait is going to be a long wait!

 

[CDW6212R]

Great new parts, and Jon does excellent work. Stay warm up there with the storm coming through.

 

[vroomzoomboom]

Stay warm up there with the storm coming through.

warm? the snow is melting! i drove evil to dons place to pick that stuff up, and i almost didnt want to take it because i didnt want it to get splattered with road grime.

 

[Dono]

Were livin the life up here in south central Canada right now.
Its super warm, with next to no snow.
Every week we go, that's hopefully 1 week less of possible brutality.

I have to say, the timing cover you gave me looks awesome (Not Turdle awesome, but awesome) I picked up some of that Duplicolor high heat dark Ford blue, and will paint er up. This will save me a boatload of time on assembly before pulling my motor.

Beautiful job on the powdercoating .

Evil looked super clean tonight. Nice and sparkly.

 

[vroomzoomboom]

Its home its home!!!!!! ......sorta
the shop called me today, and told me the short block was ready for me to come get, and now has a clean bill o' health.





so i have it at my buddy's place and the cam will be degreed in to tomorrow. i can then start putting it back together in the next few days. who knows, if i am lucky, i may be able to have it in by the end of feb, middle of march.
the machine shop owner did give me this little piece of info on how much your compression increases with boost. i am damn glad i have a meth kit for this thing as well....

 

[Dono]

So, at 15lbs boost your compression is actively around 20, assuming everything is 100% as far the cylinders filling.

Have a look at this thread:
http://www.theturboforums.com/threads/374508-what-size-of-a-turbine-did-you-use

From what I can tell, if you go with 15lbs boost, you will surely split your block. I'm super excited to see how she runs.

 

[4pointslow]

back

Glad you got it back and everything is straightened out! Can't wait for more pics as it goes together!

 

[vroomzoomboom]

we got the cam degreed in today. its not spot on, but its off by .5 of a degree so i dont really think i can complain about that. thanks to my buddy kurt for that. i would have been lost trying to do that.



so we brought it back to my place and unloaded it. i was going to start on it tomorrow (because its 240 am right now) but because i am having a hard time sleeping (i kinda think this thing is subconsciously stressed me out for some reason) i walked out to the gas chamber cleaned all the head bolts off, put the motor on the stand started putting the heads on.
speaking of cleaning bolts, a friendly little tip for those who are going to be putting a motor together in the near future (and you know who you are ). a while back one of our old mods (SVO) put on his facebook page a picture of why you should run a tap into the treads before putting any bolts in that need to be torqued. well, i fallowed suit by doing the same thing, even though the block was tanked.



glad i did. you dont know what kinda crap may have been left behind.

with that done, the bolts lubed onward with the heads





i was going to start putting the lifters in when i realized i didnt have any oil to soak them in (and i have to figure out what way to instal them because they do have some small oil holes) i figured i would put the oil pump, shaft, and pick up in when....



someone was to lazy to walk in the house to get the bolt torque specs for the oil pump......day over!
i will have to get a new one in the morning, some oil and start again tomorrow.

 

[ZWilson07]

i was going to start putting the lifters in when i realized i didnt have any oil to soak them in (and i have to figure out what way to instal them because they do have some small oil holes) i figured i would put the oil pump, shaft, and pick up in when....

someone was to lazy to walk in the house to get the bolt torque specs for the oil pump......day over!
i will have to get a new one in the morning, some oil and start again tomorrow.

OUCH!

Looks like you are at least taking it alright. I'd probably want to cry after going through all that but I guess it is bound to happen when doing these types of things sooner or later.

 

[Dono]

That's ok Tim, small setback. I have a new pump in box if you need it.

 

[Turdle]

Supposed to have a gasket between the pickup and oil pump anyway--

 

[vroomzoomboom]

Supposed to have a gasket between the pickup and oil pump anyway--

thats what silicons for! it even works great for head gaskets to! this is a budget build