Cryo-Treatment

[csvt98]

Hey guys,
Has anyone ever cryo-treated their rotating assembly? I am contemplating a Coyote swap with Boss 302 internals and cryo-treating the Boss internals. I want to be able to hold 1k rwhp one day with this. I know the rods are the weakest point, if the treatment is not strong enough, go forged rods anyway? I do not want to spend a ton on the rotating assembly and I want to keep the swap fairly cheap. (Never happens). Also, would the Boss crank and pistons hold that kind of power? I was reading where some stock Boss 302's were in the 800rwhp range, that was why I was thinking if I did a cryo-treatment on the Boss rotating assembly I could presumably make and hold 1k to the wheels.
Thank you.

 

[redline5.0]

I would be worried about the block at 1k without sleeves.

 

[el jefe 302]

Cheap or reliable, pick one haha.


Most high HP roadrunner motor failures are due to rods, I would run the pistons and crank but put in good rods. IMO. But keep in mind it will only last for so long at that power level using stock components.

RaceRat was around that power number for two racing seasons also doing mile events, I believe she also had a rod failure.(Going off memory)

 

[csvt98]

Alright, I think I may go the aftermarket rod route or keep things down to around 800 to the wheels when the time comes.

 

[BlackMamba3]

No need to worry about the crank. The Boss crank is rated for 1,400HP. As for rods, just go aftermarket now. It'll save you time and money in the long run. And, if you're already upgrading rods, you might as well do the pistons at the same time. If you're wanting 1,000RWHP, get the block sleeved.

Depending on your budget, look at MMR or just order an already built CJ engine from Ford Racing.

 

[Need 04 Wine]

So asked this in another thread to no avail.

Why do the coyote motors need sleeves when the old 4.6's could make a 1k rwhp without?

 

[Dizzyscure1]

So asked this in another thread to no avail.

Why do the coyote motors need sleeves when the old 4.6's could make a 1k rwhp without?

"Where in the HECK have u been? put over a 1000rwhp to a stock block coyote and send me pics when it happens to not enjoy such an act. U need sleeves when pushing over the 850-900ish rwhp range, everyone's know this for years now."

I posted that after u asked. First off ur comparing two different motors man, second the stock sleeves/blocks/water jackets in the coyote just cant hold that kinda power very long if at all. This has been talked about a bunch, I hate to say this but search it a little and u will answer ur "whys" very quickly.

Simply put u want 1000rwhp+ get sleeves period, no other way around it.

 

[prn1972]

So asked this in another thread to no avail.

Why do the coyote motors need sleeves when the old 4.6's could make a 1k rwhp without?

Because the coyote's water jackets are so big. The cylinder will break into the water jacket under high horsepower. Some sleeve them. Other weld or put supports in the water jackets.

Stock

Sleeved

Welded

Supports

Ford Racing Coyote Block

 

[5.0GT]

You can half ass suspension, exhaust and such, not an engine. Do it right, overkill or don't do it at all.

Rotating assembly is less than 2k balanced and rated for 1000hp. How much is the boss internals?

 

[5.0GT]

You can half ass suspension, exhaust and such, not an engine. Do it right, overkill or don't do it at all.

Rotating assembly is less than 2k balanced and rated for 1000hp. How much is the boss internals?

 

[RAZRS EDGE]

You can half ass suspension, exhaust and such, not an engine. Do it right, overkill or don't do it at all.

I have to disagree with you here. Way, way, way too many people turn a blind eye to suspension when building a car. People can make all the HP they want, but if they can not get their car to work with its given power, IMO, it's worthless. If someone is just trying to have a dyno sheet, roll up to a car show/gathering and look pretty then I guess that's their cup of tea.

Suspension/chassis is just as, if not more important than power.

 

[Aaron@JPCRacing]

I have to disagree with you here. Way, way, way too many people turn a blind eye to suspension when building a car. People can make all the HP they want, but if they can not get their car to work with its given power, IMO, it's worthless. If someone is just trying to have a dyno sheet, roll up to a car show/gathering and look pretty then I guess that's their cup of tea.

Suspension/chassis is just as, if not more important than power.

This is why some cars go 10's N/A and some cars go 10's with a blower.

 

[RAZRS EDGE]

This is why some cars go 10's N/A and some cars go 10's with a blower.

 

[five.slow]

I have to disagree with you here. Way, way, way too many people turn a blind eye to suspension when building a car. People can make all the HP they want, but if they can not get their car to work with its given power, IMO, it's worthless. If someone is just trying to have a dyno sheet, roll up to a car show/gathering and look pretty then I guess that's their cup of tea.

Suspension/chassis is just as, if not more important than power.

I think he means in general, not that you can throw on junk and go fast. Suspension is damn important though.

 

[justinsstang]

So what all would you guys use to do a forged motor build the right way to hold 800-900rwhp reliably for 6+ years? I'd that's even possible with that high of power

 

[prn1972]

So what all would you guys use to do a forged motor build the right way to hold 800-900rwhp reliably for 6+ years? I'd that's even possible with that high of power

Darton sleeves, hard anodized Diamond pistons, Manley billet steel rods, all ARP bolts

 

[Need 04 Wine]

"Where in the HECK have u been? put over a 1000rwhp to a stock block coyote and send me pics when it happens to not enjoy such an act. U need sleeves when pushing over the 850-900ish rwhp range, everyone's know this for years now."

I posted that after u asked. First off ur comparing two different motors man, second the stock sleeves/blocks/water jackets in the coyote just cant hold that kinda power very long if at all. This has been talked about a bunch, I hate to say this but search it a little and u will answer ur "whys" very quickly.

Simply put u want 1000rwhp+ get sleeves period, no other way around it.

I have been not interested in Coyotes..Didn't own one didn't care. I def missed your last response.

And did not know the water jacket were so close. Got it now.

Was kinda thinking they used lesser grade materials then what the teksid and other generation 4.6 had.

THX

 

[justinsstang]

Darton sleeves, hard anodized Diamond pistons, Manley billet steel rods, all ARP bolts

What about valve springs, valves, oil pump gears? Any total list of which stuff to get?

 

[prn1972]

What about valve springs, valves, oil pump gears? Any total list of which stuff to get?

Stock valves are fine, definitely get some stronger vavle springs, Comp/PAC/MMR etc., upgrade to TSS/MMR oil pump gears