Flat Plane Crank Coyote conversion kit....

[Coconut]

Quick, someone get this and the $10k Borla ITB.

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[Kellys69z]

And...

The crank alone was several thousand.

Here you go. eBay to the rescue

https://www.ebay.com/itm/322200157178

 

[Ugly John]

It does warn you not to be fooled...

Steve's Crazy Garage...what could go wrong?

Sub'd for the "will this fit in an ecoboost?" post

Ya know - if two people go in for a couple to put on their V6's, they'd have enough spare parts for an ecoboost....

 

[BmacIL]

Do they include all the dampers and uprated component thicknesses to deal with the shaking forces?

This is lol

 

[zackmd1]

Do they include all the dampers and uprated component thicknesses to deal with the shaking forces?

This is lol

The kit apparently includes a new harmonic balancer and stronger rods and pistons. I am assuming the displacement decrease is also to help deal with the increased harmonics of the FPC. If this kit is even real that is..... :lol:

 

[olsonjus]

I contacted ATI about a damper for a home built Voodoo. They said they have something in the works that they have partnered with ford to develop.

 

[1320']

That is a very good point. To my knowledge a true 5 liter engine is around 306CID. The old pushrod 302 was commonly referred to as the 5.0 in later years because they just rounded up from the 4.9 or so liters the engine truly was. So unless the coyote has the same thing happening where in 300CID is being rounded up to 5.0 then the math is wrong somewhere....

305.5 IIRC is 5.0L

 

[TexasRebel]

302 - 308 ci can all be considered 5.0L

 

[PJR202]

so....

is there a dyno chart or anything? i'm sure one of these guys on the forum with seemingly endless funds will pick this thing up.

 

[VTECSAUCE]

Man, while this sounds cool on paper (or the internet), I wouldn't even think about doing this.

On another note, they mention that their flat crank engine comes in at 292 CID which [they say] is 8 CID less than a normal Coyote. Aren't our engines 302 CID which would mean 10 CID less? What am I missing?

If they can't even get the displacement right...

Could have the same bore with a shorter stroke. :shrug:

 

[Voodooo]

Not worth it

 

[HISSMAN]

IM, cams, great E85 tune, OPG kit, and call it a day. Save $$$$

 

[olaosunt]

MMR offers a built GT 350 block with FP crank for $5k.
Rated for 1000rwhp.
I considered this as replacement engine for one of my GT's at one point and my tuner said he could adjust the tune for the different firing order using the stock ECU.

 

[Optimum Performance]

Flat Plane Cranks do not create power. This was a marketing exercise by Ford that worked very well. Cross plane is the standard in the most forms of racing. This comes up every few (20) years but by then cylinder head / camshaft / ECU's have proven it not viable. Please understand this was the final FU to some Italian competitors before most of you were born. Ford has always had the best talent, lately they have had really good management.

 

[TexasRebel]

To be fair and unbiased, flat-plane crankshafts have a lower moment of inertia than a comparable cross plane crankshaft. The lack of counterweights is a huge deal when it comes to putting power to the ground. The trade-off comes in a second order imbalance that the cross plane crankshafts remove. Think back to the hammer-blow on the rails generated by the massive counterweights used to prevent fore/aft surging of steam locomotives. Steam locomotives were essentially an inline, cross plane, 90-degree, 4-cylinder, 2-stroke motor with a steam generator attached to provide power.

The cross plane crankshaft was to keep the engine from locking up with both crank throws bottomed out, but by keeping the reciprocating masses out of phase, they did not cancel out. Had the crankshaft been flat-plane, the counterweights would be completely unnecessary, EXCEPT, the reciprocating masses are not on a common axis which induces a twist around a skew axis which is perpendicular to the plane that the cylinder axes lie on, centered between them.

This happens in the Voodoo just the same. Each bank of the Voodoo has, believe it or not, a similar stroke pattern and firing order as the Model T. Afterall, the Voodoo is two I4 engines connected 90 degrees apart. If you look at the cylinder pairs, 1-2, 3-4, 5-6, 7-8, each set will balance against it's mate, but it rocks the crankshaft around the main journal to do so.

Nothing is free.

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