Full Race's "Gen 2.5" Raptor build

[full-race geoff]

those who are knowledgeable about the coyote world knows they too have weaknesses. The "1-2-3 punch" aka "3-2-1 engine build" is the hot recipe right now: Gen2 coyote heads, Gen3 coyote block, and Gen1 timing chain (thickest/strongest chain for coyotes). Driven by the reality that Gen3 coyote blocks are the strongest (not gen4) combined with Ford raising the price on Gen 2 bare blocks, shortblocks and longblocks.

My ocd brain realized the Gen2.5 EcoBoost 1-2-3 punch is more like: Gen3 block, timing components and crank pulley, Gen2 heads, Gen 1 oil system. We can build the Gen 3 shortblock with Gen 2 heads.. and hopefully the boundary gen1 modded oil pump. That would get us full gen3 timing components, gen3 bottom end, and retain the simple plug-and-play fuel systems engine swap that we get by keeping the gen2 heads and fueling setup. Would need to figure out an AC compressor solve. Slow going, although things are starting to fall into place.

 

[BigTaco]

Geoff,
Have you talked to anyone at Watson Engineering about an oil pan? They have one person that is an artist with this sort of thing. I’m not trying imply that you can do a great job as well, just sharing my thoughts.

Any details regarding the oil cooler you can share? Setrab ?

 

[soliyou]

I added a bit more info on the first page, will begin the chassis writeup tonite



Thanks for the message earlier - 2018 with 100K and original phasers/turbos sounds ripe for this list. Keep in mind I am not a valvetrain engineer (turbos are my thing), with that said here is my understanding and experience:

Timing Chain Guides and Tensioners: These are the critical pieces for reliability on a stock-ish truck. At a bare minimum these updated metal guides and new tensioners should be installed along with the phasers. I have seen the plastic Gen2 timing chain guides fail, with the tensioner piston pushing right through the plastic pad. Below is a photo with the arrow showing the "plastic pad" that the tensioner pushes on. the problem here is because this is made from plastic the tensioner can push through the slots on this guide-pad and cause failure. The metal gen3 part eliminates this possibility

Hey, Thank you so much for for posting this information. You are the first one on the internet to comment on how crappy the Gen 2 lifters are. I have been chasing lifter noise since 40k miles and decided to change them as I am doing the cam phasers now at 75K miles. Here is a video on how they sounded at 40K on snap throttle. Not sure if I am allowed to post links since this is my first post, but will try:

Anyways, I have two questions:
1- The new rocker fingers look significantly different than original ones, are they totally compatible with stock tune, or will need a tune after installation?
2- Why are you recommending only one Gen 3 tensioner and not both? is there an issue in using both Gen 2 tensioner with Gen 3 arms? I can see that the oil feed hole is slightly larger on the Gen 3 tensioner.

Again, thank you for these posts. Great help!!