Gen 2 Coyote Timing Job

[GTharmony]

Hi all,


Recently, I have had a metallic noise on my '16 GT at about 2k RPM all the way up to 3500 or so RPM. I pulled the passenger side valve cover off the other weekend and found slack in the timing chain. Crazy to me at only 50k miles but here we are.

I am planning soon to tear the front end off the car and replace all the timing components, as well as some "while I'm in there" modifications. This is the part list that I have put together:

GT350 Timing Chains
MMR HD Upgraded Secondary Chains
MMR Upgraded Secondary Tensioners w/ secondary guides
MMR Billet Secondary Tensioner Bracket
GT500 5.2 Primary Chain Tensioners
MMR Billet Oil Pump Gears
Upgraded Stainless Steel Backing Plate Bolts
High Flow Oil Pump Pickup Tube w/ ARP Bolts
MMR Crankshaft Sprocket
ARP Crankshaft / Balancer Bolt
Valve Cover + Timing Cover Gasket Kit

Skipped out on upgrading guides, just going to order OEM primary guides.
I am also ordering the necessary bolts (primary/secondary tensioner bolts, cam phaser bolts, primary/secondary guide bolts)

Anything I am missing or recommended to do while I am in there that I have not listed?

Thanks for any advice.

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[NightmareMoon]

honestly, I’ Ford timing chain guides.

i’d do some of the GT350 timing parts from Ford Performance and I’d be pretty skeptical of anything from anywhere else going into the timing or oil system.

I know it seems like an “opportunity” to upgrade. BTDT pretty recently, but going back in to replace an aftermaket part and do the bearings while your in there because aftermarker part skiped the quality assurance part of the assembly line and shit the bed is less fun.

theres plenty of good aftermarket parts out there, and a few bad ones, so fewer dice rolls you take on aftermarket engine internals the fewer times you’re going to crap out.

 

[EFI]

ARP Crankshaft / Balancer Bolt

I'd get the stud kit instead of the bolt:

https://coyotedirect.com/products/c...FTjK3C2bDSzGcjWZoGB9AIsWyYPK4_2Lp2-PkqpDzmLbo

 

[GTharmony]

honestly, I’ Ford timing chain guides.

i’d do some of the GT350 timing parts from Ford Performance and I’d be pretty skeptical of anything from anywhere else going into the timing or oil system.

I know it seems like an “opportunity” to upgrade. BTDT pretty recently, but going back in to replace an aftermaket part and do the bearings while your in there because aftermarker part skiped the quality assurance part of the assembly line and shit the bed is less fun.

theres plenty of good aftermarket parts out there, and a few bad ones, so fewer dice rolls you take on aftermarket engine internals the fewer times you’re going to crap out.

Would you still do the MMR tensioner bracket? I know stock it’s tensioned on the tight side instead of the slack.

 

[NightmareMoon]

Would you still do the MMR tensioner bracket? I know stock it’s tensioned on the tight side instead of the slack.

I'd just use the FordPerf high performance timing kit. It has the good chains, GT350R phasers, tensioners, etc.
https://www.lethalperformance.com/f...5ZkAkkB7BK5F6aMWUgLSN_-wAuQ5vteUaAtzuEALw_wcB

You're pretty much guaranteed to have fewer issues or 'quirks' like noise with the FP guides instead of going to a metal or different plastic guide.

If you were trying for high RPM drag build and you were not going to be driving it on the street, then you might decide to reach for more, but on a street car IDK man, I think its asking for problems.

 

[GTharmony]

I'd just use the FordPerf high performance timing kit. It has the good chains, GT350R phasers, tensioners, etc.
https://www.lethalperformance.com/f...5ZkAkkB7BK5F6aMWUgLSN_-wAuQ5vteUaAtzuEALw_wcB

You're pretty much guaranteed to have fewer issues or 'quirks' like noise with the FP guides instead of going to a metal or different plastic guide.

If you were trying for high RPM drag build and you were not going to be driving it on the street, then you might decide to reach for more, but on a street car IDK man, I think its asking for problems.

Fair enough, thanks for the input. I forgot to put in the post but I do plan on supercharging it, but I may just take your advice and go with the FP parts. Cheaper than all the MMR stuff I had put together.

 

[Basspro302]

I doubt you need timing chains, I would get a second opinion.

 

[NGOT8R]

I just did all of this on my Gen. 3, including the MMR flip tensioner. Aside from that, I stuck with all factory tuning components (chains and guides). Pick up the filters for your cams in advance, so you’ll be ready to go. Gen. 3 cars just use two filters (one in each intake cam), but the Gen. 2 may use four (one in each cam).

If you’re working alone, get yourself the camshaft holding tool. I have no help with my car, so I use the mechanical helping hands wherever needed.

Do you have or can you rent an engine hoist? You will need to lift the engine high enough to drop the oil pan. You should also clean all old RTV sealer off of the block and mating surfaces and install a new pan gasket.

I covered all of the things that it took to accomplish these tasks in my turbo build thread, which is still ongoing, which you might find helpful. It covers tools to remove and install the crank balancer and crank sprocket (if it’s hard to remove and install). I also used an FFRE crank stud kit.

Good luck and keep us in the loop. I always enjoy a good read, as there’s always so much more for me to learn.

 

[GTharmony]

I doubt you need timing chains, I would get a second opinion.

Here is a video of the slack in the chain:


I'm not as mechanically inclined as some other people on here, but I have had two different mechanics say that is too much slack.

 

[NGOT8R]

There will also be some slack with no oil pressure in the engine. Once the tensioners pump up with oil, that should change. I researched that when I was doing mine and that’s what I found.

 

[GTharmony]

I just did all of this on my Gen. 3, including the MMR flip tensioner. Aside from that, I stuck with all factory tuning components (chains and guides). Pick up the filters for your cams in advance, so you’ll be ready to go. Gen. 3 cars just use two filters (one in each intake cam), but the Gen. 2 may use four (one in each cam).

If you’re working alone, get yourself the camshaft holding tool. I have no help with my car, so I use the mechanical helping hands wherever needed.

Do you have or can you rent an engine hoist? You will need to lift the engine high enough to drop the oil pan. You should also clean all old RTV sealer off of the block and mating surfaces and install a new pan gasket.

I covered all of the things that it took to accomplish these tasks in my turbo build thread, which is still ongoing, which you might find helpful. It covers tools to remove and install the crank balancer and crank sprocket (if it’s hard to remove and install). I also used an FFRE crank stud kit.

Good luck and keep us in the loop. I always enjoy a good read, as there’s always so much more for me to learn.

Good call on the filters.

I have a more mechanically inclined buddy helping me. He has a gen 1 that he has been building so should bring some needed experience to make it smoother. Luckily has an engine hoist as well. Appreciate the advice, I will definitely check your thread out and keep everybody in the loop!

 

[GTharmony]

There will also be some slack with no oil pressure in the engine. Once the tensioners pump up with oil, that should change. I researched that when I was doing mine and that’s what I found.

Yeah, I know the tensioners are hydraulic, but even then, the slack in the chain seems excessive. I’ll post a video when i’m off work of the noise that the car is making. I’ve gotten to the point of diagnosing it that it has got to be the timing chain slapping the cover because I don’t know what else it could be. Mechanic thought it was my IMRC’s chattering but I locked them out and it continued.

 

[GTharmony]

I'd just use the FordPerf high performance timing kit. It has the good chains, GT350R phasers, tensioners, etc.

Would GT350R Phasers require tuning of the cam timing?

 

[NightmareMoon]

Would GT350R Phasers require tuning of the cam timing?

idk. I *think* they’re plug and play, but they may affect the how well it holds timing at high RPM if I understand correctly so that could result in a tweak?? Better ask someone who knows more than I do

 

[NGOT8R]

Is your goal just to freshen things up a bit and add goodies while in there? I didn’t see valve springs on your list. Maybe they’re not needed for your application. I do hear you on the “while I’m in there“ mentality. That’s what I Did too.

When you get to tearing things down, would you please get some good pics of your intake runners? I want to see how they look with the number of miles you’ve logged on the engine.

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