Lifter tick or exhaust manifold? 2019 Rebel

[HSKR R/T]

Also, for clarity, is it the exhaust manifolds themselves that crack? Or is it the bolts that break off and just the bolts need replaced? I was under the impression the most common problem was just the bolts.

On the 4th gens, the bolts broke. To "fix" that, they went to stronger bolts in the 5th gen. Now the manifolds themselves crack.

 

[Cbty2050]

On the 4th gens, the bolts broke. To "fix" that, they went to stronger bolts in the 5th gen. Now the manifolds themselves crack.

The bolts are not stronger, still the same grade. They added a tie bar/reinforcement bar that attaches to all the bolts. Fixed 1 problem of bolts breaking but caused another of cracked manifolds. What is amazing is that the "kit" is around $100 for all the parts needed. It's just a little more labor intensive than the 4th gens.

 

[Scram1500]

Anyone ever checked that the manifolds are flat before installation? I could be they need to planed before bolting to the heads

 

[Cbty2050]

Anyone ever checked that the manifolds are flat before installation? I could be they need to planed before bolting to the heads

I have not put a straight edge and checked them officially. I have set them flat on my stainless steel top on my toolbox. They are "straight", can't say they are true or not.

On the 4th gen I have replaced many broken bolts and gaskets. I have even put warped manifolds back on for customers in a cost saving repair. My neighbor is going on 4 years with that fix and no leaks yet.

 

[Jorangel87]

That's great news! For anyone else who has experience with this: is this repair normally covered under the powertrain warranty?

Very well covered and has warranty for 2 years from date replaced whether your warranty expires or not.

 

[BowDown]

I have not put a straight edge and checked them officially. I have set them flat on my stainless steel top on my toolbox. They are "straight", can't say they are true or not.

On the 4th gen I have replaced many broken bolts and gaskets. I have even put warped manifolds back on for customers in a cost saving repair. My neighbor is going on 4 years with that fix and no leaks yet.

How long does repair take for both sides? I believe mine are cracked too, just not as bad as others, the heat shield and all the bolts appear to be intact

 

[BowDown]

Has anyone tried changing to the SRT Jeep Manifolds as a upgrade replacement?

 

[HSKR R/T]

Has anyone tried changing to the SRT Jeep Manifolds as a upgrade replacement?

View attachment 160918

For that price I'd buy actual shorty headers.

 

[Cbty2050]

How long does repair take for both sides? I believe mine are cracked too, just not as bad as others, the heat shield and all the bolts appear to be intact

I can do both sides in 2-3 hours. Warranty labor time is 5.4 hours.

 

[BowDown]

For that price I'd buy actual shorty headers.

I'm not interested in the increased engine noises headers emit, valve train noises mostly. Also not sure that shorties will allow enough heat for the cats to light off and not set codes

 

[BowDown]

I can do both sides in 2-3 hours. Warranty labor time is 5.4 hours.

Thanks, thats about how long I expected, probably take it in Tuesday hoping they aren't busy after the holiday

 

[HSKR R/T]

I'm not interested in the increased engine noises headers emit, valve train noises mostly. Also not sure that shorties will allow enough heat for the cats to light off and not set codes

Headers will have zero effect on catalytic converter function. And shouldn't add any more noise than those Jeep manifolds would

 

[theblet]

I think my 5 year warranty runs out at the end of this year. If it happens to me, i guess ill look into some shorty's.

What size tubing would work best? 1 3/4" maybe?

 

[1BADRAMLIMITED]

Just helped a local friend replace spark plugs in his 2017. Similar sound, a d it was definitely lifters on #1 cylinder. One way to help isolate is to use a long screwdriver. Place it on engine where you think sound is coming from then ut handle up against your ear like a stethoscope. Helps isolated where sound is coming from. Unfortunately, my local friend is looking at cam and lifter replacement, if not entire engine if it got too bad.

Wanting to do my plugs soon. Can u tell me firing order and best way to go about getting to the plugs?

 

[BowDown]

Wanting to do my plugs soon. Can u tell me firing order and best way to go about getting to the plugs?

Firing order is for suckers, don't fall for that BS

 

[BowDown]

Headers will have zero effect on catalytic converter function. And shouldn't add any more noise than those Jeep manifolds would

I've had headers on almost every car I've owned and they absolutely increase valvetrain noise as well as exhaust noise. On my Z06, I went from 1 3/4" to 1 7/8" and heard a noticeable difference in VT sound but more to the point, I don't want to race car this truck (start modding). I want it to stay as quiet as possible because I enjoy that aspect of it. If the jeep SRT manifolds maintained a similar noise level yet allowed me to gain 10hp or even if they just improve the MPG, id be happy.

As for the cat function, I've seen shorties both have zero effect and set off all kinds of P0420/P0430 codes. I ain't nobody got time for that

 

[BowDown]

I think my 5 year warranty runs out at the end of this year. If it happens to me, i guess ill look into some shorty's.

What size tubing would work best? 1 3/4" maybe?

if you're not doing anything else, yeah, 1 3/4". Bigger will hurt low speed torque which you'll feel in this truck

 

[HSKR R/T]

Wanting to do my plugs soon. Can u tell me firing order and best way to go about getting to the plugs?

I mean, if you really want to know the firing orders it's 18436572, not that it matters with our coil on plug ignition. Getting to the plugs, a 6-8" extension and spark plug socket. Ones under the brake booster are the worst.

 

[Cbty2050]

I mean, if you really want to know the firing orders it's 18436572, not that it matters with our coil on plug ignition. Getting to the plugs, a 6-8" extension and spark plug socket. Ones under the brake booster are the worst.

Swivel spark plug socket with a locking extension makes it a little easier.

 

[theblet]

if you're not doing anything else, yeah, 1 3/4". Bigger will hurt low speed torque which you'll feel in this truck

Cool thanks. Anyone ever used flowtech? I think they are made by Holley.