• Sign Up! To view all forums and unlock additional cool features

    Welcome to the #1 Dodge, Jeep and RAM Forum dedicated to FCA owners and enthusiasts. Register for an account, it's free and it's easy, so don't hesitate to join the SRT Forum today!


Stock Fuel Rails, why they don’t keep up

Hpindy

4000 Posts Club
Founding Member
9 Second Best E/T
HFCOTM
Member ID
#974
Messages
4,869
Reactions
11,001
Likes
302
City
Jackson's Point
State
Non-US
Country
Canada
Vehicle
2018 challenger hellcat
I will give you my $0.02
I would go with the lightest rotating assembly and light pedal pressure for a street car . Inertia goes a long way and your leg will thank you .

Sent from my BBF100-2 using Tapatalk
 


Speedy!

Infomercial Producer
Staff Team
Founding Member
U.S. Marine Veteran
9 Second Best E/T
HFCOTM & HFCOTY
Member ID
#1070
Messages
6,069
Reactions
15,536
Likes
402
City
Murfreesboro
State
TN
Country
United States
Vehicle
2016 Hellcat Go Man Go
He does have some kind of two step.

I ran a McLeod RXT in Orange Krush and the only thing I didn't like about it was the chatter leaving stop lights. I had to give it a few revs to avoid that so what HPIndy says may help that.
 


BULL

Oh NO! Not that guy!
Staff Team
Founding Member
U.S. Marine Veteran
Donating Member
HFCOTM
Wiki Contributor
Member ID
#1079
Messages
14,590
Reactions
44,756
Likes
402
City
Weld County
State
CO
Country
United States
Vehicle
MY16 M6 Challenger Hellcat
HFCOTM
View Images
He does have some kind of two step.

I ran a McLeod RXT in Orange Krush and the only thing I didn't like about it was the chatter leaving stop lights. I had to give it a few revs to avoid that so what HPIndy says may help that.


Did that chatter change over time? Or was it always like that? (Did it get better after a lot of miles?)
 


OP
16GoManGoHC2

16GoManGoHC2

3000 Posts Club
Founding Member
9 Second Best E/T
Member ID
#1139
Messages
3,291
Reactions
7,771
Likes
252
City
Nanticoke
State
PA
Country
United States
Vehicle
2016 Challenger He’ll Cat
Thread Starter #204
He does have some kind of two step.

I ran a McLeod RXT in Orange Krush and the only thing I didn't like about it was the chatter leaving stop lights. I had to give it a few revs to avoid that so what HPIndy says may help that.
@Speedy! What was your first gear ratio in orange crush? 3.73 rear or 3.90? I’m running a 2.98 first which has made starting out much easier, I don’t have to slip the clutch ever to keep from stalling unless on a steep hill so that should help in the chatter department? I can just dump the clutch at idle and it’s going somewhere, my wife can even drive it LOL.

I also have RE Axles which are 5 lbs each lighter then stock axles and 7 lbs each lighter then the DSS stage 5 axles. I can cut almost 20 lbs of rotating mass if I go with stock clutch on alum fly wheel and swap out the axles to the RE ones.
But the stock clutch pressure plate is much bigger in diameter then the McLeod which probably makes more of a difference in rotational mass even if it’s a few lbs lighter. My buddy has the RXT1200 in his Mustang and pedal pressure is lighter then my stock clutch but mine is the RXT1200HD which has more clamp load and probably a bit more pedal pressure. Tough decision LOL.
@Hpindy Yes, It’s a street car but it does see track time on 315/50-17 MT Street R’s, and I 1/4 it every time I’m out with it it gets a few 1/4 pulls always. A tickle of nitrous may be the next power adder as I have a few plates and solenoids laying around all I need is another bottle.
 


Hpindy

4000 Posts Club
Founding Member
9 Second Best E/T
HFCOTM
Member ID
#974
Messages
4,869
Reactions
11,001
Likes
302
City
Jackson's Point
State
Non-US
Country
Canada
Vehicle
2018 challenger hellcat
@Speedy! What was your first gear ratio in orange crush? 3.73 rear or 3.90? I’m running a 2.98 first which has made starting out much easier, I don’t have to slip the clutch ever to keep from stalling unless on a steep hill so that should help in the chatter department? I can just dump the clutch at idle and it’s going somewhere, my wife can even drive it LOL.

I also have RE Axles which are 5 lbs each lighter then stock axles and 7 lbs each lighter then the DSS stage 5 axles. I can cut almost 20 lbs of rotating mass if I go with stock clutch on alum fly wheel and swap out the axles to the RE ones.
But the stock clutch pressure plate is much bigger in diameter then the McLeod which probably makes more of a difference in rotational mass even if it’s a few lbs lighter. My buddy has the RXT1200 in his Mustang and pedal pressure is lighter then my stock clutch but mine is the RXT1200HD which has more clamp load and probably a bit more pedal pressure. Tough decision LOL.
@Hpindy Yes, It’s a street car but it does see track time on 315/50-17 MT Street R’s, and I 1/4 it every time I’m out with it it gets a few 1/4 pulls always. A tickle of nitrous may be the next power adder as I have a few plates and solenoids laying around all I need is another bottle.
If you are going to give it a sniff of N20 then put the RXT in it . The extra torque on the hit will really load the clutch.

Sent from my BBF100-2 using Tapatalk
 


Speedy!

Infomercial Producer
Staff Team
Founding Member
U.S. Marine Veteran
9 Second Best E/T
HFCOTM & HFCOTY
Member ID
#1070
Messages
6,069
Reactions
15,536
Likes
402
City
Murfreesboro
State
TN
Country
United States
Vehicle
2016 Hellcat Go Man Go
Did that chatter change over time? Or was it always like that? (Did it get better after a lot of miles?)
Was like that the whole time I had it in there. I don't remember how many miles but a couple years I guess. It was kinda annoying on the street if I'm honest, but I needed the grab at the track so I lived with it.

@Speedy! What was your first gear ratio in orange crush? 3.73 rear or 3.90? I’m running a 2.98 first which has made starting out much easier, I don’t have to slip the clutch ever to keep from stalling unless on a steep hill so that should help in the chatter department? I can just dump the clutch at idle and it’s going somewhere, my wife can even drive it LOL.
I don't remember, it had a 3.92 rear end in it I know that for sure, and whatever the stock Tremec TR6060 has for gear ratios, although the trans was built by RPM with upgraded bits the gears were stock ratio.
 


Hpindy

4000 Posts Club
Founding Member
9 Second Best E/T
HFCOTM
Member ID
#974
Messages
4,869
Reactions
11,001
Likes
302
City
Jackson's Point
State
Non-US
Country
Canada
Vehicle
2018 challenger hellcat
Was like that the whole time I had it in there. I don't remember how many miles but a couple years I guess. It was kinda annoying on the street if I'm honest, but I needed the grab at the track so I lived with it.



I don't remember, it had a 3.92 rear end in it I know that for sure, and whatever the stock Tremec TR6060 has for gear ratios, although the trans was built by RPM with upgraded bits the gears were stock ratio.
You would have had the wide ratio 2.98 gear set in you car . I had it in mine and hated it . It was dump truck low . I switched my trans ratios to the close ratio Hemi 4 speed ratios ( 2.66 gear set )

Sent from my BBF100-2 using Tapatalk
 


OP
16GoManGoHC2

16GoManGoHC2

3000 Posts Club
Founding Member
9 Second Best E/T
Member ID
#1139
Messages
3,291
Reactions
7,771
Likes
252
City
Nanticoke
State
PA
Country
United States
Vehicle
2016 Challenger He’ll Cat
Thread Starter #208
Well Santa finally arrived!!
588AB692-6BC3-4FC0-A840-AD653F2E049A.jpeg 2F93194B-65BF-4C47-A3B1-1CD0A50288A7.jpeg 4C3E8015-F383-470F-82D3-30F064E111AD.jpeg EEA9FE62-00B6-46E5-BCE8-862D3A25E90A.jpeg 2D810FE1-4941-4071-A30F-9E37A4BE1582.jpeg 9347736F-3149-4628-8C90-8681181AE9CB.jpeg CCD27E73-CBC9-4FE0-A467-D791B860A5D4.jpeg BD330B03-4C64-41F6-A51E-2D860C49F261.jpeg DAA2B95C-3442-4DF6-9BA5-695E43287AC9.png 930EEDD5-3B8F-4A32-8F1C-E070CE256581.jpeg BD060ED6-C25B-4C9A-BB1C-FF2745A6C7DA.jpeg
 


drag racer

1000 Posts Club
Founding Member
Premium Account
Member ID
#1047
Messages
1,229
Reactions
3,157
Likes
162
City
PEORIA
State
AZ
Country
United States
Vehicle
'16 Challenger HC, '19 Durango SRT, '22 Charger SP
outstanding parts selections!
 


OP
16GoManGoHC2

16GoManGoHC2

3000 Posts Club
Founding Member
9 Second Best E/T
Member ID
#1139
Messages
3,291
Reactions
7,771
Likes
252
City
Nanticoke
State
PA
Country
United States
Vehicle
2016 Challenger He’ll Cat
Thread Starter #210
outstanding parts selections!
THANK YOU!! Piston is totally custom design but WISECO may make it a future offering. (THANKS @Hpindy for some guidance and suggestion in this area) The quench area matches the head chamber area which should help with detonation, the hard anodize on the upper half is supposedly over 70Rc which is harder then the rings so the ring lands should not get pounded out for a long long time, the hard coated crown should shed carbon buildup and resist detonation as well and be pretty immune from being eroded away from detonation up to a point, the lower portion is a anodize PTFE mix which also penetrates into the wrists pin bore material as well for longevity in that area as well, perfect match to the DLC H13 .250 wall PINS, sealed with Total Seal AP rings with some special coatings to prevent micro welding and wear, Manley H Tuff rods. The whole assembly only weighs 49 grams more then stock but is rated rated for 200 HP per hole the rod being the weakest part, piston is good for 250 they told me. Way more then I’ll ever ask for it on a stock crank and block. Crank and rods will be spinning on King XPC pMax Black coated bearings with the latest updates in design, their just shipping from Israel now. Longevity and reliability of power being the main focus of this rebuild. Parts delivery has taken a long time but will be worth the wait in the end is my hope. 🤞🙏
 


Mean Cat

4000 Posts Club
Founding Member
Donating Member
9 Second Best E/T
HFCOTM
Member ID
#997
Messages
4,981
Reactions
9,435
Likes
302
City
Houston
State
TX
Country
United States
Vehicle
2017 Challenger Hellcat
I believe on the Ford platform you can control fuel per cylinder. On the Dodge platform that's not possible, at least from what I know. I've heard of several Hellcats having a problem with cylinder 7 now. It's gonna either be fuel, which really means temperature, or something with how that cylinder is shaped maybe more friction or something, which also means more temperature in the end. Heat it up a bit too much rings touch and bad things happen.

For reference, my 93 octane tune was setup to run 11.49 AFR (about .83 lambda) on 93 octane. Now above 6200 I have it gradually increase fueling to 11.3 for a bit more cooling at those RPMs. This is a reason E85 is so good in these cars, you get 30% more fuel volume right off the bat PLUS the extra cooling effect of the ethanol.

Most tuners I know run them a bit richer so I imagine Curt's tunes are fine as is. A lot of tuners I've talked to shoot for 11.0 AFR (.80 lambda) to account for crazy stuff owners might do, like back to back to back WOT pulls or something. In a factory tune cat over temp would take care of that, but I don't know any tuner that leaves COT turned on, myself included. You don't want it too rich or it's hard on cats and other things.
My COT is on but the temp was raised some & still have cats.
I think it is set to .80 or .81 Lambda.
 


Mean Cat

4000 Posts Club
Founding Member
Donating Member
9 Second Best E/T
HFCOTM
Member ID
#997
Messages
4,981
Reactions
9,435
Likes
302
City
Houston
State
TX
Country
United States
Vehicle
2017 Challenger Hellcat
Good looking Dog, the one on top :LOL:, love German shepherds, had 2 growing up.
 


Mean Cat

4000 Posts Club
Founding Member
Donating Member
9 Second Best E/T
HFCOTM
Member ID
#997
Messages
4,981
Reactions
9,435
Likes
302
City
Houston
State
TX
Country
United States
Vehicle
2017 Challenger Hellcat
OP
16GoManGoHC2

16GoManGoHC2

3000 Posts Club
Founding Member
9 Second Best E/T
Member ID
#1139
Messages
3,291
Reactions
7,771
Likes
252
City
Nanticoke
State
PA
Country
United States
Vehicle
2016 Challenger He’ll Cat
Thread Starter #214
Ok, here we go finally!!! Continuing this saga mainly for those that have been watching this for months now, not doing a separate build thread.
So bright and early this morning the day started off with a thorough final cleaning of the just returned from balancing, magnaflux to check for cracks, and Micro Polish of all the journals. Hosed it down with brake clean and scrubbed the oil passages with first a 7/32” brass brush then a nylon one to make sure no brass bristles remained, blow out with shop air, hose down with WD40 and the nylon brush again then yet another blow down so no lint no nothing remain. Ditto for the block with WD40 and now assembly can finally start!! YAAAAAAYYYYY !!
05AB3B41-5FF9-43B6-A87C-7C5EC1C59C3E.jpeg 6AFB18F1-8624-4095-87F8-283F442217E6.jpeg 86D807E8-3B67-4076-BFB4-D9AC5CCD4CE6.jpeg 48848413-E2CE-4ED1-A467-C496F9D30D8F.jpeg
 


OP
16GoManGoHC2

16GoManGoHC2

3000 Posts Club
Founding Member
9 Second Best E/T
Member ID
#1139
Messages
3,291
Reactions
7,771
Likes
252
City
Nanticoke
State
PA
Country
United States
Vehicle
2016 Challenger He’ll Cat
Thread Starter #215
After thoroughly blowing out the oil galleries install the oil squirters. They where bagged and will go back in the same places they came from. 36893B6C-7B91-46E9-81D7-0A0C3E77A532.jpeg 12A1A1A8-B7AB-4125-BD2E-F7F4353DB465.jpeg 78A8C8E5-6F65-4FA9-9E83-0079C7440898.jpeg 0AF623F4-00E0-4C76-BC95-960B0C64F965.jpeg
 


OP
16GoManGoHC2

16GoManGoHC2

3000 Posts Club
Founding Member
9 Second Best E/T
Member ID
#1139
Messages
3,291
Reactions
7,771
Likes
252
City
Nanticoke
State
PA
Country
United States
Vehicle
2016 Challenger He’ll Cat
Thread Starter #216
Now onto Main Bearings. Using King pMax Black coated bearings. Clearance on all 5 journals .0013”. 4593A0DF-15D1-491E-907A-F0A741D8BF33.jpeg 49DE21B4-AA75-402C-9A94-ECA7D8E89585.jpeg 9C370352-6980-4C36-B175-64705F6DE6C5.jpeg ECF7E607-9B89-4562-9820-2170973F36B6.jpeg 360FD2AC-8D24-4333-812C-8084E8C7A93C.jpeg
 


OP
16GoManGoHC2

16GoManGoHC2

3000 Posts Club
Founding Member
9 Second Best E/T
Member ID
#1139
Messages
3,291
Reactions
7,771
Likes
252
City
Nanticoke
State
PA
Country
United States
Vehicle
2016 Challenger He’ll Cat
Thread Starter #217
Using Driven BR40 break in oil and their Assembly gel, very light coat on all journals and bearings. Install thrust bearings, add caps and Tq the ARP studs in 3 steps to 100 ft lbs. D3010F1F-982A-4323-A50B-B91379CE0DC2.jpeg 5EEB85A3-4E6B-4571-8E6B-4DF56D4C8C89.jpeg 199FE6D6-5217-4EA8-BE6E-59FBCFAA860B.jpeg 37DEFE80-93D0-4629-A2D1-606BB8AC365B.jpeg D2900C85-3C45-4A11-B4C5-CCAF9BD2BF05.jpeg 9801A591-1DF4-44B8-A79D-02E7D3A39B10.jpeg 16346863-BCD5-4242-A1C8-4BAE0E7769E2.jpeg 6FDA412F-628E-4343-A43D-0349C6205FB5.jpeg
 


OP
16GoManGoHC2

16GoManGoHC2

3000 Posts Club
Founding Member
9 Second Best E/T
Member ID
#1139
Messages
3,291
Reactions
7,771
Likes
252
City
Nanticoke
State
PA
Country
United States
Vehicle
2016 Challenger He’ll Cat
Thread Starter #218
Crank spins nice and free even with the thick gel on the bearings.


Edit, added video with no sound to get rid of music copy right issue
 


Last edited:
OP
16GoManGoHC2

16GoManGoHC2

3000 Posts Club
Founding Member
9 Second Best E/T
Member ID
#1139
Messages
3,291
Reactions
7,771
Likes
252
City
Nanticoke
State
PA
Country
United States
Vehicle
2016 Challenger He’ll Cat
Thread Starter #219
C8870A4C-EB57-46F8-8B21-7D6604132BF3.jpeg Add new rear main seal
Here’s the steps done so far 205A76CB-A494-4254-912D-0DC48315AEDF.jpeg 47B66AF2-4922-4CF1-BE1A-B1C38C24AB31.jpeg 75C09DA3-059F-4F43-89BF-133963C56436.jpeg
 


OP
16GoManGoHC2

16GoManGoHC2

3000 Posts Club
Founding Member
9 Second Best E/T
Member ID
#1139
Messages
3,291
Reactions
7,771
Likes
252
City
Nanticoke
State
PA
Country
United States
Vehicle
2016 Challenger He’ll Cat
Thread Starter #220
Add new Demon Cam Shaft and install thrust plate, upper and lower cam sprockets, new oil pump, check cam timing.
7B327022-CE25-41A5-A6A7-0DF6ABE7CC56.jpeg 3660B9AA-F1F9-4BC6-A6B0-C1C14391F44F.jpeg 953729B9-F723-4519-BC2F-F5C206F8717F.jpeg 6C19DA95-C259-4B03-8E0B-63E3FA1BCCB7.jpeg 60EFBC62-0183-41E5-8F1C-0CC274075867.jpeg 2A8EA25C-A31A-4B3F-B0CB-82C5B2FDDB59.jpeg F5692A3A-859A-4E2B-A507-EB405017C0E2.jpeg B2626EE9-0E20-449C-8BDA-7DE27956D1FD.jpeg 09B233BE-5EA5-47C5-90D0-FFFF30EE35E2.jpeg
 




Top