Ram TRX Supercharger Spacers

GenF-GTS

TRX Fanatic
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Current Ride
Ram TRX
Current Ride #2
Dodge Hellcat
All hellcat based engines suffer heat soak from the engine into the intercoolers.

What they also suffer from is a factory boost leak, where the poorly made factory gaskets allow boost pressure to leak from the intake ports into the oil gallery, you can see evidence of this leak here:

This boost leak is easily seen via the oil trace running from the intake port to oil gallery.
This oil gallery is a carry-over design from the naturally aspirated (non-boosted) engine where they put the oil into the engine, whereas the hellcat engine gets oil into the engine from the screw cap on the rocker cover.

A very large number of before/after tests have been completed on our 10mm spacers, ranging from thermal imaging of the blower, dyno tests, quarter mile testing, a lot of these reviews 100% independent of anyone can be found here: https://fiinterchillers.com/tech_articles/hellcat-spacer-plates-reviews-and-results/

Specifically for the Ram TRX, TrackHawk and Durango we offer our 1" Hellcat spacers which offer even more insulation against heat, before/after results of the spacers can be seen here in this comparison video:

As can be seen at full operational temperature the supercharger is running significantly colder, those results are:

Factory stock:
With 1" Spacers:
Outside temp 62FOutside temp 59F
Manifold air temp 118FManifold air temp 106F
I/C Coolant temp 71FI/C Coolant temp 66F
Intake temp 98FIntake temp 80F
Logo top 124FLogo top 90F
Side front 160FSide front 138F
Near IAT Sensor 170FNear IAT Sensor 132F
Left side lid 122FLeft side lid 92F
Right side lid 130FRight side lid 99F

If you have any questions, please do not hesitate to ask.
 
I'm having an upper pulley kit installed. How much more work are the spacers to put install?
 
How well do these work with intakes like S&B?
I'm interested to know as well. I'm pretty sure there's 2 different sizes of spacers, I remember reading about it here or on an aftermarket parts suppliers page. One is 1/2" the other is 1" I think. Some one please correct me if I'm wrong.
 
How well do these work with intakes like S&B?
Works fine, as you can see at 2:42 on this video the TRX is fitted with our 1" spacers and our chiller kit the intake and strut bar have not been modified in any way. They simply move up with the blower:


I'm having an upper pulley kit installed. How much more work are the spacers to put install?
A simple case of remove/replace the blower at the same time.


I'm interested to know as well. I'm pretty sure there's 2 different sizes of spacers, I remember reading about it here or on an aftermarket parts suppliers page. One is 1/2" the other is 1" I think. Some one please correct me if I'm wrong.
1 set is 10mm (0.39") and the other is 1"

The 1" is recommended for the TRX because it does run so much hotter than the other hellcat models.
 
I know some of you guys have been wondering and asking about 1" hellcat spacer fitment with the S&B intake, well here it is without any modifications required just bolt it on and send it

 
As per above video the S&B intake does not rub or move, the intake itself the filter area/box is a solid mounting if you fit the spacers it remains in the same location.

With the factory intake this is also the same, only the intake flange moves which has flexibility so it simply moves independently of the intake plastics.
The box/filter, engine cover all remain in the factory location just the flexible pipe is flexing to where it needs to go.
Ram TRX factory intake.jpg
 
A few questions as I am not even a novice in this area. Can this be added to an otherwise stock Hellcat TRX? Seems this would be good for the longevity of the motor? If under warranty, assume this would also be a problem with Ram?
 
A few questions as I am not even a novice in this area. Can this be added to an otherwise stock Hellcat TRX? Seems this would be good for the longevity of the motor? If under warranty, assume this would also be a problem with Ram?
Yes you can add it to a stock TRX, no tune is required.
As the spacers are essentially a thick gasket in layman terms this should not void any warranty as it hasn't done anything to the engine as such.
Obviously that would be up to your dealer, but in reality, it is a just a thicker gasket made of a really good material and the design also fixes the factory boost leak.

Combined with better cooling and the boost leak being fixed you will see a gain in power and the blower will go from burn your hand hot to luke warm as per the video comparison.
 
I am really interested in this modification but not sure I personally want to tackle it? Any good shops in the Nashville, TN market for this ?
 
Would you need a longer belt due to the blower being an inch higher?
 
Would you need a longer belt due to the blower being an inch higher?
Good point! I would assume the spacer kits probably comes with longer bolts for the blower and a new longer belt?
 
Would you need a longer belt due to the blower being an inch higher?
A 14mm longer belt than whatever belt size that is currently being used is required.
Good point! I would assume the spacer kits probably comes with longer bolts for the blower and a new longer belt?
A belt is not supplied as there is thousands of different pulley combos, we simply advise as per above that a 14mm longer belt than whatever is currently being used is required.
 
A 14mm longer belt than whatever belt size that is currently being used is required.

A belt is not supplied as there is thousands of different pulley combos, we simply advise as per above that a 14mm longer belt than whatever is currently being used is required.

As a single data point, I have the 1" spacers, 3.10" upper pulley, 10% OD lower, and the adjustable idler pulley and I'm using a K100615HD (62" long) belt. The idler pulley is closer to the "loose" end of it's range (since I have smaller uppers to swap out) and the tensioner is smack in the middle of it's range.

I took quite a few measurements when setting it all up and decided on this belt. I highly recommend getting a body measurement tape and running it through your system to see what is ideal, especially if you have a ton of items that change your belt length like I do.

Measuring Tape
 
As a single data point, I have the 1" spacers, 3.10" upper pulley, 10% OD lower, and the adjustable idler pulley and I'm using a K100615HD (62" long) belt. The idler pulley is closer to the "loose" end of it's range (since I have smaller uppers to swap out) and the tensioner is smack in the middle of it's range.

I took quite a few measurements when setting it all up and decided on this belt. I highly recommend getting a body measurement tape and running it through your system to see what is ideal, especially if you have a ton of items that change your belt length like I do.

Measuring Tape
How do you like the spacers? I was thinking of doing just the spacers ( no pulls just yet) as thought it would keep the Supercharger cooler and be better for the motor overall.
 
As a single data point, I have the 1" spacers, 3.10" upper pulley, 10% OD lower, and the adjustable idler pulley and I'm using a K100615HD (62" long) belt. The idler pulley is closer to the "loose" end of it's range (since I have smaller uppers to swap out) and the tensioner is smack in the middle of it's range.

I took quite a few measurements when setting it all up and decided on this belt. I highly recommend getting a body measurement tape and running it through your system to see what is ideal, especially if you have a ton of items that change your belt length like I do.

Measuring Tape
3.10" with 10% lower calls for a 10PK1509HD or K100594HD (without spacers)
What these belts are is 1509mm and 59.4"

When you add in the required 14mm for the 1" hellcat spacers this brings you up to 1523mm or 59.96"

This assumes that the info that that pulley combo requirements of 10PK1509HD or K100594HD (without spacers) are correct, and you are working up from that position.
 
3.10" with 10% lower calls for a 10PK1509HD or K100594HD (without spacers)
What these belts are is 1509mm and 59.4"

When you add in the required 14mm for the 1" hellcat spacers this brings you up to 1523mm or 59.96"

This assumes that the info that that pulley combo requirements of 10PK1509HD or K100594HD (without spacers) are correct, and you are working up from that position.
Thanks for that info. What brand are you using, Gates?
 
How do you like the spacers? I was thinking of doing just the spacers ( no pulls just yet) as thought it would keep the Supercharger cooler and be better for the motor overall.
No feedback as far as performance or anything like that. Currently waiting on my tuner to send me a start-up tune.

Install was easy, getting the blower back in with the spacers was easier than taking the blower out without the spacers. Unfortunately, the combination of the spacers and the Kong 108mm TB means my K&N intake doesn't fit, so I'm currently fabbing up a custom intake. I likely would have been fine with just the spacers, but the Kong TB is longer than the OEM in addition to being a larger diameter, so it really throws everything off.
 
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