My RTI Ramp Score - How to Improve It?
05-07-2010, 12:58 PM
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My RTI Ramp Score - How to Improve It?
With the help of a buddy I got my JK up on an RTI ramp today for the first time. And I wanted to share my results and initial impressions with you guys and maybe you can share some of your vast knowledge with me.
The Setup
The Numbers:
Notes during Flex:
My Impression:
So obviously my numbers are not that impressive. They are actually worse than some stock numbers I have seen. Granted there is probably a + - 3% accuracy issue here, taking into account ground levelness and accuracy of all measurements. But given all that, I was hoping for better than stock performance from my 2.5" Teraflex coil lift w/ shock adapters.
Questions:
The Setup
- All relevant JK specs should be in my Signature
- We used a 30 deg. ramp but all my RTI scores will be calculated for a 20 deg ramp
- Street pressure of 27 psi
The Numbers:
- Front Left tire was 26.5" off the ground
- Which is 77.5" up a 20 deg. ramp
- RTI score on 20 deg ramp of 812
Notes during Flex:
- front left side was hard up on the bumpstop with probably .75-1" left in the spring compression
- front right side was not at full shock extension
- rear left side was drooped completely with the stock Rubicon shock with TF shock adapter as the limiting strap
My Impression:
So obviously my numbers are not that impressive. They are actually worse than some stock numbers I have seen. Granted there is probably a + - 3% accuracy issue here, taking into account ground levelness and accuracy of all measurements. But given all that, I was hoping for better than stock performance from my 2.5" Teraflex coil lift w/ shock adapters.
Questions:
- Was I wrong to expect better than stock flex out of this kit?
- What is my upgrade path to make my Rubi more flexxy?
05-07-2010, 01:19 PM
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Longer shocks and less bumpstoping in the front.
I initially ran Rubi shocks with the extensions but found them to be too short.
So, I switched to Skyjacker Hydros designed for 2.5"-3.5" lifts. H7037 and H7035. With the current rebate, you can get a set for barely over $100 from summitracing.com
They made a big difference.
I also cut my flares flat and removed my front extended bumpstops and went back to stock.
Now I run OME LT shocks with 0.75" front extended bumpstops and the TF rear bumpstops that came with my TF BB. I am sure my RTI is well over 1000 now.
I initially ran Rubi shocks with the extensions but found them to be too short.
So, I switched to Skyjacker Hydros designed for 2.5"-3.5" lifts. H7037 and H7035. With the current rebate, you can get a set for barely over $100 from summitracing.com
They made a big difference.
I also cut my flares flat and removed my front extended bumpstops and went back to stock.
Now I run OME LT shocks with 0.75" front extended bumpstops and the TF rear bumpstops that came with my TF BB. I am sure my RTI is well over 1000 now.
05-08-2010, 10:17 PM
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My RTI Ramp Score - How to Improve It?
Originally Posted by planman
Longer shocks and less bumpstoping in the front.
I initially ran Rubi shocks with the extensions but found them to be too short.
So, I switched to Skyjacker Hydros designed for 2.5"-3.5" lifts. H7037 and H7035. With the current rebate, you can get a set for barely over $100 from summitracing.com
They made a big difference.
I also cut my flares flat and removed my front extended bumpstops and went back to stock.
Now I run OME LT shocks with 0.75" front extended bumpstops and the TF rear bumpstops that came with my TF BB. I am sure my RTI is well over 1000 now.
I initially ran Rubi shocks with the extensions but found them to be too short.
So, I switched to Skyjacker Hydros designed for 2.5"-3.5" lifts. H7037 and H7035. With the current rebate, you can get a set for barely over $100 from summitracing.com
They made a big difference.
I also cut my flares flat and removed my front extended bumpstops and went back to stock.
Now I run OME LT shocks with 0.75" front extended bumpstops and the TF rear bumpstops that came with my TF BB. I am sure my RTI is well over 1000 now.
05-09-2010, 08:00 AM
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As far as brakelines go, if the 9550 shocks are the ones that come with the TF 2.5" lifts, then you shouldn't need more than the rear relocation brackets you already have.
As far as how much bumpstopping is needed for those shocks, you'd need to get out a tape measure to know for sure how much bumpstopping would be needed.
As far as how much bumpstopping is needed for those shocks, you'd need to get out a tape measure to know for sure how much bumpstopping would be needed.
05-09-2010, 08:51 AM
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As far as brakelines go, if the 9550 shocks are the ones that come with the TF 2.5" lifts, then you shouldn't need more than the rear relocation brackets you already have.
As far as how much bumpstopping is needed for those shocks, you'd need to get out a tape measure to know for sure how much bumpstopping would be needed.
As far as how much bumpstopping is needed for those shocks, you'd need to get out a tape measure to know for sure how much bumpstopping would be needed.
I also really appreciate all your help Planman!
05-09-2010, 09:00 AM
#7
Longer shocks and less bumpstoping in the front.
I initially ran Rubi shocks with the extensions but found them to be too short.
So, I switched to Skyjacker Hydros designed for 2.5"-3.5" lifts. H7037 and H7035. With the current rebate, you can get a set for barely over $100 from summitracing.com
They made a big difference.
I also cut my flares flat and removed my front extended bumpstops and went back to stock.
Now I run OME LT shocks with 0.75" front extended bumpstops and the TF rear bumpstops that came with my TF BB. I am sure my RTI is well over 1000 now.
I initially ran Rubi shocks with the extensions but found them to be too short.
So, I switched to Skyjacker Hydros designed for 2.5"-3.5" lifts. H7037 and H7035. With the current rebate, you can get a set for barely over $100 from summitracing.com
They made a big difference.
I also cut my flares flat and removed my front extended bumpstops and went back to stock.
Now I run OME LT shocks with 0.75" front extended bumpstops and the TF rear bumpstops that came with my TF BB. I am sure my RTI is well over 1000 now.
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05-09-2010, 09:54 AM
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You would need longer brakelines, extended bumpstops, longer swaybar links, and rear coil retainers to effectively run those shocks. Also, you might need taller springs or coil spacers to have good dampening results at regular ride height.
No doubt about it. Your shocks are limiting your droop--along with swaybar links unless you are running longer ones.
No doubt about it. Your shocks are limiting your droop--along with swaybar links unless you are running longer ones.
05-09-2010, 10:36 AM
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Planman,
At rest I measured over 6" of exposed piston rod on my shocks (Bilstein) and only about 3" between the bump stops and perch. It's about the same for the fronts and rears. Is this limiting my articulation? Can I remove the bump stops (TF)?
At rest I measured over 6" of exposed piston rod on my shocks (Bilstein) and only about 3" between the bump stops and perch. It's about the same for the fronts and rears. Is this limiting my articulation? Can I remove the bump stops (TF)?
05-09-2010, 01:19 PM
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Not in the front. Instead, you would remove the TF front bumpstops, drill & tap a hole in the bottom spring perch, and bolt an extended stop to the bottom perch. You can use a hockey puck or buy custom sizes from JKS or other vendors.
I don't know about the rear, but you could custom make your own with rectangle steel tubing cut in a trapezoid shape.
I don't know about the rear, but you could custom make your own with rectangle steel tubing cut in a trapezoid shape.
