Jason - Thanks for the info and the additional pictures.
Do you have 2 1/2" or 3 1/2" Springs up front?
Yeller, this is the type of vehicle I have experience with.
https://images.app.goo.gl/t4U929raoPFhJmno7
Obviously they are in a perfect world where they can do whatever they want and put the output shaft wherever they want. But I know in these applications, the geometry let's the pinion angle radius match the drive shaft and the plunge is usually less than 1in over 36in wheel travel. They also have perfect antisquat and all that, to where having over a 1000 foot pounds of torque down the driveshaft has no affect or input on the suspension raising or squaring. Drive shaft angle is also almost the same as the lower links. Everything about the duff kit seems abnormal. I'd like to see it performs in a high horsepower application under acceleration and cornering under power
I was at one of the local shops that had installed one of the Duff kits on a 250K bronco build. Bronco had a high end coyote motor (lots of HP)
Speaking with the builder, he said it drove poorly cornered like hell. You could see when he powered up the bronco and put it in gear it squatted tremendously. When he parked the bronco look to unload the suspension and the bronco lifted what appeared to be six inches. Not saying this is good or bad, just observations and conversation from the builder.
After seeing it for myself I would have to question spending the money on the kit for my uses.
jason, how did you know what height to set your upper coil mount on the rear?
what size coils are those?
BigMuddy - Were there Sway Bars included in that build?
Seems from what I’ve heard and seen is that installation and sway bars make a huge difference in outcomes. I spoke to several people and did research prior to purchasing. Shocking as it may be some of these big builders do shoddy work. I’ve read here and seen in pics some examples of this (Gateway/Velocity). Obviously you can’t take a N of one and apply it to the whole. I’ll of course share my experience once I’m done whether it’s good or bad.
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I can see the sway bars making a huge difference. This was Gateway bronco build but man it looked like no expense was spared to me...
I’m familiar with that build, lots of things going on aggravating those issues. Let’s just say 92” WB, high profile vehicle, supercharged crazy hp and not following all of the instructions and recommendations doesn’t work out the best.
And everyone is shocked when they do 5x normal horse power than what everything was designed around that it doesn’t magically handle like a Ferrari %)
We are working on it with a mock-up frame to see what needs to cut and fab up. a swaybar will be used.I am anxious to hear what Madgyver has to say about his kit when it finished.
what's up dude? nice to see you here... i still want your Broncno
I was at one of the local shops that had installed one of the Duff kits on a 250K bronco build. Bronco had a high end coyote motor (lots of HP)
Speaking with the builder, he said it drove poorly cornered like hell. You could see when he powered up the bronco and put it in gear it squatted tremendously. When he parked the bronco look to unload the suspension and the bronco lifted what appeared to be six inches. Not saying this is good or bad, just observations and conversation from the builder.
After seeing it for myself I would have to question spending the money on the kit for my uses.
Everything you are saying did happen immediately after they installed it and test drove it. I work very closely with Gateway's shop foreman and we have a great working relationship. Sure, the owner was very concerned at first but they slammed that suspension together due to very tight deadlines and when they got it back to the shop they went back through their checklist and found a handful of issues they were able to correct. Corrections to the install not to the system we sold them. They also had more challenges to face than normal due to how much low end torque that super charger makes. Everything on that Bronco needed to be dialed in to handle that power with a 92" wheelbase and 5.5" of total lift on 35" tires
Fast forward two weeks before Barrett Jackson 1-18-2020 and the final piece of the puzzle they needed was shocks. They tried the off the shelf offerings from Fox and Bilstein and just weren't happy. I told them for that 750hp build they really should consider custom valved shocks. They decided to try our new MS2020 shocks first and they were thrilled with how they work and sent it to get auctioned off.
How do we know they are happy with our Monster street 4 link? They just had 2 more of those exact same setups ship out today.
MM