JHF Portal Axle Bible
- Thread starter woody
- Start date
This site earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
Hey Woody, do you see any advantage/disadvantage to doing (rear engine moon buggy) a 9" 70x10 passenger front- for front axle, and a 70x8 driver front- for rear axle, adjusted minimally (basically a 10.3" offset on the passenger front-or 7.7" on the pass rear) to have the same length shafts? Outside of the aggravation of building different upper link mounts.
- Thread starter
- #33
I know Jesse had a passenger offset front and a driver offset rear, it does help when the engine is angled in the chassis for drive line angles.
My next 2-seat will be passenger offset front (like the current) but centered rear. I think.....
sorry, I think the offset gets confusing when talking rear steer axle. But in my original question, in a rear engine car, both axles would be passenger drop, so I was referring to running two different offsets to maintain matching length inners respectively for both axles, by cheating the 8' and 10" offsets .3".
Last edited:
- Thread starter
- #36
lots on 43's, can't see why 44's would be an issue, other than steering clearance.
JarrodBrazil
Spotter Required
I bought the high strength JHF portal gears I built this stand to remove the boxes off the car then transfer them to a stand to lay them flat for disassembly used a 2” receiver on the bottom to fit the jack and mobile vice stand.
JarrodBrazil
Spotter Required
It was a very simple process. Just note that the axle lock washer has tabs that should be bent into the two groves of the lock nut. As you tighten this nut two tabs will fit on one side. I used a punch to tighten this nut to remove bearing play-not too tight. You can remove that big plug to tap out the upper gear if the bearings are snug. I also added the steering strengthener like Woody and Wong.. That sounds like a restaurant 
Last edited:
Blase
Spotter Required
Can anyone confirm that the internal splines on the upper gear for both the 10K and 12K are 32 spline? I think they are but can't 100% confirm that. Also is that the same pressure angle as the 32 spline on a T-case output?
Cracksrubi
Spotter Required
Can I ask a dumb question? Cause I can’t seem to wrap my brain around this. If you run a rear engine setup do you run high pinion stuff or do you have to flip load pinions still?
Front Engine = Flip Diffs
Rear Engine = Standard Orientation Diffs
Front Engine from front view, engine and driveshafts (in forward) spin clockwise, this needs diffs flipped so the 2 gear portal output is correct
Rear Engine from front view, engine and driveshafts spin counterclockwise
Rear Engine = Standard Orientation Diffs
Front Engine from front view, engine and driveshafts (in forward) spin clockwise, this needs diffs flipped so the 2 gear portal output is correct
Rear Engine from front view, engine and driveshafts spin counterclockwise
Was talking to a supplier and apparently wilwood has discontinued the above calipers and replaced them with PN 120-13843Brakes
JHF portals: standard with Wilwood Forged Dynalite calipers and Wilwood PolyMatrix E 5E-6096K pads. Rotors are laser cut steel
Wilwood Disc Brakes
Part No: 120-6818, calipers, dynapro, dynapro 6, big brake, dynalite, dynalite pro, forged dynalite, d52, superlite, sl6, sl4, tc6r, promatrix, w6ar, rotorswww.wilwood.com
JHF Trail chassis: standard is a single 1-1/8" Wilwood Compact Remote Master Cylinder (mounted under the drivers seat)
Wilwood Disc Brakes - Master Cylinders: Compact Remote Master Cylinder
Wilwood makes a wide assortment of small, lightweight master cylinders that are suitable for high performance street and racing applications and they are available in a variety of bore sizes. This page displays Master Cylinders: Compact Remote Master Cylinderwww.wilwood.com
Has anyone used these new ones?
pennsylvaniaboy
Spotter Required
- Mar 6, 2017
- 81
Looks like an "improved" design with no spacers