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Baja Forums -:- VW Volkswagen Bug, Baja, Bus, Sandrail and Thing -:- VW Volkswagen & Baja Bug General Discussion -:- My Hi Jumper Buggy
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My Hi Jumper Buggy
Bug, Baja, Thing and Buggies. Most every thing that will not fit any any other area. See list of other Forums for better topic placement...Volkswagen General Discussion
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MojaveRacer208
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Post Post subject: My Hi Jumper Buggy
Posted: Thu Jan 20, 2011 09:31 AM
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After running across Wheel_Works Hi Jumper in his photos of his progress on his Baja under "what did you do to your buggy/baja today? " I was going to PM some other photos of my Hi Jumper to him. But I decided that others might be interested. So here are a few old race photos of the car.







The car and I (and as you can see, a few friends, won a Championship in 1983 with AMSA, racing in the California Mojave High Desert in an unlimited class.


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perrib
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Post Post subject: Re: My Hi Jumper Buggy
Posted: Thu Jan 20, 2011 03:20 PM
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Congradulations on the win. Nice pictures. What were the rail's specs.

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thext94
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Post Post subject: My Hi Jumper Buggy
Posted: Thu Jan 20, 2011 05:22 PM
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That thing is really cool, I've always wanted one

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MojaveRacer208
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Post Post subject: Re: My Hi Jumper Buggy
Posted: Fri Jan 21, 2011 06:50 AM
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Starting off for a 1st in the 83 AMSA 12-hour race at California City which clinched the Championship!


Passing a 2180 dual carbed chromoly frame car on the way to 2nd the next year (would have been 1st again if not for the co-driver endoing the car 25 miles after this photo) And I talked to the owner/driver of this orange car and his partner last weekend at the Glen Helen Baja Cup race.


California City 250 84 - 1st in class. Subfreezing temps!


At my buddy's shop a few years ago ready to head out with a bunch of others on a run in the neighborhood desert.


Passing our Hodge Road remote pit straight toward the setting sun in the 80 Fireworks 250. 115 degrees in the shade. The Parker Pumper helmet made it livable. 1st overall that day was the single seat buggy at the bottom of the front cover of the Hibbard book. I beat that same car in 84.


The specs are...
- Hi Jumper Ascot I frame with Hi Jumper fiberglass body panels
- Reinforcing added near beam mounts
- 'X' added from top front cross member to front of cage
- 1-1/2" diagonal in cage behind seats per SCORE rules
- Motor mount brace straps 1/4" x 1-1/2"
- additional 1-1/2" fork brace tubes ahead of axles
- Horseshoe shock mounts
- 1" x .065 nerf bars in 1-1/4 x .120 sockets
- Hi Jumper 3/16" steel trans skid plate welded on
- 1/8" diamond plate skid plates
- floor pan of 1/16" 6061
- roof of 1/16" 6061
- firewalls of .035 6061
- added "defender bars" on rear bumper of 3/16 x 1" strap
- Rear suspension
- Sway-A-Way 27mm short Torsion Bars
- Sway-A-Way adjustable spring plates
- 8-1/4" rear travel
- Spring Plate retainer straps
- 2 KYB 5530 shocks with cans removed
- 1 KYB 5529 shock on stock mount with cans removed
- Front Suspension
- 65 VW beam cut and rotated 5/16"
- 12" tall shock towers (measured form top of beam top tube to
shock mount (typically called "8" towers)
- 10" front travel
- KYB 5530 shocks with cans removed
- gusseted front arms
- bump stops welded on towers with sway-A-Way snubbers
- 1" x .250 droop stops welded on towers between arms (later removed)
- Wright "Beefed" spindles
- Sway-A-Way Hardened link and king pins and bushings
- Swingaxle Type 1 gearbox built by Jim Sheehan of Offroad Outfittters
- 4.37 R&P
- Welded 3 & 4th spacers
- Shotpeened gears and shafts
- Close ratio 3rd (1.48) and 4th (1.14)
- hardened steel shifter rings
- ORO Differential girdle
- Polished long spline long axles
- Sway-A-Way hardened Axle thrust spacers
- Engine:
- 1835 Type 1 engine
- VW "Universal" case
- Mahle forged and balanced 92mm pistons
- 9.5:1 compression ratio
- Pump gas with octane booster
- Single Weber 40DCNF on CB independent runner manifold
- Norris 336S cam
- Elephant Feet adjusters in machined Type 1 rockers
- chrome moly pushrods
- Dual Port heads with 3-angle valve job
- Norris dual High Rev valve springs and matching retainers
- Gene Berg pressure relief oil pump cover
- 10lb flywheel
- Kennedy 1,700lb clutch with Kennedy Heavy Duty solid center disc
- TriMil 1-1/2" header
- Fiberglass seats later replaced with poly seats
- Deist 5-point harnesses
- No gauges
- VW early 60s Bus master cylinder with reservoir
- Jamar Park-Loc
- 65 front brakes with Frendo metallic shoes and Sway-A-Way studs
- 5-Lug Type 3 rear brakes with Frendo metallic shoes and
Sway-A-Way studs
- 15 x 5 5-spoke"Jackman" style front wheels with 6.70-15 Cooper
Traction tires
- 15 x 8 5-spoke"Jackman" style rear wheels with 33 x 9.00-15
SandBlaster tires


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MojaveRacer208
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Post Post subject: My Hi Jumper Buggy
Posted: Fri Jan 21, 2011 07:00 AM
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That should keep you guys reading for a while~!!!


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Wheel_Works
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Post Post subject: Re: My Hi Jumper Buggy
Posted: Tue Jan 25, 2011 04:49 AM
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Glad I could respark some interest in your car

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Wheel_Works
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Post Post subject: My Hi Jumper Buggy
Posted: Sat Feb 26, 2011 02:32 PM
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Thanks for posting these pictures. Ordered 3X3 rear arms and 2X2 fronts. Will also be ordering a Saco Rack here real soon. I will share pictures real soon here of the car.

I'm Deep into my Baja project rite now also

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MojaveRacer208
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Post Post subject: My Hi Jumper Buggy
Posted: Sun Feb 27, 2011 07:50 PM
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Yeah, I noticed your HiJumper off to the side in looking at pictures of your Baja project. Cool Baja. I'm glad to know that there is more offroad opportunities in MI than just Silver Dunes. Living here in the Mojave Desert there are many offroad opportunities, though nothing compared to 40 years ago. A few years ago some offroaders from this little town in the desert moved to the Tennessee/Kentucky border area and after having sold their offroad vehicles here and moved, they learned of many trails in their new area and regretted having sold their buggies and such.


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Wheel_Works
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Post Post subject: Re: My Hi Jumper Buggy
Posted: Sun Feb 27, 2011 11:25 PM
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I had the Ecotec in my Baja today and Back out. I have a 10* front mount on my trans and I have to remove it. Motor sits on a Viscous angle. Kind of worried about the Oil sump.

We have alot of trails and the system is gettting better. We ride the snowmobile trails alot too.

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MojaveRacer208
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Post Post subject: Re: My Hi Jumper Buggy
Posted: Fri Mar 25, 2011 11:06 PM
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Wheel_Works wrote:
I had the Ecotec in my Baja today and Back out. I have a 10* front mount on my trans and I have to remove it. Motor sits on a Vicious angle. Kind of worried about the Oil sump.

I personally would opt for a more level installation. That may be achievable with some modifications to the 10* mounts.

My HiJumper and probably yours was built with the whole torsion and forks rotated to 6*. Most people who were not original buyers seeing the info put out by the builder are entirely unaware of it. Most original buyers never paid attention to it.

Here is a link to a discussion on another forum about converting an Ecotec powered Baja from a bus gearbox to a Weddle HV-1 where he discusses engine/trans mount angle. It hasn't been raced since the conversion yet, but I think it will work out excellent.

www.desertrides.com/fo...;mode=view

The group includes some VERY bright and friendly people, some of the others are doing a similar swap on their own cars. If you have specific questions about it, I'm sure you'll get the info you need.

www.desertrides.com/fo...mp;t=11149


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Wheel_Works
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Post Post subject: Re: My Hi Jumper Buggy
Posted: Sat Mar 26, 2011 03:33 AM
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Thanks. I'm a member over there also. Thats a sweet car. Thats what my next car is gonna look like. Been watching the Crumco car that have been popping up as builds all over the boards. Looks like the best bang for the buck out there.

Been working on the Baja and the Hi Jumper @ the same time.

I did notice the torsion was turned up, just didn't know how much. I got the 3X3's on and will be picking up the 2X2s on Sunday

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Post Post subject: Re: My Hi Jumper Buggy
Posted: Sat Mar 26, 2011 03:34 AM
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Link to some Baja Pictures
www.thesamba.com/vw/fo...p?t=453162

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Wheel_Works
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Post Post subject: Re: My Hi Jumper Buggy
Posted: Wed Mar 30, 2011 12:08 AM
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I put the new 3X3's on my sons car, my fears were confirmed. With the 6* torsion it actually lowers the rear of the car and limits it to 6" of travel now. I cut the lower parts of the spring plate stop off and did some grinding in there. He has type 4 CV's. Sitting @ 22 * on the cv's he now has 12" of usable travel. Now I'm worried how the tires are gonna sit when all said and done.

We love this car, might actually cut the torsion out and put a aftermarket Cromolly one in @ the proper angle. It's gonna be alot of refab work back there to do it rite. Now really sure it's worth it. I could also cut the inner pivots out and move those so the wheels will sit correctly all the way through the suspension travel cycle.

What size rear arms are you running? Any Experience with anybody else and these problems?

Thanks.
Rich

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Post Post subject: My Hi Jumper Buggy
Posted: Sat Apr 02, 2011 05:08 PM
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Richard what you think? Had to clearence the Housing alot
3X3 arm on car

+4 beam/15" towers, 2X2 arms and beafed spindles and arms on. Saco R&P sitting on the bench

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Post Post subject: Re: My Hi Jumper Buggy
Posted: Sat May 11, 2013 07:08 PM
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anybody have any pictures of stock Hi Jumper nerf bars? Im getting ready to build some for my sons car and wanna Duplicate Hi Jumpers as best as possible.

THX,
Rich

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