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Old 08-05-2016, 07:41 PM   #21
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Well everyone thinks it's a cool truck - but no cash has been seen yet.

I have had a chance to do a little more work - fire system installed, Accusump installed, FIA MomoCourse seat installed and I took out the rest of the sound deadening tar from the floors inside the cab. I almost took it up to a recent track day for testing, but realized I didn't have enough brake pad left and no good spares so the truck didn't make the trip.

I have my checklist for the balance of the prep to be "Chump ready" and am working through that in the meantime. I have a ride in a BMW for the Chump race in August @ Gingerman. If a buyer doesn't come along....well...I may just have to race it!
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Old 01-14-2017, 01:56 PM   #22
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So time for some updates. No one has purchased the truck and full scale prep is now in process.

The following have been done:
Brakes replaced front and rear including caliper rebuilds and new rotors
Front wheel bearings repacked/new seals
Shocks removed / cleaned / checked / reinstalled
Gear lube in trans changed
Rear diff lube changed - found damaged pinion - ring & pinion replaced 4.625 LSD in place
New glass front windshield
Front sway bar links replaced / repaired link mount on control arm
New cold air intake (lightweight 4" aluminum w/silicone connectors and insulation)
add electric cooling fan

Currently underway / in process:
Locating a H233B rear end to replace the H190
Complete "do over" of the old front brake cooling ducts
Repair front spoiler and add splitter
Replace lowering blocks on rear axle with 1/4" blocks to allow adjustment
240SX intake swap
Wrap header
Upgrade to 8"-9" wide wheels to allow use of 245/40R-15 tires (BFG just introduced this size in the R1)

Some photos below of the work/suspension/parts:



Interior with new seat, Accusump, fire system, water bottle



Front suspension, sway bar links, cooling duct mount



New cold air intake piping



Rear Axle w/current lowering blocks (only on right side?)



New lowering blocks to allow us to set weights (1/4" thick each)
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Old 01-27-2017, 10:13 PM   #23
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Full scale prep for Chump continues:
1) Scored a H233B axle ('95 D21 V6 - 3.9 open diff - looking for a 31 spline HG46 LSD). I pulled two Pathy units today, both were 33 spline - Ugh!
2) Purchased a set of 17x8 Colorado wheels to test fir 245/40-17 tires - initial look indicated some fender stretching is likely to be needed.
3) Headed out tomorrow (I hope) to pick up a 240SX intake
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Old 05-30-2017, 12:44 PM   #24
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All is not quiet....a few updates:
1) Acquired two sets of 17x8 Colorado wheels (QA8 option on the 2004-06) and fitted them with 245/40-17 Hancooks - they fit great!
2) 4.3 LSD unit for the C233 rear housing has been found, all new seals and bearings for the rear end are waiting for install
3) 240SX intake acquired cleaned up (internally and externally) including new wrinkle paint to match the cam cover
4) 22 gallon fuel cell installed behind rear axle under bed - replaced a 15 gallon cell previously mounted in bed.
5) KYB shocks installed to replace aluminum body Carreras (100pts vs."0" for KYB)
6) Built required seatback brace & installed radio harness & transponder

The truck did go to the Mid Ohio Chump race and got teched and a logbook issued (well under 500 pts). Further discussions with the Chump tech chief clarified we can run any D21 parts (mix & match) as "stock". Since the 21.9 gallon fuel tank was available - we got the bigger cell with no penalty!

I will get some photos as soon as we finish plumbing the fuel system and can roll the truck out of the shop!
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Old 07-04-2017, 10:07 PM   #25
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Update:
The truck moved out of the garage under its own power today with the new 22 gallon fuel cell installed along with the new Chumpcar livery. After a quick wash, it was back in to have some plumbing cleaned up underhood, 240SX intake install and some aero improvements. If all goes well, we intend to debut the truck at the Gingerman Chump race at the end of August. Still lots to do....
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Old 07-06-2017, 10:14 AM   #26
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i am legit diggin this truck, very nice! bring it to australia so i can steal it... please.
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Old 07-06-2017, 03:15 PM   #27
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Lookin' great!
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Old 08-19-2017, 01:43 AM   #28
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It's official - the truck is registered to race at Gingerman AUG 25-26 with Chump Car. I have two co-drivers with experience at the track.

We'll see what happens...
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Old 10-28-2017, 03:24 PM   #29
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I haven't updated this since our trip to Gingerman for the Chump race.
The good: all the stuff we went through worked great!
The bad: all the driveline worked well testing at the local kart track - at speed on a real race track we found some issues. Bad transmission mount - didn't show up till into 4th gear, then we had a driveline vibration. We also finally blew up the old tired motor - and via the teardown found out how "cheaty" it was. Almost 12:1 compression and a VERY modified early 240 block.

Motor is apart, much data collected on the previous build (no data from P.O. was available) but we have "reconstructed" most all that was done. My only regret was not having done a few dyno pulls to get a baseline HP on the previous build (tired as it was).

Plan for a fresh KA24E is in place - just debating whether to pull the trigger or swap another motor...

Chump will bring a 24 hrs race back to Nelson Ledges next year - I want to be there in something (truck preferably).
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