How to: Build a Hardbody Pro-IT Series Race Truck

Forum for the Xterra, Frontier and Hardbody, the smaller workhorses of the Nissan lineup!
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Rev_D21
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Car: 1986.5 D21 LB HD 2WD V6 5Speed
1991 D21 Reg 2WD Auto
1995 D21 Reg 2WD 5Spd
1996 D21 Reg 4WD 5Spd
2012 Versa 1.6S 5-Speed
Location: Somwhere in Western NY
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Ever see these trucks?
Image

Nissan ran several factory built D21 race trucks in the late 80's and early 90's in the Coor's Racetruck Challenge series. Nissan had professional drivers involved with names like Ken Grammer, Jeff Krosnoff and Ray Kong, among others. Nissan had an impressive winning record throughout the series. I have been doing some research into these racers and trucks as I have time. This thread contains those findings along with the help of NICO members contributing information to help paint the picture for everyone to enjoy.

I welcome anyone to get involved. There are grassroots efforts to get the series started again and I hope to contribute to that effort any way I can.


seang
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Nissan HB FTW!

seang
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Here's a racey looking Nissan. It doesn't look like the most hardcore of trucks, but it's still cool [IMG][/IMG]
Modified by seang at 4:11 PM 2/9/2010

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Desert Rat
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that last one is a rare truck.

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lino
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seang wrote:I was talking about the first post pic.

Here's a racey looking Nissan. It doesn't look like the most hardcore of trucks, but it's still cool [IMG][/IMG]
That's sharp and clean!

Drift21_Hardslider
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Still working on mine. Won't say what yet (seeing as hen I do that, they never work out). No desert, no time attack, as a hint.

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Rev_D21
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Car: 1986.5 D21 LB HD 2WD V6 5Speed
1991 D21 Reg 2WD Auto
1995 D21 Reg 2WD 5Spd
1996 D21 Reg 4WD 5Spd
2012 Versa 1.6S 5-Speed
Location: Somwhere in Western NY
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But back to the topic on hand, anyone have any info on the Hardbody in the first post?

seang
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Reverend D wrote: anyone have any info on the Hardbody in the first post?
No, I looked for a few hours and nothing other than whats in the text under the picture itself.

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Rev_D21
Posts: 6897
Joined: Sun Jan 12, 2003 9:49 pm
Car: 1986.5 D21 LB HD 2WD V6 5Speed
1991 D21 Reg 2WD Auto
1995 D21 Reg 2WD 5Spd
1996 D21 Reg 4WD 5Spd
2012 Versa 1.6S 5-Speed
Location: Somwhere in Western NY
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Found the jackpot. THIS is what I want to make of my truck!

Hardbody SCCA Race Trucks


Modified by Reverend D at 7:01 PM 11/5/2009

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Rev_D21
Posts: 6897
Joined: Sun Jan 12, 2003 9:49 pm
Car: 1986.5 D21 LB HD 2WD V6 5Speed
1991 D21 Reg 2WD Auto
1995 D21 Reg 2WD 5Spd
1996 D21 Reg 4WD 5Spd
2012 Versa 1.6S 5-Speed
Location: Somwhere in Western NY
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More:



I know there's a Mazda in there but it looked pretty sweet so I shared it.

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Rev_D21
Posts: 6897
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Car: 1986.5 D21 LB HD 2WD V6 5Speed
1991 D21 Reg 2WD Auto
1995 D21 Reg 2WD 5Spd
1996 D21 Reg 4WD 5Spd
2012 Versa 1.6S 5-Speed
Location: Somwhere in Western NY
Contact:

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One more:


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Rev_D21
Posts: 6897
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Car: 1986.5 D21 LB HD 2WD V6 5Speed
1991 D21 Reg 2WD Auto
1995 D21 Reg 2WD 5Spd
1996 D21 Reg 4WD 5Spd
2012 Versa 1.6S 5-Speed
Location: Somwhere in Western NY
Contact:

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Even more!


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Rev_D21
Posts: 6897
Joined: Sun Jan 12, 2003 9:49 pm
Car: 1986.5 D21 LB HD 2WD V6 5Speed
1991 D21 Reg 2WD Auto
1995 D21 Reg 2WD 5Spd
1996 D21 Reg 4WD 5Spd
2012 Versa 1.6S 5-Speed
Location: Somwhere in Western NY
Contact:

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Rev_D21
Posts: 6897
Joined: Sun Jan 12, 2003 9:49 pm
Car: 1986.5 D21 LB HD 2WD V6 5Speed
1991 D21 Reg 2WD Auto
1995 D21 Reg 2WD 5Spd
1996 D21 Reg 4WD 5Spd
2012 Versa 1.6S 5-Speed
Location: Somwhere in Western NY
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Does the rear leaf look flipped in this next pic?
Modified by Reverend D at 7:46 PM 11/5/2009

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BronkStang
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Hey hows it going guys i figured i would share the info i have found the last few days regarding the old ITT trucks, one of the many "claims to fame" of the hardbody platform. anyway...

It was tough to dig up anything specific about these trucks on the internet (possibly because their heyday was BEFORE the internet!), but luckily i was able to talk to a previous owner of 2 Nissan factory racer's!

he said he campaigned 2 racers in the 97-98 IT Truck series and won championships both seasons! he went on to say the series was fun at the time, and the trucks were like spec miata racers... fast fun durable and cheap! he said they handled GREAT with the nissan racing torsion bars 3 degrees of negative camber for the dot hoosiers, and a simple leaf spring/2 inch drop block (yes blocks) setup! he did add that one of his trucks had fiberglass springs, but it was not any better or worse in handling.

the main "ingredient" was torsion bars, but overall the trucks were very simple. they basically took a stiffly spring hardbody, added the safety equipment and rollbars, ran a 11:1 comp nap-z motor, stock 5 speed, stock driveshaft, v6 front brakes, and went racing!

he said they rode very stiff though so they may have had extra things done like solid body mounts and stiffer bushings etc even though the rules stated that any parts used must be available to the general public, they could not be one off's.

other information from other scca fans point to extra prep as well - they said the nissans had the upper hand over the rangers s10s mazda's and jeeps, especially the old factory racers, because they were really well prepped although other manufacturers had their own prepped trucks too. then again i think the nissans had the upper hand because they were allowed to run high compression...in the rules below i don't see any other manufacturer allowed to do that...hardbody FTW!

heres a link to the it truck rules, gives you an idea of the modifications done to these trucks besides what i postedhttp://www.atlantascca.org/clu...-rule

as for tracking down these nissan factory parts used back in the day, i called nissan motorsports and they still had torsion bars..... two stage torsion bars. after more research i found out they were made for nissan motorsports by jim connor racing way back, and they were most likely off road oriented, although i did find a post from a 240zx fan that said he ran them on a lowered 86.5 truck. basically they had a extra arm halfway down the length of the bar that would touch the frame adding a 2nd stage of stiffness.sounds cool, but most likely this is not what was used in the racers it was probably to stop bottoming the suspension on hard off road conditions. not to mention racers usually like linear rate springs for being more predicatable

so the search for the racing parts continues...

however it would be interesting to run the torsion bars adjusted so that you were only using the 2nd stage...

furthermore, nissan still had 1 inch front sway bars in stock. there are other parts which i will list here but i dont know whether or not they are still available54560-RS910 ALL 2 Hard rubber front lower control arm bushing.99996-2102G ALL 1 Polyurethane rear spring bushing set, 4x4.99996-2103G ALL 1 Polyurethane rear spring bushing set, 2WD.99996-7104G ALL 1 Polyurethane tension rod bushing set.99996-D21BF2 ALL 1 1.0" front sway bar kit, 2WD only.99996-D21BR4 ALL 1 7/8" rear sway bar kit, 4WD only.99996-D21SK1 ALL 1 Steering stabilizer kit includes stabilizer, mounting pin, all hardware and bushings.Requires the use of steering cross rod originally equipped with mounting ears.2WD.99996-D21SK2 ALL 1 Steering stabilizer kit includes stabilizer, mounting pin, all hardware and bushings.Requires the use of steering cross rod originally equipped with mounting ears.4WD.99996-EG800 ALL 8 Polyurethane sway bar end link bushing.99996-T1440 ALL 1 2 stage front torsion bar set, 2WD.<<<<<<<<<<<<<<<<<<<<<99996-T1456 ALL 1 26.5mm front torsion bar set, 4WD only.99996-W4101 ALL 2 Rancho front shock (13.25"/8.69").99996-T5040 ALL 1 Single leaf spring conversion, for 4x4 only. Reduces load capacity but gives<<<<<<these might be the fiberglass ones only difference between 4x4 and 2x4 is the axle mounting

btw i also found out stillen still has its air dam availablehttp://www.stillen.com/product...ICKUP

and they have an awesome closeout sale! guess whats in the list...drop leafs! STILLEN LOWERING LEAF SPRING 86-97 NISSAN HARDBODY PICKUP (EACH) $95.79 $43.36 too bad i bought mine already...http://www.stillen.com/blowout.asp#SU02

overall i still find it surprising that the trucks ran such a simple setup, they had the option of running rear sway bars 1 piece drive shafts offset bushings etc and they didnt.. the setup was really simple and he said the trucks were faster than quite a few cars! i think these trucks have the ability to be little cheap racing beasts, and i can't wait to enter this years autocross events.

i still have other racers to email if i get more info i will post it here. also if anyone has more info please feel free to add.

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Rev_D21
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Joined: Sun Jan 12, 2003 9:49 pm
Car: 1986.5 D21 LB HD 2WD V6 5Speed
1991 D21 Reg 2WD Auto
1995 D21 Reg 2WD 5Spd
1996 D21 Reg 4WD 5Spd
2012 Versa 1.6S 5-Speed
Location: Somwhere in Western NY
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See my 'Hardbody Race Trucks' thread.

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BronkStang
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yea man there were some nice pics in that thread! i saved em all for reference...and drool factor...

seang
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I always imagined the rather soft torsion bars to make the biggest difference to hardcore on-road performance, even more important than horsepower.

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Rev_D21
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Car: 1986.5 D21 LB HD 2WD V6 5Speed
1991 D21 Reg 2WD Auto
1995 D21 Reg 2WD 5Spd
1996 D21 Reg 4WD 5Spd
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Location: Somwhere in Western NY
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Leaf springs are already sold out.

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BronkStang
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i'm waiting for an email from this guy, he still runs ITT.

95hb
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thats dope i wounder what suspention mods they did on those. were did you find those pics

Dj Hentai
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Pretty cool finds here!

There's a few people I know of with SR20 powered 720's that drift them as well. Seen that action on Youtube before.

This one has an RB26 AFAIK.




Drift21_Hardslider
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95hb wrote:thats dope i wounder what suspention mods they did on those. were did you find those pics
I think they were mostly stock, from what I remember from when I was a kid. Improved Touring Truck is now defunct, so for now there is nothing for trucks to race in as a stand alone series.

Here is a forum I just found as well, seems to be trying to keep road racing trucks alive.

http://protouringtruck.lefora.com/

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BronkStang
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the garage minis are sweet with 240sx suspension front and rear, not to mention all that boost...

the it trucks on the other hand, are stock save for some stiffer springs and tweaks etc...

atlanta scca is still running it truck, theres rules posted for 2010 season, but its been dead because theres no new entries.

yes the trucks were basically stock but prepared by nissan. there have been several replacement trucks made with the original parts from the nissan prepared trucks, but thats about it.

ive been emailing back and forth with some of the owners of these trucks for details, we'll see what happens:biggrin

Drift21_Hardslider
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BronkStang wrote:the it trucks on the other hand, are stock save for some stiffer springs and tweaks etc...

atlanta scca is still running it truck, theres rules posted for 2010 season, but its been dead because theres no new entries.

yes the trucks were basically stock but prepared by nissan. there have been several replacement trucks made with the original parts from the nissan prepared trucks, but thats about it.

ive been emailing back and forth with some of the owners of these trucks for details, we'll see what happens:biggrin
So, it is still around. I'm in VA, so the Atlanta SCCA is a bit of a stretch for me. That and I have a S13 240SX that I bought when I sold the D21.

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Rev_D21
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1991 D21 Reg 2WD Auto
1995 D21 Reg 2WD 5Spd
1996 D21 Reg 4WD 5Spd
2012 Versa 1.6S 5-Speed
Location: Somwhere in Western NY
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Bumping old thread because this stuff is important...and this http://www.sccabb.com/forum_posts.asp?TID=8181

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longtooth
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This should be the pic to that link
Image

StephenG
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87 Nissan 200sx CA20E 5spd

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What a bargain!

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Rev_D21
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Car: 1986.5 D21 LB HD 2WD V6 5Speed
1991 D21 Reg 2WD Auto
1995 D21 Reg 2WD 5Spd
1996 D21 Reg 4WD 5Spd
2012 Versa 1.6S 5-Speed
Location: Somwhere in Western NY
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I was half tempted until I saw the age of that thread. 2009...I doubt he still has it.

moneymike
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dang i cant wait till i finish my set up and go tune so i can finish up my suspension then take her to the track :shifter:


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