LamboClone - The Premier Site for Lamborghini Replica Builders

Build Diaries => Diablo => Topic started by: 01Lambiero on August 08, 2012, 07:29:02 PM

Title: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on August 08, 2012, 07:29:02 PM
Man, it's been ages since I started this so I'm going to have to hunt up the pics.  Here goes.
1)  First I picked out a loser Fiero to cut up.
2)  I stripped off the body exterior panels and removed the doors.  Rear view of stripped body.
3)  Fiero cab braced with tubing to prevent sagging.  Roof was cut off.
4)  Rear chassis is cut off behind firewall and removed.
5)  Alignment jig on floor.  Once the jig is fastened on the floor, the chassis will be centered and anchored in place to the jig.
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on August 08, 2012, 08:30:54 PM
1)2) My Diablo body is suspended overhead, held up via nylon rope and a boat winch.
3)4) I cut off the outer rockers and clamped 2x3 rectangular tubing to be welded.
5)  Vertical support tubing for the firewall is added to the rocker tubing

Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on August 08, 2012, 09:14:16 PM
1)  I made the floorpan support bracing from 1x3 rectangular tubing and welded it to the floorpan.
2)  "X" bracing installed.  Why didn't I clean and paint the floorpan prior???  Aaaah, hindsight is sooooo gooood.
3)  I welded the cross bar to connect the firewall supports.  You can see the rear section tubing on the "X" bracing at the bottom.  You can also see my centerline wire and plumb bob.  Just trying to keep it going in one direction.
4)  In this pic you can see that I connected the chassis to the jig at the Fiero cradle mounts.  I positioned my '99 Cadillac engine cradle to achieve the wheelbase and centered.  It is also spaced off of the floor to the ride height needed.
5)  I welded in the 2nd piece of cross tubing on the rear of the firewall.  It also connects to the vertical side tubing.
6)  I welded an additional 2x3 tubing on each rocker to brace the previously installed vertical piece.  My lower tubing hoop is installed and the pads for the cradle mounts have been welded in.
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on August 10, 2012, 10:31:21 AM
Pic #1     I installed my bare block and trans for placement and clearances.
Pic #2     I started cleaning up my struts and building necessary components.  Mustang Coil over parts fit nicely.
Pic #3     Here are my home made strut tower caps for the Cadillac struts.
Pic #4     This view show my little jig to position the struts at the proper angles to weld the caps to the framework tubing.  The strut is positioned at mid-travel for this operation.
Pic #5     You can see the additional bracing that has been welded into the rear tubing for strength.  Additional pieces will be added later as I see the need.  The top of the firewall has had rectangular tubing welded all the way laterally to the right side.



Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on August 10, 2012, 10:45:20 AM
Now we will move to the front suspension and the work to install the Wide Track Held Suspension and the C-4 brakes.
Upper Coilover bracket area cut and trimmed for new bracket.  No, that is NOT RUST.  It's Michigan GOLD.  I had a lot of cleaning up to do and then "Rust Stop" was applied before I sprayed it with epoxy gloss black.

Pic #2:  Upper coil-over shock mount
Pic #3:  Upper coil-over shock mount
Pic #4:  LF suspension installed
Pic #5:  Front rotor cut down
Pic #6:  Caliper Adapter installed; dust cover to be replaced later
Pic #7:  Mods to spindle before caliper adapter was installed
Pic #8:  Rotor and Caliper trial fit
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: SchulzeA on August 10, 2012, 06:01:09 PM
What spring rate are you using on the front coil overs? Is that a South Bend lathe?
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on August 10, 2012, 06:25:29 PM
Front, 400#; Rear, 500#.  My lathe is an Atlas.  Thanks, Jim
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on August 10, 2012, 06:55:39 PM
Pic #1) My Firebird '99 power steering rack and pinion unit.
Pic #2  Due to body interference, I moved the rectangular 2x3 that comes up from the rocker to the inside of the rocker
           support tubing.  This connects the rocker to the door hinge support lateral brace which runs across the top of the
           dash and heater box.
Pic #3  Joint of lateral hinge support bar to rocker connector.
Pic #4  My roll cage tubing.
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: usmc_butler on August 13, 2012, 09:33:44 AM
Very Nice!!!! ::beers
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on August 13, 2012, 09:09:36 PM
I thought that I might try to make my own center caps on my lathe.  Here is the finished product with an Ebay Bull sticker on the cap.  I evidently chose the wrong type of nylon as the nylon was not flexible enough and the tabs broke off during installation so glue was used.   :'(  Live and learn.
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on August 13, 2012, 09:25:18 PM
During my O/H of the '99 4.6L Cadillac, I installed steel thread inserts in all of the main bearing bolt holes.  I also studded the cylinder head bolts, and the normal O/H things like rings, seals, resurfaced the heads, ground the valves etc.

Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on August 13, 2012, 09:45:24 PM
My choice of a fuel cell.  15 gallon.  Enough for me.  My MSD fuel pump.  My battery box to be located in front of the RR wheel well.
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on August 13, 2012, 09:49:58 PM
I looked my work over and decided to add a gusset here and there, added a brace or two, gotta have a solid framework.

Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: italianknightrider on August 13, 2012, 10:42:46 PM
very nice job ,fantastic work on the custom rear section  ::thumbup
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: No Bull on August 14, 2012, 03:45:04 AM
Very nice Jim, your focus on the small details really sets you and your build apart from many others. 

I'm looking forward to a ride someday.   ::LAMBO2 ::bounce

Chris
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: usmc_butler on August 14, 2012, 07:57:12 AM
Again, you do very nice work ::thumbup as bull said your attention to detail is fantastic ::beers
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on August 20, 2012, 07:59:18 PM
Thanks, USMC.  When did you serve?  ::salute      You gotta check out my mufflers  ::thumbup

Jim

Ya gotta have straps.
Ya gotta have a hanger cage for two mufflers.
They look like pigs in a poke.
Nice n tidy hangin in the chassis.  My exhaust pipes ended up being 12" long
Rear view of the car w/mufflers installed.  Yes, I did remove my rear bumper.  GTRs don't need em.
What ya think?  Startin to look mean!  Jim
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: autopro on August 20, 2012, 08:41:06 PM
Heck yeah that looks good and wicked  ::headbang
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: usmc_butler on August 24, 2012, 10:16:32 AM
How did I miss that last post with the mufflers in it ::scratch! Holy Smokes Great Job ::beers Looks fantastic!

I was in the Marines from 99-05 and USAF 06-5/2012 glad to be finished OR glad they finished me I guess I should say ::tongue
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on August 28, 2012, 02:08:23 PM
On to my radiators.  Honda civic radiators, mounted in series.  Here's my framework.
Got my frame welded in.  Now, where did I put those radiators??
If I wanted to part with money that I don't have, I would purchase the custom radiators that are the cats meow.  However, I'm going cheap.  True, they would probably cool better if I moved the inlets and outlets.  We'll see on that and watch the water temps with my laser thermometer.  It is really starting to look like a Diablo. ::bounce ::bounce ::bounce   Jim

Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: usmc_butler on August 28, 2012, 03:16:52 PM
Once the radiators are mounted! It really starts looking like a car! Great work!
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: italianknightrider on August 28, 2012, 10:55:25 PM
very clean an the space left between will hide any metal/steel when the rear trunk opens up ,i like it
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on February 19, 2013, 03:03:57 PM
It's February and it's time to get back to finishing my car OR maybe NOT today. :'( :'( :'(

Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: rodrieguz on February 19, 2013, 06:37:20 PM
Nice fab work there Jim,  ::headbang ::angel
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on May 23, 2013, 10:50:17 AM
OK, the snow melted and I decided to get back on the build if I was going to make the Carlisle Show in May.   AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAggggggggggggggg!!!!!!  It is so amazing how fast time flies when you are in a hurry.  Let's see what is on my "to do" list. 
1) Install heater hoses and radiator hoses. 
2) Install power steering lines. 
3) Install trans cooler. 
4) Tidy up all wiring. 
5) Remove surface rust and paint. 
6) Install drivers seat. 
7) Install purge tank. 
8) Install upper front shock mount strut bar. 
9) Bleed brakes. 
10) Fab rear spoiler mount. 
11) Fab rear spoiler and cover with carbon fiber vinyl. 
12) Fab GTR console switch panel.   
There were other things also but these were priority items to make the chassis look good and needless to say, I was extremely low on energy by the 2nd week of May.
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on May 23, 2013, 11:07:11 AM
Now, regarding the 72" rear GTR spoiler...........This was my first fab of a rear spoiler and MY LAST!!!  Then it was time for the 12 hour enduro ride to Carlisle but boy was it worth it!!! ::sun ::thumbup ::headbang ::LAMBO  Jim
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: BigPines on May 23, 2013, 11:18:42 AM
Wow! Very impressive! You are truly an artist. Great job!
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: autopro on May 23, 2013, 02:24:00 PM
Now, regarding the 72" rear GTR spoiler...........This was my first fab of a rear spoiler and MY LAST!!! 

Wow great job on the wing, can you make me one???? ::tongue

Is there a special reason you mounted your radiators sideways?
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on May 23, 2013, 03:18:47 PM
The radiators mounted sideways fit the rear openings better and give it the OEM look.  Thanks, Jim

and NO, I never want to make another wing unless.......!  Sadly, I wasted $72 worth of vinyl wrap thinking that I could put it on myself.  You will never know what you can or can't do until you at least try.

01 Jim
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on May 24, 2013, 07:12:59 AM
ps:  The aluminum spoiler must be primed with "self etching" primer prior to painting.  This helps the paint adhesion.  Total weight of the wing completed was around 12#  Jim
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: rodrieguz on May 24, 2013, 08:04:50 AM
Great job there Jim,

Quick ? What seat model/manufacturer are those GTR style seats? 

Are you going for the full GTR look?
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: Nitemare on May 24, 2013, 08:42:49 AM
says it right on the seat: Bride, low max
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: AdrianBurton on May 24, 2013, 02:43:52 PM
Jim,
I hate that I had to miss out on the show, but I WILL be ready next year.

I noticed that you have your cooler upstream from the rad, if you dont mind me making an observation.  I would suggest moving it closer to the rad, otherwise you run the risk of it being rendered useless unless you seal the air box to it, then it becomes a great source of restriction in your airstream.

Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on May 24, 2013, 07:30:57 PM
Rodrieguz:  Not a full GTR look but 85%.  I want it street legal.  No rear bumper, Straight wing, GTR console, plain interior, modified front grille area w/park lights, fuel ports, air jacks, and hood pins.

Adrian:  I intend to box in the upper quarter vent inlet to the LH radiator including the AT cooler.  Air will flow thru and around the cooler in route to the radiator.  I don't plan on any long trips but will monitor the temps.  Jim
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on June 02, 2013, 12:04:26 PM
A couple of additional pics from the 2013 Carlisle Show/Lamborghini Area.
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: eddie on June 02, 2013, 06:36:20 PM
Jim ,no offence but how much cfm the fans are pulling? most of us us Spal fans.
http://www.kitcentral.com/index.php?name=PNphpBB2&file=viewtopic&t=10706&sid=d17ff009ed4a4dbaa07014543aa536e3 (http://www.kitcentral.com/index.php?name=PNphpBB2&file=viewtopic&t=10706&sid=d17ff009ed4a4dbaa07014543aa536e3)
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on June 02, 2013, 09:52:44 PM
Eddie:  No offense taken.  The choice of the performance of cooling fans is up to the builder.  With a proper cooling system, most fans do not run during highway speeds.  Fans will run at slower traffic speeds/city driving when the cooling ability/heat transfer of the radiators has been reached at system limits.  The CFM of your cooling fans must be increased in a ratio to the thermo efficiency of your radiators, thus the need for higher volume fans.  Since I have just recently got my system operable, I will have to monitor the temps and possibly purchase the Spal fans as you have suggested should the need arise.  Thanks for for the valid point. ::thumbup  Jim 
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on May 20, 2014, 10:10:43 AM
Here are some progress pics of my work to have something of value to take to Carlisle.  (1-2) my spoiler standoffs which had to be raised 3".  (3) my wheels widened 2.5" for the rear.  (4-5) my feeble attempt to recreate a GTR engine cover.  (6) the way that she looks today 5/20/14.  Jim
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on May 26, 2016, 02:56:47 PM
Milling the "Fuel Ports"
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: lp670mike on May 26, 2016, 04:12:19 PM
Wow awesome work! How did I miss this build? ::thumbup
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: autopro on May 26, 2016, 11:13:07 PM
You do excellent work, your craftsmanship really shines through.  You should show it off more often :notworthy
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: lp670mike on May 27, 2016, 08:35:02 AM
I just went back and read through your build. Your chassis work is awesome! :notworthy I am beginning the tube framing process on my build now and got some great ideas from yours.
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on May 27, 2016, 08:42:24 PM
Thanks, guys for your much needed support ::thumbup ::thumbup ::thumbup
If anyone is traveling on I-76 in PA. and see a square piece of fiberglass beside the road, please pick it up.  I lost my front trunk lid while hauling to Carlisle.  I do hope that no one was injured by it.  I didn't tape it down as the car had a cover on it and was tarped.  Strange things seem to happen in Pennsylvania.  >:( :'( ::LAMBO

Jim
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: lp670mike on May 28, 2016, 05:00:29 AM
Jim do you know where abouts on I 76. I am about an hour east of Carlisle, I can take a ride and look.
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on May 28, 2016, 09:20:02 AM
No problem, Mike.  Somewhere between Pittsburgh and Carlisle.  I didn't know that I had lost it until Friday morning.  I'll just make a new one.  Thanks for the offer.
Jim
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: lp670mike on May 28, 2016, 02:16:32 PM
Alright that's a pretty good stretch there lol.
That could be a needle in a hay stack. Lol
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on June 27, 2016, 10:36:08 AM
Oops!  Forgot to include my rework on the taillights prior to Carlisle Show.  01
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: CCIE on June 27, 2016, 12:26:55 PM
Lambiero,

Nice CF tail light Bezel.... Did you cut that out and make it in CF or is it just an overlay and the bezel is still part of the car.
What and how may I ask you did.

Thanks
CCIE
PS Awesome work
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on September 18, 2016, 11:03:27 PM
Nope!  I was in a hurry so I just painted it flat black.
01
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on September 18, 2016, 11:09:55 PM
I wanted to make my wheels "appear" to be a "One Nut" racing type.  I modified a bilge pump hull fitting to make do.
01

Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on January 26, 2017, 02:31:03 PM
Meanwhile back at the ranch after losing my front lid somewhere in the mountains of Pennsylvania:  I purchased a "new" lid from a guy on Craigslist.  I sent him the money and he sent me a poorly packaged lid (see pic of damaged lid).  When contacted, we settled on $40 for my rework and repair on the lid.  Anybody receive a check for $40 in their mail and don't know why?  Please send it to me.  Thanks
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 76mx on January 26, 2017, 08:27:00 PM
Crap like that is irritating to me. If you will pay for shipping, I will make you a correctly done hood for a sixpack.
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on June 22, 2017, 11:21:00 AM
76mx:  Six-pack??  Don't you have a Bow-Flex yet?  Thanks and a tip of the hat to RT for sending me the inner front lid panel.  What a guy to help out.  Just a small bump in the long road.  One more item on my bucket list.

01
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 76mx on June 22, 2017, 02:44:20 PM
76mx:  Six-pack??  Don't you have a Bow-Flex yet?  Thanks and a tip of the hat to RT for sending me the inner front lid panel.  What a guy to help out.  Just a small bump in the long road.  One more item on my bucket list.

01

Yes, I thought that was pretty standard currency in the hot rod business. What is a BowFlex? Must be one of those computer things that I am electronically challenged with.
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on April 02, 2022, 04:34:45 PM
I got real busy as a trustee at church.  5 years of repairs etc.  Priorities limited work on the replica.  I thought that I would post what little work I continue to do.  Wiring up a Cadillac engine to the Fiero has been challenging to say the least.  The Cadillac has the backup lights controlled by a module in the trunk.  X nay on the trunk module.  The neutral safety switch is mounted on the transaxle works as required.  To control the leds in the dash for my PRND321 I am in the process of making a control switch which will mount on the Olds Aurora shifter.  I modified the shifter to control the rear mounted transaxle in the rear of the chassis.  I used a pc board with brass buttons to activate the LEDs on the dash.  The Reverse contact will be wired to a relay to operate the backup lights.  Baby steps.
01
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: lambobuilder on April 03, 2022, 08:11:09 AM
Love the innovation of the builders on this forum. Great job!  I remember wiring the Northstar to the Fiero harness. Learned a lot.
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on April 04, 2022, 11:39:52 PM
Yeah!!!  Love that Cadillac wiring splice.  The saying goes "A Cadillac is a computer with 4 wheels".  Over 150 wires run behind the engine and enter the dash behind the glove box.  Just don't cut the wrong wire.

01

Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on March 15, 2023, 11:09:10 PM
Northstar Mufflers:  Here is my previously installed mufflers.  I switched to the GTR mufflers later on.
01

Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on March 16, 2023, 09:58:01 PM
Fiero stock spindles: Corvette C-4 rotors and calipers.  The Fiero rotors need the outer brake area machined off.  DO NOT CUT THEM WITH A TORCH! (it causes hard spots that are hard to remove).  If you use spacers, you will need longer studs.  The hard part of the conversion for me is machining the outer surfaces flat where the caliper adapter bracket bolts on.  I have been working on a plan to utilize a die grinder fastened to the Fiero rotor.  Plans to follow (old technology from the 90s guys).  The pdf file shows the dimensions for the centering ring and the caliper adapter plate.  Some of the instructions in the pdf do not apply.  Ingenuity is manditory in this business.
01

Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on March 16, 2023, 10:10:01 PM
Additional files on how I plan to true up the alignment of the calipers to the rotors.  Additional files for concentric ring and adapter plate dimensions.

01

Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: Lambo2005 on March 20, 2023, 07:24:33 AM
Thanks for the drawings. Just to clarify whats going on here.
1)It looks like you have taken the Fiero rotor and machined off the actual brake surface leaving just the center housing for the bearings and the studs for the lug nuts.
2)You are resurfacing the mounting surface with a grinder to true up the face for the adapter plate? Are you removing much here? Isnt it already perpendicular to the spindle?
3)You attach the adapter bracket to the new faced off surface?
3)Then you have to redrill the 5X100 bolt pattern into the Corvette rotor
4) Then you slide the Corvette rotor over the machined Fiero rotor
5)Attach the corvette caliper to the adapter plate.

I am assuming this is the process please let me know if I'm wrong. Also how do you know the caliper is centered on the rotor after grinding? Or are you just barely touching off that surface? I assume the adapter thickness of 0.875 is important to centering the caliper on the rotor. 

Also I'm not planning to use wheel spacers so hopefully you only are to get the correct offset and its not needed to clear the wheel?
Sorry for all the questions but I appreciate your help the pictures are very helpful.
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on April 10, 2023, 12:03:02 PM
More answers:
1: I made my own caliper mounting adapter using the dimentions from the diagram.
2: It is necessary to true up the adapter mounts on the knuckle as the Fiero caliper mounts to the inside of the arms and the Corvette adapter mounts on the outside of the arms.  (I plan to do this procedure this summer)  I purchased a new Fiero front rotor from Rock Auto ($15) to make the mount for the die grinder.
3: The Fiero rotor brake surface is removed from the hub.
4: The machined ring centers the rotor on the Fiero hub.
01
5: Your wheels must have the Fiero bolt pattern.
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: Lambo2005 on April 11, 2023, 07:01:13 AM
Yeah I plan to do mine in the next few months too. I still have my old rusty Fiero rotors and I plan to modify one to also do the grinding like you specified. You said to true it up. So I assume your not taking off much material. Just removing the rough cast surface getting to a nice smooth mounting surface? Then I'll cut that rotor surface off basically making it a hub. So as for the Corvette rotors they will need to have the 5X100 bolt pattern drilled into those rotors correct?
I assume this will all fit inside the 18" wheel.  I bought the Comp Lamborghini replica wheels that are 18" with the Fiero bolt pattern.
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: Lambo2005 on May 05, 2023, 09:26:31 AM
Okay so I have the two machined brackets made to the drawing you provided and I machined the mounting surface flat and true. Also machining the Fiero Rotors to remove the braking surface leaving just the hub with studs.
I have one question as I have tried to buy the C4 caliper bracket.  C4 covers years from 84-96.  What year C4 should I be using because I found a bracket for a 89 and then put in 86 and the site said it would not fit. Did they change the brakes on the C4 somewhere between 84-96?
Anyway just need to know what year your adapter plate was made for. Thanks



More answers:
1: I made my own caliper mounting adapter using the dimentions from the diagram.
2: It is necessary to true up the adapter mounts on the knuckle as the Fiero caliper mounts to the inside of the arms and the Corvette adapter mounts on the outside of the arms.  (I plan to do this procedure this summer)  I purchased a new Fiero front rotor from Rock Auto ($15) to make the mount for the die grinder.
3: The Fiero rotor brake surface is removed from the hub.
4: The machined ring centers the rotor on the Fiero hub.
01
5: Your wheels must have the Fiero bolt pattern.
Title: Re: Diablo6.0 Build Diary by 01Lambiero
Post by: 01Lambiero on May 05, 2023, 03:50:29 PM
Stock 84-87 Corvette calipers and mounting brackets.  The "special" adapter plate mounting bolt needs to be ground flush to the adapter plate.  See pictures.  I trimmed the rear rotor stone guard BUT I'm going to replace them with the full sized guard.
01