We have written another tech filled Forum Build Thread update that catches us up to current time. In this update we cover a load of work tackled over the last 5 months, between customer builds.
The work in this 3-part update covers the last steps needed to wrap up the cooling system, the oil vent catch can and plumbing, a Lexan back window install, carbon doors and even the new paint applied to the front fenders and nose.
The forum postalso covers the steering wheel quick disconnect – which was a little tricky to be able to make the horn button work. The car also saw several digital dash mock-ups, shifter modifications, and a detailed guide to installing a fire suppression system.
The install of the AFFF fire suppression system was shown in great detail, and we will pull this out into a separate forum post of its own – showing the differences between “race car” and a “street car” fire system installs. Hope you enjoy lots of pictures showing behind the scenes work – if you do, you can dive deeper starting here.
Since everyone is tired of seeing updates to the narrow body C6, we figured it was time to play “catch up” on some customer builds! We are starting with a big update to this 1st gen Cadillac CTS-V track build. In the latest Forum Build Thread 3 part update we catch up with a big chunk of work completed during a hectic part of this build, from December ’20 through April ’21. The Caddy is much further along now (runs, drives, & almost complete), but we like to share the details of our builds, and this time period was an important chapter on this CTS-V.
This round of work included some control arm bushing swaps then the HorsePower Research built 383″ LS6 longblock and T56 went into the car. This update also covers a big portion of the BMW Mk60 ABS swap, which included new brake lines, yaw sensor mounting, and a new brake pedal switch with a unique bracket. Then we cover the new LS7 water pump and ICT Billet manual belt tensioner install, and why we picked those. The existing long tube headers were bead blasted, ceramic coated, polished and installed.
There is considerable ink showing several issues that the installation of a FAST LSXR 102 intake manifold created – including a unique 4 port steam vent, new fuel rails, 102mm DBW throttle body, and even mods to a strut tower brace to clear this thing. Then there were some changes to the fuel system – including a new Radium filter and repairs to the fill/vent hoses for the fuel filling bulkhead are noted.
A big section of the Forum Build Thread update shows the work we did to add massive engine oil and power steering coolers from Derale, plus a remote oil filter from Improved Racing and a new TurnOne power steering pump – and a lot of plumbing. There was a lot of cooling plumbing that was re-done to work with the steeply rolled radiator including a coolant reservoir, new radiator hoses, and a small manifold to deal with the heater hoses and reservoir fill, then stem vent line tie-ins.
In the final section we cover the unique Cold Air Intake system we created with details on routing, air filter placement, a filter box, and the DEI Gold reflective thermal wrap on all of this. There is plenty of more work to show next time, but you can catch up in this round of work on our forum starting here. We cover all of these steps with a lot of detail and pictures, which hopefully gets you inspired to work on YOUR race car. See y’all at the track!
We have been busy improving our dual purpose street / track 2006 Corvette C6 and have tons of upgrades to share and four track events to cover since the July 26th update – click here to read the August 30th update to the Forum Build Thread for this car.
In the period since the last post we have attacked a number of areas that needed improvement, which included: adding camber to all four corners, upgrading the swaybars, another motorsport alignment, built a sim rig (to better learn a new track layout), added a suit cooler system, installed a massive Setrab oil cooler, built a custom Setrab power steering cooler, replaced some items, added an ATI balancer, built an air/oil separator, patched a hole in the inner fender, test fit some calipers, bought another set of wheels, swapped in another seat (then right back out), and added an MGW shifter.
As always, we show all of the steps in that mountain of work listed above, share some tips, and even show some things we did wrong – but we learned from these mistakes and made the car more reliable, easier to drive, and most importantly we made the car FASTER. Two more track tests (#109 and #11 at the same MSR track) showed the car dropped from a previous best of 1:21.9 to a new low time of 1:19.7 on street tires. Two more SCCA Time Trials resulted in two more wins and two “2nd fastest time of the day” in the overall results.
We cover all of this in this 4 part Forum Build Thread update and show hundreds of pictures, videos, data, screenshots of parts we looked at, part numbers, and so much more. And while this narrow body C6 Corvette model is a little unique in some of the problems and challenges it has faced, the testing methods and general build ideas we used can apply to all cars made for track use. No other shop on earth shares as much detail on their competition cars as we do. Thanks for reading!
There have been a lot of updates in the 6 weeks since our last blog post about #ProjectNewBalance, our 2006 Corvette. We are finally at the point – in lap times and money spent – where we can prove that we weren’t completely crazy when we bought this base model narrow body LS2 powered 6-speed manual car versus a Grand Sport (2x the cost) or Z06 (3x to 4x) Corvette of the same C6 generation: we have beaten numerous Grand Sport and Z06 cars in head to head competition on the same tires, with less money spent.
In this massive 4-part Forum Build Thread update we cover work done to this C6 on the following systems: upgraded control arm bushings, ball joints, a “real” alignment done by a Motorsports shop, an exhaust + header + cold air upgrade, a second Corbeau seat install, seat heater circuit, 6-point harnesses, a 3 lb Halon style fire bottle on a quick disconnect, AMB transponder install, and we finally got the Jongbloed 18×11/18x12wheels and 315mm Yokohama A052s installed. Going from our “control tire” 275mm Hankook RS-4s to these 315mm A052s was a BIG leap forward in fun!
This Forum Update also covers two more dedicated track tests (on 3 different sets / types of tires), a Dyno Tuning session, and our first SCCA Time Trial. It also links to two other forum posts where we show detailed instructions on the poly bushings (it was a massive section that we had to peel off) plus another covering our thoughts on SCCA Time Trial rules, 4 years after they were first introduced. We have done even more work, more track tests and another Time Trial event since the last part of that post, but those things will be covered next time. Thanks for reading!
We bought this 2006 C6 Corvette base model 6-speed coupe during the Pandemic – all of the C6 Grand Sports and Z06 Corvette’s used car prices had spiked! This “narrow body” 6-speed car cost half what the cheapest “wide body” C6 was at the time (and they’ve only gone up!) We started off pretty slow but have found SEVEN seconds of track time drop at MSR Cresson so far, and this massive 4-part Forum Build Thread update details 12 months of changes and five track tests during that time!
The Forum Update covers so many changes and updates done to this truly dual purpose street/track C6: a seat upgrade, harness bar, 6-point harnesses, an MCS coilover install, an ABS swap, a carbon front lip upgrade, a baseline dyno run, wheel testing, brake pad swaps, alignments, wheel hub changes.
Not every update we did was perfect, but we share the good and bad in the Forum Update – so you can learn from us, with scientific track test results, what changes make the car faster and which ones do not. These same lessons apply to almost any car you would want to take on track, so reading this might help you no matter if you will ever own a C6 Corvette like this. Cars are all remarkably similar – it is easy to make them slower, but trickier to make them faster!
We have been working with the 86 chassis since early 2012, and our Forum 86 Development Thread has been up and added to for over a decade. In that thread we have chronicled the work on many different 1st generation FRS/BRZ models made over the 2013-2021 model years.
Now we have done work to a 2nd gen 86, this 2022 Subaru BRZ owned by our tester Jon Miller – which has a new chassis with more rigidity, a larger engine with significantly more power, but without any weight gain.
This is Jon’s 4th car to offer up for testing and we recently installed MCS TT1 coilovers, Vorshlag front and rear top mounts, and Jon upgraded to a set of 17×9″ wheels and 245 Falken RT-660 200TW tires. Then Jon let Vorshlag chief memologist Terry co-drive this at an autocross (above, where he and Jon took 1-2 in STR class) and also on track. The coilovers transformed the car and we talk about the work and driving impressions within the latest forum update – complete with in-car video from both events!
Of course we also cover work done to our own 2013 FRS, which we brought into the shop to complete one of our popular LS swaps. Well we got busy in the shop and with the business and have only tackled some wheel testing (not all of it successful), an upgrade to MCS Remote Double adjustable coilovers, some front end work, and the shortblock assembly for the HPR 454″ LS engine – all of which is covered in detail starting here. Every picture in the forum build thread can be clicked for higher resolution, so make sure to read this on the largest screen you can. Thanks for reading!
As busy as we are with customer work, we have managed to spend a few weeks here and there working on our LS swapped 2015 Mustang GT. The past seven months of work on is shown in this latest Forum Build Thread update, starting here.
Many systems on this build have been planned out, parts ordered, built and installed. This includes the big dual 3.5″ exhaust with trunk cutout for massive MagnaFlow mufflers, the oil cooler and oil plumbing, and the fuel tank / surge tank plus vent system and fuel system plumbing. The differential cooler and plumbing is also installed and ready for fluids, the cold air inlet and air filter + airbox are built and grills modified. The radiator mounting, fan and all cooling system plumbing is complete, as are the remote coil mounts, reservoir mounts, and rear bulkhead for the trunk.
The carbon fiber trunk is attached and the remote latch is in place, to join the matching carbon hood and (soon to be installed) carbon doors. We’re trying to get as much weight out of this in the first phase of this build without any cutting – just parts replacement and removal of “fluff”. We should have this one running soon and you can catch up on the last seven months of work starting here. Thanks for reading!
It has been almost eleven months since we updated the Forum Build Thread for our 2006 narrow body C6 Corvette shown here, #ProjectNewBalance. Our latest forum updatecovers a few months of work we tackled in mid-2021.
We picked up in the latest forum build thread update after our second track test still chasing a good “baseline” lap time for the stock suspension, but we had been fighting a nasty ABS issue where the rear brakes locked. In some of our futile attempts to “mask” the poor ABS function we changed from the base JL9 brakes to the bigger Z51 brakes. At the same time we upgraded the radiator (DeWitts) and numerous other cooling system repairs.
In late May of 2021 we went back to test the brakes and cooling issues, but another seemingly unrelated update ruined the handling balance – which is ironic, since we call this one ProjectNewBalance. We talk about that and much more in the Build Thread, starting here.
Vorshlag was very busy working on customer cars in 2021! With the addition of a full time tech/fabricator plus a separate production welder in Fall 2021, this has gave us more manpower in the build shop. Our build productivity jumped and more car work tasks were completed every week with the added help.
This 2004 Cadillac CTS-V is being built for WRL endurance road racing, and as such it will have a variety of drivers and potentially make 100+ passes in a given day. To make sure the aero bits don’t get too expensive to replace we worked with Professional Awesome to spec the right mounting methods for a plywood splitter.
We are in love with their carbon rod front splitter struts, but their Quick Release rear mounts are the next level. With a simple door latch (gold bit above) and cable we can detach the back of the splitter quickly and keep it secure. Mounting is even easier – just clip the mating piece bolted to the back of splitter (black triangle) up into the latch. We built some custom brackets to hold the chassis part of the QR mount that were bolted to the subframe, above.
This Gen II Coyote swapped blue S197 got a giant aluminum splitter, also held in place on the leading edge by Professional Awesome carbon struts. We added two “Tow Hooks” to the tubular bumper beam that double as strut mounts and trailer tie downs.
This splitter was an unusual 2-layer aluminum design with the top layer “windowed” to reduce weight, then bonded to the lower layer, with custom tunnels that feed cooling air to our S197 brake deflectors. Complicated and beefy, this will likely be the last time we make one this way – but it sure is bomb proof!
This wide-body E46 M3 has been on track multiple times but came back to the shop for some final aero work, where we fitted a flat bottom undertray and wrapped up the front wheel spats, which attach to a monstrously large splitter. This was all stripped off, along with driving train / wiring / plumbing, and the car went to “paint jail” in late June 2021. We will have this back soon, painted and ready for reassembly, then off to the track again!
This ’69 Camaro is a familiar one here, with construction stretching back “a few years”. We’re wrapping up on this build, having test driven it already we are just finishing some final touches – like the undertray panels, and some welding / finish work on the front aero structure for the dual plane splitter. The lower splitter will go on next, then we can get the car dyno tuned and track tested!
As we enter our 18th year of doing business here at Vorshlag we’re still doing some of the same aero work we did a decade ago – just bigger and better than before. Stay tuned for several more “big aero” work at Vorshlag in 2022!
After a 13 month gap in coverage we have caught up the Forum Build Thread with work done on our #LS550 test mule race car we call #Trigger – an LS swapped 2015 Mustang GT. This update covers all work from July through December 2020, then pics up on the the work again when we restarted this project in August 2021. This is a rather large forum update, with 100+ pictures and some video, which you can read here. Warning: you might want to grab a drink and some snacks, and open this on a laptop of PC to see the high resolution pictures, all of which can be clicked and expanded.
In the latest Forum Build Thread update we cover many subjects – the installation of a rolled radiator, Accusump unit, remote oil filter, tow hooks, 4 port steam vent kit, the intake manifold, discuss ignition coils, install a PP1 undertray, build brackets to hold an aux fuse panel and Holley Dominator ECU, sensors, brake lines, driveshaft, and more!
There is a lot of ground to cover on this update – hopefully you will dig further into the Forum post and see the many build pictures, read the what / why / how behind each task, and maybe it motivates you to work on your race car this weekend. Thanks for reading!