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I'm seeing TTO's on many C3 Race cars, both flared and not, and I love the look. I'm building a non flared '76. I cannot figure out how people are getting 15x8 and 15x7 TT0's to clear GM's factory calipers without using spacers. With the backspacing and offset available today, a 15x8 with 1" spacers would stick way out of the fender. Not a look I care for. Was there a historical run of wheels that would clear our calipers? Are people using different braking systems that allow the use of flush mount TT0's? Think the James Garner AIR cars for a reference. Thanks for any info.
Yes, VN309. I just sent a set back that won't clear the brakes. You'd have to do some serious machining on the back of the spokes + run some spacers. Not optimal in my mind.
Yes, VN309. I just sent a set back that won't clear the brakes. You'd have to do some serious machining on the back of the spokes + run some spacers. Not optimal in my mind.
That is strange. The VN309 series states it has a 3.81 back spacing. That should be fine. I have never tried fitting them myself so I can not speak from personal experience but from what I remember, people were using as much as a 4.5 inch back spacing and getting them to fit without sticking out and wothout caliper issues. I here there is always some issue with the emergency brake connection but it seems it can be bent a little to clear it.
I want to get a set of these but just haven't looked into it enough.
I know there are other threads related to this very issue. Try and do a search.
ed427vette - backspace has nothing to do with disc caliper clearance. Backspace determines center line of mounting flange - where is the flange in regards to inside/outside of wheel. It's the mounting flange versus back side of spokes that create the real issue. I'll attach a few pics. A stock spare wheel, and a few versions of TTO Torq Thrust's that may or may not work depending on your car. See the extreme cutout on the back side of some of the spokes? That is what is required to clear OEM calipers. The new TTO's have zero cutout on the backside of the spokes.
Yes, VN309. I just sent a set back that won't clear the brakes. You'd have to do some serious machining on the back of the spokes + run some spacers. Not optimal in my mind.
So many of the other Torq Thrusts fit without spacers, none of them interest you? How about VN105D either the VN10555861 or VN1055861B?
Well, that depends on who you talk to. The VN105D's, and TTII's are questionable. Some say they fit fine, some not. American Racing says - "Order one and test it". Seems ridiculous for a car that had a lifespan of 14 years and should be well documented. I'm going for the old school L-88 look, and I don't care for the D, and TTII models where the spokes bow out. So I'd make the sacrifice to change calipers if someone showed me something that would allow a flush mounting surface wheel. I mean, what did Garner and every other early L-88 run? Magnesium wheels, and what did the backside look like? I've never seen a photo.
TT2, no spacers, rims rubbed the paint off 1 caliper, i slightly massaged that caliper.
no more rubbing but close to calipers. I will see if I can identify exact wheel these are 16".
I'm going out on a limb here but I recall reading that the Torque Thrust "D" was designed to clear disk brakes. I have TT's on my '69, they are 15 inch; 3 something backspace and fit fine. Brakes are stock, disk and calipers.
Also those AIR cars are running manesium TTD's. Look at the edge of the spoke in the photos, Even the color post restoration photo is a TTD with the lip painted black masking the dog leg cast into the spoke. I haven't seen anyone cast a modern TTD with a dog leg spoke and the pointed as opposed to rounded spoke face outside of Vintage wheel works and Vintage engineering who casts a expensive yet well done magnesium replica.
The wheels on the red 65 below are American Racing Custom VNT70R. These wheels come in 15x8 with 4" backspacing, and will clear the stock Corvette brake calipers. The owner of the 65, Jim Glass, worked with American Racing to develop this wheel to work on Corvettes, without using spacers.
Jim recently acquired the yellow 69 below. It came with 8 American Racing wheels, which appear to be the Torque Thrust Originals. This car has 1/2" spacers on it, so that the wheels will clear the calipers. One of Jim's customers has a 66 vintage racer that we maintain, and it too has Torque Thrust Originals and spacers.
Awesome! Thank you! What we really need is for American to provide this nifty 360 spins feature for the Torq Thrusts that they have on some of their other wheels. Check it out at the bottom of the 504 page http://www.americanracing.com/wheel/35996/vn504
I think all the old racers used Torq Thrust Ds. All the pics I've seen show them with the original magnesium Ds. Here's a couple threads you should read.
No doubt a super populat wheel, likely the most seen aftermarket style wheel on c3s,
I askrd a firend of mine a racer of vettes what they used in the day, money was a factor, mini lites, real magnesium 5 spokes and then vectors and even aluminum slots like ansen,
02-13-2017, 02:50 PM
Torq Thrust TT0's on C3 Race Cars
