Register or Log In To remove these advertisements. |
|
|
|
Thread Tools | Display Modes |
|
11-29-2022, 10:04 PM | #1 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,657
|
Re: Unexpected disk brake - wheel problem
Use your spacers, grind a tiny bit more clearance on the calliper and install some longer wheel studs.
For those who think the spacers are the weak point, I’ve used them for years on trucks/cars with way more power and torque than your set up produces. JMHO |
11-29-2022, 10:09 PM | #2 | |
Senior Member
Join Date: Mar 2022
Location: Lucas, TX
Posts: 527
|
Re: Unexpected disk brake - wheel problem
Quote:
As for the trick with the washers, I stacked three 1/2 washers on each stud after measuring their thickness with my caliper. They were 9/32 of an inch or about 7 mm. Which is darn close to measurement of the other 15 inch wheel that I mentioned. While it fit and the wheel turned, the caliper was only clear by the finest measurement known to man (as my Dad used to say).
__________________
1953 Chevy 3100 - 5 window 1/2 ton pickup My 1953 Chevy Work-In-Process Photo Gallery "I don't have a carbon footprint, I drive everywhere." |
|
11-29-2022, 10:06 PM | #3 |
Registered User
Join Date: Jul 2007
Location: Toppenish, WA
Posts: 15,555
|
Re: Unexpected disk brake - wheel problem
When I took that photo in 1982 At the Chevy-GMC Truckin Nationals in Ogden I had a 68 Camaro Subframe with 72 Monte Carlo disk brakes on the front and a 66 Impala 12 bolt posi under the rear. That is after I did have to use spacers and had to grind on one corner of the caliper for clearance.
Still I have to believe that you can get by with just a bit of a spacer. get a hand full of flat washers and go one layer at a time until you have clearance and the measure the stack. Don't forget that it isn't very hard or expensive to swap out the lug bolts for longer lug bolts. That is under 20 bucks a side if you do it yourself. I'd add that I think your choice of simple chrome wheels and those tires do give it that all business push truck look. I might go as far as actually build a push bar for it. If you drove it to Bonneville for speed week that sure would one up those posers who paint drag car classes on their rust buckets and pretend that they are old land speed cars hoping someone will take a photo of it.
__________________
Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around. |
11-29-2022, 11:57 PM | #4 |
Senior Member
Join Date: Mar 2022
Location: Lucas, TX
Posts: 527
|
Re: Unexpected disk brake - wheel problem
Two question.
1) Does anyone know the backspace/offset dimensions of the stock factory 15 inch rims? 2) For those of you without power steering, what is the size of the tires you are running up front?
__________________
1953 Chevy 3100 - 5 window 1/2 ton pickup My 1953 Chevy Work-In-Process Photo Gallery "I don't have a carbon footprint, I drive everywhere." |
11-30-2022, 02:33 AM | #5 |
Registered User
Join Date: Mar 2022
Location: Surrey BC
Posts: 825
|
Re: Unexpected disk brake - wheel problem
I could measure a factory 16 in a day or so if that helps.
I seen online sources saying the base tire for 1/2 tons was 15 and 16. At least around here all the trucks I found back in the day were 16s.....I wanted 15s with the factory shape to the centre and cap clips and never found any. I have 15x8 aluminum slots, 235/70 on rear and 215/60 front, I like that look. I've driven other trucks with 235/75/ front and no power steering and it was not a problem. |
11-30-2022, 11:35 AM | #6 | |
Senior Member
Join Date: Mar 2022
Location: Lucas, TX
Posts: 527
|
Re: Unexpected disk brake - wheel problem
Quote:
__________________
1953 Chevy 3100 - 5 window 1/2 ton pickup My 1953 Chevy Work-In-Process Photo Gallery "I don't have a carbon footprint, I drive everywhere." |
|
11-30-2022, 01:40 PM | #7 | |
Senior Member
Join Date: May 2007
Location: Doodah Kansas
Posts: 7,774
|
Re: Unexpected disk brake - wheel problem
Quote:
no, thats only going to be an additional 6mm. thats why i tried to explain the difference in offset and backspacing but i guess I did it poorly. when you make the wheel wider, the extra width is spread equally over the front and back halves of the wheel. so a 7" vs a 6" will have an extra 1/2 inch on the front half of the wheel (wheel mounting surface to the front lip) and 1/2" on the back half of the wheel (wheel mounting surface to the rear). so going from a +6 to -6 will be a 12mm (1/2") difference in the mounting surface to the center of the wheel, but the actual gain in backspace is only going to be: 8/2 -1/4 (-6mm) = 3.75 backspace and 7/2 + 1/4 (+6mm) = 3.75 backspace zero. there will be no difference in the backspace, all the extra inch of the wheel width change will be on the front side of the rim, 1/2 inch that was already on the front side + 1/2 inch in offset change. also, and this is kind of important to put all the way down here at the bottom but cest la vie, if the caliper right now is hitting the CENTER of the wheel, a different offset will not fix it, only a spacer will. if the caliper is hitting the rim portion of the wheel, a different offset may fix it. a different style wheel with a different center shape may fix it too. and finally its worth mentioning, if you have the room for the extra 1" wider wheel to have the extra width all the way on the front side.... just get some 1.25" spacers and dont worry about new studs, it will move the wheel center out away from the caliper for about $50.
__________________
the mass of men live lives of quiet desperation if there is a problem, I can have it. new project WAYNE http://67-72chevytrucks.com/vboard/s...d.php?t=844393 |
|
11-30-2022, 03:07 AM | #8 |
Registered User
Join Date: Jul 2007
Location: Toppenish, WA
Posts: 15,555
|
Re: Unexpected disk brake - wheel problem
Stock 16 inch 4-1/2 inch wide wheels on a 53 had/have 0 offset. 15- 5.5 have 0 offset. That should give about a 2-1/4 inch backspace.
I've got what I think is a 15 inch AD wheel out here and if I can find it in the snow tomorrow I'll measure the backspacing. This from page 155 of the GM Heritage 53 truck pfd https://www.gm.com/content/dam/compa...olet-Truck.pdf
__________________
Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around. Last edited by mr48chev; 11-30-2022 at 03:12 AM. |
11-30-2022, 05:20 PM | #9 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,657
|
Re: Unexpected disk brake - wheel problem
Do you have the box and fenders on the truck?
I’d hate to see you finally figure out a rim/tire that fits your discs only to have the tire contact the fender. |
11-30-2022, 08:47 PM | #10 |
Senior Member
Join Date: Mar 2022
Location: Lucas, TX
Posts: 527
|
Re: Unexpected disk brake - wheel problem
That is a really good question. The bed was on but not the fenders. To ensure that the spacer I purchased was going to work, I remounted one side and took measurements. There is another 2 inches from the current wheel/tire to the outside edge of the wheel well. The 1 1/4" spacer should work out fine. Also, the bottom edge of the wheel well is about an inch above the top of the tire, so I should be fine. Thanks for the heads up!
__________________
1953 Chevy 3100 - 5 window 1/2 ton pickup My 1953 Chevy Work-In-Process Photo Gallery "I don't have a carbon footprint, I drive everywhere." |
12-02-2022, 12:47 PM | #11 | |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,657
|
Re: Unexpected disk brake - wheel problem
Quote:
They certainly ain’t cheap. A 16x7 would be the way to go but still not a gaurentee they’d fit either. Sometimes the wheel is designed different when you swap to larger sizes. And if you changed to a different rim style like the cragars, still no gaurentee they’d fit. |
|
12-02-2022, 12:52 AM | #12 | |
Registered User
Join Date: Jul 2007
Location: Toppenish, WA
Posts: 15,555
|
Re: Unexpected disk brake - wheel problem
Quote:
He could have popped a lug stud out, run to the parts house and found some matching lug studs that were 1/4 or more longer and put the spacers on and done but he has to do everything the hard way and make old man Davison cringe. fiy Mr 48 = old man Davison or Rob Davison in some groups.
__________________
Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around. |
|
12-02-2022, 01:11 PM | #13 | |
Senior Member
Join Date: Mar 2022
Location: Lucas, TX
Posts: 527
|
Re: Unexpected disk brake - wheel problem
Quote:
Instead, I chose to purchase a wheel adapter to see if that remedies the problem. If it does, then I can continue with my build and decide at a later date if I change my wheels and tires. By the way, I did try washers and the 1/4" spacer with the existing lugs and it just barely worked, which is why I purchased the 1 1/4" spacer/adapter that Lee suggested, which seemed like a more constructive suggestion than critical.
__________________
1953 Chevy 3100 - 5 window 1/2 ton pickup My 1953 Chevy Work-In-Process Photo Gallery "I don't have a carbon footprint, I drive everywhere." |
|
12-01-2022, 12:50 PM | #14 |
Registered User
Join Date: Jan 2012
Location: Motown
Posts: 7,680
|
Re: Unexpected disk brake - wheel problem
why haven't you ground the interference off yet???
yeah a 1/4" less back space would have done it and why did you mount tires on bare steel rims? you need to dismount the tires to powder coat or paint rims you can't tape it to keep the rust out of the crack fyi i powder coated my steelies with an eastwood pc setup in an old oven to avoid handling the powder, i dusted them right on the oven rack and carefully slid the rack in i made a rotisserie out of wood and a bearing to rotate the rim yeah it smoked a bit but never affected the pc
__________________
cool, an ogre smiley Ogre's 58 Truk build how to put your truck year and build thread into your signature shop air compressor timer |
12-01-2022, 02:41 PM | #15 | |
Senior Member
Join Date: Mar 2022
Location: Lucas, TX
Posts: 527
|
Re: Unexpected disk brake - wheel problem
Quote:
__________________
1953 Chevy 3100 - 5 window 1/2 ton pickup My 1953 Chevy Work-In-Process Photo Gallery "I don't have a carbon footprint, I drive everywhere." |
|
12-03-2022, 09:04 PM | #16 |
Registered User
Join Date: Jan 2012
Location: Motown
Posts: 7,680
|
Re: Unexpected disk brake - wheel problem
My bad! The back of a chrome wheel sometimes doesn't look smooth
__________________
cool, an ogre smiley Ogre's 58 Truk build how to put your truck year and build thread into your signature shop air compressor timer |
12-03-2022, 10:37 PM | #17 |
Senior Member
Join Date: Mar 2022
Location: Lucas, TX
Posts: 527
|
Re: Unexpected disk brake - wheel problem
No worries, I love your idea on powder coating. Now if I could just convince my wife to let me powder coat in the kitchen......LOL
__________________
1953 Chevy 3100 - 5 window 1/2 ton pickup My 1953 Chevy Work-In-Process Photo Gallery "I don't have a carbon footprint, I drive everywhere." |
12-04-2022, 02:53 PM | #18 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,657
|
Re: Unexpected disk brake - wheel problem
|
12-02-2022, 01:16 PM | #19 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,657
|
Re: Unexpected disk brake - wheel problem
Now you got it figured!
Do you have a link to the 1 1/4 spacers you bought? |
12-02-2022, 01:28 PM | #20 | ||
Senior Member
Join Date: Mar 2022
Location: Lucas, TX
Posts: 527
|
Re: Unexpected disk brake - wheel problem
Quote:
Here is a link to what I bought - https://www.ebay.com/itm/262252146185 Quote:
Thanks!
__________________
1953 Chevy 3100 - 5 window 1/2 ton pickup My 1953 Chevy Work-In-Process Photo Gallery "I don't have a carbon footprint, I drive everywhere." |
||
12-02-2022, 03:30 PM | #21 | |
Registered User
Join Date: Jul 2007
Location: Toppenish, WA
Posts: 15,555
|
Re: Unexpected disk brake - wheel problem
Quote:
They have 16 pages of 7/16 lug studs listed. https://www.napaonline.com/en/search...%20&referer=v2
__________________
Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around. |
|
12-02-2022, 03:43 PM | #22 |
Registered User
Join Date: Mar 2022
Location: Surrey BC
Posts: 825
|
Re: Unexpected disk brake - wheel problem
geezer#99, How can you tell the spacers are hub centric? They look like they have tapered seats. The link does not appear to say specifically. Maybe there is a visual clue I am missing, but I have not had much to do with spacers.
I think I need hub rings for my wheels before I drive it so I want to learn more. the wheels are not hub centric? - if this is the wheel in question https://www.summitracing.com/parts/usw-52-5660n Mr48: he said he had trouble finding spacers with the right thread, not longer lugs |
12-02-2022, 07:24 PM | #23 | |
Senior Member
Join Date: Mar 2022
Location: Lucas, TX
Posts: 527
|
Re: Unexpected disk brake - wheel problem
Quote:
__________________
1953 Chevy 3100 - 5 window 1/2 ton pickup My 1953 Chevy Work-In-Process Photo Gallery "I don't have a carbon footprint, I drive everywhere." |
|
12-02-2022, 05:34 PM | #24 | |
Senior Member
Join Date: Mar 2022
Location: Lucas, TX
Posts: 527
|
Re: Unexpected disk brake - wheel problem
Quote:
__________________
1953 Chevy 3100 - 5 window 1/2 ton pickup My 1953 Chevy Work-In-Process Photo Gallery "I don't have a carbon footprint, I drive everywhere." |
|
12-02-2022, 01:53 PM | #25 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,657
|
Re: Unexpected disk brake - wheel problem
Maybe!
Sorry to complicate things but best to be safe. They’ll work to get you a roller for around the shop but possibly not safe to be driven on the road. From your pic, your axles are lug centric. Your wheels are hub centric. Your wheel adaptors are hub centric. The wheel design is different for a lug versus hub centric rim. Here’s a link to help with that. https://lmr.com/products/hub-centric-vs-lug-centric |
Bookmarks |
|
|