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#1 |
Registered User
Join Date: Oct 2014
Location: panama city, fl
Posts: 204
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DJM, or any 3" spindles questions
Do anybody have 3" drop spindles on their truck, even 2 inch, DJM specifically. If so could you post some pics of them on with your wheel off. I have 1.25 rotors, so the heavy duty brakes. I can't get the caliper to go on correctly. I took the first set back because I thought they had been boxed wrong but they look the same as the new set. I'm stumped. Everything else lined up perfect and bolted in correctly.
![]() This is the only difference I can see in the stock vs. drop spindles. Everything else measures out the same. |
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#2 |
Senior Member
![]() Join Date: Jul 2000
Location: North Texas
Posts: 3,484
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Re: DJM, or any 3" spindles questions
Got this from the DJM website:
You will have either a 1″ or 1.25″ rotor. If you have a 1″ use the kit with the L in the part number (above) or if you have a 1.25″ rotor use the kit with the H in the part number. Your have the "H" kit right?
__________________
Mike 1969 C10 LWB -- owned for 35 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then! Last edited by MikeB; 01-30-2015 at 04:28 PM. |
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#3 |
Registered User
Join Date: Oct 2014
Location: Spearfish South Dakota
Posts: 407
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Re: DJM, or any 3" spindles questions
The brake lines have to be bent down to get calipers on. mine were cheap cts had to giind tab off caliper to get them on. have yo tryed them up on bench wouldnt be brake lines
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#4 |
Registered User
Join Date: Oct 2014
Location: panama city, fl
Posts: 204
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Re: DJM, or any 3" spindles questions
Yes. I have the h kit and the 1.25 brakes, thought I made that clear. Brake lines don't matter. When I tried to bolt the caliper up it wouldn't bolt up and go over the rotor. I'll get some more pics tomorrow.
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#5 |
Senior Member
Join Date: Aug 2004
Location: Everett, WA
Posts: 2,316
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Re: DJM, or any 3" spindles questions
Have you tried DJM; send them the picture you posted.
My first inclination is to say they are mis-packaged spindles for 1" brakes, but if this is your second set, that seems unlikely, but maybe they mis-packaged a lot of them? Is the part # cast into the spindle with the L or H?
__________________
2009 Honda Fit CfC (bsf 44.9 mpg) 2000 Tahoe Limited 1991 GMC CrewCab Dually 2wd, will end up swb, not dually and replace CCswb below 1991 GMC CrewCab Dually 4x4, just going to fix things up for now 1982/1989 K5/GMC Jimmy 2wd 1987 GMC 1/2 ton swb 2wd Crew (sold) |
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#6 |
Registered User
Join Date: Oct 2014
Location: panama city, fl
Posts: 204
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Re: DJM, or any 3" spindles questions
Just got off the phone with them. They told me the casting number in the spindle means nothing and that the only difference is the size of the axle shaft.
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#7 |
Registered User
Join Date: Oct 2014
Location: panama city, fl
Posts: 204
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Re: DJM, or any 3" spindles questions
Anybody with any pics?
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#8 |
Registered User
Join Date: Oct 2014
Location: Spearfish South Dakota
Posts: 407
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Re: DJM, or any 3" spindles questions
with new disc new pads even with pistons pushed all the way in it can still be close. Or a little snug.
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#9 |
Registered User
Join Date: Oct 2014
Location: panama city, fl
Posts: 204
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Re: DJM, or any 3" spindles questions
Wasn't just close or a little snug... we're talking an inch or more off.
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#10 |
Registered User
Join Date: Oct 2014
Location: Spearfish South Dakota
Posts: 407
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Re: DJM, or any 3" spindles questions
Wow!
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#11 | |
Senior Member
![]() Join Date: Jul 2000
Location: North Texas
Posts: 3,484
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Re: DJM, or any 3" spindles questions
Quote:
Found this from my notes back then: Standard duty brakes were called JB1 or JB3 and had 1.04" thick rotors Trucks with these brakes also had 2" wide rear brake shoes, and that will sometimes be a part of the disc brake parts description. HD brakes were called JB5, JD3, or JD5 and had 1.23" thick rotors These were used with 2-3/4" wide rear brake shoes. Spindles, calipers and rotors for the two types of brake systems are different! Pads are the same Hope this helps.
__________________
Mike 1969 C10 LWB -- owned for 35 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then! Last edited by MikeB; 01-31-2015 at 08:48 PM. |
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#12 |
Registered User
Join Date: Apr 2013
Location: Pasadena, Maryland
Posts: 160
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Re: DJM, or any 3" spindles questions
Looks to me the rotor is not on the spindle all the way. Is the bearing going all the way down? Is the seal too small and not allowing the rotor on?
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#13 |
Registered User
Join Date: Oct 2014
Location: panama city, fl
Posts: 204
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Re: DJM, or any 3" spindles questions
It's on all the way..... and no.
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#14 |
Registered User
Join Date: Dec 2007
Location: Kimberley, BC, Canada
Posts: 799
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Re: DJM, or any 3" spindles questions
I'll concede that I don't know anything about these particular spindles. But I think your picture shows it all; the casting is wrong. It's clear that the wider caliper used by the 1-1/4 rotors is not going to fit properly.
__________________
Greg 64 GMC Suburban - 283, NV3500, 14 bolt 77 C10 swb - 292, SM465, 12 bolt |
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#15 |
Senior Member
![]() Join Date: Jul 2000
Location: North Texas
Posts: 3,484
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Re: DJM, or any 3" spindles questions
I'm new to square bodies, but the more I look, the more I think something is wrong with the new spindles. If the new rotor is 1.25" thick, that tells me the actual machined steel "spindle" itself is designed for the 1.25" rotor and its bearings. However, I'd almost bet the cast iron part of the spindle (steering knuckle) is made to fit the std duty calipers, which won't fit on the 1.25" rotors.
I suggest taking the DJM spindle to the parts store to see if a std duty caliper will fit. If it does, that would mean DJM accidentally built you a hyrbid spindle. Of course, I could be way out in left field here!
__________________
Mike 1969 C10 LWB -- owned for 35 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then! |
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#16 |
Registered User
Join Date: Oct 2014
Location: panama city, fl
Posts: 204
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Re: DJM, or any 3" spindles questions
again.... does anybody have a picture of there drop spindles installed with 1.25 rotors? That would sure answer a lot of questions for me
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#17 |
Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
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Re: DJM, or any 3" spindles questions
My trucks all have Bell Tech lowered spindles on them and I did not have any issues with the fitment that you have pictured on yours. I have the 1.25 rotors on my trucks, also.
__________________
Frank |
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#18 |
Registered User
Join Date: Oct 2014
Location: panama city, fl
Posts: 204
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Re: DJM, or any 3" spindles questions
I compared the belltechs right beside the DJMs on the counter at Summit and they were identical. Can you post some pics of your belltech spindles. How the calipers are bolted on... etc. Any help would be appreciated. Can you take a pic of how the rotor sits against the tab that I pictured above?
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#19 |
Registered User
Join Date: Feb 2014
Location: Greenville, SC
Posts: 63
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Re: DJM, or any 3" spindles questions
I will probably have mine apart this weekend if noone else comes through with a pic by then. Have you tried taking the assembly to the auto parts store and seeing if a new caliper bolts up - just thinking that maybe someone changed your caliper or spindle down the line somewhere.
__________________
LifeTime GM guy. Current collection...
2006 Z-71 Suburban 1985 C-10 1990 Suburban 1966 C-10 (me & dad's project) |
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#20 |
Registered User
Join Date: Feb 2014
Location: Greenville, SC
Posts: 63
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Re: DJM, or any 3" spindles questions
I found this picture from when I painted my spindles and they definitely look like the lowering spindles you have. Mine are the 1.25" rotors as well. I think someone swapped out your spindles/calipers at some time.
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__________________
LifeTime GM guy. Current collection...
2006 Z-71 Suburban 1985 C-10 1990 Suburban 1966 C-10 (me & dad's project) |
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#21 |
Registered User
Join Date: Oct 2014
Location: panama city, fl
Posts: 204
|
Re: DJM, or any 3" spindles questions
My truck is a silverado, came with 1.25 brakes ( HD brakes). All my stock stuff measures out as it should. What model are your spindles?
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#22 |
Registered User
Join Date: Oct 2014
Location: panama city, fl
Posts: 204
|
Re: DJM, or any 3" spindles questions
Do you remember what size your inner bearings are?
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#23 |
Senior Member
![]() Join Date: Jul 2000
Location: North Texas
Posts: 3,484
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Re: DJM, or any 3" spindles questions
What number are your new inner bearings? Are they the same as the old ones? Looks like it should be A5 or BR5 (1.375" ID) for HD brakes, and A6 or BR6 (1.250" ID) for std duty. However, I don't know if the smaller bearing will even start to go on the larger spindle.
I may have missed this, but are you able to bolt the HD calipers on the drop spindle with the rotor removed?
__________________
Mike 1969 C10 LWB -- owned for 35 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then! |
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#24 |
Registered User
Join Date: Feb 2014
Location: Greenville, SC
Posts: 63
|
Re: DJM, or any 3" spindles questions
The spindles in the picture are from Spindle Source, but I have used Belltech and DJM in the past (haven't noticed a difference on the square body trucks except for price). The Suburban uses the same spindles as the C-10's. I don't remember the part number on the bearings, but they were Timken from Oreilly's and went right on. I know this has already been mentioned but the brake line will keep the caliper from slipping over if they aren't bent away first. I'll dig my stock spindles out and see how they compare to your measurements.
__________________
LifeTime GM guy. Current collection...
2006 Z-71 Suburban 1985 C-10 1990 Suburban 1966 C-10 (me & dad's project) |
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#25 |
Registered User
Join Date: Feb 2014
Location: Greenville, SC
Posts: 63
|
Re: DJM, or any 3" spindles questions
I just measured my stock spindles and they are like yours - 2 1/4".
__________________
LifeTime GM guy. Current collection...
2006 Z-71 Suburban 1985 C-10 1990 Suburban 1966 C-10 (me & dad's project) |
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