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#1 |
Registered User
Join Date: Jul 2016
Location: Arkansas
Posts: 147
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coil spring clock position
I have fought with these coil springs and they keep slipping off the upper. Where exactly should the spring start/stop? Maybe the spring is wrong? 1970 c10 2wd . Thanks for any help in advance.
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#2 |
Senior Member
![]() Join Date: Mar 2003
Location: Colfax-California
Posts: 8,526
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Re: coil spring clock position
I set the spring in relation to the lower arm. make sure that the upper is on the outside of the lip, then jack up the floor jack until I can get the ball joint nut started
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#3 |
Senior Member
![]() Join Date: Jun 2009
Location: Belews Creek , NC
Posts: 4,220
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Re: coil spring clock position
Also make sure your not trying to install it upside down
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__________________
Larry It is easily overlooked that what is now called vintage was once brand new. "Project 68" paypal.me/ldgrant |
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#4 |
Registered User
Join Date: Jul 2016
Location: Arkansas
Posts: 147
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Re: coil spring clock position
The part that is scraped off, is that where the end of the coil spring should rest. When its in the lower cup position, it sits about half way on that raised ridge .
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#5 |
Junior Member
![]() Join Date: Jul 2014
Location: Huntsville, AL
Posts: 75
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Re: coil spring clock position
I'm going through this now as well. I bought the Moog HD springs for my C10 because that's what the glove box sticker says it had originally. Bought them from Summit Racing. They will not clock correctly in the frame and lower control arm. It's either/or. Summit tech line says they are correct for the year and model. They gave me the tech line number for Moog. When I talked to them they said they've been selling that spring for these trucks for decades. When I told them the problem, they said to seat the spring correctly in the upper perch and not worry about perfect seating in the control arm, in order to allow the spring to twist. I think that sounds goofy, but that's their story. Regardless, the spring is in and can't get out of the control arm so I'm going with it.
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#6 | |
Registered User
Join Date: Jul 2016
Location: Arkansas
Posts: 147
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Re: coil spring clock position
Quote:
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#7 |
laying low
![]() Join Date: Mar 2001
Location: Searcy, Ark. USA
Posts: 13,232
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Re: coil spring clock position
Is that a 3" dropped spring? I've heard of them dropping out of place when jacked up. Not so with a 2" spring.
__________________
Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross |
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#8 |
Registered User
Join Date: Jul 2016
Location: Arkansas
Posts: 147
|
Re: coil spring clock position
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#9 |
laying low
![]() Join Date: Mar 2001
Location: Searcy, Ark. USA
Posts: 13,232
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Re: coil spring clock position
There is only one way for it to go. If it is clocked right in the lower control arm it is right at the upper end too.
I can't imagine how your spring could be moving off it's upper mount.
__________________
Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross |
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#10 |
Registered User
Join Date: Oct 2016
Location: Dallas Texas
Posts: 3,090
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Re: coil spring clock position
If it's the right spring, it should be slightly tapered at the "top" ( smaller circle thatn the "bottom".
The bottm of the spring is uneven, where the spring ends at the "bottom", that chunk of metal goes into the lowest portion of the cup in the lower control arm. That's where you "clock" it correctly and no, the spring doesn't turn at all once installed. -klb
__________________
67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi 07 335 sport turbo 6sp 94 Trans Am GT LT1 6sp posi -- sold after 22yrs 99 540 sport V8 6sp -- sold 73 240z L24 4sp -- given to friend 68 C10 step 350/350 3.73 open -- sold |
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#11 |
Junior Member
![]() Join Date: Jul 2014
Location: Huntsville, AL
Posts: 75
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Re: coil spring clock position
There should only be one way for it to go, but on the Moog springs, the top of the spring is straight for about the last two or three inches and should match up with the straight portion of the upper perch. (Think D-shaped.) The spring can't twist because of the two flats mated together. Problem is, if you get that part correct, the end of the spring at the bottom is about three inches shy of "mating" with the groove end on the lower control arm. Moog says it doesn't need to match up at the bottom end. I think it should, but then I'm just a customer.
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#12 | |
Registered User
Join Date: Oct 2016
Location: Dallas Texas
Posts: 3,090
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Re: coil spring clock position
Quote:
-klb
__________________
67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi 07 335 sport turbo 6sp 94 Trans Am GT LT1 6sp posi -- sold after 22yrs 99 540 sport V8 6sp -- sold 73 240z L24 4sp -- given to friend 68 C10 step 350/350 3.73 open -- sold |
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#13 |
Registered User
Join Date: Jul 2016
Location: Arkansas
Posts: 147
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Re: coil spring clock position
If I clock mine right in the lower control arm, then the upper is not wrapping around the D shape right. Eibach too claims only worry about the top. I don't see how because that pocket is what makes the spring sit flat in the lower control arm. Without it, the spring wants to push to one side or the other.
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#14 |
Registered User
Join Date: Oct 2016
Location: Dallas Texas
Posts: 3,090
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Re: coil spring clock position
Check your spring end point alignment with mine. This is likely your issue ( yours isn't aligned like the pic ):
__________________
67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi 07 335 sport turbo 6sp 94 Trans Am GT LT1 6sp posi -- sold after 22yrs 99 540 sport V8 6sp -- sold 73 240z L24 4sp -- given to friend 68 C10 step 350/350 3.73 open -- sold |
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#15 |
Registered User
Join Date: Jul 2016
Location: Arkansas
Posts: 147
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Re: coil spring clock position
I definitely think my clocking position of spring is off.
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#16 |
Registered User
Join Date: Jul 2016
Location: Arkansas
Posts: 147
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Re: coil spring clock position
Another angle
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#17 |
Registered User
Join Date: Oct 2016
Location: Dallas Texas
Posts: 3,090
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Re: coil spring clock position
That's a match the one I pictured.
Have a look at your lower A-arms and note which "way" the spring would be pointing if it were seated in the valley ( like where the cut of part of the bottom of the spring would be pointing ). Mine are: Driver pints toward the driver rear wheel Passenger points forward and slightly right. -klb
__________________
67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi 07 335 sport turbo 6sp 94 Trans Am GT LT1 6sp posi -- sold after 22yrs 99 540 sport V8 6sp -- sold 73 240z L24 4sp -- given to friend 68 C10 step 350/350 3.73 open -- sold |
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#18 |
Registered User
Join Date: Jul 2016
Location: Arkansas
Posts: 147
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Re: coil spring clock position
This is my passenger side when the spring is seared in the pocket
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#19 |
Registered User
Join Date: Jun 2014
Location: Mocksville, NC
Posts: 1,747
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Re: coil spring clock position
I think these last two photos you posted are the key to the answer. You can tell from that bottom up angle that the top D loop in your spring doesn't appear to be as complete and defined as the D in a stock spring. It does not appear that your spring would seat and stay put in any orientation. As in, there is a wide enough gap between the end of the spring and the next coil that it can slide off center from the D seat in the upper mount. The spring should extend with a flatter region as far as the paint scraped area you can see in that bottom up photo.
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Builds: Green Gus the 68 C10 ; Sullii the 72 1500 - Instagram: @dr.hewitt - C10 Concept/Development Photos: Master Thread |
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#20 | |
Registered User
Join Date: Jul 2016
Location: Arkansas
Posts: 147
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Re: coil spring clock position
Quote:
It definitely wants to slide off. I don't think the bend is precise at the top like it should be. I just have to find out who makes a good spring that fits. Mine is a 2 inch drop Eibach. |
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#21 |
Senior Member
![]() Join Date: Jun 2009
Location: Belews Creek , NC
Posts: 4,220
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Re: coil spring clock position
I bought mine through summit racing and they worked out very well, also being a 2" drop
![]() Summit drop spring
__________________
Larry It is easily overlooked that what is now called vintage was once brand new. "Project 68" paypal.me/ldgrant |
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#22 | |
Registered User
Join Date: Jul 2016
Location: Arkansas
Posts: 147
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Re: coil spring clock position
Quote:
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#23 | |
Senior Member
![]() Join Date: Jun 2009
Location: Belews Creek , NC
Posts: 4,220
|
Re: coil spring clock position
Quote:
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__________________
Larry It is easily overlooked that what is now called vintage was once brand new. "Project 68" paypal.me/ldgrant |
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