Wheres the difference?
Thread Starter
Racer
Joined: May 2004
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From: NORFOLK VA.
Wheres the difference?
Ok what is the difference that makes the 85-87 not be able to use the newer wheels like 88s and up can use, is the rearend longer and the wheelwells larger what would it take to make the 85 accept the newer wheels (WITHOUT)adapters? 
Race Director
Joined: Sep 2000
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From: The Top of Utah
Originally Posted by MR.KIDD
Ok what is the difference that makes the 85-87 not be able to use the newer wheels like 88s and up can use, is the rearend longer and the wheelwells larger what would it take to make the 85 accept the newer wheels (WITHOUT)adapters?
RACE ON!!!
Team Owner
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
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Swapping all the knuckles and spindles will not fix it provided you could even do it, its the entire suspension geometry that was changed. You may be able to do it for the rear, but I dont see how with the front.
Last edited by vader86; Apr 20, 2005 at 01:39 PM.
Race Director
Joined: Sep 2000
Posts: 17,298
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From: The Top of Utah
Originally Posted by MR.KIDD
Ok what is the difference that makes the 85-87 not be able to use the newer wheels like 88s and up can use, is the rearend longer and the wheelwells larger what would it take to make the 85 accept the newer wheels (WITHOUT)adapters?
Originally Posted by vader86
Swapping all the knuckles and spindles will not fix it provided you could even do it, its the entire suspension geometry that was changed. You may be able to do it for the rear, but I dont see how with the front.
The only difference in the rear IS the knuckles and spindles. The tie rods, strut rods and half shafts, are all interchangeable in ALL C4s. Only the ZR1 has wider wheel wells. Check it out.
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Team Owner
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
He's not only asking about the rear, hes talking about the entire car. I'm aware that most parts are interchangable for the rears.
Team Owner
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From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
He's talking about replacing wheels with different offsets.
It's much easier and cheaper to use adapters than replacing suspension parts.
There are also more wheels than you think that bolt right up to the 84-87. What kind of wheels do you want to put on?
Spacers are dangerous in my opinion, but I have no issues with using adapters.
It's much easier and cheaper to use adapters than replacing suspension parts.
There are also more wheels than you think that bolt right up to the 84-87. What kind of wheels do you want to put on?
Spacers are dangerous in my opinion, but I have no issues with using adapters.
Thread Starter
Racer
Joined: May 2004
Posts: 270
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From: NORFOLK VA.
Originally Posted by CentralCoaster
He's talking about replacing wheels with different offsets.
It's much easier and cheaper to use adapters than replacing suspension parts.
There are also more wheels than you think that bolt right up to the 84-87. What kind of wheels do you want to put on?
Spacers are dangerous in my opinion, but I have no issues with using adapters.
It's much easier and cheaper to use adapters than replacing suspension parts.
There are also more wheels than you think that bolt right up to the 84-87. What kind of wheels do you want to put on?
Spacers are dangerous in my opinion, but I have no issues with using adapters.
Thanks for all replys
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Team Owner
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From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Ideally, you want 1.25" adapters up front on the 17x8.5 wheels, and 1" adapters in back on the 18x9.5" wheels.
If these wheels are replicas, then you need a 1.25" adapter on all fours. Thinner adapters will cause the replica wheel to interfere with the stock studs. OEM wheels have clearance in the mounting surface, so its not an issue.
As for racing, I don't know.
If these wheels are replicas, then you need a 1.25" adapter on all fours. Thinner adapters will cause the replica wheel to interfere with the stock studs. OEM wheels have clearance in the mounting surface, so its not an issue.
As for racing, I don't know.
Drifting
Joined: Feb 2005
Posts: 1,592
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From: St Louis MO
[QUOTE=CentralCoaster]He's talking about replacing wheels with different offsets.
There are also more wheels than you think that bolt right up to the 84-87. What kind of wheels do you want to put on?
Where are they? I've checked numerous places on the net and in person and can't find any, other than stock, that will fit an '87 16x9.5 with a 38mm offset without an adapter, spacer or whatever. I just purchased new tires about 4 months ago and didn't want to neccessarily do it again, for 17".
Thanks
There are also more wheels than you think that bolt right up to the 84-87. What kind of wheels do you want to put on?
Where are they? I've checked numerous places on the net and in person and can't find any, other than stock, that will fit an '87 16x9.5 with a 38mm offset without an adapter, spacer or whatever. I just purchased new tires about 4 months ago and didn't want to neccessarily do it again, for 17".
Thanks
Last edited by PierEagle; Apr 21, 2005 at 01:03 AM.
Thread Starter
Racer
Joined: May 2004
Posts: 270
Likes: 0
From: NORFOLK VA.
Originally Posted by CentralCoaster
Ideally, you want 1.25" adapters up front on the 17x8.5 wheels, and 1" adapters in back on the 18x9.5" wheels.
If these wheels are replicas, then you need a 1.25" adapter on all fours. Thinner adapters will cause the replica wheel to interfere with the stock studs. OEM wheels have clearance in the mounting surface, so its not an issue.
As for racing, I don't know.
If these wheels are replicas, then you need a 1.25" adapter on all fours. Thinner adapters will cause the replica wheel to interfere with the stock studs. OEM wheels have clearance in the mounting surface, so its not an issue.
As for racing, I don't know.
Team Owner
Joined: May 2002
Posts: 24,337
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From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Z51 stock wheels stick out 1/4" more than the base model. (The wheels are different, the car itself is the same.)
1.25" spacers up front, 1" in rear will match the stock z51 specs. But plus or minus a quarter inch won't hurt anything.
1.25 (or 1.2") and 1" adapters are standard sizes. Be sure to specify the 5x4.75 bolt pattern and 12mmx1.5 studs.
1.25" spacers up front, 1" in rear will match the stock z51 specs. But plus or minus a quarter inch won't hurt anything.
1.25 (or 1.2") and 1" adapters are standard sizes. Be sure to specify the 5x4.75 bolt pattern and 12mmx1.5 studs.
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From: SCMR Rat Pack'r Charter Member..Great Bend KS
Originally Posted by CentralCoaster
Spacers are dangerous in my opinion, but I have no issues with using adapters.
Interesting.
I have no issues with spacers, but would be leery of adapters....
Larry
code5coupe
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From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Originally Posted by rocco16
Interesting.
I have no issues with spacers, but would be leery of adapters....
I have no issues with spacers, but would be leery of adapters....
With spacers, you've now about doubled the stressed area of the stud. That's twice as many thread roots to break, twice as much stretch, twice as much chance of the mounting surface slipping, which would put shear forces on them, or twice the bending force.