Half shaft spacers.
Hey guys i just thought i would add my 2 cents about this topic. i am fairly new to the s2000 (2 months) but i have been a tech since i could drive ( 7 years ).
Cv joints absolutely unique 2 to the car they were designed for, front, rear and all wheel drive cars all have different suspention travel specs. honda's are known for weak driveline parts (clutch,trans,halfshaft). The s2000 is an all new area honda has little of no experience in (front engine rear drive)< but from what i have seen with these cars and from experince they are well built. With any new design there can and will be flaws, THIS GOES FOR ALL MAKES AND MODELS.
The angle of the joint isnt so much the issue but the depth of the shaft bearings is critical. Like mx5 said lowering the car might not change the shaft depth at all but if the factory depth is insuficent premature wear can and will uccur.
About a week ago i aligned my buddys 02 s2k, this car is stupid low ( tien coilovers ) and it was almost impossible to get on the rack. while it was in the air he mentioned he had a noise coming from the rear when turning ( not tires rubbing lol) so i gave a tug on the shafts at the wheels and at the diff and found were the shaft is hooked into the diff (outputshaft sprocket whatever) there was alot of up and down movement. i have seen this amount of movement on high milage front drive cars but this car only has 45k on it.
something in the diff was loose, possibly a bearing on the output but i dont know anything about the internals of the diff.
he also told me that he had a vibration at about 70 mph. ( not the tires roadforce balanced by me
)
That seemed to me a bit abnomal for a diif bearing to have that much play at such a low milage. the car has only been lowered for about 2500miles and was purchased from a little old lady ((never abused) yes a little 60 year old lady
lol))
This leads me to belive the shaft is the cause of the problem ( Imbalance or distortion at speed)
Now in terms of axelshaft falure because you lowered your car i dont believe that is the case . And if these companys are using that as a selling point ( SAVE YOUR LOWERED CARS CV SHAFTS ) they should rethink .
But if there is a factory flaw with the depth a spacer would be a big help.
Hope this helps
John A.
Cv joints absolutely unique 2 to the car they were designed for, front, rear and all wheel drive cars all have different suspention travel specs. honda's are known for weak driveline parts (clutch,trans,halfshaft). The s2000 is an all new area honda has little of no experience in (front engine rear drive)< but from what i have seen with these cars and from experince they are well built. With any new design there can and will be flaws, THIS GOES FOR ALL MAKES AND MODELS.
The angle of the joint isnt so much the issue but the depth of the shaft bearings is critical. Like mx5 said lowering the car might not change the shaft depth at all but if the factory depth is insuficent premature wear can and will uccur.
About a week ago i aligned my buddys 02 s2k, this car is stupid low ( tien coilovers ) and it was almost impossible to get on the rack. while it was in the air he mentioned he had a noise coming from the rear when turning ( not tires rubbing lol) so i gave a tug on the shafts at the wheels and at the diff and found were the shaft is hooked into the diff (outputshaft sprocket whatever) there was alot of up and down movement. i have seen this amount of movement on high milage front drive cars but this car only has 45k on it.
something in the diff was loose, possibly a bearing on the output but i dont know anything about the internals of the diff.
he also told me that he had a vibration at about 70 mph. ( not the tires roadforce balanced by me
)That seemed to me a bit abnomal for a diif bearing to have that much play at such a low milage. the car has only been lowered for about 2500miles and was purchased from a little old lady ((never abused) yes a little 60 year old lady
lol))This leads me to belive the shaft is the cause of the problem ( Imbalance or distortion at speed)
Now in terms of axelshaft falure because you lowered your car i dont believe that is the case . And if these companys are using that as a selling point ( SAVE YOUR LOWERED CARS CV SHAFTS ) they should rethink .
But if there is a factory flaw with the depth a spacer would be a big help.
Hope this helps
John A.
Thanks for the contribution S-Turn. 
I have indeed been told that I need the spacers to save my CV joints after lowering my car, and I've been told that I need both 7mm and 10mm spacers, which seems to depend on who's trying to sell me a spacer than how much my car is lowered. Nobody has ever tried to sell me spacers with any other justification, so all the other "theories" here come from people who are trying to be charitable and find SOME real benefit from the things.
I'd just call BS on the whole idea, but I want to be absolutely sure I'm not missing something.
Thanks again for contributing.
I have indeed been told that I need the spacers to save my CV joints after lowering my car, and I've been told that I need both 7mm and 10mm spacers, which seems to depend on who's trying to sell me a spacer than how much my car is lowered. Nobody has ever tried to sell me spacers with any other justification, so all the other "theories" here come from people who are trying to be charitable and find SOME real benefit from the things.
I'd just call BS on the whole idea, but I want to be absolutely sure I'm not missing something.
Thanks again for contributing.
I have to ask.....If you have the J's 10mm spacers already installed, will it hurt anything....?????? I, for one, was talked into having these put on, prior to having my KW-3's put on, lowered, and realigned to UK specs.......
Originally Posted by Looter,May 23 2007, 05:14 AM
I have to ask.....If you have the J's 10mm spacers already installed, will it hurt anything....?????? I, for one, was talked into having these put on, prior to having my KW-3's put on, lowered, and realigned to UK specs.......Maybe Billman will respond. I'd take 'em off the car if Billman thought they might cause some kind of problem.
For now at least I don't see any reason to believe that you have anything to worry about.
Originally Posted by Billman250,May 23 2007, 07:37 PM
I'm going to give the Eibach's a try, likely tomorrow.
I'll get some before and after measurements on the axle.
I'll get some before and after measurements on the axle.

Thanks Bill. It'll be nice to put people's mind's to rest, one way or the other.











