I have not had any problems so far but wondering what the maximum allwoable drop would be without having to put these in?

 

good question...
i have seen these things but unsure when they start to come into play?

 

maybe you should ask the guywho sells them in them, jwkim

here is the broupbuy thread. https://www.s2ki.com/forums/index.php?showtopic=361479

 

i just read through the thread. any drop will cause stretching of the shaft in the AP1's. basically if you plan to have a lowered ap1 u need these, whether is be just lwoering springs or coilovers.

AP2's do not need them.

btw, search damnit

 

ARE THE AP2 SHAFTS LONGER OR IS IT THE DIFFERNTIAL JOINT?

THANKS FOR THE LINK, I FOUND THAT USING THE "SEARCH". I WANTED SOME OUT SIDE KNOWLEDGE. NOT TO SAY THAT THE PRODUCT IS NOT NEEDED, BUT JUST WANT TO HEAR IT FROM SOMEONE NOT TRYING TO MAKE A BUCK.

THANKS AGAIN.
V

 

^^ the ap2 shaft is longer. thats all

 

AP2 and AP1 driveshafts have the same part numbers so, I question that comment. They have the same OLD part# too which suggests they were never updated since '00.

Basically all CV joint type drive-shafts have the ability to extend and contract. They have to because the suspension cycles up and down but, the diff it bolted down tight. On an older car, the shafts probably already have wear so, by lowering, you get it into unworn sections of the CV.

I'm not seeing any really useful information here how much lowering requires a spacer.

 

Alright here it is.... shafts are the same for ap1 and ap2 differntial joints are longer on the ap2.

But the question remains, what is the max drop w/out spacer.

 

I've been told you need them for anything lower than 1 inch... but that was from a guy trying to sell them to me so...

 

So, when I'm diving down the road and hit a bump. The suspension's going to cycle from normal ride height, to full bump (as far up as it'll go) then back to normal ride height. The axles are designed to permit the suspension to cycle from full droop to full bump.

What does it look like when you lower the suspension? Like you've hit a bump and the suspension's cycled down. It's perpetually in "I've hit a bump" mode. Why does this cause vibration? It I switch out axles and have new ones installed, do I still need a spacer?

I have confirmed that the output flanges on the AP1 Diff are a different part# then on the AP2.