sorry if this is the wrong forum, but it is probaly the most appropriate?

i have my old JDM LCA's from my old JDM DA6 Integra XSi and i have just got a 98 Integra VTiR (same as GSR) and i am fitting Cusco Zero2 coilovers and need ITR rear LCA's

the DA6 ones might be similar, but are they exactly the same?

anyone know from experience?

i know you can fit ITR sussy to DA9 Integras by fitting the ITR rear LCA's, but does it necessarily work the other way too?

TIA

 

This may help you out.

 

thanks Marc, great pics!

so it seems the itr LCA has the strut balljoint bolt about an inch further out compared to the Da6 one.

but lenght is identical?

will the strut mounting bolt difference have much of an effect if i am using coilovers?

 

Interesting... i wonder if there's a camber advantage to running these. Although if alternate LCA's are allowed where you're racing, i'm sure adjustable upper links are.

 

length to be the same, therefore no camber difference. only thing that looks different is wheel rate.

wouldnt this be more appropriate in the Integra or Type R forum, mods??

 

so what is the wheel rate? (newbie here)

could it be the ratio of how much the shock moves relative to the wheel?

so the shock would move 'more' with the DA6 LCAs because the bolt is located closer inboard?

what effect would this have on a) handling or b) shock life?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tyson &raquo;</TD></TR><TR><TD CLASS="quote"> wouldnt this be more appropriate in the Integra or Type R forum, mods??</TD></TR></TABLE>

due to the <U>or</U> in that question, my guess is no.

this is a question about track racing suspension - and to me this is the suspension forum...

 

er, same length... d'oh, i'm not paying attention

The shock would be moved further inboard compared to the DC2 ITR unit, so there would be slightly less wheel rate for a given spring rate. Worth worrying about? I dont know.

 

Looks to me like the DA will have less wheel rate because the shock is further inboard on the LCA. Although now that I think about it, the Da could have the upper mont in a different place, so it could be a wash.

UNless the DA LCA was intalled on the DC2,. then you'd need to see how everything lined up.

 

OK - the install went fine.

i had to mill a tiny bit off the bottom mounts of the rear shocks where the bolt goes through as the DA LCA's have about 2mm narrower mount point.

the track with the LCA's is identical, but it seems that the wheel rate will be slightly changed, (but to what detriment/benefit?)

oh - and the sway bar endlinks lined up OK too

 

The motion ratio is the shock deflection versus wheel deflection. The wheel rate is = (spring rate)*(motion ratio)^2.

You can't really look at the control arm and determine how the MR changes. Unless you have a computer simulation with your car's geometry installed, it is best to measure it. The stock DA/ITR is ~ 1.5fr and 1.35r. See what your's is.