90-91 Si guage cluster

[91civicRacer]

Is the 90-91 Si clusters electronic or mechanical? I'm going to do a B16A swap into my 91 Civic Si and I want the speedo to read correctly. I think the JDM SiR cluster is electronic so I'm thinkin the B16A needs a electronic cluster...not sure though. Is modification involved with the Si unit, what will I need to do and will I need a electronic vss to get it to read correctly or will it read accurately the way it is?

[Fishcat37]

the 88-91 usdm si clusters operate the speedo via mechanically driven VSS. What i did was since the B16 came w/ an electronic vss, i used the gear that goes into the trans from the Y1, and used the mechanical VSS top from the old L3 Si trans...to make one hybrid vss. speedo works fine that way...and VTEC started working once i did that

[civickiller]

hey fishcat, or anyone, u wouldnt happne to know what the calbe ls tranny runs off mehcnaical or electrical ?

[Fishcat37]

Cable LS trans (usdm S1) runs off of a mechanical VSS. As does the usdm 92-93 GS-R YS1 trans.