xm-221 1,803 Posted July 29, 2013 As the thread title suggests lads and ladies, I'm after information on what the difference is between 6cyl and V8 gauge clusters. We all know to look for the sticker on the back that says whether or not it is 6cyl or V8. Sometimes that sticker is long gone unfortunately, so what I'm after is the circuit board differences between the two. I have a 6cyl cluster here that has the following etched into the boards between the Temp & Alt gauges: VDO Australia 34630 - BOARD 23396 - ASSY Is this the same code for all the PCB's or does it change with the V8 cluster? (Fairlane clusters will obviously be different) I seem to remember a drunken discussion about the S Pac clusters (possibly when I was in Wagga Wagga) about the only differences being in some of the resistors being a different value. Any help on this topic would be fantastic as I know some of us would like to be able to identify a V8 cluster from a 6cyl one at a glance. Cheers. Glenn. 1 Thom reacted to this Share this post Link to post Share on other sites
BBS XE 160 Posted July 29, 2013 I could be wrong but I'd say it is just a resistor difference to correct tacho pulses between 6 and 8 cylinder. I've never looked inside said clusters before so wouldn't have a clue where the resistor/s are but a visual id or check with multimeter would tell you the different resistor values. Need someone with both type clusters to pull them apart and check. Share this post Link to post Share on other sites
xm-221 1,803 Posted July 30, 2013 I've got plenty of 6cyl clusters here to check, just no V8 ones. Share this post Link to post Share on other sites
SLO247 1,713 Posted July 30, 2013 I've got a V8 one here, when its out next I'll check. Share this post Link to post Share on other sites
gerg 10,871 Posted July 30, 2013 I'm using a 6 cyl cluster with my v8. There's a trimpot down the side of the tacho that you adjust the rpm with. Even without calibration gear you can get it fairly close. To get you in the ballpark, set your fast idle up to show 2000 rpm on the 6 cyl setting. Adjust the trimpot so at this engine rpm the tacho now shows 1500. Congrats, you now have a V8 tacho. 1 BBS XE reacted to this Share this post Link to post Share on other sites
hendrixhc 10,921 Posted July 30, 2013 While we are on the subject does any one know the difference between the 6 and 8 Tacho in a XCGS? Share this post Link to post Share on other sites
scottly 475 Posted July 30, 2013 I'm using a 6 cyl cluster with my v8. There's a trimpot down the side of the tacho that you adjust the rpm with. Even without calibration gear you can get it fairly close. To get you in the ballpark, set your fast idle up to show 2000 rpm on the 6 cyl setting. Adjust the trimpot so at this engine rpm the tacho now shows 1500. Congrats, you now have a V8 tacho. any chance some one can post a pic on where this trimpot is and what it looks like im keen to convert my 6 tach to a 8 tach cheers scott Share this post Link to post Share on other sites
gerg 10,871 Posted July 30, 2013 I'm referring to XD/E cluster, but I'm not sure if others are similar. Definitely not XF, as they never had V8s. Share this post Link to post Share on other sites
xcsam 10 Posted July 30, 2013 While we are on the subject does any one know the difference between the 6 and 8 Tacho in a XCGS? The only difference I see is the redline on the tacho... Share this post Link to post Share on other sites
BBS XE 160 Posted August 2, 2013 I'm using a 6 cyl cluster with my v8. There's a trimpot down the side of the tacho that you adjust the rpm with. Even without calibration gear you can get it fairly close. To get you in the ballpark, set your fast idle up to show 2000 rpm on the 6 cyl setting. Adjust the trimpot so at this engine rpm the tacho now shows 1500. Congrats, you now have a V8 tacho. That's handy then! I've seen a few cheap clusters at swap meets that I could've bought if I knew that. Share this post Link to post Share on other sites
jca25 1,034 Posted August 2, 2013 While we are on the subject does any one know the difference between the 6 and 8 Tacho in a XCGS? on the face of the tacho their is a 6 or 8 on it down near the bottom Share this post Link to post Share on other sites