Swapping 325e cluster to 325is

[CNDC]

So recently I swapped out my non working 325e gauge cluster with redline at 4500 to some sort of 325i/is cluster off an 89 E30 with redline at 6000. Now I was wondering if there is any downside to doing this besides that the redline will not be correct? Everything will read accurate right? or are somethings not, such as the fuel gauge because when I swapped in the new gauge cluster it read that i had 3/4th tanks compared to the 1/2 tank that it read in my old cluster. Information on this would be appreciated Thanks.

[Court M3]

tach might be off and fuel gauge. Same as when I swapped out my early euro gauge for a later model. Change the fuel gauge and it will be correct.

[E30Idea]

^^ Truth. The fuel gauge is your only worry. HOWEVER, if your redline is only at 6k on the new cluster it is a super ETA cluster not an "is". I might be wrong. Some correct me if I am.

[CNDC]

well its around there. I think it actually might be 6500 rpm, Either way would the RPMs still be calibrated?

[MR 325]

I swapped an 87 325iS cluster in to my 85 325e and it works perfectly.

[scabzzzz]

i think the clusters should be the same as long as its coded for 6 cylinder tachometry.
Just be careful though with buying a tach that reads deceiving rpm redlines. thats not good.. i mean hitting the fuel cuttoff is fine but eta motors arent extremely happy being that high up in the revolutions anyways.. i hope you have a chip..