Smiths 8 cyl tach to 4 cyl???

Started by Hercplt, January 10, 2021, 04:19:35 PM

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Hercplt

Ok... I acquired a Smiths tach (RVI 1000)... its a long story but its marked for an 8 cyl engine.

Question... can this be converted to use on a 4 cyl??
1980 Mini 1000 (Canadian Spec).
998cc +60.  12G295 Head (ported, skimmed etc), VP7 Cam, Twin HS2.... sweet sweet 7.5" Cooper brakes!

MiniDave

Sure, probably read half speed tho   ;D

I'm not sure, but maybe you could contact Smiths and ask them?
Complete failure at retirement

1989 Cooper Racing Green
2009 Clubman S
2014 Audi Allroad

BruceK

#2
Must look pretty cool for you to think about using it that way.  Pics? 


I have no idea if this product can help.  I started reading but my eyes glazed over.   

http://vi.raptor.ebaydesc.com/ws/eBayISAPI.dll?ViewItemDescV4&item=141931549970&category=33679&pm=1&ds=0&t=1594481770000&ver=0&cspheader=1
1988 Austin Mini
2002 MINI Cooper S
1992 Toyota LiteAce (JDM)
1997 Jeep Wrangler Sahara

Hercplt

It is a nice gauge... but I'll likely move it along and source a 4 cyl version...
1980 Mini 1000 (Canadian Spec).
998cc +60.  12G295 Head (ported, skimmed etc), VP7 Cam, Twin HS2.... sweet sweet 7.5" Cooper brakes!

cstudep

I modified one the other direction for a guy a few years ago. Not sure if it works in reverse or not. Used a timing light with RPM readout to dial it in.

http://www.britishv8.org/Articles/MGB-to-V8-Tach-Conversion.htm