HH and PackV8: talked to Westach regarding misreading on the 2CT34 6V 4imp/rev rated at 3500 rpms....They said "send it back, they would recalibrate it"....I rounded out the formula and told them that it should read 2370 rpms...They will make an adjustment to reflect those rpms at 70mph...I asked if I could do that...NO, the adjustments are inside the casing and they would do it to preserve the warranty....soooo, if anyone is interested in the product, let them know in advance what your numbers should be....Dick

Packv8: the tire dia. is 29" (radials), the rear end is a 4:09 but a 2:92 in overdrive which is used 99% of the time as I'm just off the Highway..I chose 70mph because the car seems comfortable at that speed and I keep up with the traffic...there are no options for # of cylinders on the tach....the instructions given with the tach showed direct connection ( + and - ) on the coil with the red and black wires...couldn't contact Westach today as there not open on saturdays...I'll explain my problem and see if there are options but I doubt it...I guess I'm interested in knowing if others have had this problem and any solution....Thanks Dick

HOWARD: I did not connect to the distributor...their instructions told me to connect both wires to the coil...the black to the pos. and rad to the neg. which I did.... the pos. pole does go to the distributor wire on the coil...I had called them on that and they said that was correct...I will discuss sheilding with them...thanks Dick

HH56: I purchased the Westach 2CT34-6V 4imp/rev. and installed as directed....tested vehicle at 70 mph and dial showed 2800 rpms..I was disappointed as my previous test with an older Sundeen tach had shown 2300 rpms...I used all the formulas for computing RPM - Gear Ratio- MPH with known tire diameter...all showed that the rpms at 70 mph with 29" tire dia, to be 2368 rpms...which I find reasonable...How do I account for the misreading on the Westach (2800rpms)??? I purchased the one rated at 3500 rpms...the Custom8 is rated at 3600rpms...should I have purchased a 5000rpm indicator....I can't see how that would help...am I on the right track ???? when I computed the rpms at 2800, I found that the gear ratio would be 3:44 but the manual says its 2:92 in overdrive...can the Westach be adjusted, perhaps thats a question reserved for the Company...Dick

Thanks again to Howard and Phil...I have a lot to work on, greatly appreciated...Dick

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Thanks Howard....Westach had 5 or 6 suitable tachs at 3500rpms....hate to show my ignorance but some have different ranges (1 1/2 to 3 imp/rev) what does that represent ? does it matter...all seem to be pos. or neg. ground...?

read with interest your remarks concerning limiting rpm's on your '47 clipper...I have been wanting to have a RPM readout capability on my 48 custom8 club sedan but cannot locate a 6V tach....I'm assuming you've had success with a 12V tach ?? pardon my ignorance but how would that be hooked-up ? My '48 has a 4.06 rear end but with overdrive it reverts to a 2.92....at 70mph in overdrive my test tach shows 2300 rpm's...I would like to know what my engine is doing all the time...thanks

Thanks Dell: I realize others have removed these radios so I can't see why I can't. I've started by just analyzing the glove box installation and I'm sure it will uncover the next step, when removed...Thanks to all for all the advice...loved your car photo

Randy; Thanks for your suggestions and all the others who have helped...I agree, the radio must come out thru the rear...some challenge...my car photo is in the 2255 section..

Thanks HH56: I agree radio must come out thru the back but seems like an unmanagable situation...your diagram and instructions are a great help..I must get the courage to do the job as I'm determined to get the radio working to perfection....the touring season is upon us so I'm not so sure about starting this task right now...Thanks again