have any of the members bought one of these compression testers?
http://rotarydiagnostics.com/

they claim that the following people have bought a tester off of them:

SpeedSource, Inc., Atkins Rotary, Daryl Drummond Enterprises, Diasio Car Company, PF Supercars of MD, Banzai Racing, KDR Performance, Mazda Rotary Club of Switzerland, several Mazda dealerships, and numerous individuals in the US, Europe, Asia and Australia.


I just ordered one of the mulit rotor testing unit and would like any feedback that other members might have.

kenn

 

I've seen that - big beef I have is it's a pretty homemade unit for $350. No display, you have to use a laptop to see the output.

A while back, someone had plans to basically make your own for VERY cheap using a similar setup.

If it had it's own display, I'd be on it.

Dale

 

Yeah but if you got the skills to make it and make it work, their are people like me that will buy it.

I don't know about that...regardless its still way cheaper than the alternatives for a premade unit.

the only other units I have seen are from a source in Japan that makes the newer digital style onesfor Mazda , it does not log, so you can not store and later compare data or anything like that and its right at 850.00 and can only do one rotor at a time (not that its essential to do more) and even the old paper trace units used are going for between 4~500 used.

so I think it will pay for itself reasonably quickly, just have to wait and see.

kenn

 

IMO, for home use it's a little overkill. For a shop, it would be ideal since you need exact numbers for customer cars. The "approximate" numbers the cheap piston compression testers give are typically enough for home use.

Now, if you do work for other people a lot (but aren't a shop), you may get your money's worth out of it.

 

Here's some info on making your own.

https://www.rx7club.com/showthread.p...iy+compression


Paul

 

that would sort of be me....i run a shop on the local navy base during the day and rebuild rotaries (and the occasional boinger) as a side job/semi professional hobby lets say it pays well in the tax free bracket of things

kenn

 

this looks very appealing.

FJORacing.com makes it's own line of SS pressure sensors. they offer a 0-200 which would work well. i use 3 of them on my car currently. fuel pressure, oil pressure and exhaust manifold back pressure.

combine it w a DAQ card and your laptop and away we go.

who has found the best DAQ card?

i am going to put a unit together.

thanks all for the info.

hc