|
New Compression Tester, handheld and digital!!
Hello fellow rotorheads! As you can tell by my post count I'm not a normal visitor to the RX-8 forums, most of my time is spent over at the RX-7 Club. But I've been putting the finishing touches on my handheld digital compression tester and I figure anyone with a rotary could find it interesting. I designed this tester because the other portable options out there are just ridiculously overpriced for what they do, and my garage is no place for my laptop. It'll also come in handy for taking with me to look at cars I may be interested in buying. The tester uses a 200 psi pressure transducer, a microprocessor and a 16x2 lcd to measure compression pulses and display them along with RPM. I have thought about selling these, but nothing is set in stone yet. Right now I have 3 prototypes built and testing continues. Anyway, below is a pic of the first prototype and a video below of the second prototype being tested using my test rig. The test rig is just a ball valve with some disconnects and my air compressor attached to it so that I can simulate compression pulses of an engine. Well, what do you think? :-)
http://www.twistedrotors.com/images/tester2.JPG http://www.youtube.com/watch?v=tgOlhYgH0io -John |
Originally Posted by TwistedRotors
(Post 2847991)
Hello fellow rotorheads! As you can tell by my post count I'm not a normal visitor to the RX-8 forums, most of my time is spent over at the RX-7 Club. But I've been putting the finishing touches on my handheld digital compression tester and I figure anyone with a rotary could find it interesting. I designed this tester because the other portable options out there are just ridiculously overpriced for what they do, and my garage is no place for my laptop. It'll also come in handy for taking with me to look at cars I may be interested in buying. The tester uses a 200 psi pressure transducer, a microprocessor and a 16x2 lcd to measure compression pulses and display them along with RPM. I have thought about selling these, but nothing is set in stone yet. Price would be around $250. Right now I have 3 prototypes built and testing continues. Anyway, below is a pic of the first prototype and a video below of the second prototype being tested using my test rig. The test rig is just a ball valve with some disconnects and my air compressor attached to it so that I can simulate compression pulses of an engine. Well, what do you think? :-)
http://www.twistedrotors.com/images/tester2.JPG http://www.youtube.com/watch?v=tgOlhYgH0io -John |
Hi Mark. It reads 3 pulses and displays them until another 3 are read.
-John |
Very cool John! Looks a lot simpler than my laptop set up
|
considreing the stealership will change over a hundred bucks for a single check and have little faith they will actually do it correctly.... this is awesome
|
Looks cool :)
|
I like this.
|
When and where can I get one! :)
-Gil |
very nice! I have a sneaking suspicion that this will have a good size buyer base.
|
I could use one of these things right now....I'd love to see where my motor is sitting atm....since my idle vac seems on the low side of 14-15
|
Yeah I need one as well, It's been 13000 miles and I would like to know where it stands compared to when I had first bought it back in May last year.
|
nice!
|
I plan on buying one depending on how well it works.
Where does this connect to and how easy is it to use/operate for the average 8 owner. |
Thanks guys....I'm sorry I can't give a date on when I'll have these for sale. But once I've got the bugs worked out then I'll have them up for sale on my website.
As for operation, simple is the name of the game. Just pull a sparkplug out of each rotor housing, thread the adapter into the sparkplug hole, connect the sensor to the adapter, turn on the tester and turn your engine over! The 2nd car I tested was an RX-8 and lemme tell ya, I've got an FD and an FC and I don't envy you guys one bit when it comes to changing spark plugs!! Maybe we were doing something wrong, but man it was a pain in the A$$ getting to that front leading plug!! Oh, and the 8 that we checked was reading about 113-114 all around on a cold cold engine. I'm working on a getting a video of an actual car being tested and hope to have it up soon. :-) -John |
He used it on my car a couple of months ago when I was getting an alignment done.
Its incredibly simple and gives a reading for all three faces. the only downside was getting it in the spark plug hole! Did you figure that out yet? Edit: I can donate my car again to the cause. |
where do I sign up?
Mark me down as interested, and 250$ imo seems a reasonable price. |
sounds good
for the spark plugs, remove the driver side wheel and get at them from the fenderwell |
That wasn't the problem. My car was on a lift with the tire off.
The swivel piece that goes into the spark plug hole was a pain in the ass to get in. The tester itself worked flawlessly. I wouldn't mind buying one too. Wouldn't take too much extra work to test the compression every spark plug change. |
John set up a Group Buy thread with the mods!!! I can use this now
|
oh in that case, it's just a pita :)
|
If you have kids or a small asian nearby its not so bad. Unless you have naturally small girlish hands...
I think we went the asian route. |
^:lol:
|
this thing looks awesome... a group buy would certainly be in order..
how about the accurateness of it? as compared to the mazda tester? |
Originally Posted by HeavyMetal699
(Post 2848327)
If you have kids or a small asian nearby its not so bad. Unless you have naturally small girlish hands...
I think we went the asian route. -John |
I'll take one to when you get them up for sale.
|
| All times are GMT -5. The time now is 12:26 AM. |
© 2024 MH Sub I, LLC dba Internet Brands