Carbon8 Build
#456
Looks like the TR-01 is going on sale again for the holiday with limited supply starting next week, plus its 50 bucks cheaper then the RD one with no display.
Does the RD show RPM, and interpret the results or just display the graph in PSI, does it also distinguish rotor face?
Does the RD show RPM, and interpret the results or just display the graph in PSI, does it also distinguish rotor face?
#457
WENTGERMAN
iTrader: (6)
Looks like the TR-01 is going on sale again for the holiday with limited supply starting next week, plus its 50 bucks cheaper then the RD one with no display.
Does the RD show RPM, and interpret the results or just display the graph in PSI, does it also distinguish rotor face?
Does the RD show RPM, and interpret the results or just display the graph in PSI, does it also distinguish rotor face?
Personally I'd save up some extra cheese and get the OEM mazda one its much easier to use.
#458
I don't think I cant justify 2K for a tester, or 800 for a used one.
When the new handheld from twistedrotors seems to do the exact same thing for 350, there having a special black friday sale with a limited supply, I am waiting patiently for the purchase button to be activated so I can pick one up.
If I miss out for some unfortunate reason I will get the RD one, but the idea of a handheld IMO is just more practical for me.
Also anyone have anything on rear subframe removal, can't find it in any of my service docs and just want to take a look at what alignment specs I need to be concerned with.
When the new handheld from twistedrotors seems to do the exact same thing for 350, there having a special black friday sale with a limited supply, I am waiting patiently for the purchase button to be activated so I can pick one up.
If I miss out for some unfortunate reason I will get the RD one, but the idea of a handheld IMO is just more practical for me.
Also anyone have anything on rear subframe removal, can't find it in any of my service docs and just want to take a look at what alignment specs I need to be concerned with.
Last edited by Carbon8; 11-26-2013 at 07:24 AM.
#459
Boosted Kiwi
iTrader: (2)
If you are only using it for yourself you don't need anything flash .
Just get an ordinary compression tester and take out the check valve . When you test the compression , take a video of the gauge as you do it . play the video back in slo-mo (if you can ) and record the results of each pulse .
Just get an ordinary compression tester and take out the check valve . When you test the compression , take a video of the gauge as you do it . play the video back in slo-mo (if you can ) and record the results of each pulse .
#461
SARX Legend
iTrader: (46)
It's all about the accuracy and the hardware, when you price the pressure transducers used you will see why some are more expensive than others. I'd have to see and try the Twisted Rotors one in person before I would be sold on it because it must use a cheaper transducer.
#465
Slightly unhappy considering its a brand new Pettit build with 3K on it and is only coming in at 7, which IMO is failing.
Testing done at sea level, engine was at 170 when starting and 130 when finished. Guess I will be calling Cam next week as to me that is not acceptable for a basically brand new motor.
What do you think?
Testing done at sea level, engine was at 170 when starting and 130 when finished. Guess I will be calling Cam next week as to me that is not acceptable for a basically brand new motor.
What do you think?
#466
Registered
iTrader: (2)
Join Date: Oct 2007
Location: Pacific Northwest
Posts: 16,684
Likes: 0
Received 252 Likes
on
110 Posts
At 3k, I'd expect the compression to still be rising slightly. I've seen a few places where the seals won't completely lap in until 6k or so. But yeah, still lower than it should be, I'd give them a call.
#468
SARX Legend
iTrader: (46)
Don't you have the S2 starter? That is low compared to mine and one other S2 starter we did installed for a compression test (not that is matters as far as your results are concerned, just mentioning it). Also, this is a new tester no? I would test it on another well running 8 just to get a comparison.
#471
No I don't unfortunately.
Off to get a good old piston tester to see what it says. If it stays low Ill have Mazda check it out this week. Then Call Cam.
Seems strange that both front and rear would be low at the same time at 3K so I am not sure exactly what to think about it. Nor if this is normal considering I have different seals and my rotors where machined
Also according to RB minimum compression is 75 PSI and that ported engines can range from 90-120 PSI for normal range.
Off to get a good old piston tester to see what it says. If it stays low Ill have Mazda check it out this week. Then Call Cam.
Seems strange that both front and rear would be low at the same time at 3K so I am not sure exactly what to think about it. Nor if this is normal considering I have different seals and my rotors where machined
Also according to RB minimum compression is 75 PSI and that ported engines can range from 90-120 PSI for normal range.
Last edited by Carbon8; 12-15-2013 at 11:21 AM.
#472
SARX Legend
iTrader: (46)
I have seen engines fail evenly on both housings but usually it is the rear that goes first. But in this case we are talking about a fresh engine so it doesn't look good. My boosted, ported engine has 24k on it and last month when I compression tested it, it was 115psi or so across the board on both housings.
#474
Modulated Moderator
iTrader: (3)
What kind of seals did you build with? Did the engine get ported? That can make a difference as well
Also what did they use for corner seals if they went to full height seals?