Guest RotaryBuddha Posted September 29, 2007 Share Posted September 29, 2007 Hey aux, i have a Turbo 2 motor and trans sitting in my shop that i really want to get rid of, but how do i know whether its a Series 5 motor? Thanks in advance. Ryan if this is indeed a series 5 motor maybe we can work something out Another way of telling is that the series 4 on the water pump outlet had a metal piece with a pressure cap. On the series 5 it was just a plastic piece with no cap. Also auxilary what are you using for a oil cooler? Quote Link to comment Share on other sites More sharing options...
auxilary Posted September 30, 2007 Author Share Posted September 30, 2007 What i find crazy is how 1.3 L rotarys run MASSIVE turbos.much larger than t04's but i guess at 8k+ rpm that small motor is flowing ALOT of air. 2 huge exhaust ports dumping lot of exhaust in pulses.... for example my turbo has .84 a/r for exhaust, and that's small because i wanted more midrange power. common is .96 or 1.0 a/r buddha: fc stock oil cooler w/ -10an lines. Quote Link to comment Share on other sites More sharing options...
auxilary Posted October 1, 2007 Author Share Posted October 1, 2007 Throttle assembly done, and booster lines done (mazda rx7 vaccuum tube, bent, and half of Z rubber tubing). Throttle cable and plate out of an infiniti g20 Quote Link to comment Share on other sites More sharing options...
SR240Z Posted October 1, 2007 Share Posted October 1, 2007 by the way, how do you check compression on a rotary? i put the motor up for sale but i know someone will ask me for a compression test. Quote Link to comment Share on other sites More sharing options...
auxilary Posted October 2, 2007 Author Share Posted October 2, 2007 same as a piston motor - put the compression plug tester into the spark plug socket, crank... you just have to use a very short probe, since rotary spark plugs don't stick out. pull one out, and you'll see. Normal compression ratio for a rotary is about 90-110psi, if memory serves you can also check instructions here: http://www.fd3s.net/compression_test.html and tips here: http://www.rx7club.com/showthread.php?t=386678 Quote Link to comment Share on other sites More sharing options...
SR240Z Posted October 2, 2007 Share Posted October 2, 2007 thanks for the help, looks like the first rotor needs a rebuild on the seals and the second rotor (closest to the trans) has perfect compression. Know anyone who wants a motor/trans to rebuild for a race setup? Quote Link to comment Share on other sites More sharing options...
auxilary Posted October 2, 2007 Author Share Posted October 2, 2007 just an fyi, there's no point in doing just 1 rotor rebuild, because the engine comes apart like a sandwich. You'd have to do the same amount of work to replace seals and springs on both rotors as you would on just one. And unfortunately, no I don;t know anyone that needs an s4 t2 motor. Maybe Owen? Quote Link to comment Share on other sites More sharing options...
younG_Gunner Posted October 3, 2007 Share Posted October 3, 2007 Glad to see that this thing is rolling now Aux. Don't take this the wrong way Aux, but whats wrong with using the S4 T2 engine? The turbo model made 182hp, which is decent. Even with slight mods like intake and exhaust, plus supporting mods like fuel, it would make a substantial difference in power. Plus finding a piggyback would be relatively cheap. The Rtek 2.0 controls fuel and timing to an extent. I've seen some S4's in the 300hp range using only the Rtek. I don't see why it would be so bad? But then again, I don't know my Z's as well as my rotaries yet. Guess this was just a rant! :lmao: Quote Link to comment Share on other sites More sharing options...
auxilary Posted October 4, 2007 Author Share Posted October 4, 2007 I didn't say there's anything wrong with S4 T2 motor... just that the option I had cost almost the same, and made more power stock. IIRC, s4 t2 fuel rails and some other misc functions were upgraded in the s5 t2 model Quote Link to comment Share on other sites More sharing options...
younG_Gunner Posted October 4, 2007 Share Posted October 4, 2007 I see. Between the options, I think you definitely picked up the better option. And yes, the S4 TII had a pulsation dampener that became leaky after age. IIRC the S5 switched to a banjo bolt type module. Quote Link to comment Share on other sites More sharing options...
SR240Z Posted October 5, 2007 Share Posted October 5, 2007 you want my S4 TII motor and trans (needs rebuild) for $400 and you come pick it up? Quote Link to comment Share on other sites More sharing options...
younG_Gunner Posted October 6, 2007 Share Posted October 6, 2007 SR240Z, seriously bro. I am very tempted to come down and pick it up. Do you think you could let me give it some thought? Quote Link to comment Share on other sites More sharing options...
SR240Z Posted October 6, 2007 Share Posted October 6, 2007 Not a problem, just shoot me a message when you are ready or you can give me a call. Quote Link to comment Share on other sites More sharing options...
younG_Gunner Posted October 9, 2007 Share Posted October 9, 2007 The only problem for me is finding time and finding a way to get it back up to norcal. I don't have a truck. Quote Link to comment Share on other sites More sharing options...
auxilary Posted October 9, 2007 Author Share Posted October 9, 2007 Ship it? Slap it on a pallet, crate it up, voila. Also, would you guys mind taking the transaction communication to private messages? Quote Link to comment Share on other sites More sharing options...
younG_Gunner Posted October 10, 2007 Share Posted October 10, 2007 Yeah. I'm really sorry about that Aux. My fault Quote Link to comment Share on other sites More sharing options...
happynukes Posted October 26, 2007 Share Posted October 26, 2007 isn't this kind of sacreligeous the rx7 and z guys don't get along very well around here but props on the fabrication i don't think i have the patience for that Quote Link to comment Share on other sites More sharing options...
auxilary Posted November 7, 2007 Author Share Posted November 7, 2007 Motor's out of the car for the last time, so if anyone wants dimensions of my motor mount, I can document them... I think. It's not the most straight forward mount out there to duplicate though Quote Link to comment Share on other sites More sharing options...
younG_Gunner Posted November 12, 2007 Share Posted November 12, 2007 I do! Can you please PM them to me! Thanks in advance Aux! -Ray Quote Link to comment Share on other sites More sharing options...
Guest RotaryBuddha Posted November 14, 2007 Share Posted November 14, 2007 Motor's out of the car for the last time, so if anyone wants dimensions of my motor mount, I can document them... I think. It's not the most straight forward mount out there to duplicate though Yes I want dimensions as well. Hell I will even paypal you some money for a drawing of it and lots of pictures. Quote Link to comment Share on other sites More sharing options...
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