Things To Do When on the INSIDE
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Rotary Freak
Joined: Nov 2001
Posts: 2,715
Likes: 1
From: trinidad and tobago
Things To Do When on the INSIDE
I am going to pull my motor AGAIN soon to replace those faulty O rings ( hope thats all) , I plan to replace the oil pump and also the regulator with a 105-115 psi HP one so I can safety run 10K rpms . Is there anything else I could / should do whilst I'm in there ? , I am also using all original MAZDA soft parts , I use original 3pc seals , rotors are cleaarenced , e shaft polished ,oil jets replaced with webber carby jets and the thermal bypass pellet replaced with the plug.
Weird Cat Man
Joined: Aug 2001
Posts: 2,868
Likes: 3
From: A pale blue dot
I was reading a technical thing on rotary engines and they had a graph showing the load on the stationary gear teeth as a function of RPM.
Loads doubled when going from 8000 to 9000 RPM. I don't even want to think about what they're like at 10000
Brian
Loads doubled when going from 8000 to 9000 RPM. I don't even want to think about what they're like at 10000
Brian
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Full Member
Joined: Mar 2001
Posts: 222
Likes: 1
From: Okinawa, Japan
I have seen 14998rpm's on Cosmo(same as FD) stationary gears. I have seen 12,000rpm's every weekend for a year on the same motor. I personally was reving to 10,500rpm's on my 1/2 bridge motor. The FD stationary gears can take it. **** I rev 9500+ on my sideported motor. Yes the motor probably won't last 10yrs, but it is fun as hell. I do advise using the same weight rotors. The rotors are stamped with letters on the side similar to the #'s marking side seal grooves. There are A,B,C,D,and E rotors. You can use letters that are next to each other. Use an A with a B or a B with a C and so on.
Weird Cat Man
Joined: Aug 2001
Posts: 2,868
Likes: 3
From: A pale blue dot
Originally posted by Marcel Burkett
Is that so ? , care to post a link to that info ?.
Is that so ? , care to post a link to that info ?.
ftp.zeroglabs.com
username: rx7
password: rx7
file is "REbyKenichiYamamoto.pdf" -- it's in there.
Brian
50mpg - oooooh yeah!
Joined: Mar 2003
Posts: 527
Likes: 0
From: UK
and also, at around 88000Rpm, the e-shaft starts to flex.
now imagine all those precision-machined clearances throughout your engine, and now imagine having the main supporting section moving about.
Say bye-bye internals!!
now imagine all those precision-machined clearances throughout your engine, and now imagine having the main supporting section moving about.
Say bye-bye internals!!
it WILL run
Joined: Dec 2002
Posts: 2,017
Likes: 1
From: Raleigh,MS
if you dont hold it too high it should do 9500 rpms
but dont hold it
and be warned the apex seals wont last all that long with the chatter from that speed
you could always get ceramic seals :S
but dont hold it
and be warned the apex seals wont last all that long with the chatter from that speed
you could always get ceramic seals :S
Thread Starter
Rotary Freak
Joined: Nov 2001
Posts: 2,715
Likes: 1
From: trinidad and tobago
The reason for the clearancing of the rotors is to ALLOW the additional movement when doinng higher rpm's.The ideal would be something like the GURU two piece e shaft with center bearing (planned for my semi pp motor) . Everyone says get hardened stationary gears ...., but does everyone know that the FD gears are factory hardened ?.
I think higher oil pressure would be enough , as I said ,I am already doing 9000rpm with my present mods without problems, I will let you'll know whal happens.
I think higher oil pressure would be enough , as I said ,I am already doing 9000rpm with my present mods without problems, I will let you'll know whal happens.
50mpg - oooooh yeah!
Joined: Mar 2003
Posts: 527
Likes: 0
From: UK
Here's an idea, instead of paying shitloads of cash for a 2-piece e-shaft and bearing, why not get a 2-piece roller-bearing instead?
Simply fit it around the e-shaft when you're assembling it, and voila!!
A centre bearing
Simply fit it around the e-shaft when you're assembling it, and voila!!
A centre bearing
Old [Sch|F]ool
Joined: May 2001
Posts: 12,848
Likes: 563
From: Cleveland, Ohio, USA
Originally posted by Wargasm
On my FTP....
ftp.zeroglabs.com
username: rx7
password: rx7
file is "REbyKenichiYamamoto.pdf" -- it's in there.
Brian
On my FTP....
ftp.zeroglabs.com
username: rx7
password: rx7
file is "REbyKenichiYamamoto.pdf" -- it's in there.
Brian
Code:
Connected to ftp.zeroglabs.com. 220 ZGRL FTP User (ftp.zeroglabs.com:(none)): rx7 331 Password required for rx7. Password: 230 User rx7 logged in. ftp> dir 200 Port command successful. 150 Opening data connection for directory list. drwxr-xr-x 1 ftp ftp 0 Jul 27 2001 2nd_Gen_RX-7_Manual drwxr-xr-x 1 ftp ftp 0 Dec 01 2003 3rd_Gen_RX-7_Manual drwxr-xr-x 1 ftp ftp 0 Jan 03 19:18 Car_Movies drwxr-xr-x 1 ftp ftp 0 Jan 26 19:03 Car_Movies_2 drwxr-xr-x 1 ftp ftp 0 Feb 09 2002 RX-7_Parts_Microfiches drwxr-xr-x 1 ftp ftp 0 Jan 23 07:27 Upload_Files -rw-r--r-- 1 ftp ftp 976017 Jun 23 2003 93_vachoses_5speed_ONLY.j pg -rw-r--r-- 1 ftp ftp 173024 Feb 16 2001 psremove.zip -rw-r--r-- 1 ftp ftp 3573055 Jan 22 17:19 REbyKenichiYamamoto.pdf -rw-r--r-- 1 ftp ftp 282112 Aug 25 2003 renesis_paper.doc -rw-r--r-- 1 ftp ftp 1217295 Jan 26 2002 Rotary Math.pdf -rw-r--r-- 1 ftp ftp 101834 Feb 09 2002 wheelcap.zip 226 Transfer ok ftp: 884 bytes received in 0.17Seconds 5.17Kbytes/sec. ftp> binary 200 Type set to I. ftp> get REbyKenichiYamamoto.pdf 200 Port command successful. 150 Opening data connection for REbyKenichiYamamoto.pdf (3573055 bytes). 226 Transfer ok ftp: 3573055 bytes received in 995.78Seconds 3.59Kbytes/sec. ftp>
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