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-   -   First engine teardown & rebuild? (https://www.rx7club.com/general-rotary-tech-support-11/first-engine-teardown-rebuild-628663/)

AlexG13B 03-01-07 08:38 PM

First engine teardown & rebuild?
 
i started to teardown this s4 Tii block. got it from a goood friend of mine (tofuball).
engine rotated by hand but rear rotor sounded a little low compared to front on compression.

UNKOWN MILEAGE & CONIDITION OF MOTOR PRIOR TO DISASSEMBLY

as i was tearing the motor down i notice the housings were black. (possible overheat condition?)

http://img74.imageshack.us/img74/359...s022rs2.th.jpg

I also notice like blueish spots or hues on the intake plate

http://img130.imageshack.us/img130/6...s020sm5.th.jpg

http://img45.imageshack.us/img45/548...s021td2.th.jpg

http://img102.imageshack.us/img102/6...s019fe5.th.jpg

http://img102.imageshack.us/img102/3...s026kt3.th.jpg

http://img45.imageshack.us/img45/2126/img4344ht4.th.jpg

REAR IRON
http://img102.imageshack.us/img102/2...s027rw6.th.jpg

DEEP GROOVE ON REAR HOUSING?
http://img186.imageshack.us/img186/8...s030uu3.th.jpg

http://img250.imageshack.us/img250/8...s029uo7.th.jpg

MORE REAR ROTOR HOUSING PICS
http://img171.imageshack.us/img171/2...s028ow7.th.jpg

http://img239.imageshack.us/img239/2...s031sp5.th.jpg


Rear Rotor Bearing HAS BLUE SPOTS AND SCRATCHES
http://img294.imageshack.us/img294/7...s024xt7.th.jpg

http://img171.imageshack.us/img171/3...s025ol6.th.jpg


ESHAFT WHERE BEARING RODE ON
http://img171.imageshack.us/img171/8...s032cd8.th.jpg

http://img171.imageshack.us/img171/3...s033ou3.th.jpg

I should be conituing the breakdown tomorrow with more pics to come.

trochoid 03-02-07 03:41 AM

Yep, it's been too hot. Also looks like the oil was too hot and not changed often enough. I would pass on that housing, bearings need replaced and the e-shaft is questionable. Make sure you spec the irons for warpage. If the other housing isn't grooved, it may be reuseabe.

AlexG13B 03-02-07 06:12 AM

ok i will keep dissassembling, please disregard the bridgeport iron, was put there by mistake.

Tofuball 03-02-07 06:47 AM

Awesome. I'm glad that engine isnt rusted from sitting for so long ;)

BDC 03-02-07 06:37 PM


Originally Posted by xboxthug13b
ok i will keep dissassembling, please disregard the bridgeport iron, was put there by mistake.

That looks like the one I did for SlammedBlk7. :)

B

AlexG13B 03-02-07 06:45 PM

ya sorry BDC, i use it as a wallpaper and put it up there by mistake ha.
what do u think of the motor?


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