Carbon Locked Motor (I searched)
02-18-08, 11:54 PM
#1
Full Member
Thread Starter
Join Date: Dec 2007
Location: Chicago
Posts: 137
Likes: 0
Received 0 Likes
on
0 Posts
Carbon Locked Motor (I searched)
I have a sa22 with a 13b that is locked up. I try turning it by hand but no dice. A few weeks ago I threw a bit of atf in there hoping to get it to turn but nada. Well now Iam debating whether I should pull the motor out a rebuild it or if anybody knows anything else I should try? I heard that my oil-control rings could be destroyed by letting the atf sit in it. I just had my other fb stolen and recovered this week so that motivated me to get off my ***! I have about 500 bucks that I can spend. Any insight would be greatly appreciated as I would like to have her back on the road by June.
02-19-08, 01:24 PM
#4
Lives on the Forum
Stupid question, but when you tried to turn the motor over by hand, was it in nuetral?
Try the powerfoam. If it is carbon that is locking the motor, then that will be your best bet. Won't help if its a broken apex seal that jammed itself in the motor though.
Try the powerfoam. If it is carbon that is locking the motor, then that will be your best bet. Won't help if its a broken apex seal that jammed itself in the motor though.
02-19-08, 02:02 PM
#5
Full Member
Thread Starter
Join Date: Dec 2007
Location: Chicago
Posts: 137
Likes: 0
Received 0 Likes
on
0 Posts
Yeah it was in neutral, I doubt the apex seals are broken. It died on my girlfriend about a year ago, after that I kinda gave up on it. Now I wanna put back on the road. But I gotta work these little bugs out, Iam going to power foam it tonight when I get home from work.
02-19-08, 02:38 PM
#6
Rotary Enthusiast
Join Date: Dec 2007
Location: Texas
Posts: 1,079
Likes: 0
Received 0 Likes
on
0 Posts
Well it's an SA with a 13b. Which is cool but still if you take it out your best to send it to a shop for a rebuild or core swap. It will probably need new housings (guess). At least a proper lapping etc. So it would not rotate with the electric starter huh?
Why doubt the Apex is broken. It's possible for that to go early sometimes and since that engine might of been rebuilt you don't know how good the lapping was or housing condition or if they used higher performance parts or kept some of the old parts. Etc.
Why doubt the Apex is broken. It's possible for that to go early sometimes and since that engine might of been rebuilt you don't know how good the lapping was or housing condition or if they used higher performance parts or kept some of the old parts. Etc.
02-19-08, 03:19 PM
#7
Even sitting after for that yr could only make thing worse...but also never doubt that the apex seal broke...or that the bearing spun and got stuck on the e-shaft...many things could have gone wrong...probably just best to pull it...and go inside and see what happen...
Trending Topics
02-19-08, 04:22 PM
#8
You searched?
Try the Frequently Asked Questions or FAQ thread. It's stickied at the top of the section, and I just got this out of it:
Q. Do you have an Rx7 you're trying to restore? A seized engine? a car that's been sitting for a few years? Wondering what the "ATF Treatment" is and how to do it without killing your engine?
A. Look here: Bringing a RX7 back to life
Jon
Try the Frequently Asked Questions or FAQ thread. It's stickied at the top of the section, and I just got this out of it:
Q. Do you have an Rx7 you're trying to restore? A seized engine? a car that's been sitting for a few years? Wondering what the "ATF Treatment" is and how to do it without killing your engine?
A. Look here: Bringing a RX7 back to life
Jon
02-20-08, 09:59 AM
#9
Full Member
Thread Starter
Join Date: Dec 2007
Location: Chicago
Posts: 137
Likes: 0
Received 0 Likes
on
0 Posts
Iam just going to pull it out soon. What specific tools would I need for a tear-down? I seen this guy selling a gasket kit for a 13b on ebay for 150 bucks so Iam going to jump on that.
02-20-08, 12:23 PM
#10
A gasket kit is good if you're tearing down a known-good motor, but if you pull it apart you'll probably find that you are going to need more than that.
Honestly, if you're out of options and you're getting ready to pull the motor for a rebuild, *try* the ATF/MMO thing suggested in that thread. My engine was completely seized when I started in on my project car, but some time, patience, and ATF freed it up and now I'm on my fourth season of running with the engine after it got unlocked that way.
It's cheaper and easier than pulling a motor and spending $1k on a rebuild. I say $1k because in all seriousness that's the minimum that anyone should spend on tearing apart an engine unless that engine has less than a season's worth of driving on it. Head over to www.atkinsrotary.com or www.racingbeat.com or www.mazdatrix.com to get an idea of what a rebuild kit consists of - a soft seal kit is only going to do your water jacket and oil pan seals, but if it's an original engine you're probably going to need most of the rest of a full rebuild kit too.
Jon
Honestly, if you're out of options and you're getting ready to pull the motor for a rebuild, *try* the ATF/MMO thing suggested in that thread. My engine was completely seized when I started in on my project car, but some time, patience, and ATF freed it up and now I'm on my fourth season of running with the engine after it got unlocked that way.
It's cheaper and easier than pulling a motor and spending $1k on a rebuild. I say $1k because in all seriousness that's the minimum that anyone should spend on tearing apart an engine unless that engine has less than a season's worth of driving on it. Head over to www.atkinsrotary.com or www.racingbeat.com or www.mazdatrix.com to get an idea of what a rebuild kit consists of - a soft seal kit is only going to do your water jacket and oil pan seals, but if it's an original engine you're probably going to need most of the rest of a full rebuild kit too.
Jon
02-20-08, 04:25 PM
#11
Full Member
Thread Starter
Join Date: Dec 2007
Location: Chicago
Posts: 137
Likes: 0
Received 0 Likes
on
0 Posts
A gasket kit is good if you're tearing down a known-good motor, but if you pull it apart you'll probably find that you are going to need more than that.
Honestly, if you're out of options and you're getting ready to pull the motor for a rebuild, *try* the ATF/MMO thing suggested in that thread. My engine was completely seized when I started in on my project car, but some time, patience, and ATF freed it up and now I'm on my fourth season of running with the engine after it got unlocked that way.
It's cheaper and easier than pulling a motor and spending $1k on a rebuild. I say $1k because in all seriousness that's the minimum that anyone should spend on tearing apart an engine unless that engine has less than a season's worth of driving on it. Head over to www.atkinsrotary.com or www.racingbeat.com or www.mazdatrix.com to get an idea of what a rebuild kit consists of - a soft seal kit is only going to do your water jacket and oil pan seals, but if it's an original engine you're probably going to need most of the rest of a full rebuild kit too.
Jon
Honestly, if you're out of options and you're getting ready to pull the motor for a rebuild, *try* the ATF/MMO thing suggested in that thread. My engine was completely seized when I started in on my project car, but some time, patience, and ATF freed it up and now I'm on my fourth season of running with the engine after it got unlocked that way.
It's cheaper and easier than pulling a motor and spending $1k on a rebuild. I say $1k because in all seriousness that's the minimum that anyone should spend on tearing apart an engine unless that engine has less than a season's worth of driving on it. Head over to www.atkinsrotary.com or www.racingbeat.com or www.mazdatrix.com to get an idea of what a rebuild kit consists of - a soft seal kit is only going to do your water jacket and oil pan seals, but if it's an original engine you're probably going to need most of the rest of a full rebuild kit too.
Jon
I got another problem I can't figure out what motor I have. Its a 13B but Iam really unsure of the year. Iam going to try to ATF the **** out of it, if it doesn't work Iam going to get my chips together and rebuild it the right way. What tools would be essential for a tear-down? I have a JEGS catalog so I have access to that stuff but anything that I might need let me know. Again thanks alot guys
02-20-08, 04:57 PM
#14
Just get your self a 255-300 peice craftman tool set bro...it will have all the sockets, and wrench's and ratchets that you will need...your also going to need a flywheel stopper and socket jack cherry picker jack stands...what else i know im missing a lot of stuff...don't really know unless im doing the job on my own car...lol
02-21-08, 10:41 AM
#15
For an engine build the trickiest parts are the Flywheel nut socket (52mm or two-and-one-eights-inches socket) and the measuring equipment you use to check clearances on seals and step-wear on the irons. Other than that it's basically just your standard metric toolkit (ratchet, sockets, wrenches, etc...) and preferably an impact gun and a torque wrench. A couple of metal files (for clearancing side seals etc...) some feeler gauges and lots of patience.
I would start by picking up a Heynes manual, they're pretty well done for our cars. Head to the FAQ and you'll find a link where you can download the FSM (Factory Shop Manual) for our cars, they're pretty helpful as well though I sometimes find the Heynes more detailed in places.
As for identifying the motor, pictures are the best way. We've got some people on here who are absolute masters at identifying random motors that aren't sitting in their original chassis if yours has had an engine swap. If it hasn't had an engine swap, then the only first gens with 13b engines were the 84-85 GSL-SE. Other than that they're 12a (big give-away for that one is the blue airbox for the carb)
Also, some good info on engine building can be had if you search for a thread by a guy named Aaron Cake where he did his engine build. He's got awesome pictures of the step by step process, though he does gloss over the measuring and clearancing of the seals and putting them on the rotor, but it's understandable since at that point in the process you've got assembly lube and/or vaseline all over your hands - not very conducive to picture taking.
www.rotaryengineillustrated.com is a good site, though its MUCH more confusing to navigate than it used to be.
There's an okay article on howstuffworks.com about the rotary engine. I give it a 6/10 just because it's not completely inaccurate, but it constantly tries to compare to piston engines instead of just teaching from the ground up.
But really spend time with the FAQ. There's a wealth of great info there, in the archive and buried in past threads with the search function. Bringing a siezed engine car back to life is what got me into this, and it's what prompted many of the threads I've archived or added to the FAQ or even written myself.
Welcome to the club, have fun with your project. Don't be afraid to ask questions, but try to make sure you've covered the basics (checking the FAQ, Archive, Search) first. If you've done that, it makes people way more willing to help you out because it shows that you're taking initiative. Not only that, but if you've done a bit of looking around first it can often help to make your question more specific - "I found this and that, but it's not exactly what I'm looking for - I'm wondering this"
Good luck, have fun.
Jon
I would start by picking up a Heynes manual, they're pretty well done for our cars. Head to the FAQ and you'll find a link where you can download the FSM (Factory Shop Manual) for our cars, they're pretty helpful as well though I sometimes find the Heynes more detailed in places.
As for identifying the motor, pictures are the best way. We've got some people on here who are absolute masters at identifying random motors that aren't sitting in their original chassis if yours has had an engine swap. If it hasn't had an engine swap, then the only first gens with 13b engines were the 84-85 GSL-SE. Other than that they're 12a (big give-away for that one is the blue airbox for the carb)
Also, some good info on engine building can be had if you search for a thread by a guy named Aaron Cake where he did his engine build. He's got awesome pictures of the step by step process, though he does gloss over the measuring and clearancing of the seals and putting them on the rotor, but it's understandable since at that point in the process you've got assembly lube and/or vaseline all over your hands - not very conducive to picture taking.
www.rotaryengineillustrated.com is a good site, though its MUCH more confusing to navigate than it used to be.
There's an okay article on howstuffworks.com about the rotary engine. I give it a 6/10 just because it's not completely inaccurate, but it constantly tries to compare to piston engines instead of just teaching from the ground up.
But really spend time with the FAQ. There's a wealth of great info there, in the archive and buried in past threads with the search function. Bringing a siezed engine car back to life is what got me into this, and it's what prompted many of the threads I've archived or added to the FAQ or even written myself.
Welcome to the club, have fun with your project. Don't be afraid to ask questions, but try to make sure you've covered the basics (checking the FAQ, Archive, Search) first. If you've done that, it makes people way more willing to help you out because it shows that you're taking initiative. Not only that, but if you've done a bit of looking around first it can often help to make your question more specific - "I found this and that, but it's not exactly what I'm looking for - I'm wondering this"
Good luck, have fun.
Jon
Thread
Thread Starter
Forum
Replies
Last Post
