RX7Club.com - Mazda RX7 Forum

RX7Club.com - Mazda RX7 Forum (https://www.rx7club.com/)
-   1st Generation Specific (1979-1985) (https://www.rx7club.com/1st-generation-specific-1979-1985-18/)
-   -   Apex Seal Go Bye Bye! (https://www.rx7club.com/1st-generation-specific-1979-1985-18/apex-seal-go-bye-bye-755498/)

Jeezus 05-18-08 10:59 AM

Didn't take many pictures. 215 disk on 225 fly:

http://i27.tinypic.com/1rexr7.jpg

Old engine:

http://i25.tinypic.com/2lnidmh.jpg

The resurfaced flywheel picture was a little fuzzy so I didn't bother loading that up.

Video is uploading

bad 83 05-21-08 04:49 PM

The engine is running pretty good, but I still have a little bit of a lumpy idle. I have noticed since the romp Sunday, that idle is starting to clear up somewhat. Maybe just getting some more miles on her will straighten her out :D.

http://www.youtube.com/watch?v=YP77J6a7FwY

yetterben 05-21-08 05:26 PM

Who let the Mr2 in and the honda elf!

ray green 05-21-08 06:18 PM

Sam, put your rats nest back in. That engine ran fine with a rats nest.

Stu, where's the movie?

bad 83 06-18-08 05:26 PM

Well, I apreciate the advice Ray, but I decided to really find out why that engine has such a lumpy idle. After tearing down that engine (and the 4 before that one), I found out that it had a corner seal pretty much welded to the rotor. So I thought I would at least have some good housings, boy was I wrong. So after tearing down 5 engines, I did at least get two good housing to work with. I am going to keep my portings a little secret right now, but as the assembly takes place, I'll let you guys in on what's in store for the SA. So enough of the blah blah blah........On with the pics.

bad 83 06-18-08 05:33 PM

Here's the carnage after tearing the engines down :D

http://img.photobucket.com/albums/v6...NewEngine5.jpg

http://img.photobucket.com/albums/v6...NewEngine6.jpg

http://img.photobucket.com/albums/v6...NewEngine7.jpg

http://img.photobucket.com/albums/v6...NewEngine9.jpg

http://img.photobucket.com/albums/v6...ewEngine10.jpg

bad 83 06-18-08 05:36 PM

Here's some teasers of what is to come!

http://img.photobucket.com/albums/v6...NewEngine1.jpg

http://img.photobucket.com/albums/v6...NewEngine3.jpg

http://img.photobucket.com/albums/v6...NewEngine2.jpg

http://img.photobucket.com/albums/v6...Newengine4.jpg

Jeezus 06-18-08 05:44 PM

Yes, it was another long day of cleaning out the rotors. Surprisingly enough, when we tore down the last engine that ran in the SA, that thing was CLEAN! I am a firm believer in seafoam, cause carbon was basically nonexistant on it. That engine was good, the rotor with the stuck corner seal... man. The corner seal was worn down, and the corner piece of the apex was almost nonexistant! The rotor looked very usable, but the bad corner side... worn down to oblivion.

Can't wait to get this engine up and running! We found a soft seal kit for $124 and it should be picked up soon. As for spec'ing everything, it was great and the hard seals were awesome. Little wear and no scratches :)

ray green 06-18-08 06:10 PM

Jeez Sam, I was wondering why we hadn't heard from you lately. Very impressive.

bad 83 06-18-08 08:42 PM

I am trying to keep the "new" engine for the SA on the down low. I have a few tricks up my sleeve for this one. It will stay NA. I just want to see what kind of power I can pull out of a NA without going with a P port. All I am going to say at this point is.............I'll let you know :D

Jeezus 06-18-08 09:25 PM

I cant get this grease off my hands... or my knee...

bad 83 06-18-08 10:03 PM


Originally Posted by Jeezus (Post 8297291)
I cant get this grease off my hands... or my knee...

That's when you know you did a good job :icon_tup:

yetterben 06-18-08 10:15 PM

Now that i know this is gonna be great :) "YOU CAN DO IT"

bad 83 06-19-08 08:58 PM

I picked up my gaskets/soft seal kit today. Should be getting the 3rd gen corner springs tomorrow. I can't wait to get the porting done on the housings this weekend. If everything goes well, I hope to have this thing back running by next weekend.

Jeezus 06-19-08 10:23 PM

I swear we have the fastest turn around time. First getting the blown engine out the SA and another one in, now engines all torn down and rebuilding to put another in.

My guy will be at mazda tomorrow, so I should be getting them in the AM. Man I cant wait for this thing to run!

Crit 06-19-08 11:51 PM

What are you guys doing for seals? Do you have enough hard seals between all the motors that you'll reuse them? Where did you go for soft seals?

And do you have any SE rotors in there?

Jeezus 06-20-08 01:56 AM


Originally Posted by Crit (Post 8301223)
What are you guys doing for seals? Do you have enough hard seals between all the motors that you'll reuse them? Where did you go for soft seals?

And do you have any SE rotors in there?

Yep. SE rotors, all C weights with matching counterweights. 225mm Flywheel with 215mm clutch AFAIK that we are using. The soft seal kit we got at a steal, about $130 total for it. All the other seals I got to spec out and find the best of the best. The seals we had are good for atleast 75k miles until they are worn down to "out of spec". I think the haynes manual and what I use for spec'ing are considered for engines that will last to 200k miles. With that said, what we are using will be about 100 to 120k miles until out of spec parts. Considering that most stock engines are beyond this (and still running strong!) we will be in the clear for a loooong time.


Oh and Sam, I didn't ask you this, but are you going in for a break in time? Since the soft seals are pretty much set-them-and-run-them, do you think that the hard seals would be worthy of break in? I would consider atleast 1.5k or 2k miles of 4.5k and less to be sure.

bad 83 06-20-08 08:20 AM

Break in? You know how I "break" them in :D

http://img.photobucket.com/albums/v6...GTOburnout.jpg

http://img.photobucket.com/albums/v6...hedriveway.jpg

Jeezus 06-20-08 06:11 PM

Oh yeah, how could I forget how you break things in. Good thing you showed me:

http://i30.tinypic.com/2dir4wj.jpg

http://i26.tinypic.com/2gse6ud.jpg

Jeezus 06-20-08 06:20 PM

Today's update. Sam got the gasket kit and we ordered some 3rd gen corner springs, should be in by Wednesday. Turns out the closest dealership who had them was in Tennessee, and they only had one. Yes, only one spring. Test drove an RX8 today. Not really oomphy but man it goes!

Some pictures. As usual, I always get to see an interesting car on the interstate:
http://i30.tinypic.com/fo3sqg.jpg

Rough picture of some exhaust ports. First one I stopped working on and the 2nd one (on the right) I got D shaped and matched to the sleeve. I think this is what style we will be using.

http://i29.tinypic.com/20tp2e1.jpg

Meanwhile, Sam got the seals pretty and clean:
http://i27.tinypic.com/15ppog6.jpg

Then I had to leave, felt bad all day and started dry heaving. eugeigieb :(

Next time I am up there Sam we can start on the housings we are going to use if you want. I will see if I can bring some other drill bits as well to clean it up.

bad 83 06-20-08 11:05 PM

Man.......We had a blast in the Turbo FB today! I thought that clown in the Civic was going to sh$t himself when we left at that light. I think we scared that Camaro that was sitting behind us too :D But niether wanted to play after that. Go figure? Glad you got a chance to go back and get some pics. I told you the old girl left some good ones!

yetterben 06-21-08 10:45 AM

*sigh* that clutch of yours sam um......well you know!

bad 83 06-21-08 11:15 AM

Yeah, I know........Kinda running short of funds right now. I still need to upgrade the clutch in the Turbo FB. Every once in a while after a hard pull from 1rst to 3rd, you can smell the clutch. If enyone has a nice clutch in my price range (free), I'll take it off thier hands :D

phalerider 06-21-08 01:00 PM

thx for takin the time to post this man. I picked up some good info

bad 83 06-23-08 12:20 PM

No, thank you. I am going to get pics of the reassembly when we start in a couple days. I have the front iron mounted to the engine stand waiting on the 3rd gen corner springs. The portings will become more clear once we get to assembly. I didn't want a 10 thousand rpm engine, so we are porting to make power between 2500 to 8500. The port selection will be good for some grunt out of the hole also. Will update with pics as soon as possible!


All times are GMT -5. The time now is 11:15 AM.


© 2024 MH Sub I, LLC dba Internet Brands