Message to the builder.” you cheap f*ck solid corner seals are only $60"bucks.


That’s a good way to keep customer satisfaction to its full potential

 

^^ +10000

OMG .. I was waiting for someone to post something like that!

 

All Early (OEM pre-'76)
(for 3mm apex seals)




All 76-85 3mm



Rubber Insert for above corner seal



All 86-95 2mm

 

i`ve heard of some builders leaving out the rubber inserts , for porting reasons
supposedly , its some port design that the corner seal passes barely over it , and the rubber piece , if left in there would fall through the port ......please dont ask me to explain ...this is what i`ve heard , not shure if its real or not , but that was wat i was told ....hhhmmm...kind of think of it that guys engine is torn appart now , i could try and go see it

 

I think you guys are missing the point.
on several levels....

1. the corner seal inserts are $22....not that much. if the builder is not telling people he is leaving them out, that is wrong.
2. the rotor was messed up PRIOR to being put in the engine. anyone who can read a micrometer, digital caliper, or whatever you weapon of choice is, should know that you cant use a rotor with a 1.93mm clearance. (apex seals are also about 1.93-1.955mm or so)
3. weather or not the builder put them in, the corner seals are there for a reason. if you dont use the inserts, why not just use solid seals?
4. any loss of compression is a bad thing. if it was 1psi, i would spend the WHOLE 22 dollars to get that extra 1psi.
5. the inserts help with chatter. i know that according to a mazda engine builder.
6. yes, you would not use inserts on a BP, or possibly even a large SP. BUT you would just use the solids, again.

 

The whole debate of this thread is that most here believe that the lack of plugs caused the engine to loose that much compression. The fact is it didn't. Yes these engines are very easy to assemble, however it is really easy to forget the little things sometimes. Not everyone's assembly process is the same. Some people completely assemble the rotors seals with ruber bands while others put the seals on as they build up the block. Hell I nearly on a couple occasions forgot to use the silicon on one of the rotor housing feet. I found that I personaly get easily destracted by people when assembling these things. So now I only do assembly with no one present. I can guarantee you any builder here has gotten distracted one way or another and forgot something.

 

I can't say how much compression suffered. Forgetting one or two plugs is a little thing in the sense that it's human error. But forgetting all twelve plugs is big thing and intentional. If nothing else, you should see them missing on the aft/trailing rotor sides as you assemble. Especially true if one is a "professional" builder. I think it's safe to conclude that these plugs were left out on purpose.

 

I wont argue that however, we all know that the plugs isn't the main reason the engine had poor compression. The real issuse should be about the poor assembly of the engine. Way to much attention has been focused on something that doesn't even have that much of an effect.

 

[QUOTE=t-von;8364468]The whole debate of this thread is that most here believe that the lack of plugs caused the engine to loose that much compression. The fact is it didn't. QUOTE]


okay then, you have deffinatley missed the point.
the point of the thread was NOT weather the corner seal inserts caused the lack of compression. i know that the lack of compression was caused by a stuck apex seal (if you would re-read my very first post, you would see that i clearly stated that fact)
the point of this "debate" was for me (and anyone else interested in learning) to see weather or not anyone else has found this problem.
ive learned what i wanted to know, and that was the point of this debate.
the debate as to the point, and nessecity of the corner seals just followed afterwards.
the fact of the matter is, if your using solid seals, fine. if your using stock style seals, they should have the insert. and if your not putting the insert in, you should be telling your clients.



the reason the attention was focused on the inserts was due to the fact that it was assembled improperly. if it has ANY effect, then it IS an effect.
we are all aware of the MAIN reason for poor compression in the front rotor. no one is arguing otherwise.
as far as i am concerned, everyone knows that the apex seal was the problem. no one else thinks the corner seals casued the really low compression. you are the only one that thinks that.
so, i think we are all in agreeance, just arguing the same point from different sides.

 

Maybe you need to re-read your own post to better understand the context to which it was taken. I knew from the beginning that you had a stuck seal. You yourself didn't make a big deal about. That's what I don't understand. You seemed more concerned about the lack of plugs. You did draw attention to that section of your post by using all CAPS did you not? All the replies there afterwards focused on the lack of plugs making any newbie that reads this thread think that it was the major issue of concern. That's why I chimed in with my reply. I don't know of your experience, but I do know how this forum works and how easy it is for newbies to get really confused about something that's not really that important.






You can't be serious? Did you not read my last post here:

 

okay, i agree with you on confusing the newbs.
the thing is, i knew about the stuck apex seal the second i heard the car turn over weeks before i even bought it. so, you are correct. i was the least bit surprised about the stuck apex seal. what surprised me was the corner seals, thats why i posted this in the first place. in all the engines ive seen, this is the first that were missing the inserts.
think of it like this:
if you were a crime scene investigator, a murder would be nothing new to you. to the general public, it would be a big concern.
however, if the victim had been killed with a (fill in the blank, hell, i dont know, a piece of bread) then you would be especially surprised.





yes, i did.
the attention was supposed to be focused on the corner seals, because that was the whole point of this thread.

 

Interesting thread. So can someone pm me with who is a good shop to get my engine rebuilt? Currently in Hawaii, thanks guys. And yes, I've been researching...this for the last two weeks...Robbie.