In my last thread I mentioned that I bought my 7 with a blown motor(1.7 years back). Right after I bought it, with absolutely no knowledge of the rotary, I put in ATF then started the blown engine plenty of times. Later when I came across this site I read up and realized it was BLOWN (compression test). Since their were no builders in Bangladesh, I got my engine from a company called Zimax in Japan. Almost everything new. The new engine is running great till now.

It was only a couple of months back that I opened up that blown motor to see the inside. I got around to take some pictures yesterday. (I searched however couldn't find a picture of the 3 piece seals in this site, thought I'd share)This is a 1998 ORIGINAL motor. The apex seals as far as i can tell are 3 piece 2mm. This car before blowing had run on 90RON for almost 1.5 years with stock boost (the owner however had a very heavy foot). On his way back from a 600km drive he blew the engine. Boosting all the time. (the owners manual clearly states not to boost for more than half hour in one go). Please correct me if I'm wrong.

How bad do you guys think the detonation was?? Both the housing were scratched. I found all the broken pieces inside the housing. None went through the turbos. Only GOD knows how.

I'm attaching some pictures.

 

good info mate. got me scared for a second there with the heading

 

I've seen a LOT worse...that's a detonation break for sure, but higher mileage engines (75k+) do a lot more damage when they let go, because the entire seal breaks and flies around.

 

whats the matter now?

 

I'd say the detonation wasn't that severe. The seals chipped at their most fragile point. I've done much worse damage, you'll have to do better than that to keep up with me

 

Dev, I knew you'd say that mate. Still holding on.

 

RR since after the engine was blown, i started the car many times with ATF and at the same time revved it to 4000k (Yea I know stupid me). Is it possible for more apex seals to break or would doing that just scar my housing. (BTW both the housings were scratched). My english is bad. What I mean is say one or two apex seals broke, so with those broken ones inside the engine, then when i started the engine many times, is it possible that the other apex seals broke then, or would the broken pieces only scar the housing??

 

You know i'd try and compete if i had a builder in Bangladesh. BTW you shouldn't even try, I have RON 90 on my side.

On a more serious note, what are the reasons for these kind of detonations?

 

Nothing, just curious as to what might have caused that. Lower octane I can understand, are there any other reasons. Thats all.

Also If I buy a rebuild kit, two housings and rotors I am planning on rebuilding that engine. I know its a long way, I'll buy parts in phases. Give it a try since there is no one in Bangladesh who can build a rotary. Then I'll need all the help from you guys.

Imagine yourselves in my position (no engine builder, no parts, no oil filter, no spark plugs, NO NOTHING).That'll justify all my dumb questions. Even then I love my car and I'll keep it forever.

 

I think he didnt express himself correctly. His current engine is fine as far as I understand it. For now

 

I don't think you did any additional damage by starting the motor.

On one of my blown engines it was very subtle (I have blown a bunch so know the symptoms very well, lol) and I actually boosted it at one point all through 2nd gear to redline, and after determining that it was definitely blown my bud steve drove the car 150 miles to his place. After disassembling the engine I found one barely chipped seal, and the rest of the motor was fine. I dodged a bullet that time .

 

Cruiser, I know my english is bad, IT"S NOT THAT BAD!!

 

I think the previous owner of my car did the same thing. After blowing the engine he drove it around like that for sometime, if thats possible.

Some pictures of the housing and rotors.