Well since I'm not getting too much on my tech posts, maybe this will interest you guys more. Here's my stock motor, I'm going to miss it. 230k miles and looks like it was killed by a seized wrist pin on cylinder #1. I know I was out of focus, don't tell me. The outside of the block pics are the holes you can stick your finger through, the piston top and the head are to show where the piston hit the valves. I actually was looking at it again today and I don't think they are bent, just took a little carbon off!

 

wow..

looks like maybe one of those valves needs replacing unless its just the pics..


when did it happen,? you were just driving normal then "BOOM" ..?

 

Yes, if by normal you mean bouncing off the limiter in an autocross :wink:

I rebuilt that motor last summer and I've been beating the crap out of it. I babied it for like 1500 miles, I remember exactly where I was when I first really opened it up, and I'm pretty sure it bounced off the limiter every day after that...
Well, not quite, but this happened during an autocross, where I was winning (still took 3rd, beat a Ferrari). I was pretty low on fuel, and I think it leaned out or something when I went around a corner and there wasn't fuel in the pickup. The run before I had felt it do that when I went through a quick lane change and then accelerated hard, it just lagged a lot. The next time I was in an off-camber rotary at near redline in first and it just started making weird noises. I finished the run (my second best of the day, and also the very last one for my class) and it sort of sputtered and sounded like it had dropped a valve. I tore it all down and checked everything I could think of. The head was fine and the rod bearings were fine too. I got it back together after some headaches, and two weeks after it started making the noise I let it warm up, sounded ok, there was a little tick like the valves were out of wack, nothing unusual. I took it around the parking lot and got to about 3000 RPM and it just blew up, there was a lot of noise, a lot of vibration, and the oil light came on...
then I drove the HF to Rhode Island and picked up another motor... which is giving me so much crap going in... must not drive it too hard......

Anyway other than driving it pretty aggressively, I don't know what I did wrong. I know everyone that knows me says I drive it too hard, I never over-revved it, and it was pretty old to begin with (230k). I don't have any problems with taking the motor to it's redline/limiter on a regular basis. I've seen more engines break from bump starting. Honda designed the A6 with a fuel cut at 7200 RPM, why not 7000 if that's unsafe?
Now someone tell me I'm wrong.

 

They can take alot of abuse, i mean the d16a6 WAS supposedly the best D series block ever made from the factory cause of a supposed iron main bearing assembly compared to all the other d series blocks having aluminum bearing assembly but i can't confirm this. Anyways like you said it probally swisshed the gas too the side from a hard corner and fudged it, but i blew a d15b2 stock with 200k somethin a while back in my old crx "89dx" and it blew right AT 3000 somethin rpm too, lot of clacking and.........toast yeah it's dead...lol.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by downest &raquo;</TD></TR><TR><TD CLASS="quote">I rebuilt that motor last summer and I've been beating the crap out of it.</TD></TR></TABLE>


wow, that oil and sludge looks really dirty for only having one year on the rebuild.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Contender25 &raquo;</TD></TR><TR><TD CLASS="quote">They can take alot of abuse, i mean the d16a6 WAS supposedly the best D series block ever made from the factory </TD></TR></TABLE>

the 88/89 d16a6 came with steel main caps ..

sometimes **** just happens downest....its almost looks like that one cylinder had detonation,,causing the rod to snap like that

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by STREETWERKZ &raquo;</TD></TR><TR><TD CLASS="quote">wow, that oil and sludge looks really dirty for only having one year on the rebuild. </TD></TR></TABLE>

That's what someone else said to me. The block has been sitting open like that in the shop for over 2 weeks, it's not all stuff from the motor. Someone was sanding bondo directly over it too, there's a lot of dust and other stuff in there. It was a lot cleaner when I took it apart last summer, and yes I do change the oil at least every 3000 miles, I can remember changing it like 5 or 6 times actually since then, not counting directly after I had it out. I didn't ever have it completely cleaned by a shop either, I didn't even get the block out of the car. Yeah I know that's not the best way to do it but it was one of the first things I did on my CRX, or any car for that matter.
#1 replace alternator
#2 resolder main relay
#3 rebuild motor

so I was young and stupid But it ran perfectly until it blew up.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr.speaker &raquo;</TD></TR><TR><TD CLASS="quote">the 88/89 d16a6 came with steel main caps ..

sometimes **** just happens downest....its almost looks like that one cylinder had detonation,,and it the stock d-series rods arent the strongest....</TD></TR></TABLE>

Yeah... I'm using PM7s in the new motor, this thing should haul *** for a D series. I'm planning on getting a cleaner CRX over the summer with a motor in it, and this new one is getting a lot done, I have a friend at a motor shop who's giving me some deals and trades, I want a bulletproof D, but I'm not looking for like 200hp, I know it's not gonna happen and I want to stay NA, which means it would be unstreetable.

 

Yeah does look pretty shitty in there, but i have a 89 si hatch but it has a differen't beater D series in it ATM, the guy "friend" i got it from that put it in temporarily to drive said when he bought it from some old guy and drove it back home the number one cylinder fried and it overheated bad. Well long story short it seems alot of people do NOT know how to take care of them great d16a6 that are growin scarce these days, oh well im blabbin too much.

 

That little story above is what happened to the d16a6 in the 89 si i have, forgot to mention that.

 

Damn dude nice work.

 

"Well, not quite, but this happened during an autocross, where I was winning (still took 3rd, beat a Ferrari)"

Which group was this Autocross with where a CRX was going up against a Ferrari?

 

That engine looks terrible. Look at all that buildup.

When you say you "rebuilt" the engine, what did you actually do? Because I've never seen a rebuilt engine look like that after just a few months.

 

At my school we have an informal classing, we have 3 classes based on both car and driver skill since we know pretty much everyone. It ends up being 10 cars per class or so, the classes are GT, A, B. We have a good variety of people, from stock 4 doors to swapped and built cars, but the way we have it it's pretty even I think... the EFs always come out on top no matter what
It was a 1975 Ferrari 308... rsca crx rode in it.

 

Read what I wrote dude, it's not all from inside the motor. That thing's been sitting under a bench for a few weeks in the shop, it's filthy.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by downest &raquo;</TD></TR><TR><TD CLASS="quote">Read what I wrote dude, it's not all from inside the motor. That thing's been sitting under a bench for a few weeks in the shop, it's filthy. </TD></TR></TABLE>

That's not bondo dust. That's oil sludge from prolonged abuse and infrequent oil changes. lol.

Do you really believe all that buildup is from the engine sitting for a few weeks in a shop? haha.

 

I know how often I change my oil, and unlike you, I've seen the thing in person. I didn't clean the bottom end completely when I rebuilt it last summer, I didn't have a garage and the block stayed in the car. I know it's dirty from being in there, you can feel a gritty layer of **** all over it. I'll take some better pics for you when I get back to NY, if you insist I don't know what I'm doing.

Why don't you google for CRX engine rebuild and see who's article comes up first? And then I can forward you all the thank you emails I get all the time from kids who find that and use it.

 

Did I ever say that you don't know what you are doing? No dipshit, I said that engine looks like ******* and I asked you what you did when you "rebuilt" it.

So, what did you do when you "rebuilt" it? I'm just wondering. No need to get upset about it.

You don't have to take better pics for me, I couldn't care less. I was just making an observation.

 

Alright man sorry, I don't want this thread to go to ****. Just a little touchy, I've been without my car for over a month, and everyone here keeps busting my ***** either about when it's gonna be done or telling me it's going to blow up when I do finish it (high compression). I wrote an article for the resource when I did it, and if you google yes you will find it. Here it is. I definitely could have done a better job but I was basically working from the manual, it was the third thing I ever did with my CRX, after changing the alternator and resoldering the relay, I didn't know much about cars. I also didn't have the shop available and thus no lift or hoist, so I didn't get to pull the motor out.
The thing really is dirty as **** over in that corner, I have a pile of D motors over there, there's that one, a complete working waiting on parts A6, and an A1, and a couple of trannies... I kind of feel bad about it since it was my first motor from my first car, I don't know what to do with the thing.

 

Also wondering what exactly you did when you rebuilt it

 

RIP.

&lt;pours out a for the dead A6&gt;

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CRXBart &raquo;</TD></TR><TR><TD CLASS="quote">Damn dude nice work. </TD></TR></TABLE>

Lol. Nice hole in his engine?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by downest &raquo;</TD></TR><TR><TD CLASS="quote"> if you insist I don't know what I'm doing.</TD></TR></TABLE>

you took the head off recently, correct?


coincidence that it blew up afterwards?

 

Yes I took the head off to see if the valves had been hit or something when it was making noise. I don't see how that could have lead to the seized wrist pin...

 

i dont know either..... maybe that dusty shop you were working in?

 

I was really low on fuel at the autoX, and I heard a little detonation in the middle of an off camber rotary. I don't know if that had anything to do with it, but that's about when the sound started. It was clean when I pulled the head off.