dr_latino999

Some of you may have seen the dyno of my "300" hp D16A6 two weeks ago, ok, actually 113 but that is beyond the point, and went wow, what a strong motor! Well driving today to Best Buy down the Turnpike I am going rather spirited, shifting as so.

1st gear - Shift at 4000
2nd Gear - Shift at 7200 (right before rev limit)
3rd Gear - Shift at 7200 (right before rev limit)
4th Gear - Cruising at 5500

As I have now merged and am cruising through traffic between 80-90 all of a sudden the motor coughs, surges and starts misfiring violently. All hell has broken loose.

I try cranking it and with the throttle wide open, nothing is happening. Call for help and 30 minutes later my tools arrive.

1) Distributor - Rotor in place
2) Timing - Crank + Cam lined up
3) Battery - Charged
4) Fuel - Pressurized

We remove the intake and low and behold smoke and gas and all the nifty remnants of combustion come pouring out when the throttle body blade is opened. Not good. At this point we have checked for any oil dripping down as I think the motor has thrown a rod somehow. No holes, nothing. I try to move the motor to TDC with the spark plugs taken out.......um.........why won't it move?!??!? Next logical step is to remove the valve cover -- remember, this is all on the median of the turnpike at 2:00 this afternoon -- and wouldn't you know it, the intake valve closest to the timing belt on piston number one has bit the dust.

At TDC, it is all the way depressed...damn, but I have lucked at and am picking up a D16Z6 for $200 tomorrow



Modified by dr_latino999 at 1:53 PM 7/23/2005

dr_latino999

Ok, now here is my question as my brain is kicking up to fast to adequately keep track of - Did my spring go bad and not pull up the valve in time, or did something else occur that took out my poor child?

Tyson

you might want to check your bottom end before you make any further conclusions.

Ass$nyper

freaking blows that was a neat a6 but good snag with the z6

KFBhonda

dat sux.
i see no pics though.
better luck with the z6 for you i hope.

dr_latino999

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tyson &raquo;</TD></TR><TR><TD CLASS="quote">you might want to check your bottom end before you make any further conclusions. </TD></TR></TABLE> I for no reason think that a rod took a crap, as it we were able to start it (just once). What I am worried about is the cylinder wall, hence why I am purchasing a whole Z6 and not just the head.

LankorDie

Cruising at 5500? Why would you cruise at such a high RPM, I roll at like 1600 RPM.

Also what was your set up for your d16a6?

dr_latino999

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LankorDie &raquo;</TD></TR><TR><TD CLASS="quote">Cruising at 5500? Why would you cruise at such a high RPM, I roll at like 1600 RPM.

Also what was your set up for your d16a6? </TD></TR></TABLE> How the hell do you cruise at 1600 RPM?! 5th going 30? Anyways, I left it in 4th since it was a 5 mile trip, I felt like being playful, and I was giving a friend a ride just to show how it pulled. This is the setup in question - https://honda-tech.com/zerothread?id=1306548

importslife

you broke a valve off and now you have chunk of **** siting on the top of all your piston. I had the same **** happen to me geting on the x-way. The t/b jumped most likely. **** happens (sorry dog)

try to find a rover motor (edm) (d16a8/9) DOHC 1.6 137hp/108tq not a ZC. the rover motor i have didn't come in a honda, it was in a 93-96 rover 216gti-416gti

dr_latino999

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by importslife &raquo;</TD></TR><TR><TD CLASS="quote">you broke a valve off and now you have chunk of **** siting on the top of all your piston. I had the same **** happen to me geting on the x-way. The t/b jumped most likely. **** happens (sorry dog) </TD></TR></TABLE> When you say that, I can only pray that it is just sitting on top of the piston smiling, and it didn't decide to play ball with the wall. What do you mean the T/B jumped?

importslife

timmig belt

EP3_05

Pull the head. Most likely the dropped valve did more damage than you may realize. Sorry to hear about the loss.

91 crx savage

most likely the 3rd gear redline that did heim in

dr_latino999

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 91civic &raquo;</TD></TR><TR><TD CLASS="quote">Pull the head. Most likely the dropped valve did more damage than you may realize. Sorry to hear about the loss. </TD></TR></TABLE> STOP REMINDING ME, LOL. All that matters is that my ARP headstuds are still in good condition (which they are). The motor can sit until I have time to send it to a machine shop for some building.<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by importslife &raquo;</TD></TR><TR><TD CLASS="quote">timmig belt</TD></TR></TABLE> We moved that out of the question early on as the timing belt still had the marks on it that corresponded to the cam gear when we put the head back on two weeks ago.

Now back to the root of the problem, is it old springs that did this motor in or is it being redlined at 7200 too high at this age.

importslife

i have a d15b non v-tec and i have a bad rod bearing from hitting red line all the time. and when i say all the time i mean it i will hold it some times for 3-5 seconds i am wating for it to blow. but i do hit it just about every shift it will take it like a champ. cant kill the dam thing

importslife

thats what i was saying hole in piston (d16a6) now (d15b JDM) next rover (d16a8 EDM) i say old springs

Dancing is Forbidden

Redline is not the issue here, it is a preexisting condition obviously. I have bounced several of my engines at redline for entire traffic lights and they never seemed to have any problem staying together.

LankorDie

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dr_latino999 &raquo;</TD></TR><TR><TD CLASS="quote"> How the hell do you cruise at 1600 RPM?! 5th going 30? Anyways, I left it in 4th since it was a 5 mile trip, I felt like being playful, and I was giving a friend a ride just to show how it pulled. This is the setup in question - https://honda-tech.com/zerothread?id=1306548</TD></TR></TABLE>
Yep I try to keep the lowest rpm possable to save on gas, and engine wear.

Sorry about your loss, it sounded like a nice set up. At lest d16a6's are a dime a dozen, if you feel like rebuilding the beast.

trrbl1bmx

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ih8jdm &raquo;</TD></TR><TR><TD CLASS="quote">Redline is not the issue here, it is a preexisting condition obviously. I have bounced several of my engines at redline for entire traffic lights and they never seemed to have any problem staying together.</TD></TR></TABLE>

only brady!

Dancing is Forbidden

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ilovemyef9 &raquo;</TD></TR><TR><TD CLASS="quote">

only brady!</TD></TR></TABLE>Its swap day. FINALLY. Check PM.

65stang90crx

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by importslife &raquo;</TD></TR><TR><TD CLASS="quote">i have a d15b non v-tec.....cant kill the dam thing </TD></TR></TABLE>
I'm have the same engine man those things are bulletproof!! You cant kill them even trying, they just smile and keep turning over. It's crazy!!

dr_latino999

And the verdict is in, total destruction in cylinder four, mild to none in number one. The valve head sitting on one is from number four, we just moved it to look at the rod In 15 minutes though I will leave to pick up my Z6.

Hamstr323

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dr_latino999 &raquo;</TD></TR><TR><TD CLASS="quote">And the verdict is in, total destruction in cylinder four, mild to none in number one. The valve head sitting on one is from number four, we just moved it to look at the rod In 15 minutes though I will leave to pick up my Z6.
</TD></TR></TABLE>
I love blown motors

gnar kill

not trying to changer the subject or anything but isn't the redline on the a6 a little lower than 7200?.....i thought it was like 6800 and the z6 was 7200.......

M15

Hey man hope my you enjoy my Z6.