fastwanabe

Since I've decidid to keep the hatch I decided to yank the motor and find out why after my Florida trip I lost compresstion in #2. Is it possible that running lean could have caused this damage?






is this head salvagable?




this **** is fucked up. I have never seen this kinda damage from a stock motor. funny was motor still ran ok and didnt smoke.
#2





#3.... some funky **** going on with this one too. Look @ its 3:30 oclock position... see anything wierd?

what the **** is that?


#1


#4


I dont get it... this was a totally stock motor, sure I beat the pis outa it but still.

prelittlelude

where did this motor come from

this looks like the kind of damage you see on stock boosted h22 when they let go, ususally a ringlandding cranks and then all hell breaks lose, thats interesting, why did you ask about runing lean, what else is done to the car? any nitrous?

PirateMcFred

Detonation? Were you using the stock ecu or was it "chipped"?

Pirate

fastwanabe

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by prelittlelude &raquo;</TD></TR><TR><TD CLASS="quote">where did this motor come from

this looks like the kind of damage you see on stock boosted h22 when they let go, ususally a ringlandding cranks and then all hell breaks lose, thats interesting, why did you ask about runing lean, what else is done to the car? any nitrous?</TD></TR></TABLE>I ran 3000 miles on a unchipped p28.

FerioVtec94

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fastwanabe &raquo;</TD></TR><TR><TD CLASS="quote">I ran 3000 miles on a unchipped p28.</TD></TR></TABLE>

why? 1.6 sohc ecu on a dohc 2.2L?? am i missing something?

The Phil

p28 isnt 1.6 sohc ecu...i think its the h23 but im not sure

FerioVtec94

nope definitely a 92-95 civic ex ecu, probably the most common ecu that is used for chipping

The Phil

****...my bad

foumer

damn man that looks bad. It must of been the computer. I know you told me that you use the stock chip to save gas but this long trip you took might of done the trick. Sorry to see it happen to you, that car was fast.
Remember my boys blue hatch with the h22, he blew his motor a while back, skunk2 crappy cam gears got loose and broke two valves. Did a number on the head and cylinders.
If you have the money, I would resleeve the sucker and throw some forge pistons in there.
I am finally getting my stuff together with uberdata so if you want I could make you a chip.
Laters

Eddiebx

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fastwanabe &raquo;</TD></TR><TR><TD CLASS="quote">I ran 3000 miles on a unchipped p28.</TD></TR></TABLE>

thats probably why,

Adam.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by foumer &raquo;</TD></TR><TR><TD CLASS="quote">damn man that looks bad. It must of been the computer. I know you told me that you use the stock chip to save gas but this long trip you took might of done the trick. Sorry to see it happen to you, that car was fast.
Remember my boys blue hatch with the h22, he blew his motor a while back, skunk2 crappy cam gears got loose and broke two valves. Did a number on the head and cylinders.
If you have the money, I would resleeve the sucker and throw some forge pistons in there.
I am finally getting my stuff together with uberdata so if you want I could make you a chip.
Laters</TD></TR></TABLE>

I would just get an f22 block. I'm sure you can find and entire long block for less than $500. Check out what they are doing with them and h-series heads in the prelude forum. ******* cheap what to run new pistons and not have to resleeve.

Under_Pressure

Looks like detonation. You got alot of carbon bluid up it there. I belive=<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by prelittlelude &raquo;</TD></TR><TR><TD CLASS="quote">where did this motor come from

this looks like the kind of damage you see on stock boosted h22 when they let go, ususally a ringlandding cranks and then all hell breaks lose, thats interesting, why did you ask about runing lean, what else is done to the car? any nitrous?</TD></TR></TABLE>

B18C5-EH2

So basically it's either sleeve that block, or buy another block, right? Man that sucks bad bro.

I wish you luck on the fix. So there are F/H blocks that you can get that are borable/honable, right? You know, one without the fiber-reinforced or whatever cylinder walls?

v4lu3s

so now it can be shown to anyone else that wants to run a stock p28 why they SHOULDNT....

foumer

Yeah from what I know you can only go one size bigger on the pistons, but if that doesnt clear the scratches on the wall, it would need to get resleeved. I would do it anyways incase you want to make more horspower. My friend got a quote of 1000 dollars for the job including the sleeves.

projectegr

Sorry to hear this man, good luck with everything.

Running a chipped p28 is fine, but unchipped, yikes!!!


Modified by projectegr at 9:31 AM 1/20/2005

prelittlelude

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fastwanabe &raquo;</TD></TR><TR><TD CLASS="quote">I ran 3000 miles on a unchipped p28.</TD></TR></TABLE>

ahh! man you fucked your motor. your motor ran super lean all the time and that caused the rings and or the ring landings to fatigue and crack under load, what made you think you could run a unchiped civic ecu that powers a 1.6 litter engine on a 2.2 dohc vtec motor? not to mention that the stock civic ecu was runing thinking it had 240cc injectors.. wow did you ever get a check engine light?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C5-EH2 &raquo;</TD></TR><TR><TD CLASS="quote">So basically it's either sleeve that block, or buy another block, right? Man that sucks bad bro.

I wish you luck on the fix. So there are F/H blocks that you can get that are borable/honable, right? You know, one without the fiber-reinforced or whatever cylinder walls?</TD></TR></TABLE>

all f block have iroon sleeves, all h blocks have frm just like the f20c and the nsx blocks.

you can try and bore over .25 on this and then hope the scaratches arn't to deep, but make sure you follow the helms insturctions for boring and hoaning

v4lu3s

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by projectegr &raquo;</TD></TR><TR><TD CLASS="quote">I highly doubt the ecu caused this. The only thing the ecu caused was the engine to run lean.

In fact, I know three people around here who run chipped p28s on their h22s.

.</TD></TR></TABLE>

i thnk your bold lettering indicates exactly why many others dont see the same problems that this guy did.

i have thrown away multiple h22a pistons with cracked ringlands from a STOCK p13 ecu'd engine...vut the fuel out and you got even better chance of tearing it up.

live and learn!

duofilm

hmm.. I wonder if the p72 will do the same. Sure it runs like crap in the mid-range, but thats the only thing I got to work with. I just hope it's not too dangerously lean, considering p28's are 1.6 and p72's are 1.8

Jason kiDD

Okay lets not jump the gun here. The rest of the full story was that he was not using premium gas on his 3000+ mile journey.. Coupled with probably already weak ringlands helped with destroying the pistons.. Add the stock p28 on top and then you get a final picture..

My 2 cents..


Modified by Jason kiDD at 4:53 PM 1/20/2005


Modified by Jason kiDD at 4:54 PM 1/20/2005

v4lu3s

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by duofilm &raquo;</TD></TR><TR><TD CLASS="quote">hmm.. I wonder if the p72 will do the same. Sure it runs like crap in the mid-range, but thats the only thing I got to work with. I just hope it's not too dangerously lean, considering p28's are 1.6 and p72's are 1.8</TD></TR></TABLE>


yes its way too lean. I passed emissions in texas with a stock p72 on a stock h22a. The readouts were showed it was able to pass, but it was almost too lean, beaing near 15:1 a/f ratio, based on CO and it also had very high NOx readings too.

foumer

I have been wanting to get something straight. Lets say you have a p72 but not chipped on a h22 motor. Now even though the computer doesnt know that the h22 has 340cc injectors, would this cause a motor to run lean? Remember the computer still will open the injectors the same but since the 340cc injectors are bigger would flow more fuel than the 240's, wouldnt this be alright?

v4lu3s

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by foumer &raquo;</TD></TR><TR><TD CLASS="quote">I have been wanting to get something straight. Lets say you have a p72 but not chipped on a h22 motor. Now even though the computer doesnt know that the h22 has 340cc injectors, would this cause a motor to run lean? Remember the computer still will open the injectors the same but since the 340cc injectors are bigger would flow more fuel than the 240's, wouldnt this be alright? </TD></TR></TABLE>

as i just siad one post up...yes it is too lean.

fastwanabe

plans are as I mentioned on my other post.

sleeves
pistons
rods
cams
modded IM

if theres $ left over I'd like to get a used JS supercharger. sure it wont fit but c'mon I'm the master @ rigging **** up.

NXLude

You cant run civic computer on a h22 and expect it not to blow up. (Unless you do something to modify the maps) So that would be the results that I would expect.