im not sure what happened i had this in a 93 civic just 95 2.3 block with crower rods and 2.2. pistons...the head was milled 40 had crower spring and retainer and ported and polished running 280 prelude injectors everything semmed to work fine...i was testing it out ran it on the street 2 times all is ok right...next day on my way to the muffler shop i gunned it and at 7500 rpms just before i shifted like it just lost all this power and i poped the hood started the car a little knocking and alot of air coming out of the hole on the side of the valve cover.....dumb *** me i drove it to the shop and on the way there just alot of hard knocking pulled over and alot of screeching and there she died......pulled head off head was fine and one piston scrached the shXt out of the block... i have a h22a4 sitting there any suggestions please help...is it possible to put h23 crank and rod inside h22 and what pistons would i use .......thanks in advace...... im so bummed...................... it pulled soooooo hard

 

280 injectors might be a little small for 7500 rpm's
on an h23 vtec. hard to really say that was the cause though

 

what ecu were you using

sounds like you spun a bearing...

what hole where on what side of the valve cover?

 

280cc that's the saturated injectors and IF you're runing that with a p13 obd1 ecu..then you be runing lean...you built a h23vtec and you're runing 280cc saturated injectors? hmm....

 

maybe also you shouldn't have spun the crank to 7500...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Sam1am26 &raquo;</TD></TR><TR><TD CLASS="quote">maybe also you shouldn't have spun the crank to 7500...</TD></TR></TABLE>

Thats not too high. At least he isnt like most people that rev tose things to 85 and think its cool

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 95 lude &raquo;</TD></TR><TR><TD CLASS="quote">Thats not too high. At least he isnt like most people that rev tose things to 85 and think its cool</TD></TR></TABLE>
oh yeah i agree, but it still isnt smart to rev a crank that high if it wasnt designed for it... I just don't want to take an chances...

 

spun.bearing.

 

The H23 crank will not fit in your H22A4 block most likely. It will require getting larger bearings, if they make them at all.

 

a h22 chipped p28...... i guess at the left side of the valve cover towars the back it has that little tube.......so no h23 crank inside h22

 

the main journals on the h22a4 are 55 mm instead of 50(correct me if im wrong) mm like on the h22a1, so you would need h22a4 bearings that will fit those journals, i think...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eduardo &raquo;</TD></TR><TR><TD CLASS="quote">a h22 chipped p28...... i guess at the left side of the valve cover towars the back it has that little tube.......so no h23 crank inside h22 </TD></TR></TABLE>

the only way the h23 crank will fit in a h22a4 block is if the a4 block is out of a 97, the 97 had 50mm crank journals , and the 98+ have 55mm.

you spun a bearing, and you crank is probably junk, the reason the cyclinder wall is all scraped up is becasue ususally the cyclinder closest to he spun bearing gets throw all out of wack because the crank is moving all over the place, and that causes the piston to score the crap out of the cyclinder wall.

anyway, keep us updated, and we want pics of the tear down.

 

so you didn't refresh the bearings when you built the motor?

Did you remove the oil control plug to get more oil to the head? How much oil was in it?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by satan_srv &raquo;</TD></TR><TR><TD CLASS="quote">so you didn't refresh the bearings when you built the motor?

Did you remove the oil control plug to get more oil to the head? How much oil was in it?</TD></TR></TABLE>
joel when you destroyed you h23 vtec, did it score the cylinder closest to the spun bearing?

 

the bearings were not new and yes we removed the oil control and to tell you the truth the oil was about a quart shy it only had 4 quarts and i did not have oil squirters......what should i doo........ so the 2.3 crank and rods not possible inside the 2001 h22a4 ehhh

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by prelittlelude &raquo;</TD></TR><TR><TD CLASS="quote">
joel when you destroyed you h23 vtec, did it score the cylinder closest to the spun bearing?</TD></TR></TABLE>

no my cylinders were fine =&gt; Darton sleeves

 

my built motor went up to 8600rpm on many occasions...

 

i take mine at the most to 8k. not on many occasions but when i push it, she goes. actually just last week against an a4! i also run the jdm injectors and RC flowed to 358cc max on two of the injectors. 280? lil low i believe. no oil jets here either. can't remember the exact mileage but i believe i built at 150k, now im at 172k. 22k on mine if thats correct. still kickin

hope you didn't ruin the rotating masses. only takes one micro spec of poop to ruin. i'd look at that before you make plans for anything else. especially since your pistones were itching the walls a bit there

 

Did you grind the rockers so they cleared the retianers?

If not, then that is prolly why it went.

You'll see scratch marks on the surviving retainers. . .

 

So you ran an UNBALANCED H23 bottom end to 7500 RPM w/ a quart low of oil and old bearings?

Hmmmm, I have NO CLUE why it blew! Yes, you spun a bearing. The crank is gone. Either swap in the H22a4 or buy a new H23/F22 crank and bearings.

 

yea we did grind the rockers and i already got some type s pistons that im going to put into this h22a4 i have here i milled the head 40 so ill have good compression..... ill have it running by saturday. any other suggestions to help me out

 

Use more oil? New Bearings? Balance rotating assembly? These are good suggestions.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by satan_srv &raquo;</TD></TR><TR><TD CLASS="quote">Did you remove the oil control plug to get more oil to the head?</TD></TR></TABLE>

sorry for the stupid question, but what is the oil control plug, what's its function, and where is it?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by iakona &raquo;</TD></TR><TR><TD CLASS="quote">sorry for the stupid question, but what is the oil control plug, what's its function, and where is it?</TD></TR></TABLE>

H22 already has this plug removed to allow more oil flow for VTEC but an H23 has a plug in this orifice which is located at the top rear of the block between cylinders number 2 and 3. If you build an H23 VTEC you have to remove this plug...

 

Would removing that plug on a normal H23a non-Vtec help out at all. B/C I heard that H23a have poor oil circulation in the block. Too bad I didn't hear this before I spun a bearing.