This is why not to run ITR cams on b16 valve train
 

This is not mine, its my friends week old b16 swap.
mods were
-AEBS intake manifod
-ITR cams
-JDMSHIT vision chipped p28
-Hondata intake gasket
http://www.we-todd-did-racing.com/we...MXk1NDE%3D.jpg
http://www.we-todd-did-racing.com/we...MXk1NDE%3D.jpg
http://www.we-todd-did-racing.com/we...MXk1NDE%3D.jpg
http://www.we-todd-did-racing.com/we...MXk1NDE%3D.jpg
http://www.we-todd-did-racing.com/we...MXk1NDE%3D.jpg
http://www.we-todd-did-racing.com/we...MXk1NDE%3D.jpg
http://www.we-todd-did-racing.com/we...MXk1NDE%3D.jpg

Re: This is why not to run ITR cams on b16 valve train (civic dx)
 

That sucks man. Thanks though as I was about to run my ctr cam with b16 valvesprings. I was only gonna use the stock rev limit even though everyone says it is safe I would rather wait and do it right the first time. https://honda-tech.com/forums/images/smilies/emthup.gif

Re: This is why not to run ITR cams on b16 valve train (Twenty36_1)
 

i think this happend around 8k

i dont think it was the cams, it was the driver i have put many itr and ctr cams in stock b16 and gsr heads with no problem and with stock rev limit and too this day still running, i think it was your friends shift point or a mis shift..

There is no problem with running itr cams on a stock b16 valve train if you keep the stock rev limit. Something weird happened there though...What was his rev limit?

Re: (Waachback)
 

That was my motor and i never did shift into 4th gear i was almost at 8 grand in third gear and it just let out a booom. But it was an first gen b16 with single sring valve springs in there.

Re: (Waachback)
 

rev limit was at 8,500 unless his chip was fucked up. i think he was shifting it at 8k though. it blew in the top of third gear, around 8k.

, keep in mind that first gen b16's are weaker than 2nd gen's, which are most of the motors these people are talking about...if you guys for some reason need any help let me know, if you need a ride the ef has yo back,good luck man

Re: (grenthang)
 

what do you mean single spring all stock b-series have dual intake and single ext, back in the day i would take my ctr cams stock b16 head too 8,500 all day long,

haha i just saw his sig

Re: This is why not to run ITR cams on b16 valve train (civic dx)
 

definitely something wrong besides the cams. ive had ITR cams in 2 seperate heads. one a GSR w/stock springs, the other a B16 w/stock springs. both at one point or another ran a ITR ECU w/8600redline and i used it religiously. needless to say both motors/heads survived. u had other issues im sure.
so to further this, dont post misleading info regarding ITR cams cause they are a great cam for a beginner and should have no problems w/stock B16/GSR valvetrain.

Re: This is why not to run ITR cams on b16 valve train (1 2 NV)
 

I wouldn't bet my motor on it https://honda-tech.com/forums/images...s/emsmilep.gif

Reving higher is NOT the only reason to upgrade your valvesprings. Higher lift cams will cause weaker springs to coil bind, regardless of rev limit.

Re: This is why not to run ITR cams on b16 valve train (StyleTEG)
 

Nothing wrong with the ITR cams. Just looks like you (your friend) floated the valves as the old B16 springs were old and couldn't keep up with the valves opening & closing fast enough. Therefore the value dropped into the piston and the pics explain the rest of the story. Sucks, but the only way to have prevented that would have been to upgrade the valve springs but there wouldn't have really been any easy way to tell that your valve train would give out in a short period of time.

Re: This is why not to run ITR cams on b16 valve train (Newman)
 

Yeah thats what i was thinking the valve springs where just to old and decide to drop the valve but i love the itr cams and there going in my next b16 build.

Re: This is why not to run ITR cams on b16 valve train (civic dx)
 

oh man, im sorry dude...pictures worth million words..

Re: This is why not to run ITR cams on b16 valve train (civic dx)
 

Holy chit!

Re: This is why not to run ITR cams on b16 valve train (civic dx)
 

I was runing ITR cams on my B16 head (stock) for 18 months with rew limit on 9200 rpm - it was o.k. http://images.honda-tech.com/set1//smile/emcrook.gif

Re: This is why not to run ITR cams on b16 valve train (civic dx)
 

damn...that sucks.

i seriously doubt it was because of the cam though. it was either because the valve springs were just too old or maybe over reving. i read about tons of people putting the ITR/CTR cams in a stock b16 or gsr head with no problems with the stock valve train. they even go a little higher on the revlimit with no problems.

i plan on getting a CTR intake cam for my motor soon....i think.

just get a jdm b16 longblock from hmotorsonline.

dang....

Re: This is why not to run ITR cams on b16 valve train (civic dx)
 

running ctr cams with no probs, even with mis-shifts to 9,000+ rpms https://honda-tech.com/forums/images/smilies/emsad.gif.
The first gen b16a was probably tired. Just like with all engines it gets worned and it will break. Think of the abuse it had before it got into your hands, it is a used engine with unknown mileage and it 13+ years old...a related issue, tired valve springs=valve float=smacked piston. Or valve adjustment error (it happens).
sorry about your engine goodluck on your second one.

I don't think it was springs fault but more retainers. I already same issue on FULL stock first B16A engine.
first and second B16A have same valve springs but have different retainers ! second gen B16A have same retainers as ITR/CTR

Re: (HRED)
 

I have used 01 ITR cams on my stock valvetrain 1st gen B16 for over a year, shifting at 8400, and an ocassional 9K with my other ECU, no problems here

Yeah that should'nt come apart like that at 8k. A friends first gen B16 saw 9k plus a few times with ctr cams and pistons.

Re: This is why not to run ITR cams on b16 valve train (gregor)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gregor &raquo;</TD></TR><TR><TD CLASS="quote">I was runing ITR cams on my B16 head (stock) for 18 months with rew limit on 9200 rpm - it was o.k. http://images.honda-tech.com/set1//smile/emcrook.gif </TD></TR></TABLE>

That is pretty stupid http://images.honda-tech.com/set1//smile/emcrook.gif

Re: This is why not to run ITR cams on b16 valve train (civic dx)
 

Funny, I ran CTR cams (which is the same thing as USDM ITR cams) for over 50,000 miles about 4 years ago. This was in a 1st gen B16a. I think the motor itself had over 60k when I purchased it.

AGAIN PEOPLE, DON'T REV THE MOTOR PASS ITS LIMIT, I.E. 8K RPM OR HIGHER

Re: This is why not to run ITR cams on b16 valve train (BERT-O)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BERT-O &raquo;</TD></TR><TR><TD CLASS="quote">AGAIN PEOPLE, DON'T REV THE MOTOR PASS ITS LIMIT, I.E. 8K RPM OR HIGHER</TD></TR></TABLE>

Exactly!

How did the timing belt look on the motor when it was taken apart?

i can bet a bill that it was an auto b16 with single valvesprings on both the intake and exhaust. the auto ecu's have a rev-limiter of about 7600rpm. it has happened many times before. single springs+8k=SUCKAAAAAAA!

Re: (B16C1)
 

i dont blame anything on the cam i loved the cam i just think something was two old and couldnt take it

Re: (grenthang)
 

if you dont blame the cam "LOOK" at your post.....
This is why not to run ITR cams on b16 valve train

Re: (grenthang)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by grenthang &raquo;</TD></TR><TR><TD CLASS="quote"> But it was an first gen b16 with single sring valve springs in there.</TD></TR></TABLE>

There was your problem, the single valve spring was not enough.

Re: (WAFFLES)
 

I didnt no my friend was going to post it up like that.

Re: (93lsd)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93lsd &raquo;</TD></TR><TR><TD CLASS="quote">i dont think it was the cams, it was the driver i have put many itr and ctr cams in stock b16 and gsr heads with no problem and with stock rev limit and too this day still running, i think it was your friends shift point or a mis shift..</TD></TR></TABLE>

Same here, I dont think it was the cams. It looks like he over reved or overheated the motor over a long period of time!

Re: (B16C1)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B16C1 &raquo;</TD></TR><TR><TD CLASS="quote">i can bet a bill that it was an auto b16 with single valvesprings on both the intake and exhaust. the auto ecu's have a rev-limiter of about 7600rpm. it has happened many times before. single springs+8k=SUCKAAAAAAA!</TD></TR></TABLE>


You know what, you got a good point. I did forget about those B16a automatics with weaker valvetrain. Alot of engine depot swap them over with 5-spd trannies https://honda-tech.com/forums/images...s/emthdown.gif https://honda-tech.com/forums/images...s/emthdown.gif

Re: (BERT-O)
 

I was also thinking i should have replaced the lma's.

good thing i read this first, i have read of alot of shops swapping out the automatic motors for the manual ones...not to bogart the thread but does anyone know how to read the block/head and be able to tell if its an auto b16 or not? or do i have to take the valve cover off and see?

i dont haev any problems with mine.

Re: (91sihatchback)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 91sihatchback &raquo;</TD></TR><TR><TD CLASS="quote">good thing i read this first, i have read of alot of shops swapping out the automatic motors for the manual ones...not to bogart the thread but does anyone know how to read the block/head and be able to tell if its an auto b16 or not? or do i have to take the valve cover off and see?</TD></TR></TABLE>

i was wondering the same thing

Re: (soon2brb240)
 

I just got my '99 ITR Valvetrain in today. Used, 15k miles, Dual Valvesprings and Retainers. I REFUSE to install them until I can get a CTR ECU, new headgasket... possibly an OEM with a layer shaved..., new valve guides and seals, Timing Belt kit, and ARP Headbolts... not to mention P&P, 3 angle Valvejob, and 0.005 mill, to even things up. As soon as it's together... straight to Idaho Speed Center for tuning! I believe that it's better to get it done right the first time. I'm not rich, and need to save for this... but it's alot cheaper than the blown engine you have. There's no way I could deal with that kind of problem on the daily driver that picks up my kid. Granted... shit happens no matter what, yadda, yadda... but at least with my head build, I want to try to eliminate all possibilities! Good luck with the rebuild... I hope everything works ok for you! It sucks to have to deal with that kind of a situation... and I wish I could help!!! https://honda-tech.com/forums/images/smilies/emthup.gif

Re: This is why not to run ITR cams on b16 valve train (civic dx)
 

no that is why you dont over rev your motor, or mis a gear at 9k. not why you dont run type r cams in a b16.

Re: This is why not to run ITR cams on b16 valve train (1993sir05)
 

I never did mis a gear or over rev it. The motor just droped a valve basically