I just read a thread about a guy who sold his ITR to some kid who blew it up on the drive home. I was just wondering what it takes to blow an ITR engine.

I've been driving for over twenty years, and EVERY car I've ever owned had a manual transmission. I've had my current ride (98 ITR with JRSC) for over two years. Recently I somehow missed 4th and downshifted into 2nd at 85mph (8k rpm?). I was sure that I had destroyed my engine, but it seems to be running fine. I couldn't believe it! After this I'll never own anything other than honda/acura. My question is, if this sort of abuse wouldn't blow an engine with over 70k hard miles (30k boosted) on it, then what does it take? Am I just unbelievably lucky? Anyone out there honest enough to admit that they have missed a shift and lived to tell about it?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fredtoast &raquo;</TD></TR><TR><TD CLASS="quote">What does it take to blow an ITR engine </TD></TR></TABLE>

Crower stuff

 

Nitrous

 

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


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

nawwwwwwws blows motors. nitrous doesnt

 

My R's motor survived a misshift from 3rd-&gt;2nd redlining. Took the car up to almost 11,000 RPM.

Everything is peechky keen.

 

Type R's are tough...

I bent all 8 exhaust valves in my GSR mis-shifting... 11k RPM on stock GSR internals is NOT a good thing.

Lots of RSX's are dying cause of mis-shifting too.

 

3rd to 2nd @ 90mph = 8 bent exh valves and a broken clutch.

 

when I first got my old PY ITR I missed shift 3rd to 2nd at redline (street racing ) busted alot of valves
had it rebuilt
then got sidswiped by a mustang and she was gone
made room for my FBP ITR

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Soup **** &raquo;</TD></TR><TR><TD CLASS="quote">nawwwwwwws blows motors. nitrous doesnt </TD></TR></TABLE>

You mean STUNNA's with NAAAAWS

 

If we were lucky, Honda would have discovered a way to make the motor self destruct the minute anything produced by APC was affixed to the car. Maybe that's something they can look into......

 

there should be an autolock mechanism so when the rpms get high enough it disconnect the clutch automatically from the driveshaft so there is not mechanical over rev. Let me patent that, be right back.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TypeR 01 886 &raquo;</TD></TR><TR><TD CLASS="quote">there should be an autolock mechanism so when the rpms get high enough it disconnect the clutch automatically from the driveshaft so there is not mechanical over rev. Let me patent that, be right back.</TD></TR></TABLE>

Then the revolutationary space-age clutch would blow and cost just about as much as a new motor

 

my friend misshifted twice in his type-r while racing at the track (he got too excited, did the infamous 3rd to 2nd, while smashing on the accelerator). the only damage that happened both times were bent vavles aand few busted vavle seals. i believe he got ridiculously lucky, and i can imagine that the rpms were greater than 11K. he then rebuilt head and it runs fine! it's just a tough motor, and i can only imagine that a combination of not taking care of the engine for a long time + misshifting and other reckless driving habits would lead to catastrpohic engine failure.

 

check your valves.. if they're ok, then you're ok and were probably lucky.. it mostly depends on how high it revved.. drive the crap out of it, misshift a lot, and don't regularly maintain it, and that motor will die in a hurry..

how has your JRSC been otherwise? what other mods do you have? any problems with the car at all since getting the blower on? I assume you're running the 5.5 PSI pully..?

 

i misshifted my old 94 gsr top of third to second and never had a problem, weird i know.

 

R's must be tough because my old LS survived (with no damage whatsoever) a 3rd to 2nd that spun the engine up to 11000. I pulled it apart afterwards and everything was peachy...along with that I also took it to the track and clicked off same old 1/4 mile times. If an LS can survive that then an R must be able to survive a lot.

 

One time in my R i did a burnout with the e-brake up(6 months ago) looked down at my rpm's and they were at ten grand and my car still runs like a champ

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mstewar &raquo;</TD></TR><TR><TD CLASS="quote">how has your JRSC been otherwise? what other mods do you have? any problems with the car at all since getting the blower on? I assume you're running the 5.5 PSI pully..?</TD></TR></TABLE>

I've had a MVM 8 psi stepper pulley for about the last 5k miles. I've never had any problems with the belts or anything. The only other mods are the jr BTC, MAP controller, and 255 l/hr high pressure fuel pump. It runs too rich, but there is no problem with detonation. I could get some more horses with tuning, but that will have to wait til Christmas. I drive the car hard, but not crazy. It's a daily driver logging 25-30K a year. Never done anything to it except new plugs and brake pads(and, of course, very regular oil change). I've owned all types of cars, but after this I'm a honda man. When I missed that shift it felt like I hit a wall. I was amazed that the whole engine didn't blow apart.

 

My stock ITR retainer broke, causing the valve to go thru the piston. I was shifting at 8500 and it didnt over rev at all. **** happens, even under normal driving conditions.
https://honda-tech.com/zerothread?id=470607

 

Nitrous - 1 bent valve
Nitrous - 1 new shortblock

Nitrous - Pinhead - bent 8 exhaust valves & 2 intake valves with 100 shot direct port

 

I must shift really slow or something . . . I just don't understand how you can hit 2nd when pulling straight down out of 3rd. Now, obviously you don't realize you're doing it when it happens, but I would think people would be a little more careful.

I could understand if it happened at the track, but not on public streets. I mean, honestly, what could you be doing on a public street that requires an extremely fast shift at 85+ mph?

 

Was sitting real close in my previous Integra in a street race and i went from 3rd to 2nd and must of went to 11k RPM... everything was cool. Althought I think the only true way to know without physically checking the valves is to get a leak down test...

 

8400 rpms 3rd gear -&gt; 2nd. poof, broken clutch (fixed under warranty ) and 4 exhaust valves bent. the funny thing was, the acura techs who fixed it under warranty witnessed it happen at the track

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Targa250R &raquo;</TD></TR><TR><TD CLASS="quote">what could you be doing on a public street that requires an extremely fast shift at 85+ mph? </TD></TR></TABLE>

Down shifted from 5th to 3rd at 65mph to pass a string of slow *** (65 in a 70 zone) traffic behind a tractor trailer that was clogging up the left hand lane of I-75. I'm sure the semi driver had a good laugh at my pathetic, failed fly by.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fredtoast &raquo;</TD></TR><TR><TD CLASS="quote">Down shifted from 5th to 3rd at 65mph to pass a string of slow *** (65 in a 70 zone) traffic behind a tractor trailer that was clogging up the left hand lane of I-75. I'm sure the semi driver had a good laugh at my pathetic, failed fly by. </TD></TR></TABLE>
You mean 5th to 2nd? Ouch