This may be a dumb question and I am pretty sure I know the answer, but I had to ask.

If your timing belt breaks, then you most likely will have valve and cylinder damage right?

What are the effects of a broken timing belt (assume at speed, on the highway for example).

I am asking in reference to a stock Type-R, no mods internally.

 

The most common result will be bent valves.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Reid &raquo;</TD></TR><TR><TD CLASS="quote">The most common result will be bent valves.</TD></TR></TABLE>

 

from my experience with timing belt snapping on the road while traveling 40-50mph will be not cause bent valves. The engine will automatically shut down on you ....what causes bent valves is when people come to a stop and keep cranking there engine whens the timings are all off....thats the cause of having bent valves.....correct me if im wrong...thats just my personal experience with 3 cars with snapping timing belt while driving and no bent valves....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CNSK &raquo;</TD></TR><TR><TD CLASS="quote">from my experience with timing belt snapping on the road while traveling 40-50mph will be not cause bent valves. The engine will automatically shut down on you </TD></TR></TABLE>

With the clutch out, your car's momentum will spin the motor enough to bend the valves.

Were your other cars interference motors? Manual transmission? In a non-interference motor, the valves won't hit the piston even if the cam timing is off (or the belt snaps). In an interference motor (like the ITR's), the valves have enough travel to get smacked pretty hard by the piston if they don't get out of the way in time.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Reid &raquo;</TD></TR><TR><TD CLASS="quote">The most common result will be bent valves.</TD></TR></TABLE>

What he said and it will looklike this

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CNSK &raquo;</TD></TR><TR><TD CLASS="quote">thats just my personal experience with 3 cars with snapping timing belt while driving and no bent valves....</TD></TR></TABLE>

Did you fail to replace the timing belt at the recommended service interval? (THREE TIMES???) Or was there some other cause?

 

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

Did you fail to replace the timing belt at the recommended service interval? (THREE TIMES???) Or was there some other cause?
</TD></TR></TABLE>

sorry...meant 3 times with 3 different cars...all manual transmission...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CNSK &raquo;</TD></TR><TR><TD CLASS="quote">sorry...meant 3 times with 3 different cars...all manual transmission...</TD></TR></TABLE>

Did all three cars have interference engines?

 

quick question dont wanna jack the thread (im still learning ) different between interference and non-interference engine???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by drifter_X &raquo;</TD></TR><TR><TD CLASS="quote">quick question dont wanna jack the thread (im still learning ) different between interference and non-interference engine???</TD></TR></TABLE>

In an interference motor, the piston's path will cross the valve's path, but not at the same time. So, a fully open valve has to close before the piston comes up and crushes it. That's why a timing belt failure is expensive in most of our motors, valves get bent to hell.

 

Seems like dumb design to me...

So what am I looking for when inspecting the timing belt?

 

[QUOTE=onyx00]Seems like dumb design to me...

QUOTE]

Yeah...whoever designed the B18 should be fired immediately....

 

It has nothing to do with the B18.

It has to do with motor design in general.

But hell, what do I know, I only design flight systems

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by onyx00 &raquo;</TD></TR><TR><TD CLASS="quote">It has nothing to do with the B18.

It has to do with motor design in general.

But hell, what do I know, I only design flight systems </TD></TR></TABLE>

High Lift cams + higher compression motors = hard to design a compact non-interference motor.

Would you rather have a 150hp 3.0 inline 6 just so you have a non-interference motor?

 

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

Would you rather have a 150hp 3.0 inline 6 just so you have a non-interference motor?</TD></TR></TABLE>

:shrugg: i'd rather have boost....

P.I.M.P &gt; *

 

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

:shrugg: i'd rather have boost....

P.I.M.P &gt; *</TD></TR></TABLE>

Well, obviously. But given the two options only..

b00st &gt; my 4.6l mod motor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dave-ROR &raquo;</TD></TR><TR><TD CLASS="quote">b00st &gt; my 4.6l mod motor</TD></TR></TABLE>

Que le faq?

 

oh I have a free beater.



any guesses?

 

Does it have the cop package?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Splat &raquo;</TD></TR><TR><TD CLASS="quote">Does it have the cop package? </TD></TR></TABLE>

Wrong car

 

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

Wrong car </TD></TR></TABLE>

Town Car instead of Crown Vic?

 

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

Town Car instead of Crown Vic?</TD></TR></TABLE>






white leather &gt; itr interior

 

Holy **** it's got a Landau top

You tracking that sled at We Todd Expo??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Splat &raquo;</TD></TR><TR><TD CLASS="quote">Holy **** it's got a Landau top

You tracking that sled at We Todd Expo??</TD></TR></TABLE>

Maybe. Tokico's will be ordered soon. Limo spec ones.. stiffer valving

It needs an LSD, drifting it sucks with open diff.