Question about 1985 Nissan 300ZX

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Just broke timing belt on my 300zx,does thi

Just broke timing belt on my 300zx,does thi eng.have a valve interference problem. or can i just replace the belt.
mike from auburn cal.

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If it was running they bent even if it was idling.replace or rebuild the heads is your only options

Posted on Jan 13, 2010

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Yes your engine is a interference engine,
which mean valve to piston hit.

But replace the timing belt.
Possible you didn't bent a valve.
Depend on the condition when the T/B broke,

Let me know.....

Posted on Sep 29, 2009

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1 Answer

Timeing belt broke have replaced now not fireing


You either have the belt 180 degrees off. So you have to take belt off and turn crank only (slowly) around once to its mark again, but first you need to go to a website that lists motors that are called "interference fit" engines. (Think Gates belt co. has a list) If your motor is an interference fit then when belt broke the motor is trashed. Interference fit means that pistons can hit valves if the belt breaks. That is why they tell you to replace the timing belt before too long. Also if motor is interference fit when you try and turn crank go slow because you may bump into valve.

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Timing belt broke while driving car what internal damage should i check for before trying to replace belt


I'd recommend doing a web (or dealer) search for your specific engine to see if it's an "interference" engine. An interference engine is one where the intake or exhaust valves could come in contact with the pistons if the timing belt were to break. If your engine is NOT an interference engine, you can start to swap out the timing belt with no worries. If it IS an interference engine, and the timing belt broke while you were driving, there could be a great deal of internal damage. It's hard to estimate what the damage could be... it could range from zero damage (unlikely), to broken valves and pistons. You could do a compression test on each cylinder before replacing the belt.

Good luck.

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My 1986 Nissan 300ZX will not get over 2000 rpm. I thought it might be a fuel problem so I was told to replace the mass air. Well that obviously didn't work so then I pulled the o2 sensors to see if the...


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Nov 13, 2010 | 1986 Nissan 300ZX

1 Answer

What is the time belt ? why is it important to monitor it especially in used cars?


if thi plymouth voyager as a 3.3l eng it does not have a timing belt it as a timing chain does not require any maintenace as all like the good ol days ..if it as a 3.0l eng then it as a rubber timing belt that control the valve timing that reqires replacing every 80 to 100, 000 miles make sure you know what engine this van as if its a 3,3l it wi say it on top of intake or 3.5l is the same they both have chain ...3.0l does have a timing BELT

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02 kia rio does it have an interferance eng? Think siezed eng may be a timing belt, but aren't sure.


yes it is interference and if belt broke some valves are bent.head removal required

Jun 09, 2010 | 2002 Kia Rio

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Timing belt is broken. Interference or non interference motor?


Most Ford vehicles from 1985 and up have enough valve clearence so the valves do not get hit when the timing belt snaps. Since I worked for ford for many years I have only seen one with valve damage and the youg man said he was driving his car really hard at high RPM's. I believe you will be okay on your engine as long as when the belt broke the engine was not at high rpm's. If know one has told you those engine recommend a timing belt replacement every 60k. I hpe this helped and I hope this fixes your problem. Good luck, Roger

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1 Answer

Timing belt broke


The Storm does NOT have an interference engine. If the belt broke, replace it and be on your way.

Jan 10, 2010 | 1990 Geo Storm

1 Answer

Timing belt broke on my 1992 Honda Accord LX


You just have to try it. The best thing to do is try adjusting the valves. The settings are under the hood. They valves should be pretty close to what the clearances should be. If any are WAY LOOSE you may have a bent valve. If they seem OK, replace the belt. Be sure to replace the balancer belt also.

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1 Answer

Honda died while on freeway


so you checked under the timing belt cover and found that your timing belt broke. you have an interference engine which means when the timing belt broke the pistons most likely hit against the valves which now means you most likely wil need valve/head replaced and t-belt replaced.

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1 Answer

1984 Nissan 300zx


the timing belt should be changed every 60,000 miles.
your engine is an interference engine, which means if the timing belt breaks or skips, the valves will hit the pistons.
if your belt broke you will have bent valves. so the heads will need to come off and bent valves replaced.

Aug 18, 2008 | 1992 Nissan 300ZX

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