Possible Valve Damage

[cameryfan92]

I just talked to a mechanic and he said that there could have been some valve damage when the timing belt broke. Is this true or even possible.

[Mike Gerber]

If it's the 4 cylinder 5SFE engine, then there should be no damage. It is a non-interference engine.

Mike

[cameryfan92]

The engne is a 2200, 2.2 l. 4 cyl.

[Toysrme]

No damage.

[jmd445]

What if it were a 2000 Camry V-6?

[Toysrme]

For v6's only the vvt-i 1mz-fe & 3mz-fe v6's are interference.

[GSS123]

Toysrme, what V-6 type is normal for a 1994 Camray?

[Brian R.]

Originally Posted by GSS123

Toysrme, what V-6 type is normal for a 1994 Camray?

non-vvt-i (standard cam) 1MZ-FE

I believe the vvt-i 1MZ-FE is only an interference engine when the engine is using the performance lobes. Under 4000 rpm (or whatever is the cut-in point), the engine is non-interference.

[GSS123]

Thanks Brain, So this type of V-6 engine could have valve damage if there was a timing belt failure? Right?

I better check my daughter mileage and see if replacement of timing belt is due?

[Brian R.]

Originally Posted by jmd445

What if it were a 2000 Camry V-6?

Edit: According to the Gates manual, all Camry V6 1998-present (both 1MZ-FE and 3MZ-FE) are interference engines.

http://www.gates.com/downloads/downl...older=brochure

[Brian R.]

Originally Posted by GSS123

Thanks Brain, So this type of V-6 engine could have valve damage if there was a timing belt failure? Right?

I better check my daughter mileage and see if replacement of timing belt is due?

No, the 1994 engine is non-interference - no worries

[Toysrme]

VVT = Varriable Valve Timing.
VVT-i, or VVT-I = Varriable Valve Timing with Intelligence
VVTL-I = Varriable Valve Timing & Left with Intelligence
The VVT portions are nothing more than a special cam sprocket that when oil pressure send from an oil pressure solenoid hits the sprocket - it advancess 15* of cam angle (30* in relation to the camshaft). It's either one way or another
VVT-I is the exact same thing, but the ECU can pulse the oil pressure solenoid on & off to control how far advanced it can go. (Anywhere between 0-30*)
VVTL is the newest system.
it retains the VVT-I cam timing portion, while also including an extra set of lobs w' a rocker that works exactly like vtec.


A VVT-I engine that is interfference is always interfference. (So a 1mz-fe VVT-i BEAMS is always interfference.)
They only have one set of lobes.

[Brian R.]

Ah, OK. Thanks for the clarification...



Is the VVTL engine non-interference, interference, or both?

[Toysrme]

Both so far.