Anybody Know the Toyota Part Numbers for the Cams?

[TrackAddict]

I need to replace both the intake and exhaust cams but the part numbers I have don't match what the Toyota dealer shows??

Here's where I found the part numbers:

Camshafts - Monkeywrench Racing - Celica - MR2 Spyder - Corolla - Lotus Performance Solutions

I need just the cams, not the rockers, so can anyone help me out here with the right numbers??

[turbophil]

Sorry I didn't get to your PM... You need both. There's a reason they're sold as a pair... When the cams wipe, as you indicated, they ruin the seat on the rockers... Sort of like replacing lifters on your chebby three fiddy (), you pair the lifters with the cam... In this case, you pair the cams with the rockers...

Take care,

Phil

[TrackAddict]

Originally Posted by turbophil

Sorry I didn't get to your PM... You need both. There's a reason they're sold as a pair... When the cams wipe, as you indicated, they ruin the seat on the rockers... Sort of like replacing lifters on your chebby three fiddy (), you pair the lifters with the cam... In this case, you pair the cams with the rockers...

Take care,

Phil

On the Monkeywrench website, they say you can change just the cams if the wear is light...my tech says that is the case on my car.

Is that not advisable??

[turbophil]

Originally Posted by TrackAddict

On the Monkeywrench website, they say you can change just the cams if the wear is light...my tech says that is the case on my car.

Is that not advisable??

It's fine to replace just the cam if there has been no trauma/drama to the rocker from a cam lobe starting to or completely wipe. If that cam has started to wipe at all, I have no earthly idea why a mechanic would recommend to not replace the rockers when they're so cheap. These cams are so sensative to wiping, anything less than a perfect rocker would simply be bad karma and set you up for replacing the pair again soon rather than later, IMO...

I'll add to that it's rare that you see a wiped *Exhaust* cam Have you seen pictures of these bad cams? Seen them in person? "Just sayin"...

Good luck,

Phil

[TrackAddict]

Originally Posted by turbophil

It's fine to replace just the cam if there has been no trauma/drama to the rocker from a cam lobe starting to or completely wipe. If that cam has started to wipe at all, I have no earthly idea why a mechanic would recommend to not replace the rockers when they're so cheap. These cams are so sensative to wiping, anything less than a perfect rocker would simply be bad karma and set you up for replacing the pair again soon rather than later, IMO...

I'll add to that it's rare that you see a wiped *Exhaust* cam Have you seen pictures of these bad cams? Seen them in person? "Just sayin"...

Good luck,

Phil

When the cover was off yesterday, I saw and felt some marks on the cams, but the wear seemed pretty light.

However, I can't say I know much about this at all, so I'm certainly not the best judge of how much damage there really is.

So if I can see some markings on the cams and can feel that they are a little worn, should I be replacing the rockers as well?

Hope this makes sense??

Hey Phil, you wouldn't have any pictures do you?

[turbophil]

It's really hard to tell ya anything for certain without pics or being there...

If you do a quick search for wiped cams, you'll find at least 2 really long threads chalked full of pics of wiped cam lobes. Hope that will help you determine the magnitude of what you've got on your hands...

If you do have cams that are breaking down (to any degree), I personally wouldn't fart around with used rockers that may be worn poorly. They're cheap parts and easy to replace. Why risk it? Plus, and more importantly, it's just bad juju In my sig " If something ain't worth doing right, it ain't worth doing..."

Just curious, if the wear is so light, why are you going through this excercise to begin with? Perhaps you're trying to create your own stimulus package for lotus mechanics?

-Pv

[TrackAddict]

Originally Posted by turbophil

It's really hard to tell ya anything for certain without pics or being there...

If you do a quick search for wiped cams, you'll find at least 2 really long threads chalked full of pics of wiped cam lobes. Hope that will help you determine the magnitude of what you've got on your hands...

If you do have cams that are breaking down (to any degree), I personally wouldn't fart around with used rockers that may be worn poorly. They're cheap parts and easy to replace. Why risk it? Plus, and more importantly, it's just bad juju In my sig " If something ain't worth doing right, it ain't worth doing..."

Just curious, if the wear is so light, why are you going through this excercise to begin with? Perhaps you're trying to create your own stimulus package for lotus mechanics?

-Pv

The reason why I'm changing out the cams is that the car is cutting out on the track under heavy load.

I had a few guys check it trackside and they scanned the ecu, checked the harness, etc...

They said the cams were the next thing to check out and once the cover came off, we saw the wear.

I'll have the rockers checked again and see where that goes.

I'll have to check the posts to see what's going on...how on earth does this stuff go bad so quickly anyways??

Never had any problem like this with my crazy twin turbo audi S4 and that was boosted up to 600hp and I did over 100 track days in that car.

Thanks again for the advice Phil.

[TrackAddict]

Back to the original question...anybody know the part numbers for the cams???

[MulhollandMotors]

I'm with Phil on this one, If your cams are worn, the rockers must be replaced too.

I've changed tons of these cams and never saw an exhaust cam go. Its always the intake side. I've also never seen "light wear". Its either worn out or its not.

The cams always seem to have uneven markings on the lobes to one side or the other, this doesn't mean they're worn out. If this is what you mean by " light wear", you might wanna do a little more research before you replace a set of cams.

As far as the Toyota P/N, why cant the parts guy at the dealer look it up? Manufacturer P/N's get updated all the time. Maybe the #'s on the monkey wrench site are old

[Monkeywrench]

There are no cam part #s because Toyota does not sell the cams separately. They are available only with rockers.

We are the only source I'm aware of for new OEM 2zz cams without rockers.

[TrackAddict]

Well, I myself am not a mechanic, but the guy who works on my car is a factory trained lotus tech. So if he's telling me both cams are bad, well, I'll take him for his word.

If you are also a former lotus tech, then you probably learned from the same guys as my buddy, so Im sure you are both knowledgeable.

Anyways, he's a personal friend so he's not trying to rake me over the coals or anything like that.

Again, what I really need to find out is the stupid part numbers...as I have already mentioned, the toyota guys were not a lot of help, so that's why I started this thread.

If nobody but monkerwrench can get these for me, then I'll go with them, but I was really hoping I could pick these up locally and get them on my car by this weekend.

Anyone.......

Originally Posted by MulhollandMotors

I'm with Phil on this one, If your cams are worn, the rockers must be replaced too.

I've changed tons of these cams and never saw an exhaust cam go. Its always the intake side. I've also never seen "light wear". Its either worn out or its not.

The cams always seem to have uneven markings on the lobes to one side or the other, this doesn't mean they're worn out. If this is what you mean by " light wear", you might wanna do a little more research before you replace a set of cams.

As far as the Toyota P/N, why cant the parts guy at the dealer look it up? Manufacturer P/N's get updated all the time. Maybe the #'s on the monkey wrench site are old

[tandemracer]

To sort of answer the original question - the Toyota part number for the intake cam with rockers is 13501-29025 and the box is labeled "CAMSHAFT SUB-ASSY".

[TrackAddict]

Originally Posted by tandemracer

To sort of answer the original question - the Toyota part number for the intake cam with rockers is 13501-29025 and the box is labeled "CAMSHAFT SUB-ASSY".

Is there a part number for the cams themselves?

That's what I'm struggling with.

[turbophil]

TA- I along with others are trying to give ya the best advice we can... If your car is missing a beat due to cam wear, then you don't have mild cam wear. It's that simple... You REALLY should replace those rockers if you're replacing the cam. I don't care if your tech is the guy that designed the 2zz, new cams and rockers are like biscuits and gravy. You dare not have one without the other!

Phil

[Monkeywrench]

There is technically a part # for each cam but you cannot order it from Toyota. They will only sell you the cams with rockers.