Intake and exhaust tappets?

[payaya]

Because Mitsubishis are stupid.

[silverGPX]

0w is pretty much water dude. at least 10w.

yes 10w is a lot of difference.

[mosti]

Mate that's the thickness when it's cold. Tappets are noisy even when the car has been driven for a good 30mins... lol

Anyway, I went out and purchased 15w-50. I know i know its probs too thick but this noise is embarrassing and I want to see if the oil will make any difference for now. I've tried my best to fix the tappets but I'm not getting anyway and it's no small task either!

Also bought a wynn's package of engine flush, injector cleaner and engine protectant.....oh and the stuff that cleans your lifters/tappets.
Bought a new filter too (seeing as im changing oil)....told the guy enything but ryco He looked at me weirdly and said the only other they have is drift. Dunno wtf brand that is but meh, ill see how it goes lol.

[Bennoz]

Ok, a few things here...

- 1st, what position should the cam be in when sliding the feeling gauge in? The lobes should be 180 degrees away from your feeler.

- 2nd, I don't know if anyone has mentioned it earlier in the thread, but there are small plastic collect that sit around the tappet itself. Over time, these generally crack away & end up in your sump. Check to see if you are missing any of these as they will cause noise, no matter how well you adjust the clearances.

- 3rd, now no one has mentioned this, but in the Mivec motors there are also 12 hydraulic tappets. Their purpose is to keep the Mivec lobe follower in contact with the cam while the oil operated Mivec piston in the rocker assembly is not engaged. These lifters are very similar in operation to GR hydraulic lifters & will also make the asme tap-tp-tap noises.







And finally, with the risk of repeating myself - DO NOT change the grade of oil you use to mask the noise. You will make the problem worse down the track. Furthermore you'll have a real hard time trying to sell the car on here down the track, as we will all know what you've done to it...

[mosti]

One last thing, been googling and asking whoever I can but no answer yet!

Do you back both tappet nuts off and adjust both tappets exactly the same to give the tight clearance? Or does it not make a difference if only one tappet is adjusted to give the correct clearance?

Only masking it up for now, tried to fix it. Might be the collets as you said. Was too greasy and dirty to be able to tell if any were broken :s

How much are the collets? I'm guessing they need be purchased from camskill?

[Bennoz]

Do you back both tappet nuts off and adjust both tappets exactly the same to give the tight clearance?

Yes, do both.

[payaya]

How clean is that head Bennoz? Is that normal? Think I used too much Magnetec in my FTO and the oil has baked onto the engine internals. Or maybe I am getting old.

[mosti]

How clean is that head Bennoz? Is that normal? Think I used too much Magnetec in my FTO and the oil has baked onto the engine internals. Or maybe I am getting old.

Dw man mine was dirty too lol. As you tune the tappets a lot of oil comes off onto your hands, cranking the engine etc etc and it looks cleaner at the end.

[mosti]

http://www.ebay.com.au/itm/91-99-MITSUB ... 2eb16e5c81

So are these the hydraulic lifter tappets I need for my GPX?

Pulled the link from a search I did but just want to clarify, as no straight forward answer was given.

I'm not taking this to a mechanic because I know that I have adjusted the tappets correctly as it isn't hard at all. Anyone with the right tools can do it.

I do however want the problem sorted but I will be doing it myself.

[mosti]

Oh and how do I know which one's are the non adjustable ones?

Seriously, there is so much conflicting information.

First thing that needs to be done is the DIY thread removed! It really is a very poor job..

SOurces say there are 24tappets.....for the mivec they're adjustable. And...they are adjustable as I've adjusted 24tappets myself.

But now this is a little conflicting...

Correct ^

Mivecs have 12 adjustable and 12 hydraulic. The hydraulics are to keep the Mivec rocker arm in contact with the cam when they are not in use.

They are not interchangeable with GR or 'Non Mivec' hydraulic lifters. They're different.

Plus you have the added complication of the little plastic collets on the adjustable tappets that quite often crack off & dissappear.

But all the tappets had a locknut with a tensioner screw. So how are 12 of them non adjustable?

MASSIVE MIND f**k RIGHT NOW
o.O

[mosti]

- 3rd, now no one has mentioned this, but in the Mivec motors there are also 12 hydraulic tappets. Their purpose is to keep the Mivec lobe follower in contact with the cam while the oil operated Mivec piston in the rocker assembly is not engaged. These lifters are very similar in operation to GR hydraulic lifters & will also make the asme tap-tp-tap noises.

So GPX's have 36 tappets...is that what's being said here?

Where are the remaining 12 located? If the 24 are barely visible I can only just imagine what needs to come out to get to the remaining 12. The whole camshaft needs to be removed doesn't it?.. (wild guess)

[Bennoz]

Take it to a mechanic mate. If I have to explain it again, I'll strangle someone.

[mosti]

Well it hasn't really been explained properly at all...
There are 24 tappets.
12 in the front head, 12 in the rear.
2 tappets to each cam lobe...

These 2 tappets adjust the clearance of the low speed cam lobe...

So the question which has not been answered a single time by any person on this forum for the entire duration of its existence....and I know this because I've been researching for days and days for hours and hours.....
Which of these 12 tappets are hydraulic and might be the possible cause for my tapping (the clearances are spot on).

Also, Bennoz, you are the only person who has mentioned the GPX having 12 hydraulic tappets.

All the mechanic will do is "adjust" what has already been adjusted and there will be no difference for a good $400 minimum labor.
The problem won't be solved.

If you happen to quote where you have answered what I'm asking I'll write you a written apology and have it mailed to your letter box.
But I have searched for quite some time and have found absolutely nothing apart from you mentioning the GPX has 12 hydraulic tappets, on 3 separate threads.

EDIT:

"now no one has mentioned this, but in the Mivec motors there are also 12 hydraulic tappets."

The way you say also leads me to believe these are an additional 12 tappets seperate to the already 24 which adjust the clearances of the cam lobes....

[Kustom]

Theres only 24 tappets in a 6a12 lol. Mivec has 12 adjustable and 12 non-adjustable

[Bennoz]

The way you say also leads me to believe these are an additional 12 tappets seperate to the already 24 which adjust the clearances of the cam lobes....

That's because there is.

Re-read what I wrote very carefully mosti.

Their purpose is to keep the Mivec lobe follower in contact with the cam while the oil operated Mivec piston in the rocker assembly is not engaged.

I've even been so kind as to circle them for you, seeing as you need to to be spoon fed.




Also note, you cannot 'adjust' a hydraulic tappet, you either recondition (see write up I did on ozvr4 below based on non mivec style lifter - same principles would apply to these lifters) or you replace them.

Hey guys, some years back, I did a fairly comprehensive 'how to' on replacing your tappets on FTO Aus. Here is the link:

http://www.ftoaustralia.com/modules.php ... pic&t=7258

Now because the 6A12 non mivec heads are almost identical in design to the 6A13, I thought this might interest you guys.

Yesterday, I had finally had enough of the tappet clatter coming from my 6A13 & decided rather than fork out $500 to replace them, I'd simply reco them

You can use follow the guide on FTO Aus to getting the tappets out, then you can use this guide

The main reason they get noisy is because they gunk up with burnt on oil sludge on the inside. Notice how when you attempt to depress the tip, its almost impossible? Ie all but seized up..



As opposed to a new tappet which depresses quite easily:



First up, drop it in a degreasing type solutions & soak it for a minute. I used Nulon engine flush.



Then pop the tappet in your vice like so. I used some rag on either end of the tappet to avoid scoring the ends. Also try & get the tappet positioned so that the small oil gallery hole is facing upwards. This way you can see the crap coimg out of it.



Now with the vice, you need to use a bit of a technique. You need to pretend you are tapping a thread. You wind the vice on a little bit & tip will begin to depress a little bit - then unwind the vice to relase the pressure. Then wind the vice in a little further the next time, then release again. Repeat the process 3 or 4 times until on the last time you fully depress the tip. You will feel when its fully depressed, you will be unable to wind the vice any further.

Whilst this is happening, note the brown sludgey oil that coming from the oil gallery in the tappet. Each time you wind the vice in, you are scraping burnt on oil off the inner diametre of the tappet - the section where the tip is supposed to slide in & out of easily.









Once done, drop the tappet in your degreaser solution again. Now check & depress the tip with your finger. You'll find it springs in & out with great ease

Before you reinsert the tappet back into the head, ensure you give it a good covering in nice new oil too.





Now, I'd give you a little video of how nicely smooth & quiet the car is now running, but thanks to one of my very f**king expensive handmade Top Gun leads snapping of in the plug hole, that won't happen till Monday

Hope thats helpful!

Cheers,
Bennoz

I cannot possibly break this infomation down any further, if you still do not understand, take it to a mechanic as was first suggested 4 threads & multiple pages ago.

[Storm]

God but you Aussies have some amount of patience! Somebody would have shot him by now if he was Scottish! It's a small country - he would have been hunted down!

[mosti]

Theres only 24 tappets in a 6a12 lol. Mivec has 12 adjustable and 12 non-adjustable

... there are actually 36... 24 adjustable and 12 non adjustable.
Get your facts straight before you start posting sh*t. (yep had to edit with a change of attitude after your comment above..)

Bennoz, had you actually directly answered my questions this thread would be 2 pages shorter...

How the f**k am I suppose to know how many tappets are in the engine. Everyone reckons there are only 24....and thats what just about every thread which mentions the words "tappets" says.
And now you're blaming me for not knowing? I've done my research and NO WHERE does it state there are 24 adjustable tappets and 12 non adjustable! ( all in the same sentence)

All you had to do was simply say....

There are 24 adjustable tappets and 12 non adjustable which are located under the......

BAM that is all.
Is it really that hard?

And no I don't need to be spoon fed, just answer my questions properly and all would be fine?...

take it to a mechanic as was first suggested 4 threads & multiple pages ago.

1. I don't need a mechanic to do what I'm already capable of doing (when the CORRECT information is given). I have every tool imaginable, a 4 car garage and time on my hands....what more could I need.

2. There's actually only one thread mate, don't know where the other 3 came from....

3. Your contributions were asked for through pm, and still you failed to answer all of the questions being asked and then you even went on to mention you're not going to repeat yourself...?

I've already read through through your DIY on reconditioning tappets, so there's no new information for me there.

Anyway, thanks for clearing up my questions, it's been a great help!

God but you Aussies have some amount of patience! Somebody would have shot him by now if he was Scottish! It's a small country - he would have been hunted down!

Storm, go f**k yourself

[mosti]

Mivecs have 12 adjustable and 12 hydraulic.

.....

Still going to blame me for being confused???

enough f**king said.

[silverGPX]

Bro, bennoz is ftoau club president....

[mosti]

de-gunk your hydraulic lifters that are sitting on top of your Mivec followers, cause these if gunked up, which they will be, will also make a tappey noise. Easy job, just need to take each cam cap off (these lifters are located in them), drop them out, sqwig (!) them in some diesel till they move in and out with easy, reinstall the cam cap (get them to clean the mating surfaces between the cam cap and the block, if they dont, any c**p on the surfaces will starve your cams of oil!!!) and there you go!