New GR Tappet Problem.

[steelroe]

i have fitted several sets of tappets to GR engines over the past few years, never had a problem untils today.

Fitted a new set to an FTO Ireland owners GR today, did front bank first (supplied by Camskill). Put it all back together and started it up (only front bank done). It was 10 times worse than the old ones. Double checked everything even the timing (just incase). Still nothing. Tappets were steeped in oil for a number of hours beforehand.

Sounds a lot like a bent valve. Constant tapping.

Got really p****d off so removed the new ones and put the old ones back in, and low and behold everything was fine.

Anyone any suggestions or ideas as to what may be wrong

[Sebastian]

changed my tappets last week (camskill supplied as well)
big thanks to tommysuper BTW


car was not started until all 24 of them were changed .
for the first 10 mins whey were exacly like the old ones .. the noise was there .

after i gave it a run and let the engine worm a bit they start to quiet down .

will you eventualy change them with new?
were the old tappets hard as a rock?


i couldnt compress mine not even with a hammer

[steelroe]

I have the new set to go in. I think is may be a problem with air in the lifters. Installed the front bank again and will try the "Pump Up" procedure again in the mornin.

The reason you cannot compress the old ones id they are full ot oil. The new one will be the same once they fill up with oil. That is how they work., they lock solid as the cam opens the valve.

[steelroe]

Problem Solved.
serious amounts of air trapped in the new tappets. Sounds sweet now.

[Sebastian]

Problem Solved.
serious amounts of air trapped in the new tappets. Sounds sweet now.

how's that ?

[steelroe]

The lifters are not primed with oil at the factory. Used the lifter priming procedure and all sorted now.

The lifters operate on hydraulic pressure inside. If the is air inside, the oil cannot get in therefore the lifters can compress, giving the knccking. Once all the air is out the lifters are rock solid when opening the valve, as they should be.

Never had this problem with the previous ones I done.

[mcgon1979]

how did you get the air out? I've seen this before with new tappets and it was literally a case of running them for 15 mins and waiting for the oil to get in naturally, is that what you did or is there a quicker more effective way?

[steelroe]

see CJ post here taken from VR4 forum
http://www.fto-ireland.com/forum/phpBB2 ... ht=tappets

[Dean]

WOOHOO.


NO.


MORE.


TAPPET.


NOISE.


Thanks for that steelroe. Excellent job, purrs like a kitten.

[Sebastian]

Dean did you notice any improvement on the car apart from the noise reduction?

[Dean]

I have to say yes. It might be just in my mind because it sounds better, but there is definitely more pull off the start.
It could also be because the cat bypass is installed now. Its never been on before.

[mcgon1979]

deffo the cat bypass...

[wwvitaly]

Hi everybody, I have 95 GR and my tappets are very noisy I'd like to get them changed, would anybody be interested to do the job?

[Dean]

Hi everybody, I have 95 GR and my tappets are very noisy I'd like to get them changed, would anybody be interested to do the job?

Camskill has a sale on them at the moment, I would recommend getting them there.

If you are in Dublin I am sure the local guys here would give you a good name.

[Sebastian]

Hi everybody, I have 95 GR and my tappets are very noisy I'd like to get them changed, would anybody be interested to do the job?

i guess fastest option would be camskill
you'll need a few more bits though .

might be a good ideea to change the plugs as well and belts and all if you start refreshing your engine.

if you get stuck let us know

[misterbishi]

Had this on a mirage R for ages and it was bugging me. I flushed the engine with engine flush a couple of times and by shear chance done somthing similar to this ..I think at the time I was just trying to pick out where the noise occured most... anyway it vastly improved things.. I just assumed it was the engine flush at the time..

[steelroe]

I would recommend replacing the plugs as per Seb. But other than that you do not need any special tools. Either 2 good pry bars or 2 srrong flat blade screwdrivers. Also a good idea to apply some gasket sealant to all the corners of the rockler gaskets when putting the rocker covers back on. One very handy tool to have is a magnetic retreiver.

Make sure what ever you do, cover over the inlet when you remove the inlet plenum. Dont want anything droppin in there and damaging valve or piston.

[Sebastian]

Also a good idea to apply some gasket sealant to all the corners of the rockler gaskets when putting the rocker covers back on

make sure you have ainlet manifold gasket as well . yours might brake when removed

One very handy tool to have is a magnetic retreiver.
Make sure what ever you do, cover over the inlet when you remove the inlet plenum. Dont want anything droppin in there and damaging valve or piston.

happens to the best of us rory

vitaly just make sure you have plenty of light , magnetic retreivers and nerves of steel not to drop anything in the beasts heart.

[steelroe]

Not a difficult job really. Just do one at a time., ensuring the valves for the particular cylinder you are doing are fully closed (Least pressure on the followers).

Manifold gasket should be fine if it is OEM as thay are metal. Handy to have one just in case.

As regards nuts and bolts etc, put them all away to one side just incase.

[wwvitaly]

Thank you guys for the info, but I don't think that I am going to do it myself; engine is the one part of the car that I am really afraid to mess with. I am in Dublin, and it would be very helpful if you guys could point me in the right direction for the affordable labour.

[Bernard]

I'm in Limerick but the Dublin lads swear by Paul Nolan, his number's in the services page.