4runner tappet cover oil leaks

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skik
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Joined: June 21st, 2008, 6:43 pm

4runner tappet cover oil leaks

Unread post by skik » June 11th, 2015, 4:53 pm

Hi guys
i have a v6 4runner with leaking tappet cover gaskets have ordered a new set was wondering if shortening the bushes the bolts run through to increase clamping pressure slightly will make a difference the last time i did the gaskets i ran a bead of silicone around them but didn't seem to make any difference
any ideas would be greatly appreciated
thanks

mydmax
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Re: 4runner tappet cover oil leaks

Unread post by mydmax » June 11th, 2015, 5:41 pm

silicon is often not much chop. Try using Loctite 516 Red plastic sealant. On clean oil free surfaces it does a very good job.

skik
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Joined: June 21st, 2008, 6:43 pm

Re: 4runner tappet cover oil leaks

Unread post by skik » June 12th, 2015, 12:03 pm

thanks Mydmax will have to see if i can get any locally being in a small town theres not a lot of options

chris_stoffa
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Re: 4runner tappet cover oil leaks

Unread post by chris_stoffa » June 12th, 2015, 3:13 pm

And don't clamp it down too tight. Finger tight only at first to allow the sealant to set and take form.

Then torque it down to the correct spec - many over tighten the bolts too far too fast and it just squeezes everything out.

Cheers
03 Bravo 2.5TD DCab

skik
Been here a while
Posts: 160
Joined: June 21st, 2008, 6:43 pm

Re: 4runner tappet cover oil leaks

Unread post by skik » June 12th, 2015, 4:16 pm

on the 3vz's it has like a Colette that runs through the tapet cover and pills down tight on the head my thoughts where that it dosen't allow quite enough clamping pressure but will keep in mind the initial tightening

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