My Pnm35

[scotty nm35]

That could work. Hopefully the rubber around the plug tubes hasn't gone hard.

[PN-Mad]

It's got less kms than your motor, so should by all accounts be in better condition. If you are doing that, put a little amount of copper seal around the plug Seals.

I think there is a rubber line outer seal to replace too, that sits in the cover? Scotty? Should only be a couple of bucks.

[scotty nm35]

Yeh, the rocker gasket is around $25.

I don't like putting sealant around them, as a thin smear might fall off and partially block the oil pump or pickup (as there is nothing to hold the sealant in place). I try to minimise the use of silicone inside the engine for this reason.

[PN-Mad]

Should tell nissan that... Whole thing is held together with sealant!

I never had an issue with it when I was changing sumps over. No sealant disappeared. As long as the instructions are followed, the stuff works well.

If you use tons of it, and clamp it down hard immediately, then your right, you're in for a bad time.

[scotty nm35]

I will say it again for the deaf among us... There is nothing to hold the sealant in place, and nothing to clamp it.

As the tube is covered in oil the sealant won't stick, and there isn't another mating surface to hold it in place, hence why it will break off and float about the engine. It's a slightly different application to sealing the sump as there is a 20mm lip holding the silicone in place, plus you would be able to scrape it clean first and brake clean it.

[PN-Mad]

I see what Scotty means.

The sealant wouldn't help. It's just a thin metal edge.

[Commsman]

I see what Scotty means.

The sealant wouldn't help. It's just a thin metal edge.

Yes, but Nissan still used a little sealant on the cover gasket, at least mine had some when I removed it. Someone should tell those engineers the theory & see what they think....

On sealing around the spark plug tube, totally agree - it's pointless. Better to syringe it out every so often than risk it.

Edited February 20, 2014 by Commsman

[PN-Mad]

Yes, but Nissan still used a little sealant on the cover gasket, at least mine had some when I removed it. Someone should tell those engineers the theory & see what they think....

On sealing around the spark plug tube, totally agree - it's pointless. Better to syringe it out every so often than risk it.

It would have just been nice for them to just round off the spark plug tubes at the end to just a little flat surface, so it would seal better. But alas, I suppose the accountants got in their ear. Probably one of those will it last 3 years/100k kms things. Even the old honda I had (honda boi!) had a better mating surface.

[scotty nm35]

It's to allow expansion when the engine overheats.

Why couldn't they just have replaceable seals rather than needing to buy a complete cover assembly.

[Brick]

It would have just been nice for them to just round off the spark plug tubes at the end to just a little flat surface, so it would seal better. But alas, I suppose the accountants got in their ear. Probably one of those will it last 3 years/100k kms things. Even the old honda I had (honda boi!) had a better mating surface.

How do you deal with no vtec? It must be so boring driving your s13.

[PN-Mad]

Hahahahahah

My little shitbox didn't even have vtec! It was a uni student car.

I think it was before the whole vtec fan boi thing. The vtec models were pretty expensive in 2002, so kids couldn't afford them.

[M35woah]

How do you deal with no vtec? It must be so boring driving your s13.

Turbo + RWD + 280kw = vtec smashings.

[Brick]

Turbo + RWD + 280kw = vtec smashings.

I really hope you could tell I was being sarcastic

[M35woah]

I really hope you could tell I was being sarcastic

Heh, not that it needed pointing out. I just wanted to point out everything Honda is against.

OK, they are great first cars and grandma spec beasts.

[M35woah]

So been ripping apart another VQ35 that had melted piston.

Here are some pics of the damage.

All I need now is an E14 Female torx socket and I'll pull out the crank and pistons.

[scotty nm35]

That's not a melted piston, something dropped in there at decent revs. Was it a valve guide?

Melted piston would be on the exhaust side too.

[M35woah]

Ohhh kk, just looks melted lol.

I believe it was during tuning? Had melted spark plug with lots of black. Lots.

That's pretty much all I know, do you want more pics?

Alex and Craig would know more about what happened.

[PN-Mad]

Nup, it was actually on the quarter mile it blew up.

The motor was suffering massive amount of Det, and was shedding the electrodes from spark plugs. One may have come off and rattled around, but it looks as if the det blew out the side of the piston rings too. You'll see more once you remove the piston and rod.

[M35woah]

Did he atleast finish the quarter?

[PN-Mad]

Yeah, it kept driving on 5/6 but through heaps of oil down the exhaust for obvious reasons. Just a little crank case pressure issue.