How Tight To Do Up Bolts?

[Turbz RB-25]

Hi Fellas,

A simple question, yesterday I was cleaning out my ACC, and when I was putting it back on, I kept tightening the bolts it but it never seemed to end.

I could feel it was on tight, but as a kept screwing it didn't feel as though it was getting progressively harder to screw, but it was still fairly hard, do you get what I mean?

In any case, have I F$%ked something up?

Could there be a leak between the plennum and the ACC valve now that this has happened, and if so, how can I tell if there is a leak?

I am one paranoid mofo!!!! WOOWOWOWOWOOWOWOWO

Any help would be great

[Turbz RB-25]

Bumpity x 1

[Turbz RB-25]

bumpity x 2

[Zurlox]

It states in the manuals the torque settings, for the AAC Valve it is 6.3 - 8.3Nm which is fairly tight, best thing is to get yourself a torque wrench so you can be sure its to manufacturing standards

[Turbz RB-25]

It states in the manuals the torque settings, for the AAC Valve it is 6.3 - 8.3Nm which is fairly tight, best thing is to get yourself a torque wrench so you can be sure its to manufacturing standards

mm, but I got a plazma man plennum, maybe because it's aluminium it's different feeling now?

[cheez]

best be hoping that u havent threaded the plenum. if u have, ull have to get the hole filles and retapped or use plumbers tape and just tighten til it feels firm.

[Turbz RB-25]

best be hoping that u havent threaded the plenum. if u have, ull have to get the hole filles and retapped or use plumbers tape and just tighten til it feels firm.

WHat's plumbers tape and how does it work?

[Zurlox]

mm, but I got a plazma man plennum, maybe because it's aluminium it's different feeling now?

you need to be careful screwing into aluminium, the chances of stripping the thread is increased, you dont want to do this!

yes it will feel different, more "spongy" if you like

personally i would do it up until you can see the aac valve pull all the way up onto the gasket then maybe another full turn or two, depending on thread pitch

[cheez]

plumbers tape is a thin white elastic tape also known as teflon tape. you just stretch it over the bolt that u tightening and then screw it back in. most times, a couple of times round is heaps.

can buy it from bunnings, super cheap and even auto bahn.

Edited April 30, 2009 by cheez

[Turbz RB-25]

you need to be careful screwing into aluminium, the chances of stripping the thread is increased, you dont want to do this!

yes it will feel different, more "spongy" if you like

personally i would do it up until you can see the aac valve pull all the way up onto the gasket then maybe another full turn or two, depending on thread pitch

ahhhh shit, I turned it like 5 turns after it hit the gasket........

Does this mean it's gonna leak now?

[Turbz RB-25]

most times, a couple of times round is heaps.

Do you mean cover the bolt with this tape a couple of times, and then try feed it back in?

Or is 1 layer enough on the bolt?

[cheez]

prob b best 2 times

[Zurlox]

ahhhh shit, I turned it like 5 turns after it hit the gasket........

Does this mean it's gonna leak now?

if its still tight...possibly not, but always check the pitch on the bolt first, say the pitch is 1.25mm, (assuming im correct) one complete revolution equals a movement of 1.25mm, so 5 turns would work out to be 6.25mm of movement!

Edited April 30, 2009 by Zurlox

[Turbz RB-25]

if its still tight...possibly not, but always check the pitch on the bolt first, say the pitch is 1.25mm, (assuming im correct) one complete revolution equals a movement of 1.25mm, so 5 turns would work out to be 6.25mm of movement!

Ahhh bugga, not to worry......

How will I know if it's leaking pressure?

[gotRICE?]

You will probly hear it hissing...

Why dont you wind the bolt out and put a new one in?

You could have also stretched the thread, and when they stretch too fat they go bang, and you have half the bolt in your hand

[dangerman4]

have u go the correct bolt in there?

a 5mm will turn forever in a 6mm hole

[Turbz RB-25]

have u go the correct bolt in there?

a 5mm will turn forever in a 6mm hole

Yeah it's definately the right one, it just feels different mounting it to the alloy plennum.

As that other fella said, feels spongy instead of getting progressively tighter.... I think it should hold up. I'll test it tonight see if I get any boost dropping off.....

[Zurlox]

i dont think it has any relation to boost, its just idle control, if its leaking it might have higher than normal idle speed

[JCaSs1001]

zurlox, 6.3 - 8.3nm isnt tight at all... probably only a little bit tighter than u can do with a screw driver.

if its turned more than twice in aluminium then its nearly deffinatly stripped the thread.

should spray water around it when its running and see if it leaks. if its turbo then the boost could force it open then there will be a leak

i think best bet would b to find sum1 with a thread tapping set and re tap it and fit a new bolt..... but if the threads totally gone then u might have to get it inlarged to the next size up as there will be nothing to tap.

or mayb get a helicoil put in????

[Zurlox]

if your spraying water around the aac valve wouldnt that try and suck it in?

Edited April 30, 2009 by Zurlox