cleaning plenum chamber

[casper0]

heys guys am planning to clean inside the plenum this weekend and i was just wondering should i block the holes while am spraying carby cleaner? other thing is bout the plenum gasket do i have to buy a new one or reuse the old one? last thing i know that the bolts for the plenum are hex ones can somebody tell me what size are they?

any advise plz.
thanks

[soop]

From memory the its a 6mm allan key and 10mm bolts to remove the plenum from the manifold.
They're O ringed so you can re-use them. You could also use a little gasket silicon to make sure.

Use some good carby cleaner and a stiff brush. The burnt oil sticks like shit to a blanket.

[Fletch_QLD]

Some photos of your progress would be good casper

[soop]

What do you want photo's of?
I've got tonnes.

[madsav]

You could always do what i did, after removing the manifold in a WELL aired out area use mr muscel oven cleaner , i know sounds nuts but it cleaned my old commodores manifold up really easy
Oww and dont forget to have alot of rags to clean it up

[casper0]

thanks anyway mates, i have read in other thread that removing these bolts with allan key is a no no. using a hex is a yes yes lol. anyways i dnt want to remove the plenum from manifold at all. just wanna clean inside and arround the holes only but somebody told me to cover the holes so the shit will not go inside the manifold runners. any advice?
lol for sure i'll post some pic when done no worries.

[soop]

I've been told that oven cleaner contains caustic. Alloy doesnt like caustic much.
That said, i've used it on severly corroded carbs before and not had an issue. Just thought I'd throw it out there

Nah, if you use the right Allen key it works fine. I could have sworn they were allen key heads anyway.
I would strongly recomend removing the plenum. You don't want that shit running down into the motor. It wont really hurt it, but it'll be a prick to start and probably not want to run right for a bit.

[acarmody]

thanks anyway mates, i have read in other thread that removing these bolts with allan key is a no no. using a hex is a yes yes lol. anyways i dnt want to remove the plenum from manifold at all. just wanna clean inside and arround the holes only but somebody told me to cover the holes so the shit will not go inside the manifold runners. any advice?
lol for sure i'll post some pic when done no worries.

I've always used an allen key and never had a problem.

Just stuff some toiletpaper or rags in the runners. Probably unnecessary but why not

[casper0]

I've been told that oven cleaner contains caustic. Alloy doesnt like caustic much.
That said, i've used it on severly corroded carbs before and not had an issue. Just thought I'd throw it out there

Nah, if you use the right Allen key it works fine. I could have sworn they were allen key heads anyway.
I would strongly recomend removing the plenum. You don't want that shit running down into the motor. It wont really hurt it, but it'll be a prick to start and probably not want to run right for a bit.

so mate if i removed the plenum from the manifold do i have to buy a new gasket for the manifold?

[zapper-l67]

where did that other thread go Soop..
I was just reading all the crap and it disappeared.

[casper0]

where did that other thread go Soop..
I was just reading all the crap and it disappeared.

there is an old thread bout somebody who want to replace the whole plenum with the injectors and everything. but ending up replacing only the plenum chamber only.

[casper0]

guys if i removed the 6 mm bolts from the plenum will i should replace the manifold gasket?

[acarmody]

No, it will be fine.

[soop]

No, they're O-ringed. So they'll be fine so long as you don't do anything stupid.

Zapper, mods killed it.