I'm pulling off my intake manifold to replace it with an LS6 intake... when i took off the old one i found there was alot of dirt undernieth it like seeds,dirt, possibly some very very very small rocks... not sure how it all got in there but there it was... so while trying to clean it up i think i little might have fallen into my head... is this gonna be ok? I mean it's really really small stuff..

 

TTT please.

 

Get yourself a vacuum cleaner with hose and long attachment and suck out all that dirt out of the heads before you replace the manifold. It's normal to have dirt in there since the manifold seals on the head surfaces and not the valley cover.

 

oh duh.... i knew there was a reason there were attachements on my vac.. i tried just using the vac but couldn't squeeze inside... i feel so dumb

thanks.

 

Wow, I'm doing the same thing today I was going to use the shop vac on mine before I put the new intake on.

Anyone with good advice about reconnecting the vacuum hoses on the back of the intake??

 

It works off... the break hose right? I had to use a screw driver and kinda pry under it to loosen it up.. after a little work you have to be firm with it and it pulls right off.. It slides on alot easier than it came off. You should pull the whole hose out when you took the take off.. as for the little one.. i have to finger it as it appears...


hmm I just realized GM only gave me 1 block off and one 01 coolant line.. I think i'll chop up the old one and put some JB weld inside and block it off that way.. anyone see a problem with this?

what kind of pressure is the coolant pushing through at?

 

Ya, I'm worried more about putting the little one back on as well the electrical connection. I don't seem to have as much room as what some of the tutorials show. The brake one doesn't see too bad as it can be disconnected from the master cylinder.

I think the LS1 site has instructions where they cap off a rubber hose for the rear. I would think you plan is ok as long as you get the tube really clean first. Maybe crimp it as well.

Anyway, I'm off to give it a try I want to drive it some tonight!

 

Leave the brake line in place. Put the manifold about 3/4 of the way on, and then connect the vacuum line and the connector for the MAP on the back of the manifold. Then you need to lift as you put it on the rest of the way. You will know when it is in place correctly, it drops right on. Hope you have a small in-lb torque wrench.

 

btw, I reused my 99 coolant line when swapping over the the LS6 intake. I just took out the dremel and did a little custom clearance work to the bottom fins on the intake. I heard somewhere that the later models with the plugs occasionally had detonation problems with #7 due to the coolant passages being blocked off. Not sure how true this is, but I figured it couldnt hurt and saved me money.

 

The seeds and other organic matter are most likely from mice. They typically do this in the fall for the winter ahead. Small stones and sand are likely from driving conditions.

Vacuum all loose debris, remove the spark plugs and use an air hose to blow any debris that may have fallen into the intake port. The seeds are one thing and won't cause damage but the stones on the other hand will, so it's important to get these out.

Bob