Cascade Crew

GREG DAVIDSON

on the back runners on my on the heads of the engine i just pulled out the gasket blocked them off any idea why ?? heres a pic it seems like a light duty aluminum with two peices back to back

rjmcgee · The Hammer Joined: 08 Jan 2004 Posts: 2328

That's a water crossover. It seems likes ome intakes use it and some don't. I don't think it's used on my RPM intake.

Now I'm not sure, I'll have to look tomarrow.

GREG DAVIDSON · Posted: Wed Jan 07, 2009 12:11 am Post subject:

i was thinking it was a water jacket of some sorts , it does have a little nub that looks like a water thing blocked off on the back of the block too i can get a pic if anyone wants to see it

Twilightoptics · Posted: Wed Jan 07, 2009 7:42 am Post subject:

Most intakes don't use that water passage.

GREG DAVIDSON · Posted: Wed Jan 07, 2009 2:49 pm Post subject:

ok so its nothing i should be worried about from what i gather good

GREG DAVIDSON · Posted: Fri Jan 09, 2009 10:03 pm Post subject:

another question i noticed in another thread somthing about the 305's in our cars dont come stock with exaust manifold gaskets.... mine didnt have any on either im taking the ones off blown engine and putting on the one going in there just in alot better shape should/do i need to get gaskets for it and if so what are the best to use ?? its not somthing i wanna learn the hard way Laughing

chevymad · Posted: Fri Jan 09, 2009 10:06 pm Post subject:

Do you have a real good straight edge? If so lay it against the manifold and see if its straight. If its good you can bolt them on without gaskets. I do like to use some exhaust gasket crack and seam sealer on em though. Just fills in any imperfections. If they're not totally straight just use the rebuilder type gaskets. They'll work fine for manifolds. Best if you retighten once or twice though.. kinda like headers.

GREG DAVIDSON · Posted: Fri Jan 09, 2009 10:14 pm Post subject:

ok cool i'll have to get out and look thank you

GREG DAVIDSON · Posted: Fri Jan 09, 2009 10:47 pm Post subject:

just thought of another one sorry for the ramped post but like i said its my first build lol..... now on the intake bolts (im swapping intakes to) do i need new bolts like on the heads ? i know on the head bolts you replace em each time due to the torque on them are intake bolts the same i dont think so but and tid bits of advise on anything will be helpfull

chevymad · Posted: Fri Jan 09, 2009 10:50 pm Post subject:

Actually on a sb chevy you don't need to change the head bolts either. The only bolts that need to be changed are torque to yield bolts. These would be any that you torque and then tighten to a certain angle afterwards. Any bolt that is just a straight torque can be reused. You'll also want to use a bit of sealer on the intake, and the head bolts. The head bolts go into the water jacket, and can leak water into the oil if you don't seal them. The intake bolts go into the lifter valley, and you can puddle oil on top of the intake if they're not sealed. Use thread sealer with teflon..

GREG DAVIDSON · Posted: Fri Jan 09, 2009 10:53 pm Post subject:

heads stayed on the engine im putting in thanks for reminding me i need teflon tape i spaced it i have the black rtv sealent to go accross the front and rear of the intake as well that should work ok right ?

chevymad · Posted: Fri Jan 09, 2009 11:12 pm Post subject:

You dont want to use tape on the bolt threads. Use pipe and thread sealant with teflon, or permatex #2. Tape is ok for pipe threads.

GREG DAVIDSON · Posted: Wed Jan 14, 2009 3:26 pm Post subject:

chevymad · Posted: Wed Jan 14, 2009 6:16 pm Post subject:

You really dont want to use a silicone sealant. Any parts store should have either permatex #2 non hardening or the thread sealant. Permatex #2 is one of the oldest sealants made.

GREG DAVIDSON · Posted: Wed Jan 14, 2009 6:32 pm Post subject:

ohkee dohkee will look again dam i dont know what i'd do if i wasnt on this forum Laughing

thanks brandon

chevymad · Posted: Wed Jan 14, 2009 7:43 pm Post subject:

Even the plumbing section of a hardware store should have the teflon pipe sealant.

GREG DAVIDSON · Posted: Wed Jan 14, 2009 7:48 pm Post subject:

GREG DAVIDSON · Posted: Wed Jan 14, 2009 9:11 pm Post subject:

now the sensor thats comes out just above the oil filter thats the oil pressure switch right ?? now im buying the sensors i broke

fiveoformula · Posted: Wed Jan 14, 2009 9:16 pm Post subject:

GREG DAVIDSON · Posted: Wed Jan 14, 2009 9:37 pm Post subject:

good to know !! maybe i'll just get both Very Happy

wheres tho one on the intake ?