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Old 03-04-2017, 01:38 PM
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Default HELP with intake crossover install

Looking for advice. My intake and crossover are separated. Today I'm fixing a leak at the O-ring, so I removed just the crossover. I didn't realize there was an opening to the push rods when I cut the old gasket on the head. See pics.

Question:
See pics. When installing just the crossover is it better to cut more off from old gasket as shown I drivers side or less like passenger side? This is where I am at right now:

Driver side:

http://i300.photobucket.com/albums/n...304_123004.jpg

Passenger side:

http://i300.photobucket.com/albums/n...304_123008.jpg

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Old 03-04-2017, 01:46 PM
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I'm assuming your water crossover butts up to the intake and covers the hole with the gasket....
Most intakes I've seen cut cover the hole u r talking about and the water crossover just does that the water port

But if it's been like this I guess it works ...
.I guess u r gonna have to get a set of intake gaskets or similar and cover the hole with your water crossover...
Post a pic of the cross over if u can

Here's a pic of my intake that I've cut and left most of the material at the frt to cover the hole....
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Last edited by cnc; 03-04-2017 at 01:52 PM.
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Old 03-04-2017, 01:51 PM
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Yes the intake and crossover meet.

So should I cut back the passenger-side to match the driver side or just put new gaskets to match what I did so far and put it back together?

I assume there is no oil pressure on that oil opening so chances are it won't leak oil from there either way right? ?

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Old 03-04-2017, 02:01 PM
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I decided to just cut both sides back and put new gaskets where it is exposed currently. Seem like a safer move.

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Old 03-04-2017, 02:02 PM
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I would change the intake gaskets out but that's me....lol...
U might be ok to repair the one side that has the hole exposed but I'm not sure u would have leakage of sorts....it kinda looks like the Intake goes some what over the hole so u would probably have leakage....but can only guess....
Might be just worth it to do the gaskets...

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Old 03-04-2017, 02:04 PM
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Did u use some sealer like Right stuff or similar

What intake u running???? P4B

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Old 03-04-2017, 02:11 PM
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I would replace both intake gaskets and start from scratch. The crossover gets cut, not the gasket. Your driver's side gasket will likely leak some oil, even if a light mist. You can try a bead of RTV on the seam on the driver's side and see if it weeps oil or not.

Personally, I would never reuse an intake gasket which is what you are doing on an intake swap with the crossover cut. I know all the racers do it, but they have different reasons (cam and intake swaps on the fly in the pits)

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Old 03-04-2017, 02:45 PM
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Yes, I use Right Stuff.

I won't reuse a gasket either which is why I went ahead and cut the passenger side back as well. I can see how I may get weeping at that seem over the oil chamber. Very annoying, because that's the whole point about having a cut crossover.

For now, I'm going to put a bead of Right Stuff around the entire gasket area and button the whole thing up. If it leaks, I'll fix it right in the warmer weather when I have time and space to do so.

Sheesh, here I thought I could fix the o-ring easily without this whole can of worms!

Thanks for the quick replies everyone. Always helpful.

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Old 03-04-2017, 02:59 PM
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Oh wait, Right Stuff on both sides of gasket or one? I don't remember.

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Old 03-04-2017, 05:14 PM
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I would do like u mentioned above and see what happens.....might be ok ....????
The only way to not have this issue again should it arise is to have an intake cut correctly unfortunately So that all u will be playing with is the water crossover.....
Hey u didn't mention what intake ????? Curious

Good luck AdamisAdam...nice machine u got there.....

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Last edited by cnc; 03-04-2017 at 05:23 PM.
  #11  
Old 03-04-2017, 05:30 PM
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Yes, It's Cliff's old Q4B heavily ported by SD. I assume one of them cut it.

Finished product:

http://i300.photobucket.com/albums/n...304_162435.jpg

http://i300.photobucket.com/albums/n...304_162458.jpg


Let's hope it holds.

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Old 03-04-2017, 05:33 PM
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Looks good .....!!!!!!!!!

Fingers crossed man......hey what did u use to cut the gasket with on the car ...razor blade knife???

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Old 03-04-2017, 05:55 PM
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Thanks for the compliment on the car.

I used a razor blade on the car to cut gasket.

Hopefully the gasket and Right Stuff keep the oil in place.

BTW, I couldn't remember the preferred method of applying Right Stuff so I put it only" the head side and nothing on the intake side. I think that's preferred. I didn't use gasket cinch this time. I think that's more for the runners IIRC.

anyway, new belts on, hoses, I'll wait for a warm do to try it out.

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Old 03-05-2017, 02:00 PM
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The tight fitment of your separated crossover looks good.
The next one i cut, the coolant crossover flange will have more of a tear drop shape so the void in the head will be completely covered.



The IMG button to the right can be used to copy and post only the pic without the convoluted photobucket site.

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Last edited by Blued and Painted; 03-05-2017 at 02:07 PM.
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Old 03-05-2017, 02:06 PM
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Quote:
Originally Posted by Blued and Painted View Post

The IMG button to the right can be used to copy and post only the pic without the convoluted photobucket site.
I know. I was doing it from my cell and must have done something wrong

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Old 03-05-2017, 02:27 PM
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You don't need to cut the gasket either. That opening has no oil pressure on it, but it will still leak oil. Need to seal it up good. You should use sealer on the manifold bolt too, because all but the front go into the lifter valley area, and slowly seep oil up through the bolt threads. I use Teflon thread sealing paste on them. That way you don't have small puddles of oil forming on the manifold, under the bolts in a few thousand miles.

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Old 03-05-2017, 03:01 PM
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the crossover pictured was a hand-me down from a member and the intake was from another project. But i was able to get it sealed up.

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Old 03-05-2017, 03:42 PM
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Here's my water crossover and intake just so they are all together

I was unaware of the oil that accumulates on the bolts before as well ...I was told by another Py member to use sealer on reinstall after I pulled the intake and saw lots of oil on the bolts ....quite surprising
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1973 Firebird Navajo Orange w/shaker,1973 400/461,1972 Intake SD CNC'd,1977 Q-Jet 800 CFM w/ Cliffs Kit,Tanks Inc PA4 255 Walbro intank pump ,-8an feed/return,RobbMc Regulator,RobbMc 40 micron filter,253 CFM 6x-8's w/H.S 1:5 Roller Rockers,SD Stump Puller H/R Cam 230/236 @.050 112 lobe separation 565/.570 lift,Crower Solid Rollers,28150 Hedman Headers,3" exhaust,full tailpipes,350 Turbo,9.5" 3200 Converter,3:42 gear,8.5 posi,C/E slide-alinks,Koni adj frt shocks,Best 12.18@110.55 Lookin for 11's

Last edited by cnc; 03-05-2017 at 03:59 PM.
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Old 03-05-2017, 03:47 PM
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Nice. I actually have two spare crossovers. If anyone needs one,, let me know

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Old 03-05-2017, 03:48 PM
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Chris where did you get that thermostat housing!

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