Intake bridge dilemma...
- Thread starter dmax_ty
- Start date
For the last few years I RTV the Y bridge gaskets into the bridge and then install it after it's set up
I think he's talking about getting the elbow that comes into the Y-bridge from the front (with the 2 o-rings) on it into the Y-bridge itself.
I use axle grease for a number of the things, including mounting o-rings.
It will keep the fuel pump rod in the SBC while you install the pump.
It will keep a gasket in place while assembling anything.
It will stop bolts from rusting.
Installing tires onto rims (non-racing) in your garage with spoons.
Assembly lube (non-racing).
Etc.
On the intake elbow, take a rotaburr tool to the bridge entrance if the edge break is small or sharp. This stops the o-ring from getting cut.
It will keep the fuel pump rod in the SBC while you install the pump.
It will keep a gasket in place while assembling anything.
It will stop bolts from rusting.
Installing tires onto rims (non-racing) in your garage with spoons.
Assembly lube (non-racing).
Etc.
On the intake elbow, take a rotaburr tool to the bridge entrance if the edge break is small or sharp. This stops the o-ring from getting cut.
I don't ever use grease, its a pain, but if your having THAT much trouble your orings probably have expanded and I'd get new ones.
I calculated the load on that bridge, and it's a few hundred pounds of force. Area x PSI. Best guess is they wanted a seriously tight fit.
From the way he put it in his post I am guessing his blew out and the orings are expanded. I've put multiple sets of orings in mine and it just takes some finessing.
I finally did get it in.
The entire assembly was allowing for too much movement when under power...20+ psi on the boost gauge and would blow out the o-rings.
With some cussing and fighting and carrying on it finally gave in and slid in fully seated :woott:I had to come up with a little brace to keep the whole intake from moving too much. And much to my surprise it worked.
I'm just happy to have it back up and going. It is pretty freaking pathetic when that elbow will pop out with just a little wiggling. I don't even remember touching it when I took the EGR cooler out, but I probably bumped just right. Oh well, it's in the past...hopefully
Thanks for all the help.
The entire assembly was allowing for too much movement when under power...20+ psi on the boost gauge and would blow out the o-rings.
With some cussing and fighting and carrying on it finally gave in and slid in fully seated :woott:I had to come up with a little brace to keep the whole intake from moving too much. And much to my surprise it worked.
I'm just happy to have it back up and going. It is pretty freaking pathetic when that elbow will pop out with just a little wiggling. I don't even remember touching it when I took the EGR cooler out, but I probably bumped just right. Oh well, it's in the past...hopefully
Thanks for all the help.
Doesn't the EGR cooler hold the part in? When you do the delete theres nothing to keep it all together?
The brackets on the delete pipe are suppost to do the job. I made two brackets on my delete pipe and it wouldn't hold it in. If you do the math as Pat suggested, the amount off force pushing out on the elbow is substantial. I had trouble with mine flexing and coming part way out.. that wasn't the end of the world but the constant moving everytime it saw pressure eventually wrecked the o-rings.... Building that piece I showed above stopped it from moving at all... key to both sealing and o-ring life. I don't know that all delete pipes suffer from this problem like mine, but I would be willing to bet there is enough movement to eventually kill the o-rings....
Do you have any more of those by chance?
It's pretty solid the way I have it now, but a little extra, pre-cautionary, effort never hurts.