Crossover Tube O-Ring Size??? 96-98

[Mechanic]

Did the top of my motor a few weeks ago and pulled the coolant crossover tube out and wanted to replace the O-rings. Standard size O-Rings dont seem to fit So I had to reuse the old ones. Didnt have any problems until last weekend I noticed a little coolant weeping above one O-Ring. I went to Ford and they dont seem to have them(couldnt identify them), I went to Lincoln didnt seem to have them either. I searched all Ford forums including this one for the size and found nothing. I went to the Junkyard this morning and pulled a whole crossover tube assembly off a Mark 8. Im pretty sure its a metric O-Ring I just need to know the size and/or Ford part # if one exists. The closest thing they have was a whole new crossover tube for $180 which they said was unavailable at this time. Theirs 4 O-Rings altogether and three of them are the same size and the fourth is for the fill plug. Any help is greatly appreciated.

 

[Tabres]

No idea here, but good luck finding it.

Ford dealership couldn't tell me, and I had an entire manufacturing facility at my hands with literally every size you could imagine and I never found it.

I just wrapped the sucker in a LOT of plumbers tape and it worked.

 

[fullofvenom]

i have an o ring kit that has around 2 million o rings in it and not ONE of them fits perfectly. there is a "kit" from ford that has the 3 in it (one for each end at the head and one for the connection in the middle), but I don't know the part number.

 

[98 svt]

This makes me worry....Do I really want to clean my IMRCs that bad.

 

[006]

Think one of these might work?

http://www.fordracingparts.com/parts/part_details.asp?PartKeyField=5288

Otherwise, get this:

http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=2901

Good Luck!

Ken

 

[Mechanic]

I found an O-Ring calculator and measured the tube relief and the head bore and depending on the amount of O-Ring compression either a 2.5mm X 27mm or a 3mm X 27mm should fit. I found these in a McMaster-Carr catalog so I guess I'll order both on Monday and should get them by Tuesday. This sucks.

 

[98 svt]

Have you tried contacting this guy?
http://svtperformance.com/forums/showthread.php?t=322845
He may be able to help you out.