Q's about bridgeports
02-12-2006, 06:55 PM
#11
Fabricator
Join Date: Jan 2004
Location: Central Ohio (Hebron) Zephyrhills Fla.
Posts: 1,322
Originally Posted by 13BTNOS' post='798620' date='Feb 1 2006, 08:09 AM
How important is the closing edge of the sideseal in regards to it's path over the port. Does it need to be supported or not? If you look at the port you can see the scribe mark that is the path of the leading edge of the sideseal it is supported across the whole bridge. Port is ruff cut haven't cleaned it up yet.
The trailing end of the side seal is unsupported. The end will sag slightly into the port at low speed.
No big deal, but it causes the edges of the seal to wear a bit round and loose compression.
I radius and polish the whole closing line with special attention to the upper right corner of the big port, to ease the seal back onto the flat.
Note that the end of the seal runs into the side of the closing port when it is rounded at the closing line.
This wears the end of the seal off and makes a dent in the edge of the port.
I like the straight top edge.
It will run just fine.
02-16-2006, 12:12 AM
#13
Senior Member
Thread Starter
Join Date: Dec 2004
Location: Kitchener Ont Canada
Posts: 219
Yeah after I cleaned it all up and did a bunch of measuring, I've decided I dont want to use it in a customers motor....the porting may have been taken just a little too far and I just dont want to risk it.
So I went and bought another RE motor for the guy, I may use these irons in a motor for myself.
So I went and bought another RE motor for the guy, I may use these irons in a motor for myself.
02-24-2006, 06:02 PM
#14
Junior Member
Join Date: Feb 2006
Posts: 16
if you make the bridge whr th conner an side seals run about 5mil wide and whn you cut th port cut it on a angle and go back as far as 1mil away from the water seal on the factory port ths will depend if you want a soft or a hard close and whn you udo the housings make sure you cut thm on a 45deg and remove th metal insert thn do the exhaust port and you can use a 1peice or a 2peice apex seal on a full bp in which ths is all i do it is a waste of time to do a half bp
04-23-2006, 02:48 PM
#15
Member
Join Date: Oct 2003
Posts: 69
Originally Posted by BDC' post='795324' date='Jan 20 2006, 08:05 AM
Apparently he cuts the corner piece to be thicker than the Mazda one as they were originally designed with bridgeporting in mind. They are cut to prevent themselves from falling into a bridged intake port. The sharp, triangular corner pieces (like stock Mazda) however will get stuck and fall in the port so do not put those on the bridged side!
B
So with the wider corner piece, would it still be better to just flip the seals and have the corner piece facing the primary ports on a half bridge to prevent for any potential problems and longer life? I also read some where the Mazda seals had some coating of protection on the leading edge of the factory apex seals but not on the other side. If this is true, wouldn't flipping the factory seals shorten the life of the apex seal?
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