Quick question,,



I see most bridge ports on the secondary ports only.Is this because running a bridge on the primary also will be too much or will the small corner piece of the apex seal fall in.The small piece of the seal looks to me like it would not be supported enough to work with a bridge specifically if you radius the housing,I may be missing a simple answer but I couldn't figure this one out; except for running one piece apex seals.Also does anyone run a bridge only on the primary ports?It would seem with a bridge on the primary ports and a large street on the secondaries it might work out well,but then again I may be missing something.Please enlighten me....All opinions and thoughts (experienced) are welcome.





nick

Some people just want the best of both worlds. If you go half bridge then you have better low end power. If you go full bridge then you will have better top end. This has nothing to do with the corner pieces. They will stay put as long as the bridge is centered on the corner piece. The angle on the end of the apex seal keeps the corner piece oriented at the correct angle through spring tension.



Hope this helps. My 13B is an extreme full bridge.

[quote name='ArmyOfOne' date='Apr 4 2005, 02:03 PM']Some people just want the best of both worlds. If you go half bridge then you have better low end power. If you go full bridge then you will have better top end. This has nothing to do with the corner pieces. They will stay put as long as the bridge is centered on the corner piece. The angle on the end of the apex seal keeps the corner piece oriented at the correct angle through spring tension.



Hope this helps. My 13B is an extreme full bridge.


[/quote]





First,do you have any pics?I've read you posts,your one of ito's boys,..respect...

I had thought about the spring tension holding the seal in place but the flat potion that rides on the housing seem really thin,also if you radius the housing that support is even smaller.It may be enough though.Can you place the apex in backwards so the small piece is toward the secodary without a brige?I heard of people super glueing the two seal pieces together but dont know thier direct intention for this.



Thanks for the reply

Nick

good thread, how wide do you normally take the bridge? 2,5 to 3mm??

[quote name='skim41' date='Apr 5 2005, 05:26 AM']good thread, how wide do you normally take the bridge? 2,5 to 3mm??


[/quote]



As I said before no thinner than 3mm for a street driven motor. Your iron is shot!!! replace it.





They glue the ends on so that they do not have to worry about them popping out during assembly. The idea of putting the corner piece against the non bridged plate is actually common practice among high HP engine builders.

It s going to be replaced, just wanted to know the size of the bridge than.



Thanks.

So the actual bridge, shouldn't be any smaller than 3mm wide?

What about the extra port? How wide should it be for a nice reliable street car?



Here is some pics of a port I did on a Cosmo RE motor, the pic of the bridge isn't finished, just a rough cut.

I should add that this port was done with a Racing Beat template. Would it be possible extend the bridge port down further or is it like that for a reason?

[quote name='R.P.M.' date='Apr 5 2005, 10:31 AM']I should add that this port was done with a Racing Beat template. Would it be possible extend the bridge port down further or is it like that for a reason?


[/quote]

Don't go "down"...at least on the secondaries.

This just encroaches on the seal (corner? oil control?) path.

You can matchport the primaries to how low the secondaries go, but do not go further down on the stock secondaries.





-Ted

What I meant was can I take the bridge port down towards the oil pan more?

And how wide should the bridge be?