single pass!
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Joined: 04-25-07
Posts: 2,389
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From: Bohemia, New York, Long Island
Dual Pass = Only 2 passes through the manifold, coolant enters through both the stock nipples on the stock enplate, makes only 2 passes through the manifold, then exits through a 3rd niple drilled into the center of the stock endplate.
Single Pass = 1 pass through the manifold, coolant enters through an aftermarket enplate on the passenger side of the manifold, makes 1 pass through the manifold, and exits through the stock enplate nipples on the driver's side.
FYI, $400 dollars is a very good price for a single pass manifold.
Last edited by ralliartist; Mar 4, 2010 at 08:10 AM. Reason: Automerged Doublepost
hmmm wonder what kind of flow rates they saw (increase/same/decrease) and overall performance gained. If significant enough this could allow us to push the tvs/m62 harder and without temp issues
i am still wondering if for the time and money if the dual pass end plate + option b is worth it. i can get the end plate for $120 shipped and the option b for like $120. so that's $250 in the hole + half a day or more installing it. Gains?!?! worth it or no?
Joined: 09-29-06
Posts: 20,662
Likes: 216
From: Land of Freedom
i have my option b plus dual pass endplate plus smg fmhe still sitting in front of my tv here, but i would like to see what zzp has to say about this product ( not bashing for anyone keeping tabs )
might be worth it if you had a pump that could keep up with the required flow rate, i doubt the stock one could keep the pressure up high enough to keep the top cores filled with coolant.
I am really interested to see how they did this as it should require a new/modified intake manifold.
I am really interested to see how they did this as it should require a new/modified intake manifold.
The stock pump is perfectly fine as far as flow rate. I actually had to reduce the flow since the single pass gets rid of restriction and I needed to slow the coolant down a tad to help the exchange of heat in the manifold.
Some of you guys just spout **** out that gets others worried for no reason. It'd be better to do some research before talking. I haven't seen anything new pop up in a long time that hasn't already been answered on this forum.
Don't take that the wrong way.
Some of you guys just spout **** out that gets others worried for no reason. It'd be better to do some research before talking. I haven't seen anything new pop up in a long time that hasn't already been answered on this forum.
Don't take that the wrong way.
Joined: 12-30-07
Posts: 14,079
Likes: 197
From: NEPA
i am still wondering if for the time and money if the dual pass end plate + option b is worth it. i can get the end plate for $120 shipped and the option b for like $120. so that's $250 in the hole + half a day or more installing it. Gains?!?! worth it or no?



