Porting intermedate housing
#1
I am rebuilding/porting my streetported (previous owner) s4 tII. I realized that the intermediate housing wasnt ported on either side. Are these supposed to be ported? I thought you ported all ports in the engine. sorry for the noob question but it is my first rebuild.
thanks,
spencer
thanks,
spencer
#2
Originally Posted by driftin86fc' post='921029' date='Apr 26 2009, 05:20 PM
I am rebuilding/porting my streetported (previous owner) s4 tII. I realized that the intermediate housing wasnt ported on either side. Are these supposed to be ported? I thought you ported all ports in the engine. sorry for the noob question but it is my first rebuild.
thanks,
spencer
thanks,
spencer
Depends on what you want from the engine! I'm installing a half bridge, thats a street port on the primary and bridgeport on the secondary.
You do need to think about the big picture. If you have different porting, primary/secondary, then you need separate pimary/secondary control. The big webber 48's I got for my motor will not work well with the half bridge, so I need to go a 4 barrel carb route. For the half bridge, the theory is to keep the low end performance, while getting most of the benifit of a bridge port at the top end.
The previous porting may have been very specific or may not have been done by someone who knows what they are doing!
#3
Originally Posted by edsrx3' post='921040' date='Apr 27 2009, 11:31 AM
Depends on what you want from the engine! I'm installing a half bridge, thats a street port on the primary and bridgeport on the secondary.
You do need to think about the big picture. If you have different porting, primary/secondary, then you need separate pimary/secondary control. The big webber 48's I got for my motor will not work well with the half bridge, so I need to go a 4 barrel carb route. For the half bridge, the theory is to keep the low end performance, while getting most of the benifit of a bridge port at the top end.
The previous porting may have been very specific or may not have been done by someone who knows what they are doing!
You do need to think about the big picture. If you have different porting, primary/secondary, then you need separate pimary/secondary control. The big webber 48's I got for my motor will not work well with the half bridge, so I need to go a 4 barrel carb route. For the half bridge, the theory is to keep the low end performance, while getting most of the benifit of a bridge port at the top end.
The previous porting may have been very specific or may not have been done by someone who knows what they are doing!
webbers are far far easyer to work on and tune in then a holley as well.
now for the portin. ya i always when i port a motor do all intake ports , but i not always port the exhaust ports. that depends on what rotor housing i am using in the build.
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