Cut N Shut Tvis Big Port

[Jason]

My i dear every since i have decide to run a SC14 (if i can find one :dance: ) is to run a reversed FWD manifold.

I have a TVIS big-port i got with the sprinter spare parts. How much restriction would the 'flutes' be. Its just the manifold, no butterfly's. Would the spacer cause any turbulence. Would it restrict air flow that much. Would there be any point in changing over them from the crappy RWD manifold?

 

Because it seems that the Big port FWD non-TVIS are very rare :D ie only one bigport GZEs

Edited March 9, 2005 by Jason

[Jason]

no no, that not what i mean :dance:

 

Its just the manifold, that all, no butterfly's or any thing. But Ive herd that the divider (going through the hole thing) is restricted/turblie. Fact or fiction?

Edited March 9, 2005 by Jason

[Mr Revhead[RL]]

your after a sc14??? iv got one!

 

well my cuz has that hes asked me to sell...

 

 

let me know if ya keen

[Mr Revhead[RL]]

cost ya $300nz plus freight :dance:

[Jason]

OOOOOOOOOOO!

 

how good of condition is it, they seem so rare around here.

 

see if i have the bank!

 

could you find out the shipping?

 

PS you wouldn't have a GZE loom siting around would you?

Edited March 10, 2005 by Jason

[Mr Revhead[RL]]

afaik its in perfect working order.

 

 

 

what model gze?

[Jason]

I'm going to update all the old stuff like afm and iggy/distributer removal, so ill probably grab a Ae101. Do you have the computer? Ill probably run the supercharger off it and get an aftermarket later down the track.

 

does it matter running a 101 on a big port?

[Mr Revhead[RL]]

the looms can be different, plugs etc. so need to make sure you get all the bits from the same model.

 

head wont affect ecu, but small port is much better

[Jason]

Hmm OK, well i need to get new injectors because the ones i have look very blocked. Would pics help? Should i get bigger injectors? I was just thinking of just getting the same ones

 

 

Yerr Ive herd that small port is better but can't figure out why? The only conclusion i cam come to is that the small intake creates a faster moving air? But if its charged, wont it have a + attitude so it flows quickly into the cylinder any way since the cylinder is - or neutral? I can get how this works on a N/A but not forced.

Edited March 13, 2005 by Jason

[Mr Revhead[RL]]

its simple, bigger ports are good, too big ports is bad. and thats what the 4age bigports are, too big.

 

may suit a drag engine runnign 30psi but not a circuit/road car!

[Jason]

wait, so is that just it, the bigger volume drops intake velocity? is that all the problem is? sorry but i really need to know what actually happens so i can fix it... :P

Edited March 13, 2005 by Jason

[irokin]

yea it drops the intake velocity and believe it or not more turbulence is better (which is why some big diesel heads have a swirling mechanisim in the port)

[Mr Revhead[RL]]

yup thats it

 

not turbulance, swirl, theres a difference :P

[Super Jamie]

4 horsepower at the wheels, probably over 5 at the flywheel

*nod*

[Jason]

does any body have a recommended weld shop for this?