equal length manifold

[ramses974]

what do youthink about it?? pro & con??

my last set up when i was on 5e was the BYP equal lenght manifold...but with ly actual 4efte i decided to modify the 5EFE manifold to atach the TDO4 in a top mount manifold...

now with my TDO4H greddy i hesitate to use the BYP manifold ...

 

[ramses974]

:argue::argue: strange no body want to help me...

 

[12345678]

i take it BYP is a brand of manifold?

 

[ramses974]

i take it BYP is a brand of manifold?

no it was a manifold for a T3 T4 turbo made by back yard production

take a look

 

[12345678]

looks to be well made, although given the internal volume of that mani i would say it would have a lot of lag.

an equal length mani will be good for top end power, but one with a low internal volume will spool a lot quicker.

i'm not 100% sure what it is that you are asking?

 

[Starbus]

That manifold will probably hurt spool a little but this won't matter as your using a big turbo anyway as its a t3.

Equal length is always better IMO.

The internal volume of that manifold will probably be about 3 litres per runner, 12 litres total. Given you'll probably move about 500CFM on a t3 turbo, thats and 1CFM is about half a litre a second. I doubt it would make any difference to spool (actually transient responce) in that respect. There is of cause the drop in temperature. But velocity is much more important IMO. I'd have made the manifold a different way which would have probably picked up about 300-500rpm in spool.

Regards
Ricky

 

[ramses974]

That manifold will probably hurt spool a little but this won't matter as your using a big turbo anyway as its a t3.

Equal length is always better IMO.

The internal volume of that manifold will probably be about 3 litres per runner, 12 litres total. Given you'll probably move about 500CFM on a t3 turbo, thats and 1CFM is about half a litre a second. I doubt it would make any difference to spool (actually transient responce) in that respect. There is of cause the drop in temperature. But velocity is much more important IMO. I'd have made the manifold a different way which would have probably picked up about 300-500rpm in spool.

Regards
Ricky

i am not running now the T3 !!
iam with an 4efte now instead of the 5e... and now my turbo is GREDDY td04 H

 

[ramses974]

looks to be well made, although given the internal volume of that mani i would say it would have a lot of lag.

an equal length mani will be good for top end power, but one with a low internal volume will spool a lot quicker.

i'm not 100% sure what it is that you are asking?

that is exactly what i was thinking... i am affraid i will have lag...

 

[ramses974]

any advice for pro & con?

 

[12345678]

a pro is great high rpm power
a con is lag, and lots of it

another cheap option would be to use the 5e manifold and weld a td04 flange on to it - you have an acceptable balance between good flow for high rpm power and low internal volume - for quick spool

 

[12345678]

That manifold will probably hurt spool a little but this won't matter as your using a big turbo anyway as its a t3.

Equal length is always better IMO.

The internal volume of that manifold will probably be about 3 litres per runner, 12 litres total. Given you'll probably move about 500CFM on a t3 turbo, thats and 1CFM is about half a litre a second. I doubt it would make any difference to spool (actually transient responce) in that respect. There is of cause the drop in temperature. But velocity is much more important IMO. I'd have made the manifold a different way which would have probably picked up about 300-500rpm in spool.

Regards
Ricky

i think a key point to remember is first you have to fill the mani, then you have to compress the air in it in order to drive the turbo.
when you have twice the volume, it will take twice the time to fill, and twice as long to compress it.
i'm not saying that it will take 4 times longer to generate boost, but there is an exponential relationship there which i would imagine is related to flow or kinetic energy of the exhaust gas

 

[ramses974]

a pro is great high rpm power
a con is lag, and lots of it

another cheap option would be to use the 5e manifold and weld a td04 flange on to it - you have an acceptable balance between good flow for high rpm power and low internal volume - for quick spool

this is what i have done with my actual set up with td04...
now i will do it again with the td04h greddy ...