Turbo Manifolds - log style

[BlitZ]

I know for a turbo manifold, you would want tuned length runners..

however i have noticed some log manifold look quiet horrible in runner length design...

I have been looking at the older OEM D series log manifold which people use to turbo.. and am wondering why it couldnt be done to the b series log..

regards,
dan.

[BlitZ]

the runners on log manifolds are designed for neat packaging more than anything...the shorter uneven runners can sometimes help spool but will cost power compared to an equal length mani.

I know of an integra which ran 11's using a chopped up stock manifold, however it also needed running repairs on that manifold every few months and in the end it was binned.

was this a bseries log? or d series log?

[BlitZ]

It was a B series, sorry should have made that clear :)

thats the first ive heard of using the Bseries cast manifold..

Why cant it be used straight with an adaptor plate like what they do with the D series.. is there any reason why it needs to be chopped... :confused:

[bennjamin]

not sure mate, i never got a very good look at what they did and why they did it. How far down is the flange on a stock B series manifold?

about halfway off the block itself. But its 2 secondaries ~ which must be chopped or modded to fit a turbo inlet.
The D series one spoken of , was a 4-1 design and had quite short primaries. Look at the AUDM EK1 for a similar design (4-1)

[BlitZ]

about halfway off the block itself. But its 2 secondaries ~ which must be chopped or modded to fit a turbo inlet.
The D series one spoken of , was a 4-1 design and had quite short primaries. Look at the AUDM EK1 for a similar design (4-1)

oh i get ya.. b series.. 4-2-1
d series 4-1 with short runners