My sleeper

[Greg_S]

stunning project. The exhaust manifold is impressive!

[V6quattro]

What oilway's are you closing?

[Wizard-of-OD]

One of the cylinders is shared.

I can see that , still does not beg the question as to why?

Please do not take this as criticism and I appreciate the enthusiasm but this was tested in the Volvo community several years ago and did nothing for spool time considering the orientation of the pistons? At no given time are 2 pistons ever @ TDC like an inline-4 so twin scroll is pointless on an inline-5.

You would have been better off with a 5 into 1 merge collector and running one of the turbine inlets through a flapper boost controlled solenoid like this:

[hammer]

By my Design is less backpressure than this one you Post with the flapper.
Dont no if it work fine, but i will See it in three mounths

[hammer]

Closed the oilways from the lifters, because the cam had so high Lift that it will be opend the canals.
Sorry my Bad english, Hope you understand it

[Cordoba16vt]

Can you explain better as to why you closed the oilway from the lifters? What exactly do you mean. And pls show a photo.

[Wizard-of-OD]

By my Design is less backpressure than this one you Post with the flapper.

...thats the whole point. Reducing a twin scroll A/R from X to approx X/2 and then when desired bar/rpm is reached , the flap opens bringing A/R back to X.
Twin scroll by design only works well on paired cylinders. There is no Triple entry turbine housing (that I know of) so Skyline/Supra folk rely on a 6-1 merge collector followed by a flapper valve. Inline-5's suffer the same fate. Inline-4's however do not.
Would love to see back to back dyno's though , however , I am skeptical they will be significantly different.

[hammer]

I will see[emoji6]

[hammer]

Can you explain better as to why you closed the oilway from the lifters? What exactly do you mean. And pls show a photo.

It saves oil. When you have lash caps you dont need the oil from this canal.


on weekend i can make you a Photo with cams in the head

[SteveH]

I guess there's plenty of oil flowing past the solid lifters so you don't need the pressurised feed.

[hammer]

Yes there is enough oil from the cam bearing

[hammer]

Here a cheap version of an intercooler. Had 2 Old intercooler from a tdi, s4 and welded them together

[hammer]

Already installed the cams
In 4.25mm and ex 3.75mm at tdc

[hammer]

[hammer]

Electric steering wheel from a Opel corsa