Sävar Turbo Site

Why? I had planned to try that with a new manifold for a big turbo RB26 Maybe the reason why the conventional spool valve is not used often is because it chokes the engine to much at low rpm and cannot spool the turbo with enough efficiency so you lose to much torque trying to create torque. This i...

BW type is only type that might work , DPUK type that some americans also make is the stupidest thing I have ever seen.
Maybe 15 years ago almost every truck racer in Finland tried "spool valve" but there is a reason no one is using it anymore.

I would use 2x DHLA Dellortos , although Lotus Esprit Turbo came in 1980 but I think DHLA basic version was before 1974 ?

The turbine extracts power in two areas. Inducer (radial turbine) and Exducer (axial turbine) it is easy to think that each of them is giving 50/50 to the shaft, but that is not true. All of the working range the power from each of them is different with the radial one making most at spool and the ...

I reckon that you have the Scania 97x92mm 12 blade. There is a Cummins 100x86.5mm 11 blade that works good, especially if you try it with a housing for 92mm, it does not loose that much spool and gives a really noticeable peak at max. Of course, you can benefit from even bigger turbine wheel, as lo...

It would be nice if you could tell what was done to the turbo? Turbo size is most important factor on theese engines and makes a lot more than porting the head. But most important of all is management of diesel supply. Looking at the boost gauge on your clip, says that you are not "giving all ...

What has been done inside the engine? I have ported some pulling heads and have just done a set of Perkins V8 heads and a huge 6 cylinder, IH I belive, Erland Nothing. Scania 4-valve heads look quite good , separate intake ports , nice SSR. Ofcourse they are raw from serialproduction so some finish...

This summers competitions , with modified turbo and added timing and fuel after dyno.

https://youtu.be/NOXkGMHUioA

https://youtube.com/shorts/X7nmLwACIAY?feature=share

Wastegates were used in plane engines from the beginning. Manually by pilot , to compensate for altitude.

Here is some data about same engine N/A , turboed and turbo with restrictor. https://youtu.be/KdXaiZhJMnQ

Darin Morgan says supersonic flow in the engine can only happen when it detonates. https://youtu.be/qhsTQn0uUOQ

Widmer works now at Mast Motorsports and designs Honda cylinder heads.

LPG injection is about the only extra injection you can use with diesel because it is not self igniting before diesel ignites. But those chinese Bosch plungers are quite cheap and many have changed them themselves so that would be my choice. Highest hp is made with 11mm plunger, bigger can not take...

Locked the turbo of my testmule , 13 litre Iveco with HE500 VGT-turbo. 480hp original , at maybe 2 bar boost , so without boost should have 160 hp. Dont know how well 160hp should move 7500kg but didnt feel too sluggish. Backpressure gauge started to move close to max rpm , maybe 0,1bar , at lower ...

Här skriver de 2000 Psi (138 Bar) som "safe nivå" . https://www.eng-tips.com/viewthread.cfm?qid=408478 Enligt mig så kan man ha mycket mera, men är det ok att vi räknar på 138 bar och att maxtrycket uppträder vid 20 grader efter ÖD? Honda McLaren F1 V6 hade 179 bar 17 grader efter TDC på ...

20210620_164940.jpg 20210620_165948.jpg Locked the turbo of my testmule , 13 litre Iveco with HE500 VGT-turbo. 480hp original , at maybe 2 bar boost , so without boost should have 160 hp. Dont know how well 160hp should move 7500kg but didnt feel too sluggish. Backpressure gauge started to move clo...