Does anyone got a good answer what this.....

[tom tom]

What is Twin Entry mean? For SW20 Twin Entry Turbo for example, why is it Twin Entry?

please help...

tom tom

[michael]

Multi-cylinder engines have ranges in which there is some overlap in the exhaust valve opening timing of one cylinder and its sequent cylinder. This can cause interference to the exhaust gas flow where the exhaust gases from the two cylinders join and results in exhaust energy loss in the turbocharged engine. Also, cylinders which have just finished the exhaust process are affected by the high back pressure of the exhaust initial process, so that high pressure gas remains behind more easily. This hinders smooth intake flow to the engine.

This exhaust gas interference is eliminated in the 3S-GTE engine by providing two exhaust ports, for cylinders No. 1 and No. 4, and for cylinders No. 2 and No. 3, together with two scrolls inside the turbine housing. This new design increases the engine's low-speed performance and acceleration response.

(Taken from Turbo magazine, May 1990)

[michael]

[raptor95GTS]

well that pretty much clears that up for good! Nice one mr C

[Alex_Dunn]

damn Mr C How many pictures of different car parts do u have on your pc??

[michael]

damn Mr C How many pictures of different car parts do u have on your pc??

That's not one of mine but I knew where to look

[tom tom]

Thank you for the picture and the information....

how many pictures of MR2 engine have you got?/