whats the actualy difference between the 2 blocks in question....both would be TII's lets say......i know there are differences but how can u tell if it was jus two blocks sitting there on the ground....

 

The easiest way to tell is that the s5 doesn't have a place for the EGR valve on the intermediate housing. Also, the s5 has a hole for the knock sensor above the trailing plug as detailed here: http://www.banzai-racing.com/faq_housings_ID.htm

 

thanx man thats all i needed to know...knock sensor be on both housings correct?

 

I believe so, yes.

 

S4 will have a mechanical OMP and the S5 will have an electrical OMP...

The water pump housing where the neck bolts to are different. The S4 has to holes to bolt the neck while the S5 has 3 holes.

 

S4 J-specs also don't have EGR.

S5 TIIs don't have the twin scroll actuator.

The wastegate arm is bent.

The turbo flange looks like a standard T4 flange instead of the proprietary S4 flange.

The intake manifold runners are bigger then S4.

Electrical metering oil pump.

Pulsation damper integrated into fuel rail. Fuel rails are steel tubes instead of aluminum castings.

Dual TPS.

Off the top of my head that's all I can think of...

 

excellent
and what about weight would u guys say that a fully dressed 13BT with tranny is around 450 lbs ?

 

I think I saw that the longblock weighs 350 pounds or so.

 

the long block by itself or with all stuff on it?

 

I dunno, but I assume its with everything on it. I'm almost certain the shortblock weighs around 200 pounds and I can pick up the tranny with no problems so I don't think the tranny weighs 150 pounds.

 

There's only one knock sensor. On S4's it's on the centre plate under the oil filler, and on S5's it's above the trailing plug on the front rotor housing. This is the easiest way to identify a nude block (i.e. no accessories).

 

S5 has extra reinforcement at the rear iron dowel area just under the oil filter stand. Also no part number stamp on top of rotor housings.