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QUOTE (Rusty @ Aug 16, 2009 - 3:39 AM)

>just wondering if you ment "
thats not true, the gen 4 is not a gen3 type with variable cam timing"
I know what your saying, (its just not a gen 3 head painted red) yes it is differnet, but I think what they were simply trying to say was its
similar to the 3gen but close up there are quite a few difference as you point out.
by all means post up pics really need more info on here, as there isn't too much floating around, (I can hopfully find the 3gen sizes etc to compare) one thing I really would like to know are the camshaft sizes (duration and lift)
and if you have any more info on the redtop beams ive missed please post it up

delusionz im not to sure, NA require it as this is how they make their power (which is why a 3gen can run up to +300deg cams)
yeah sorry i wasnt having a go at anyone, i'm really not like that its hard sometimes to not sound like that on a forum, i spend a lot of time correcting information about the beams

There is of course many similarities between the gen3/4 as in the bucket setup etc
The head i have here is actually from a blacktop beams, but they are the same casting, the only difference being the blacktop has some extra machining done in a couple of spots one of which is the exhaust side vvti solenoid, and the other difference is the machining on the last cam journal on the intake side, both of which is just left undrilled on the redtop, maybe if someone has a gen 3 head we can compare the differences. The only other head i have here is a gen 2 3s-gte which maybe someone is interested in comparing, if so let me know.
Here is a link to some of the tuning parts available, those are the best cams you can get for the redtop, throw out any idea's of using cams similar to those used in the gen3 or other 3s engines as the vvti makes for a very different animal, and you cant use blacktop cams.
http://www.beams-redtop.com/redmods.htmGen 4 3S-GE (Redtop) :
Power - 200ps (197bhp) @ 7000rpm
Torque - 21kg-m (152ft.lb) @ 6000rpm
compression ratio - 11:1
Cam duration (IN/EX) - 256°/244° ( timing is -2~43/78~33 thats the vvti range)
Cam lift (IN/EX) - 10.5mm/9.2mm (53/11)
Valve diameter (IN/EX) - 34.5mm/29.5mm
Throttle body diameter - 65mm
Injector size - 340cc (going by the book, flow testing puts them at 315cc)
Notes - VVTI
top of the head - i think overall it is a lot narrower because of the valve angle.

Intake side.

Exhaust side.

Underside.

another shot of the underside, the combustion chambers are about 20cc smaller than those of the previous gens

if you want more pics let me know, the rest of the head is sitting in a box.
This post has been edited by Edophus: Aug 16, 2009 - 6:35 PM