are there any 'performance' or lighter/stronger valves available for a 5sfe.
other than cams, whats available for the head?

Anything? Springs?
Are the 3sge/3sgte compatible?

why?

on a mostly stock motor, theres no reason for valves.

but yu CAN port the head. polish combustion chambers, exhaust runners, etc.

i think i remember reading somewhere that Supra 2JZ valves have the same length stem, they are basically the same as an oversized 5S-FE valve.

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can anyone confirm this? if the stock fit should the aftermarket one fit too?



@stephen.
im not really doing this soon just thinking about it. "building my knowledge" also this guy i met an this meet with a camry said he had those so it got me thinking

i just remember reading a thread on another forum that the Supra valves were almost identical to another engine, i cant remember if it was the 5S-FE or not. ill see if i can find it

ok i found the thread i think i was thinking of. its on MR2oc.com the author actually is recommending 2JZ-GTE valve springs for the webcam 294 cams.

Im about the pull the engine out of my Supra, the head is being done so i can measure the valves and let you know. i dont have any 5S-FE valves to compare to but if you have your head apart, measure the over all length, and diameter of the valve face and who knows?

i would really appriciate that... just one problem: how to u take them out? lol i have my old head sitting in the garage doing nothing so i can check it with that, any advice on how to do so, i got the shims out thats it lol

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link?
i've never seen aftermarket springs recommended for the webcams 294's...webcams dont recommend them for those cams.
besides, before you get to O/S valves on a 5s head, there are lots of other things you can do to make lots of power before going for the small gains the larger valves will get you.

i mean ya, if its already apart, and you have the extra cash, it may be somthing to think about..if your looking to make BIG power with a 5s head..but that wouldnt even be a thought in my mind without thinking about lots of other things like manifolds, turbos, engine control, LOTS of headwork..ect...lol
if your looking to make n/a power (lol), google mrturrari, or research his posts on celicatech and mr2oc.

or..... a BEAMS head on a 5sfe bottom end built for 9k rpms.... EPIC


since we're thinking via text here...

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That sounds fun lol...

Btw I know vvt-I is "variable valve timing" hit what does that reall mean and how does it give more power?

Toyota VVTi

to get the valves out is really simple. set the head down on a flat surface. I use a 14MM deep socket with a 1/2 to 3/8 reducer and a 1/2 drive 3" extension. i tape them all together so its nice and solid. then smack the retainer with a mallet. the keepers will pop right out. assembly is another story. i made a special tool to compress the spring and i use a small pic to drop the keepers in.

http://mr2oc.com/showthread.php?t=308405

the second post

Apperently I still dont have access to the link...I registered even since thank link and still don't have permission from moderators...


Anyways...if not too much to ask,
Can u copy paste the info here or print screen the pages?
Thanks