4age valves in 4efte head? and cruise valve springs

A

adam ep

Member +
anyone got info on some of this headwork i want to get it done...much difference??

or any other head work recomendations?

is there any other valves out there? also anyone know where i could pick up some cruiose springs?? :)

thanks
 
350ep70gr

350ep70gr

Member +
there is no direct fit oversize valves for the 4e head. This job always need a fair bit of machine work.
I have use supra valves 1mm oversized and other custom made 1,5 mm oversized.
If you thinking going this route ask for a 3,5, multi angle job and full port and polish job.It is also other jobs that can be done to the head to improove its performance.
Before attemting anything make sure it is a healty head you will use as a base.
Cruise springs can be found here at the traders section.
If you need any guide for a diy job or any other details pm me and i will try my best.
Have a look here to get an idea..It was at early stages but you can see what is envolved.
http://s723.photobucket.com/albums/ww231/350ep70gr/starletgtturbo1 head/

Chris
 
A

adam ep

Member +
350ep70gr said:
there is no direct fit oversize valves for the 4e head. This job always need a fair bit of machine work.
I have use supra valves 1mm oversized and other custom made 1,5 mm oversized.
If you thinking going this route ask for a 3,5, multi angle job and full port and polish job.It is also other jobs that can be done to the head to improove its performance.
Before attemting anything make sure it is a healty head you will use as a base.
Cruise springs can be found here at the traders section.
If you need any guide for a diy job or any other details pm me and i will try my best.
Have a look here to get an idea..It was at early stages but you can see what is envolved.
http://s723.photobucket.com/albums/ww231/350ep70gr/starletgtturbo1 head/

Chris
Click to expand...

ya i know my head will have to be machined..the vavle seats will need to be chamferred to suit the valve size..ya if i am goin this route ill be also using 5efhe cams and the cruise springs.... it should make a good difference..

did you notice much difference in your head? did you use standard springs, cams? also how much did it cost for you..pm me the price if you want.. :)
 
350ep70gr

350ep70gr

Member +
adam ep said:
ya i know my head will have to be machined..the vavle seats will need to be chamferred to suit the valve size..ya if i am goin this route ill be also using 5efhe cams and the cruise springs.... it should make a good difference..

did you notice much difference in your head? did you use standard springs, cams? also how much did it cost for you..pm me the price if you want.. :)
Click to expand...

It made a fair bit of a difference even on the little ct9 back to the days.
Cost me very low as i did all the machine job myshelf and only buy valves and springs.

Chris
 
A

adam ep

Member +
350ep70gr said:
It made a fair bit of a difference even on the little ct9 back to the days.
Cost me very low as i did all the machine job myshelf and only buy valves and springs.

Chris
Click to expand...

im going to my local machin shop now to see what the cost will be... :)
 
A

adam ep

Member +
hmm very nice...what are the valves originally from? my head just needs to be boored out 1.5mm on all seats and thats it? what about the valves guides??
 
H

hkspower

Member +
thay originally are made for 4e head . thay are custiom made for the spec we need. no extra work on them just fit perfect. yes mate just opin about 1.5-2mm the and thats it.. the guides we allways used them with this valves for better resalts.
 
H

hkspower

Member +
we had 20bhp on the same engine just fit the valves but it was on std cams .. it will gain more if it has biger cams it's are the next step on it...
 
H

hkspower

Member +
thay will make allways some gain but no one can tell you when and by how much. it depends in many thinks engine setups ,boost type of head ports. but you will have gain and better head flow 110%.
.
 
A

animal gt

Member +
hkspower said:
thay will make allways some gain but no one can tell you when and by how much. it depends in many thinks engine setups ,boost type of head ports. but you will have gain and better head flow 110%.
.
Click to expand...

but can i ask why people want all that hassle?when the standard bits work fine,like what sorta power are people looking for?when people have made 400+ on stanard valves with no problems
 
HYBRID

HYBRID

Super Moderator <a href="http://www.toyotagtturbo.
animalgt said:
but can i ask why people want all that hassle?when the standard bits work fine,like what sorta power are people looking for?when people have made 400+ on stanard valves with no problems
Click to expand...

every little bit helps mate, there is alot more to consider in every equation, starting from compression, all the way up to the porting and polishing.. if you see a dyno graph of a car without the valves, and one with the valves installed, you will see that the torque map is increased alot, helping flow more in and out, giving you faster acceleration...

its like a plenum, some thing its needed others do not, all i can say is since when mine was installed, it made a very big difference mid and top end.

Just because something isnt a neccessity when upgrading ur engine, it doesnt mean the engine wont benefit from those mods.

thanks
kon
 
B

bongskag

Member +
4a-ge valve springs fit, does anyone know if there stronger than the 4e springs ? im thinking the 4a-ge was designed for higher revs and valve lift, this must have been looked into,
 
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