cams for na stock 4age

[pen15]

hi all iv got a question for all you tech gurus whats the longest duration cam you can put into a 4age running a stock ecu and head (jdm motor)
i have heard of a 265 being the biggest you can run on a stock ecu by Sprinterman68 himself but i called camtech today for an inquiry and they said that the 265 was the standard duration on the 4age im a little lost so this would be a great deal of help

my straight up question is whats the biggest cam i can just throw in my 4age and run btw i will be getting some adjustable cam gears so i can dial them in also getting a good exhaust system to suit i also do not care about how lumpy it is because its not like im gonna be driving it slowly cheers all

[trdee]

standard duration on bluetop bigport is 240deg. standard duration on all other 16v is 232deg, and a little less lift.

I have heard that 264 is the biggest you can get on the stock ecu, but then i've heard of people using 27x deg cams before too... so who knows. you should be using at least a piggyback to get the most out of your cams anyway

[aw1123q]

Having cams, and cam gears would it be more better running a full ecu ? i know piggy back ecus have their limitations when it comes to tunning.


Just a little off track whats a good bang for buck full ecu for a 4age? And please dont say Ems lol

[sprinter86]

Well i dont know the biggest possible cams you can use, i know that a recent customer of mine had 282's in a stock smallport with stock ecu, and it ran, though it was lumpy and rough at idle, as soon as you get going it ran beautifully!

I would definitly say that you will never get the most out of your cams with the stock ecu, though it will probably still run.

hopw this helps!

[oldeskewltoy]

The stock ECU has a rev cut @ 7500(+ or-) rpm

Since you have a rev cut @ 7500, there is no need for a cam that makes its peak power above this rpm point....

....I'm SURE I'll get arguements.....

Stock cams are 240, or 232. The 240 duration cams make power to 6600 rpm. A bit more rpm can be gained with a bit of cam timing.



The new*, or current HKS timing sheet states that when you use their camshafts you should have valve spring capabile of running upto a certain rpm range. The sheet states 8000 rpm for a 256 cam, 8300 for a 264 cam, and 8800 for a 272 cam. Thinking a bit out of the box(OR in my humble opinion...), HKS is likely fluffing those #s to protect against over rev, or misshifts.... So I'd say peak power for these cams is likely 200-500 rpm below the valve spring requirement.

*Part numbers:
2202-RT093 Toyota - 4A-G(Z)E - Intake - 256 degree - 8mm lift
2202-RT094 Toyota - 4A-G(Z)E - Exhaust - 256 degree - 8mm lift
2202-RT095 Toyota - 4A-G(Z)E - Intake - 264 degree - 8.1mm lift
2202-RT096 Toyota - 4A-G(Z)E - Exhaust - 264 degree - 8.1mm lift
2202-RT097 Toyota - 4A-G(Z)E - Intake - 272 degree - 8.1mm lift
2202-RT098 Toyota - 4A-G(Z)E - Exhaust - 272 degree - 8.1mm lift

the older** HKS cam choices had 6 cam choices for the 4AGE. a 248, a 256, a 264, a 272, a 288, and a 304.
** Part numbers:
2202-RT030 Toyota - 4A-G(Z)E - Intake - 248 degree - 7.45mm lift
2202-RT031 Toyota - 4A-G(Z)E - Exhaust - 256 degree - 8.35mm lift
2202-RT032 Toyota - 4A-G(Z)E - Intake - 264 degree - 8.35mm lift
2202-RT033 Toyota - 4A-G(Z)E - Exhaust - 272 degree - 8.35mm lift
2202-RT034 Toyota - 4A-G(Z)E - Intake - 288 degree - 8.30mm lift
2202-RT036 Toyota - 4A-G(Z)E - Exhaust - 304 degree - 8.30mm lift

Back then HKS only made one cam per duration... you used it on intake and exhaust



So.... what does all this BS mean? In my humble opinion... you might be able to run 264 cams... but, your peak hp is above the factory rev cut... SO... I'd say a 256 cam is about all you can run while using a stock ECU.

[Hiro]

The stock ECU has a rev cut @ 7500(+ or-) rpm

Since you have a rev cut @ 7500, there is no need for a cam that makes its peak power above this rpm point....

7500rpm is before redline, and I'm sure just about every 4AGE owner has taken their car to redline (I know I have)

[X kyle X]

Id say 256 degree would be a nice little upgrade!

[Panda_Tureno86]

I got to agree that running 256 degrees cams are a VERY GOOD option for normal street driving.
I have just driven a Sprinter running a bigport with 256 degrees EXHAUST cam, the motor's being rebuild, running standard piston..... and a 4.7 final gear.
I can say that the car feels like its pulling constant power and its reliable.
that sprinter is running a stock ECU and it was idling fine, almost like a stocker.
But definitely more torque.

[takai]

7500rpm is before redline, and I'm sure just about every 4AGE owner has taken their car to redline (I know I have)

USDM ECUs are different, they are redlined earlier. Probably tuning for the crappier fuel.

You CAN run 308s on a stock ecu stock engine. Its laughable though, produces 33kw until 4500rpm and then all of 42kw afterwards.

[Hiro]

USDM ECUs are different, they are redlined earlier. Probably tuning for the crappier fuel.

There are times when I am so glad I don't like in the US.....

[legend]

i recommend the 256 cams and dial them in with the camgears but u should compliment cams with a decent exhaust system ,CAI, etc to get the real benefits out of them
is the motor std and how many km's has it done also what lift on the cams are u planning to run etc 8.1mm

[pen15]

the motor is pritty fresh low kms the engine will have 4-2-1 extractors and a high flow cat exhaust 2 inch with 1 resanator and a sports muffler iridium plugs and trd leads the intake is also a cold air intake with k&n filter im really looking for just a set of cams where i can just throw them in so stock lift just the longer duration but 265 is what im hearing so ill go down that path also if it helps the motor done a 76.0 on the dyno in the last car it was in (just called the last owner) cheers all but if you think i can run bigger cams than 265 tell me please

[zorro]

Check this Corolla on Ebay it says it has 276 degree crow cams:

http://cgi.ebay.com.au/ws/eBayISAPI....MEWA:IT&ih=015

[Dark Motive]

hey mate I'd recommend the 256/ 265 cams as most here-

I drove a sprinter with 288 dg cams and stock ecu and mate all i can say is if you like a tough (read: rough...) idle then these are the best. Just hope you dont want to go anywhere... with a slight incline. The drop in power (and lack of top end too actually) is seriously not worth it unless you run a full/ piggy back ecu and can use them.

[pen15]

ok iv got a set of cams in mind that i can get my hands on they are at 8.35mm lift can i use those on my stock head they are at 265 deg on both shafts what say you all?