4AGE Bigport Cams. Difference between the 2 types?

[mattysshop]

think about what you just said..

a few degrees here and there, half a mm here or there.. makes ALL the difference..

honestly with cams, it's more about shifting the power band.. especially with a stockish setup.. as your head is coming off, and your getting it surfaced for the new MHG, why not see how much it would be to go .5 or 1mm OS on the valves, you would definitly notice that!!

[justin_es]

What do you mean by OS on the valves. Sorry :-)

[mattysshop]

Oversize

there are plenty of guys on here that have done mild and wild NA 4AGE's.. there are many ways to skin a cat so to speak.. OS valves is probly cheaper/same cost as buying some brand name cams (HKS/TRD/Toda etc) maybe even some of the cheaper Tighe/Kelford/Wade etc.. and i don't think the stock ECU would complain too much if you kept the stock cams in there with a slight oversize valve..

not trying to rain on your parade or anything, but what are you realistically expecting out of all this?

[justin_es]

By no means am i chasing power or torque.
If i was i wouldnt have sold the 8 to get this little thing.
I promised the wife id sell the 8 and get something cheaper to run and i have done just that.
Averaging at my best babying all week 14.3 in the 8 and in the rolla 7's even with occasiohnal high revving. I have cut my fuel bill in half without even trying to conserve fuel. Not to mention repair and service costs so far have been halved too.

Now what im after really is, this little thing due to its high revving and light weight and better handling isnt much slower than my old 8 already so im just looking for a few little pick me ups to get it on par with my old 8 and ill be happy with that as an everyday driver.

So lift compression up a little, very mild cam, intake, exhaust and extractors is all i wanna do to the motor really.
When it comes time to do the clutch ill get the fly machined and lightened and and yeah thats it really with a few of those little go fast bits it will easily be on par with my old 8.
And to top it off it already handles twice as good so makes it twice as much fun to drive already without going to things like suspension and brakes etc etc.

This is just my personal goal.
Quite acheivable and cheap really.

I just want a tidy but reasonably quick and toey everyday driver thats nice to drive :-)
Then after all this im just gonna fix little things up hear and there to keep it looking nice and original and looking good etc etc.


this all makes sense in my head haha.

[mattysshop]

that makes perfect sense, and you should be able to get a nice little daily package with those mods, very similar to what i am doing with me 89 S1 SX hatch..

but with ITB's..

[justin_es]

Over time i probably will do more to it but not really planning on it right now.
Just the above to get a little more poke out of it and ill be happy.

only thing i was considering is what else is cheap to upgrade while the head is off.
again not looking at spending a motza but seeing as though the head is off why not LOL.

[dnegative]

Fuck, so I went from 232's to 264's

Looks like I didn't
Just sold the cams I pulled out to Wiso and they measured bigger than his 232's so if you want to upgrade cams on the cheap go your going to have to find a set from a early MAP based Jap/ADM engine.

[trdee]

thats what a bluetop 4AGE is.... (although I understand some early model AE82 twinkys got the bluetop here too)

seriously though; the difference is fuckall. dyno variance from weather conditions will be greater than the power gain made from a set of 240deg cams compared to a set of 232s lol.

[dnegative]

thats what a bluetop 4AGE is.... (although I understand some early model AE82 twinkys got the bluetop here too)

Now that you mention it;
http://www.toyodiy.com/parts/p_J_198...CMQF_1302.html

13501‑16010 is the 240 duration early cam part number, my engine was ripped from a 86 AE82 twin cam (7 rib red top). So if your hunting for the bigger cams, find a early MAP based engine.

seriously though; the difference is fuckall. dyno variance from weather conditions will be greater than the power gain made from a set of 240deg cams compared to a set of 232s lol.

Might give you a few more hp under the lid but that's about it, that stock AE82 donk went noticeably harder than any locally delivered AW11 did so the MAP setup with the bigger cams is worth something.

[Hiro]

thats what a bluetop 4AGE is.... (although I understand some early model AE82 twinkys got the bluetop here too)

The majority of AE82 TCs sold here were MAP 3-rib bluetops. The general word out on the street is that only the Series 3 (which were essentially a runout model in 89) had the 7-rib

[dnegative]

I ripped the donkey out of a genuine 1 owner 86/87 AE82, had 90,000km on the clock. Engine is a 7 rib red top, had the big 240' cams, had the early style (fucking stupid) square injector and sensor plugs but I dropped it in my AW11 without issue. Once again I seem to defy the odds lol, its same with my AW11. Everyone swears blind that only the 1989 model cars came with electric mirrors yet I have them on my 1988. Same with the roof mount antenna, apparently they were only on series 1 cars but I have one. Then again, the car was delivered with a rare as rocking horse shit factory tri tone paint job which nobody knows anything about nor can you find photos of.

[oldeskewltoy]

232 cams close the intake valve sooner so they provide a bit more time for the piston to compress the air/fuel charge... allowing for a bit more bottom end - low end torque... flatter torque curve





The lift doesn't account for a whole lot of boost because the port(stock) tends to crap out somewhere between 6mm and 7mm of lift.



green and red lines are stock valves on stock ports