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Location:
Terrigal
Registered:
May 2002
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AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Tue, 11 January 2005 23:02
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Hi all, just thought this was interesting.. My girlfriend Meg has a AE86 with the bigport 4age engine and I have one with the smallport 4age engine.
Not condoning this in anyway of course!... But this morning we found ourselves lined up at a set of lights that leads up Kariong hill (some very nice corners and gentle uphill).
Anyway, there is NO difference at all with the 2 different versions of the 4age. Both were neck & neck through every gear, was quite unbelievable that 1 of the cars didn't even slightly drop back or pull away.
The smallport is running a much more restricted exhaust so maybe that would add a couple of kW to it.
Cheers
Joel
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Registered:
February 2003
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Wed, 12 January 2005 04:10
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ahhh the ol racing with the woman.
sometimes i find myself lined up with my girl in her lil civic, when the lights go green and it's on, i try to let out the other side of me, keeping it nice and close, and fairly tamed......little does she know i'm only half on boost 
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Location:
Adelaide
Registered:
January 2004
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Wed, 12 January 2005 07:51
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Theres gotta be a difference between the two..
ive got a smallport and most of my friends have bigports. all of our motors are stock and i seem to beat them most of the time in a straight line.
not only that tho, the powerband of the smallport is better.
mebbe ur gf is just a better drive than u?  lol
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Location:
Sydney
Registered:
December 2004
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Wed, 12 January 2005 08:34
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the bigport will always sound better 
hmmmmmm bullet
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Location:
sidoonie
Registered:
January 2004
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Thu, 13 January 2005 04:19
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my smallport sounds better than all the other bigports ive heard around the streets of lekemba (twinky fest)
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Club Member
Location:
sydney
Registered:
May 2002
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Thu, 13 January 2005 10:26
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In my limited experimental experience  , the bigport will usually walk over the smallport from a standing start to the middle of 2nd gear ( in AE86 ) then from about 80kmh on the smallport should pull away at about 5-10kmh faster to the top of the revrange thru 3rd and 4th
which is one reason i used to love racing steve and rod (when the show car had the 4AG ) because I was able to clean both cars up in our standing start practices. On the freeway it was a totally different story.. rolling start from 3rd gear the smallport totally cleans up a big port.
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Location:
Terrigal
Registered:
May 2002
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Thu, 13 January 2005 21:56
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Hmm interesting.. Might need to put that theory to test as we only made it to somewhere around 3rd gear.
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I supported Toymods
Location:
sydney.au
Registered:
August 2002
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Fri, 14 January 2005 07:25
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with a tuned ecu the smallport will always rock over a tvis bigport
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Club Member
Location:
sydney
Registered:
May 2002
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Sun, 16 January 2005 10:05
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your assuming the bigport still uses TVIS... with quads its a whole different ballgame .... have a closer look at at FA setups.. gee I wonder what head they used
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I supported Toymods
Location:
sydney.au
Registered:
August 2002
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Sun, 16 January 2005 15:25
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buhhhh of course a bigport head is better for high duration cams
more air more flow more power
with quads on either head its going to be much different..
id say that the best head to use would be a ported smallport into not-so-large bigport style ports
even with 308° - 316° cams the bigport head has less than 0 torque below 5000rpm
smaller ports (to a degree) would help with initial torque under 4k rpm
but then again, what kinda use for what kinda engine yeah??
a bigport would suit a 10000 rpm FA 4ag with silly cams that spends its life at constant 9000~ rpm for 20 laps for sure... but what road car gets to enjoy that?
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Location:
Melbourne
Registered:
January 2003
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Fri, 21 January 2005 00:59
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keep an eye on our victorian dyno day. Maybe results will show the clear winner .
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Location:
Melbourne
Registered:
May 2004
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Club Member
Location:
sydney
Registered:
May 2002
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Sun, 23 January 2005 08:25
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for turbo you ( or should i say I ) would use a bigport, bigger ports = more volume = more power in F/I setups
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Location:
Melbourne
Registered:
May 2004
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Sun, 23 January 2005 09:03
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Yeah michael thats what i was thinking but do you think if i used the small port head that there would be any real affect on lag and response?
Jezza
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Club Member
Location:
sydney
Registered:
May 2002
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Mon, 24 January 2005 08:08
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well that hard to answer as it will depend on all the variables like what turbo you use, size and length of IC plumbing and even the IC itself can have an effect from what i understand.
In short figure out what you want the engine to do, then talk to people who really know there shit ( about the only ones id talk to at toymods would be people like yellorolla and Justin GT4 ) maybe a race car builder and use thier knowledge to put together a package that does what you want. generally a smaller turbo will give you a smoother response thru the whole range, bigger turbo will give lag but has a bigger final punch.
you could also talk to Peter Hindricson,his new package sounds very good, I havent been in the car myself but talking to him the other day he mentioned the response was very good with the turbo hes using.
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Location:
Melbourne
Registered:
May 2004
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Mon, 24 January 2005 08:25
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| IRA11Y wrote on Mon, 24 January 2005 19:08 |
you could also talk to Peter Hindricson,his new package sounds very good, I havent been in the car myself but talking to him the other day he mentioned the response was very good with the turbo hes using.
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Do you have some contact details for Peter?
Cheers mate
Jezza
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Club Member
Location:
sydney
Registered:
May 2002
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Tue, 25 January 2005 04:50
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uhmm actually i cant remeber if hes registered on here, i know he looks here occasionally, i usually catch up with him at events more than anything else.
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Location:
ghetto area 2745
Registered:
November 2003
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Wed, 26 January 2005 02:17
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| IRA11Y wrote on Mon, 24 January 2005 19:08 |
well that hard to answer as it will depend on all the variables like what turbo you use, size and length of IC plumbing and even the IC itself can have an effect from what i understand.
In short figure out what you want the engine to do, then talk to people who really know there shit ( about the only ones id talk to at toymods would be people like yellorolla and Justin GT4 ) maybe a race car builder and use thier knowledge to put together a package that does what you want. generally a smaller turbo will give you a smoother response thru the whole range, bigger turbo will give lag but has a bigger final punch.
you could also talk to Peter Hindricson,his new package sounds very good, I havent been in the car myself but talking to him the other day he mentioned the response was very good with the turbo hes using.
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if this peter guy is who i think he is "light blue silver turboed 86" that is 1 fit car my friend
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Location:
Rockhampton QLD
Registered:
July 2004
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Thu, 10 February 2005 08:08
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would a jap(96kw) bigport be any different?
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Location:
Melbourne
Registered:
March 2003
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Fri, 11 February 2005 14:46
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all the rwd big port are 96kw. Nfi where the 86kw myth came from but some how it stuck. ae82 4age are 86kw but they are fwd motors as are mr2 motors.
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Club Member
Location:
sydney
Registered:
May 2002
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Sat, 12 February 2005 05:41
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Australian market ecu's only came in FWD vehicles and are slighlty different tuning to RWD 4age hence they produced the lower output of 86Kw, same as the californian emmisions tuned ecu's
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Location:
Adelaide
Registered:
January 2004
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Sat, 12 February 2005 15:16
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| IRA11Y wrote on Sat, 12 February 2005 16:11 |
Australian market ecu's only came in FWD vehicles and are slighlty different tuning to RWD 4age hence they produced the lower output of 86Kw, same as the californian emmisions tuned ecu's
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So if you get a jap bp ecu and put it on your aus bp, will that bring it up to 96kw? is it the only difference between the two?
btw i swear to god there is a difference between the bigport and smallport. If anyone has a standard bigport i rekon my standard smallport will beat it in a straight line, lets do some testing
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I supported Toymods
Location:
sydney.au
Registered:
August 2002
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Sun, 13 February 2005 00:38
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| Arch wrote on Sun, 13 February 2005 02:16 |
| IRA11Y wrote on Sat, 12 February 2005 16:11 |
Australian market ecu's only came in FWD vehicles and are slighlty different tuning to RWD 4age hence they produced the lower output of 86Kw, same as the californian emmisions tuned ecu's
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So if you get a jap bp ecu and put it on your aus bp, will that bring it up to 96kw? is it the only difference between the two?
btw i swear to god there is a difference between the bigport and smallport. If anyone has a standard bigport i rekon my standard smallport will beat it in a straight line, lets do some testing
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exactly arch
the ONLY DIFFERENCE between the aussie Bluetop and the JDM bluetop is the tuning in the ECU
swap ecu and use 98ron = 95Kw
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Location:
Adelaide
Registered:
January 2004
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Wed, 16 February 2005 09:26
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well thats a good upgrade for bluetop ppl... or is the jap ecu exy?
anyone got a bigport they wanna test angainst my smallport? so i can prove turbora28 wrong muhaha
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Location:
NSW, Sydney
Registered:
April 2004
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Wed, 16 February 2005 09:42
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i got a bigport motor using a JDM ECU, but haven't come across a small port using a stock ECU.
i also got my head and intake ported and polished if that makes any difference.
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Location:
Adelaide, drift capital
Registered:
May 2004
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Wed, 16 February 2005 09:54
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I reckon we should have a drag battle arch
My bigport 4AGE (jap rwd) makes about 70-75kw at the wheels. I dont think my bigport is anything special at all, but I enjoy it. I have an aftermarket ECU and no internal mods, only ricer mods (pod and zorst moite).
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Location:
Adelaide
Registered:
January 2004
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Wed, 16 February 2005 13:05
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hehe ur on
tonight i had a run with a s4 rx7 13bt, he had 3 car lengths on me by the top of third, lol.
damn turbos ahah
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Location:
qld
Registered:
December 2003
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Sun, 13 March 2005 07:30
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also the aussie big ports use a air flow meter, jdm uses map.
personally ive owned both stock both in a sprinter, the smallport had 4-2-1 extractors, big port was stock jdm rwd type.
only variable really was wheel size.. i now run a very small wheel diametre.. which is what i used with the small port.
the small port kills the big port in every way. i must admit it was a long time inbetween, and then my effective shorter final ratio would also make a differance, but im convinced the small port is a much better motor.
ill let you know how it compares to a black top in a week.. ish... i hope.. ANT PLEASE COME DO MY WIRING!
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Location:
Sydney
Registered:
December 2004
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Sun, 13 March 2005 13:49
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| slydar wrote on Sun, 13 March 2005 18:30 |
also the aussie big ports use a air flow meter, jdm uses map.
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No Aussie Delivered 4AGE's were ever AFM.
The american models and maybe the AW11 mr2's.
Im sure all redtop and blue top tvis were map
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Club Member
Location:
sydney
Registered:
May 2002
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Tue, 15 March 2005 04:57
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No Aussie Delivered 4AGE's were ever AFM
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i think youll find that the 4AGE in the aussie MR2's came out with some AFM's
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Toymods Vice President
Location:
Sydney
Registered:
May 2002
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Tue, 15 March 2005 08:22
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| IRA11Y wrote on Tue, 15 March 2005 15:57 |
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No Aussie Delivered 4AGE's were ever AFM
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i think youll find that the 4AGE in the aussie MR2's came out with some AFM's
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They sure did.
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Location:
wollongong NSW
Registered:
August 2003
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Re: AE86 (bigport 4age) vs. AE86 (smallport 4age)
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Tue, 22 March 2005 10:08
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| IRA11Y wrote on Tue, 15 March 2005 15:57 |
| Quote: |
No Aussie Delivered 4AGE's were ever AFM
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i think youll find that the 4AGE in the aussie MR2's came out with some AFM's
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| Quote: |
The american models and maybe the AW11 mr2's.
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