| Author | Topic |
|---|
Location:
Melbourne
Registered:
May 2002
|
|
How much boost? (4A-GZE)
|
Tue, 17 September 2002 03:28
|
 |
How much boost can a stock 4A-GZE (MAP sensor type) make with the stock computer?
How much with a programmable ECU? (from someones experience)
Just say i wanted a max of 15psi out of the stock engine, will it be able to hold up with the stock pistons and other internals reliably?
One more question....what is the best turbo (from another car such as a Supra) to suit the 4A-GZE?
Thanks, any help much appreciated.
|
|
|
Location:
Canberra, ACT
Registered:
May 2002
|
|
Re: How much boost? (4A-GZE)
|
Tue, 17 September 2002 09:29
|
|
uhh 14psi with stock comp rings a bell
As much as you want
Yes it would run, probably fairly reliably, they are pretty tough.
No idea on the turbo sorry
-Andrew
|
|
|
Location:
Victoria
Registered:
September 2002
|
|
Re: How much boost? (4A-GZE)
|
Wed, 18 September 2002 01:32
|
|
Depends on what you want out of your car.
You could get a turbo and manifolds from the 4A-GTE.
|
|
|
Location:
Brisbane
Registered:
May 2002
|
|
Re: How much boost? (4A-GZE)
|
Wed, 18 September 2002 02:31
|
|
No you couldn't, because the 4A-GTE doesn't exist.
|
|
|
Location:
Victoria
Registered:
September 2002
|
|
Re: How much boost? (4A-GZE)
|
Wed, 18 September 2002 03:14
|
|
Sorry I must've been mistaken, isn't my face red. 
You're right. Toyota never built a 4A-GTE
I saw this picture at the top of the screen and didn't even think about it.
|
|
|
Location:
Colyton, NSW
Registered:
May 2002
|
|
|
Location:
Melbourne
Registered:
May 2002
|
 Re: How much boost? (4A-GZE)
|
Wed, 18 September 2002 09:07
|
|
Thanks for the feedback guys.
Ok, so 14psi.....but basically i wanna make a 4A-GTE, so that's why i asked what turbo suits the 4A-GZE, so i can get more boost.
That's also why i asked how much the stock internals can handle...so to see whether getting a turbo for it is worth the effort.
So that 14psi is what i can make with stock computer and only minor changes to supercharger and frount mount....but i wanna know how much i can squeeze out with programmable ECU, and turbo added on?
Any help?
|
|
|
Location:
Adelaide
Registered:
July 2002
|
|
Re: How much boost? (4A-GZE)
|
Wed, 18 September 2002 17:36
|
|
|
if the stock internals can only handle 14psi. and the S/C can pump in that much why would u wanna swap the S/C for a turbo?? there would be no point would there?
|
|
|
Location:
Adelaide
Registered:
May 2002
|
|
Re: How much boost? (4A-GZE)
|
Wed, 18 September 2002 17:53
|
|
|
turbo chargers are more efficient so thats means more power at the same boost level.
|
|
|
Location:
Adelaide
Registered:
July 2002
|
|
Re: How much boost? (4A-GZE)
|
Wed, 18 September 2002 17:59
|
|
Yeh i know but would the power gain difference be that significant at 14psi?
Just sounds like a lot of money/work involved to gain a few extra horsies
I could be completely wrong tho i dont know too much about forced induction.
|
|
|
Location:
Adelaide
Registered:
May 2002
|
|
Re: How much boost? (4A-GZE)
|
Wed, 18 September 2002 18:30
|
|
|
my guess depending on the turbo (eg. t28/3) probably with a decent decent intercooler maybe as much as 50kws
|
|
|
Registered:
June 2002
|
|
Re: How much boost? (4A-GZE)
|
Wed, 18 September 2002 20:30
|
|
You can't just say I want to run a turbo @ 14psi and it will be ok. You need to know what turbo your going to be using.
You could have a T2 running 14psi or a T88 running 14psi both with completely different results, not only in how they deliver that 14psi the the amount of air they flow @14psi (I think a T88 is around +1000cfm vs T2 around 200cfm), this inturn will determine weather a stock 4A-GZE internal are up to it.
|
|
|
Location:
Colyton, NSW
Registered:
May 2002
|
|
Re: How much boost? (4A-GZE)
|
Wed, 18 September 2002 21:09
|
|
| Hunty wrote on Thu, 19 September 2002 03:36 |
if the stock internals can only handle 14psi...
|
nobody ever said stock internals can only handle up to 14psi...
the stock computer will handle UPTO 14psi...
dont ask me how much u could throw in there... or max boost.. that i dont know..
|
|
|
Location:
Carlingford, Sydney
Registered:
May 2002
|
|
Re: How much boost? (4A-GZE)
|
Wed, 18 September 2002 21:52
|
|
at the last dyno day there was a turbo 4AGZE MR2 that made 205kw at the wheels with as far as i know standard internals
i think he was running 20psi? (not 100% on that) with a gt30 turbo
|
|
|
Location:
Melbourne
Registered:
May 2002
|
|
Re: How much boost? (4A-GZE)
|
Thu, 19 September 2002 07:06
|
|
Hmmm....205kw at the wheels with standard internals...sounds a bit excessive....i think the max. power you can get with a 4A-GZE with stock internals is around 150kw at the wheels....but u could b right.
ok, there's a turbo i can buy from a mate, but i'm not sure what type/size of turbo it is. All i know is that it is a Garret turbo, with the compressor wheel looking like the size of a T28, but the shell of the turbo about 17cm in diameter. It also has the serial no. M53 on it. According to him it has never been used, and he said he'll sell it to me for $500.
Does anyone know what type/size the turbo may be, and is it a good price?
Once i figure out what type of turbo it is, i will be able to calculate whether it will suit the 4A-GZE.
|
|
|
Toymods Board Member
I supported Toymods
Location:
Turramurra, Sydney.
Registered:
May 2002
|
|
Re: How much boost? (4A-GZE)
|
Thu, 19 September 2002 10:02
|
|
Don't worry, he's right!
And half of toymods was there to see it too.....
It was a really nice setup, with custom intake manifold, nice big water-to-air 'cooler, nice turbo manifold & a very efficient turbo. I can't remember what computer it was using, but it was making this power on a standard bottom end.
I've heard of quite a few ZEs running up to 20 pounds of boost, prolly not all the time, but they do handle it, if you have a good setup & tune. Hell, yogis pumped shitloads of boost through ZEs, he'd be the man to tell us how much boost they can put up with.
|
|
|
|
|
Re: How much boost? (4A-GZE)
|
Thu, 19 September 2002 10:25
|
|
A mates hillclimb car used to make close to 400 rwhp out of a stock pistons and bottom end 4agze.
It had a very large vortech supercharger, NO INTERCOOLER, @25 psi and methanol fuel.
Stock head gasket !!!!!
the thing weighed 500 kg wet with driver !!
U can imagine what it went like.
Matt
|
|
|
Banned by his request
Location:
moved to tamworth
Registered:
July 2002
|
|
Re: How much boost? (4A-GZE)
|
Fri, 20 September 2002 12:41
|
|
ladys you are all missing the point. all thing to do with cars and engines are a compremise. you can get 400hp out of one but its not going to last 100k km . i have one that i have been collecting parts for, for 3+ years. it is o-ringed shot peened balanced with Arp rod bolts and head studs. wont tell you the rest but it cost alot of money and if i dont get over 400hp out of it ill give it away as i will be running 30psi+ and this is the main point , from time to time. if i ran it at 30psi all the time the engine would wear out in 15k km more or less. its all a give and take. and if i drove it around the race track at 30psi it would be lucky to make 500km. see the point? the more power the less km you are going to get. has always been this way with engines. haha the 308 we stroked to 355 for dyno comps makes 708hp at the wheels but in 10k it has done two head gaskets and 5 sets of tyres. coast $140k in parts alone to build but we are amazed the crank has not snapped yet! its done 10k km plus 38 dyno runs.
mick
|
|
|
Location:
Geelong.Vic.Au
Registered:
August 2002
|
|
Re: How much boost? (4A-GZE)
|
Sat, 21 September 2002 00:47
|
|
There is a Datto ute in one of my old Fast 4's with a 4agte (previously 4agze) making 186kw, this is with the standard internals,
Article reads:
"Remarkably it's this fast on papaer and not with a full-house big-capacity engine, but with an internally standard 1.6-litre. Yep, a stocko factory supercharged Toyota 4A-GZE engine with a few little tuning tricks. Like removing the stock factory supercharger and replacing it with an S14 200SX T25 ball-bearing turbocharger on a custom made exaust manifold, like the air-to-air intercooler from a Galant VR4, like the boost increase maxing out at 28psi and like the EMS fuel and ignition computer."
|
|
|
Location:
Adelaide
Registered:
September 2002
|
|
Re: How much boost? (4A-GZE)
|
Tue, 24 September 2002 22:38
|
|
Hi,
You gotta remember a 4agze comes with forged pistons!!!!!!
I know of a place in Adelaide which sells a t25 turbo and manifold for $1500?
That should run around 14psi and make about 130-140 at the rear wheels.
Personally, I'd fit a new t28 rollar bearing turbo, you could run 16psi and make over 180 at the rear wheels.
I'd think you'd need an after market computer also tho...
it would be worth it... but the only diff between supercharged n turbo is LAG!..
I know nevo pulley kits cost hardly anything and make about 110 at the rear wheels running 14psi... and by like 2000rpm u have 8psi going through the supercharger...
I know one guy who is doing mid 13's with this set up, also has an intercooler and water pump or something..
Evereyone says to turbocharge is better tho..
anyway
Ciao
|
|
|
Location:
Montrose, VIC
Registered:
May 2002
|
|
Re: How much boost? (4A-GZE)
|
Wed, 25 September 2002 10:11
|
|
I've actually been bitten by this in the last few days  but hey...
I live in Melbourne, was going to Adelaide on sunday, about 200km from adelaide my 4ag turbo got a case of 'vented block disease' (a rod through the block). It was using an RB25DET turbo, fabricated cooler, etc. However, I'd almost certain this was due to a lack of fuel rather than a physical limit of the engine itself. I never heard any detonation, POSSIBLY due to the fact it was running on LPG. I'll let you know when I pull the engine apart as to the reason it died. However, I can say that the RB25 turbo is a great thing on this engine, giving acceptable response and reasonable higher RPM grunt. Not perfect, but for a $200 turbo that was in good order, who could argue!
Only thing I can say is TUNE IT VERY VERY CAREFULLY! No matter how many times I've said this to other people, I now look like the biggest fool of all for killing my engine that way. At least a replacement engine was easy to find and didn't break the bank 
|
|
|
Location:
Wollongong
Registered:
June 2002
|
|
Re: How much boost? (4A-GZE)
|
Wed, 25 September 2002 13:25
|
|
|
You guys mentioned an MR2 4AGZE with a water to air intercooler setup - is there any more info about this car available? I'm interested in the intercooler setup and wouldn't mind picking the owners brain about it.
|
|
|
I supported Toymods
Location:
south of the big smoke
Registered:
May 2002
|
|
|
