hybrid idea - Toyota Nation Forum : Toyota Car and Truck Forums

celica/camry · 02-03-2003, 09:08 PM

could you take a 4age big port head and fit it onto a 7a block....or can you fit a 4age 20v silver on a 7a fe block..

clouse · 02-03-2003, 10:04 PM

i think you can? i heard someone say you can. but i don't know from experience or anything.

toymaniac · 02-03-2003, 10:49 PM

RollaPat is doing a 7agze.... 4agze pistons and head on 7afe block.....

http://www.toyotanation.com/viewtopic.php?t=12457

and he and our friend pascal already did a 7age...

goodcookiedrift · 02-04-2003, 05:05 PM

pat was also brewing of some crazy ideas at jewish lunch when he was in town.....wtf.

nick

DerekDorifto · 02-04-2003, 08:02 PM

Hey Nick,
There's no way that the food we ate was kosher! It was even worse in the summertime when we went to eat at Jack Astor's patio in Mississauga.

Rolla Pat · 02-04-2003, 11:10 PM

Is Data jewish?!?

Sure makes a good damn fajita platter!

Beam me up some more guacomole...

Derek told that girl at Jack Astor's how hot her buns were.

<------ Only his upper lip is moving? Who laughs like this ??!?!?!

celica/camry · 02-05-2003, 07:06 PM

ok while i was BOMA board off my ass..in class to day this idea came across my mind again....
7a block (i have a short block w/o head everthing else there)
4age head...is big port better than small? and what year cars are the big ports found on?
intake cam 256 dura and stock exaust..how wide would that torque ban be?
3 angle valve job (maybe)
is it safe to say that the engine would have at least 160hp also considering intake and full exaust system
7afe 114-to 116 hp 115lbs torque
4age 120 hp torque?
when made just a 7age with only stock cams and exaust estimated at 130 hp (same as stock 5sfe engine but lighter and maybe more efficiant)

btw whats the max hp and torque of that 7agze????

***REN69*** · 02-05-2003, 09:57 PM

dont know much about celis.. but wouldn't a 3SGTE be a better option.. of course if it can be put in your celi. :-?

goodcookiedrift · 02-05-2003, 10:42 PM

i assume this is for a ae86 or ae92.

in any case, the 7a block that pat is using has been fully rebuilt with new oem rods, pistons, rings, bearings, etc.

you'd be running a severe risk by using USED internals on a boosted application. you also need to consider that your flywheel will need modification.

both the big port and small port head are good for DIFFERENT power bands and applications. I would think that a small port would be the greatest for boost due to the amount of overlap the small ports would cause. contrastingly, small ports are ideal for streetable yet potent NA applications. THe big port on the other hand, is probably the best for crazy NA setups (like my now defunt 304 in/ex, oversized valved, high comp carbed setup). And of course a gze head would simply be the best for boosted applications.

derek and pat: oh yeah...how are your payless shoes holding up? those cheap peices of sh!t still holding downt he fort?

Nick

Rolla Pat · 02-06-2003, 09:17 AM

Damn!!!!

We've been outed!

I AN NOT AN ANIMAL!!!!!!

Rolla Pat · 02-06-2003, 09:30 AM

Here's a dyno from Finland on a 7a-ge with small port head in a AE86. The 7a-ge is bone stock.

These are extremely close to the numbers we were projecting for our 7a-ge project back then. 93.1 kw @ 6380 rpm translates to 125 hp at the wheels. Add in the 14% driveline loss on RWD and you get a 143 hp at the crank. As for torque, 160.7 @ 4930 translates to 120 lbs of torque, plus the drive line loss which equals to 137 lbs of torque at the crank.

So 143hp and 137 lbs of torque. All this on stock components.

Our 7a-ge project had a ported head and 10.5:1 compression. Our estimate of 150hp is almost dead-on. So with some 264 or 272 cams, 160 hp would be a VERY possible item.

As for my 7a-gze project with the added SC14, we're expecting 200+ wheel HP and torque.

Pat

celica/camry · 02-06-2003, 10:47 PM

well yeah a 3sgte swap will work but.....
cost more for swap and for everything for swap
7a bolts up to stock tranny
7a would be more practical for me than a 3sgte
7a weighs less than 3sgte (i know the 200-260 hp stock makes up for it)
7a built up will have more power than a 5sfe and as much power as a newer 3sge and older 3sgte)
7age or gze swap into a celica is rare

if u rebuild the 7a block and the 4a head i think it would still be cheaper than the 3sgte swap (btw that block i have i had the bore checked out...it was fine and i gave the pistons a ring job...whole engine only had 33k when i pulled it out of a corolla but the rear end was smashed to hell and the head was already off the car ...why i dunno? block only cost me 150 so i was happy)

but yeah when i get my hands on the ge head then i will rebuild it and comp test it before i use it
so let me get this strait....
small port better for turbo or just n/a up to 200 hp
big port better for high #'s of hp
gze head best for turbo

goodcookiedrift · 02-07-2003, 10:10 PM

actually i don't think the small port is that great for force fed apps. but i could be wrong.

put it this way,

big port good for high strung hp...

small port good for mid range torque on an NA

gze, best for gobs of mid range torque on force fed apps.

take those with a grain of salt, as i'm speaking in generalities.

nick

DerekDorifto · 02-08-2003, 12:15 AM

My Payless shoes are doing awesome, I finally broke in the laces this week and they actually don't make my fingers bleed each time I tie them anymore. I used to just leave them unlaced...

celica/camry · 02-08-2003, 09:28 PM

well im probally going to start building a 7age project over the summer....i may go with the small port head and add sum cams and sum other goodies and have a nice strong n/a motor for now hopefully reach that 160hp and around the same or more amout of tourqe. get a stage 1 or 2 clutch and keep the stock tranny (it was rebuilt @180k car now has 204k on it)

now the other thing i was wondering would u use the comp from the 4age (from the storm gsi..or corolla gts...mr 2 n/a or would any of those work?)