You have a 3rd gen tercel?
Those come with 3e's Gen 1 and 2 were A series.
Either way hope I could help.

For the flywheel you will need to have a machine shop drill holes and balance the flywheel.
For the pistons you would be better off looking for WISECO custom pistons.
3A-C is NON-Interference to a certain point.
look into how much is needed to resurface the head then determine whether or not you can swap a different piston.

You might be able to use another stock piston from another engine in the same a series family.
The piston bore for your 3ac is 81mm so i would look into the 4a pistons as they are the same bore size.
Your piston is dished so you might be able to get away with a flate piston or possible domed piston.
Also look into head gaskets I would recommend getting metal gaskets over the graphite made ones.
Thicker head gasket would open your options up a little more for high compression builds.

 

I know i could use the high compression pistons from the 4A, but dont the valve releafs in the piston top matter?

I also found out from about 4 hours of reserach that the 3A and the 3E use the same 107 tooth flywheel and that there are lightweight flywheels for the 3E. But, the cheapest lightweight flywheel I found is about $300. So, I thank Ill go with the cheaper mob and take the stock one in and have it lightend.

 

Valve angle and clearance is what I would be searching if I were you.

4age engines the valves are angled at prolly somewhere like 45 degrees.
Your valve angle might be at zero so it may work with no issues.
Its been done with single cam 3e on a 5e block before making ridiculous high compression 250 psi to the stock 180psi per cylinder.

How thick is the head gasket and what are some options you could throw at it?
3a

4age

4afe

looks like you have 4age head gasket options to go with.

 

How much of a compression incress could I expect if I took .030 of the deck and head and use a metal gasket?
Will I run in to problems with milling it that much while useing a cam with a lift duration of 300?

 

why a 3ac, how much power do you think youre going to get out of it?

 

+1. You could bolt up a 4E-FTE for a lot less cash than trying to get that 3A to make power.

 

no you cant actually, 4age bolts up

on top of that i owned a 2nd gen terc, theyre begging for a carb'd 4ag

 

Ah, so he has a 2nd gen terc then? My mistake. I thought he had a 3rd or newer, which are Es (I have a Paseo, and adapting the 4A to that means notching the frame, and other room-critical [big] mods -- though damn, I would love an extra 60-70 hp n/a, bet).

 

With all the mods Im doing on my 3AC, Im only looking at spending in the rang of $1000 US, and thats just to add an extra 100 HP to the stoke 80 - 90 HP.
The gen 2 Tercel was built so light that 180 - 200 HP will litterally fly. Every engine mod Iv done and am doing is 100% custom and most of them Iv done my self and resurched to find comatable parts.

For all thoughs that are looking to mod a 3A or 3AC, look at part from the 3E, 4A and maybe the 5A models. Almost all the internal are comatable, other then pistons but im still looking for a comatable one without bracking the bank.

 

wooooow slow down there buddy. a stock HEALTHY 3ac has about 52 horse, at 9.0:1 compression, if you pump up the compression, put on some carbs with a cam and some nice headers, ill be seriously impressed if you even hit 110 hp.... these engines arent very responsive to mods, a fuel injected 4ag with 272 cams and a shaved head only yeilded 125whp

with the 4ag pistons be careful, smallport 4ag pistons will give you the most comp, BUT the piston pin is 20mm, im not sure what the 3ac one is, earlier bigport 4ag's have 18mm pins, even that may be big, just because it fit in your bore dont mean itll work, as soon as you put 4ag pistons in,(providing they fit), it does become an interference engine

 

im not trying to deter you from your project, just bringing you down to reality,

 

You might be thinking of a differant 3A, I have the 86 3AC witch is a little larger then the older models with more HP. Ive done my resurch on this car and engine, have you?

With the mobs I have on the engine right now, witch are: port & polshed head, 2 inch exhaust from the manifold back, rejeted and tuned carb, and adjusted timming, it dinos at around 110 HP.

 

Anyways back on subject:
3ac if you want to high comp the 3a then your prolly just working with what you have I can respect that.
If you have a Toyota manual you should be able to look and see how much to shave off the head and block to meet your goals.
To anyone that doesn't agree it's his car so he will do as he wants with it anyways no sense in trying to convince him other wise.

There are ways to make any motor more powerful just need to research the engine and do some configurations.

 

Ok you're right, the figures I was reading were in kW... So it is putting out around 80ish hp

Your dyno that you mentioned, was it actually dynoed or is that what you "assume" it makes

 

if your gonna use the 3e/5e flywheel they weigh about 16 pounds and to make it lighter they would need to cut a shit load off the surface.
By the time it gets to the "lightened" desired weight your gonna be out of spec for use.
Those 300 dollar flywheels are made to be 9 pounds and to spec.
I would rethink the lightening of a stock flywheel.

 

The 3AC used in all Gen II Tercels put out 62 HP* and was 1452cc. No more, no less. Same size as the Gen I.
I have an '86 T4WD. I owned a then-new '83 in late '82.
We have techy members in our Club at

www.tercel4wd.com who would be VERY impressed with what you claim you've gotten with a 3AC...
Most put in a 4AC and go from there.
The 3AC is not a crossflow head and can only breathe so much - especially with the stock Aisan carb and OE combined manifold.
While our 6-speed transmissions are fragile, your 5 (or 4) speeds are not far behind.
* The 3-door bare-bones stripper car got 60 HP but not many of those were sold.
Tom M.

 

Well I was much closer in my first post on the actual power output of the 3rd, this is why the 110 hp claim seems a bit farfetched, and 180 seems unrealistic.

I know what a 4ag entails in a 91+paseo/tercel... I have one lol

 

A friend of mine has a 2002 Kia Rio that hes has moded and is still fine tuning. I bring this up because hes is doing the same thing I am and making his own modes. One of thoughs modes is a lighweight flywheel, I dont remember the stock weight but he sent it in and had 8 pounds milled out of it. What they did was not mill it out of the face but the body of the flywheel. I know taking out so much weight can creat a strangth problem but some times you what you have too.

 

I know taking out so much weight can creat a strangth problem but some times you what you have too.

Yeah.. I know this thread is a little over a month old.. but I had to respond to this..

Do you like having feet? Yknow.. to put shoes on .. and walk around on?

If you do.. hacking large amounts of weight off a flywheel isnt 'what you have too' .. its stupid. Especially when the car will be driven hard..

Go google around and try to find info on flywheels exploding.. the forces they are subject to are massive, especially at higher RPM.. and when they explode.. the shrapnel goes quite easily through bellhousings, floors.. and feet/legs..

Final comment - you claim "it dinos at around 110 HP" .. sorry mate.. but no. 110 at the wheels.. what.. 140, 150hp at the crank.. on a motor that came with 60-70 at the crank from the factory? with a bit of port work and an oversized exhaust?

I like oddball projects.. and this certainly qualifies.. post up some dyno sheets when you're done.. id love to see the results..

cheers,

Brett

 

tercel_freak, to help with figuring out problems in the future, you have 'GEN 3' on the title of this thread, and 'GEN 2' on your posts later on in the thread. That confused me, so be sure to label your threads and posts consistently. Thanks.

 

lol there are no dyno sheets, and if there are, it aint no mildly modded 3AC

First post FTW lol

 

lol, hey wonder..

yeah, ive gotta stay civil in the face of things like this at home.. but elsewhere I can speak my mind, heh..

Brett

 

Same buddy haha

yeah i had to step in on this thread too... lotsa dreamers