have a question about engines

[xx.jason.xx]

first off, I have a friend with an 88 camry, and he wants to make the car faster, a lot faster.
from the research that I have done, he has a 3s-fe engine in the car. My friend has little knowledge of cars and came to me for help, but I am lacking on knowledge of toyota engines, and therefore will ask questions here, hopefully finding out what I want to know.

1. Is it possible to put a 3s-gte head on a 3s-fe block? if so, what, if any, benefit would come from it?

2. Is it possible to stroke out the 3s-fe block to maybe 2.2 or 2.4L? if so, what crank, rods, and pistons would be necessary? would there be any major benefit or would it be better to leave it at 2.0?

The reason I ask these questions is we are planning on turbocharging the car and want a good base with as much power and torque to begin with. I am planning on building the engine out of the car and dropping it in later.

Any other information that anyone feels is pertinent would also be very much appreciated.

[Phatfantom68]

If you want to make the camry a lot faster, the only possible option is a 3sgte swap. If you want more info on the swap, search, as there are many threads about it.

Second, with camry's, it is money talks, shit walks, so if you're not planning to lay down 2-3 times the value of the car for the 3sgte swap, then just buy a faster car.

Also, running a turbo on a 3sfe is a not a good idea.

[88 LE]

Originally Posted by xx.jason.xx

1. Is it possible to put a 3s-gte head on a 3s-fe block? if so, what, if any, benefit would come from it?

Possible, yes. Worth it, no.

If you wanted to go that route, I'd swap in a 3S-GTE and forget about the frankensteined head swap.

2. Is it possible to stroke out the 3s-fe block to maybe 2.2 or 2.4L? if so, what crank, rods, and pistons would be necessary? would there be any major benefit or would it be better to leave it at 2.0?

You can stroke a 3S to 2.2L by using a crank from a 5S.

5S crank has bigger rod journals, so you need different rods (ones made for a 5S) or have the crank machined and use rods made for a 3S.

Not sure about the pistons.

[88camrykid]

well he could bore out the engine to 2.2 and get that egine kit from wiesco i think im not quite sure

[marc780]

Well you are hopping up an old engine in an old car. Alotta people cant really buy new, me included. But the bottom line is the same as the old sign in the speed shops of the 1960's, "speed costs money. How fast do you want to go?"

I dont wanna be a killjoy but heres my two cents...I would not dream of turboing that engine, even if it were brand new. The combustion chamber pressure increase is hell on the pistons, valves and crank and easy to blow it up, then what? Engines designed for turbocharging have special mods like forged pistons and 4 bolt main cranks, and even they are usually on the razor edge of durability.

I'd just help the breathing with some headers if theyre legal there, and maybe do a high-perfomance valve job with bigger valves and hotter cam, that is if you dont care how rough it idles. Actually a good rebuild with engine balancing will add a fair amount of horsepower, probably at least 10 or 20 hp, and safely too.

[88 LE]

Originally Posted by 88camrykid

well he could bore out the engine to 2.2 and get that egine kit from wiesco i think im not quite sure

Not quite.

The increased displacement from a 5S vs. 3S is due mainly to the crank.

Stroke on 5S = 3.58"

Stroke on 3S = 3.39"

Bore on 5S is 1mm/.040" larger then a 3S. 87mm (3.43") vs. 86mm (3.39").


If you read below, you can see that increasing the bore on a 3S by .040", only gains .05L of displacement. Whereas just increasing the stroke to 3.58" (5S crank) gains .11L (2.11L vs. 2.0L).






From one of my old posts:

http://toyotanation.com/forum/showpo...73&postcount=5


^ Boring won't gain you a whole lot more displacement though.


Formula for cid (cubic inch displacement):

CID = N x 0.7854 x bore x bore x stroke (all in inches)

N = number of cylinders
bore = 3.39" (stock bore size on 3S block)
stroke = 3.39" (stock stroke on 3S block)

122.39 cid / 2.0L (Stock)
123.84 cid / 2.029L (bored 20 over (.020))
125.29 cid / 2.05L (bored 40 over (.040))


Now if you increase the stroke with a 5S crank (3.58") you get this:

129.25 cid / 2.11L

So you can see that increasing the stroke has a bigger effect on the displacement then boring.


http://www.edelbrock.com/automotive/index.html

http://www.thedirtforum.com/litercalc.htm




This concludes todays lesson about bore & stroke. Any questions, see professor 88 LE.