Can i see some ae92 sr5 engines? - Toyota Nation Forum : Toyota Car and Truck Forums

AE92_GTS88 · 10-08-2006, 11:22 PM

Can I see the ae92 sr5's engine bay? Im confused on the 4af engine, is it sohc or dohc on the ae92 sr5?

thanks any info is kindly appreciated

(i know im a noob

)

sportrally88 · 10-08-2006, 11:40 PM

its dohc the 4ac was the last sohc

emiliorescigno · 10-09-2006, 01:00 AM

1991 Corolla Base Sedan

1991 Corolla SR5

If you notice differences, the Base Sedan lacked the Power Steering & Cruise control the SR5 had.

4A-FE Powah!!

toyotaspeed90 · 10-09-2006, 05:27 PM

they are a dual overhead cam... but not a twin cam....

the toyota F heads are designed with fuel economy in mind.... which is why they have a narrower head (and why some think it's a sohc)... there ARE 2 cams in there.... however, one cam is driven off the other (and because of that, run in opposite directions... unlike a twincam motor... which will have both cams running off the timing belt and in the same direction).... the narrowing of the cams & head allows for a different air velocity flow to the head....

Flashmn · 10-09-2006, 05:45 PM

old pic but

As for it not being a twin cam, well... hmm thats debatable, twin meaning two, as for them running opposite directions, doesnt really matter performance wise. Heck theres SOHC engines with more power from the factory than the 4A-F :P

punter · 10-09-2006, 06:04 PM

To me twincam means 2 cams, one for exhaust and one for intake.
How they are driven makes no difference.
If they were chain driven would you call it twincam??

freakinbox · 10-09-2006, 06:13 PM

It's a DOHC and it's a twin cam. as they said twin means 2. Doesn't say anything on how they are drivin.

does it really matter what direction they run in? the lobes are the same shape on both sides, no?

The only SOHC 4a engine was the 4ac.

AE92_GTS88 · 10-10-2006, 12:15 AM

thats col cause I thought it was like the 4AC engine.

TwinCamGuy · 10-10-2006, 03:01 AM

Here's my 88 SR5

freakinbox · 10-10-2006, 06:08 AM

yea but thats not the stock engine lol. 4agze

retiredat44 · 10-10-2006, 01:58 PM

Here's a link, for a limited time to pics of my 1989 Toyota Corolla SR5.

http://virtualairforce.byethost11.co...yota/ulthm.htm

I took these pictures before I did a carb rebuild.. a few months back

***REN69*** · 10-10-2006, 05:23 PM

Don't make me get into this discussion again you fools!!

DOHC was two cams that basically drive off each other

Twin Cam was two cams that ran SEPARATE from each other by a belt, chain, hamster wheel, whatever! but SEPARATE, not parasiting off each other like DOHC.

Find a pic of an open 4AGE and an open 4AFE and you'll see the diff.

punter · 10-10-2006, 05:46 PM

Going to have to disagree with you ren, both terms mean the same thing.

My mates car (ae92 4af) says twincam multi valve on the back, and my old car (mazda gtx) said DOHC turbo on the side it was the same setup as a 4age.

freakinbox · 10-10-2006, 06:04 PM

yea DOHC just means dual over head cam, any engine with 2 cams at the top.
Twin cam just sounds sportier... than saying Dual overhead cam

Infinitrium · 10-10-2006, 07:52 PM

Quote:

Originally Posted by REN69

Don't make me get into this discussion again you fools!!

DOHC was two cams that basically drive off each other

Twin Cam was two cams that ran SEPARATE from each other by a belt, chain, hamster wheel, whatever! but SEPARATE, not parasiting off each other like DOHC.

Find a pic of an open 4AGE and an open 4AFE and you'll see the diff.

No, please do. How much of a difference would it make, I mean the engine is still turning 2 camshafts, whether they're both driven by a belt, or in the FE's case, one by belt and the 2nd by gear.