ok, sorry if this is a repost, but i searched for awhile about what to do an how to build up a 7AFE, but i got nothing. I remember that someone had or was selling one that i thought had more the 200 hp... so i was thinking , i wouyld be a hella lot easier then doing the whole 3s conversion, an i kinda like the non turbo an a fresh re-build, compared to an engine i know nothing about and a swap that i could end up getting screwed.. so im looking for any an all info on bulding up a n/a 7AFE. Thanks for anyhelp, an again sorry if its a re-post.

look here

old post

-Digndoug+Mar 30, 2004 - 5:26 AM

its kinda not fair how the GSR motor makes 180 horse with a 1.8L engine, and the celica only get 105 with the same displacement

-Hanyo+Mar 30, 2004 - 5:49 AM

Y did VVT-I have to come out so late for toyota!!!!!! >>

-Hanyo+Mar 30, 2004 - 5:57 AM

-Hanyo+Mar 29, 2004 - 10:57 PM

if you bought a celica expecting easy speed you should have opened the hood before you signed on the ... line >>

the 1.8L engine looks pretty good, if it was a 1.6 liter D16 honda engine i wont be expecting much..

You got to remember the 7afe has DOHC, not the SOHC.. so it should be pretty quick rite?

( i got to stop triping over the saying "there is no replacement for displacement")

but i bought the celica for it looks, not the speed.

VVT came out in 1992...

but vvti isn't ALL that new seeing how it was mercedes who played with variable timing back in like the 60's..... and also toyota had their variable intake system on some of the motors (t-vis).....

and also, the GSR is a pretty heavy little car..... also.... the GSR at that time really couldn't compete with the all-trac, the turbo mr2 (even the 5s-fe mr2 was a good match), the supra or the turbo supra.....

yes... 7a-fe is dohc, but it has a slave cam inside of it (so in a TWIN CAM motor, both cam gears run on the timing belt and run in the same direction... with the toyota FE heads, one gear is on the timing belt, and there's 2 internal gears... one cam drives the other so they rotate in opposite directions)

here's what a 7a-fe head looks like (this is an early model 4a-fe... but the heads are identical):


on the right you can see where the external single cam would bolt to the exhaust cam.... and the exhaust cam rotates the intake cam... on the left is where the distributor is... this picture is backwards from how it looks in your car....

Also to elaborate... VTEC isn't anything like VVTi... so it's still no comparison... VVTi makes for a better low-end response by slipping the cam during operation. VTEC is completely different. And VVT (first introduced in the 20V) is also different from VVTi (of course). VVTi came first in the blacktop 20V I believe... we're getting way off topic...

ok, thanks for the help, i will still keep looking into... but inst v-tec the same as vvti, vareiable valve timeing... but with inti?? ho well.. i was manly thinking if the gsr can run that stock, we should eb able to run that modded.

-Digndoug+Mar 30, 2004 - 3:56 PM

Go Turbo.. thats what iam working on right now >>