I just acquired an 1988 Corolla DX Sedan and I was wondering what the specs on the powerplant are (I think its 4A-F). Is it carb'd or EFI? Valvetrain, hp/tq. Thanks alot.
EFI on the 4A-F didn't come in till 90? Flashmn has a 90 carb'd 4a-f.. heh
So you have a 4A-FE.. Scissor type cams mean that you have DOHC but the intake cam runs off of the exhaust cam, the exhaust cam is on the distributor, the in. cam runs off of the ex. cam via a slave gear on the in. cam, I'll give you pics if you want.
uh, a 90 carb'ed 4a??? that's weird, they really changed it for the 90 models which actually came out in 89.5...... i've NEVER heard of a carb'd 90..... at least not here in the states
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1) 2004 IS300 Manual/LSD/Sportdesign 2) 2010 Corolla S 5 speed 3) 1986 MR2 "MK1.22" 5sfe/s54 swap 3) 1995 Ford Explorer 4x4, TT/AAL/custom shackle lift, 31"s
Originally posted by Punisher EFI on the 4A-F didn't come in till 90? Flashmn has a 90 carb'd 4a-f.. heh
So you have a 4A-FE.. Scissor type cams mean that you have DOHC but the intake cam runs off of the exhaust cam, the exhaust cam is on the distributor, the in. cam runs off of the ex. cam via a slave gear on the in. cam, I'll give you pics if you want.
Intresting. So its DOHC but not as good as having 2 independent cam gears? Pics would be great! thanks.
So its DOHC but not as good as having 2 independent cam gears?
Well depends on what you mean, I mean powerwise there isnt much difference if its DOHC/SOHC or if the cams are running together, all of them can be given a shitload of power with hte right setup, just the fact that its not as easy to independently adjust the cams, thats the problem (for alteast some of us).
strangely enough, unlike a twin cam motor, the set up the 4/7a-fe have (i believe it's actually toyota's F head design....) is that the gears actually run backwards of one another......
since one is pushing the other, they have to rotate in opposite directions... a twin cam with both cams on the timing belt will travel in the same direction
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1) 2004 IS300 Manual/LSD/Sportdesign 2) 2010 Corolla S 5 speed 3) 1986 MR2 "MK1.22" 5sfe/s54 swap 3) 1995 Ford Explorer 4x4, TT/AAL/custom shackle lift, 31"s
since one is pushing the other, they have to rotate in opposite directions... a twin cam with both cams on the timing belt will travel in the same direction
Umm no, thats a common misconception... as long as it has two camshafts (physically) it is a Twin Cam. period. It doesnt really make a difference how they spin, still does the same thing.
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