yakkmeister Posted January 24, 2009 Report Share Posted January 24, 2009 Since there is a good chance I can, down the line, acquire a 4A-FE powered AE92 for parts... I was wondering if the 4A-FE head (thus allowing injection) bolt onto a 4A-FC block? Has anyone done this and, if so, how did it go? I also have no idea about compression ratios or interference/non-interference status on these engines ... that could be problem... Anyway - let me know if anyone has done this or thinks it's possible. My theory is that it's a sound and good idea :) Quote Link to comment Share on other sites More sharing options...
KE30_KE35_KE55 Posted January 24, 2009 Report Share Posted January 24, 2009 Since there is a good chance I can, down the line, acquire a 4A-FE powered AE92 for parts...I was wondering if the 4A-FE head (thus allowing injection) bolt onto a 4A-FC block? Has anyone done this and, if so, how did it go? I also have no idea about compression ratios or interference/non-interference status on these engines ... that could be problem... Anyway - let me know if anyone has done this or thinks it's possible. My theory is that it's a sound and good idea :) I ran a 4AFE head on a 4AFC Block, The 2 heads are identical except for a fuel pump cut out and injectors in inlet ports. Quote Link to comment Share on other sites More sharing options...
towe001 Posted January 27, 2009 Report Share Posted January 27, 2009 I've also ran a big port 4ag head on a 4afc block for a while. The only differences - water pump, timing belt and pulleys, the manifolds and the flywheel... And from memory the A-series range is all non-interference heads (Except the 20v) And i was told that it wouldn't work cause of the 4af pistons would give the motor a "super" low compression. Still reckon the motor had the same power but better economy after i did it.... Quote Link to comment Share on other sites More sharing options...
MYSTIK[RL] Posted January 27, 2009 Report Share Posted January 27, 2009 (edited) whoops i made a boo boo :D Edited January 27, 2009 by MYSTIK Quote Link to comment Share on other sites More sharing options...
MYSTIK[RL] Posted January 27, 2009 Report Share Posted January 27, 2009 And from memory the A-series range is all non-interference heads (Except the 20v) no quite right is more like this "all A-series range in non-interference(including the 20v)" :D Quote Link to comment Share on other sites More sharing options...
KE30_KE35_KE55 Posted January 27, 2009 Report Share Posted January 27, 2009 I've also ran a big port 4ag head on a 4afc block for a while.The only differences - water pump, timing belt and pulleys, the manifolds and the flywheel... And from memory the A-series range is all non-interference heads (Except the 20v) And i was told that it wouldn't work cause of the 4af pistons would give the motor a "super" low compression. Still reckon the motor had the same power but better economy after i did it.... Correct excluding the 4A 4AC (as no valve cut outs on pistons) no quite right is more like this "all A-series range in non-interference(including the 20v)" :D Wrong quiet clearly 2 people in this post have ran other heads successfully. Quote Link to comment Share on other sites More sharing options...
Trev Posted January 27, 2009 Report Share Posted January 27, 2009 Correctexcluding the 4A 4AC (as no valve cut outs on pistons) Wrong quiet clearly 2 people in this post have ran other heads successfully. The 4a - 4ac are not interference either. Quote Link to comment Share on other sites More sharing options...
beerhead Posted January 28, 2009 Report Share Posted January 28, 2009 Don't forget very low boost friendly compression when you put a GE head on an FE bottom end. I've also ran a big port 4ag head on a 4afc block for a while.The only differences - water pump, timing belt and pulleys, the manifolds and the flywheel... Quote Link to comment Share on other sites More sharing options...
yakkmeister Posted January 29, 2009 Author Report Share Posted January 29, 2009 Wow - so pretty much any 4A head will work. Sweet :jamie: Quote Link to comment Share on other sites More sharing options...
towe001 Posted January 29, 2009 Report Share Posted January 29, 2009 Yes and no. Like you'd be wasting your time in fitting a 20v head to the 4a-f block. Where as the big port head wouldn't be so much of a waste of time. All in all you'll be dealing with a crank that can only use a 6 bolt flywheel instead of an 8 bolt flywheel. Unless you swap in a 4ag crank, but then its a case of why bother..... Quote Link to comment Share on other sites More sharing options...
yakkmeister Posted February 4, 2009 Author Report Share Posted February 4, 2009 Yes and no. Like you'd be wasting your time in fitting a 20v head to the 4a-f block. Where as the big port head wouldn't be so much of a waste of time. All in all you'll be dealing with a crank that can only use a 6 bolt flywheel instead of an 8 bolt flywheel. Unless you swap in a 4ag crank, but then its a case of why bother..... Indeed! The main idea here was to ascertain the possibility of running a 4AFE head on a 4AFE block - which seems to be the case. I think using 4AGE heads would be a tad silly regardless though... don't they run a chain drive on those? (be stuffed if I can remember ...) Quote Link to comment Share on other sites More sharing options...
Hiro Protagonist Posted February 4, 2009 Report Share Posted February 4, 2009 I think using 4AGE heads would be a tad silly regardless though... don't they run a chain drive on those? (be stuffed if I can remember ...) No, all A-series engines are belt..... Quote Link to comment Share on other sites More sharing options...
towe001 Posted February 5, 2009 Report Share Posted February 5, 2009 hehe You could be thinking of the t-series, r-series twincams Quote Link to comment Share on other sites More sharing options...
hitoriko Posted March 27, 2009 Report Share Posted March 27, 2009 actually the ae86 ADM 4ac engines have 6 bolt flywheels soremoving the carb engine and droping in a 4af/age hybrid would bolt in prefectly leaving you with all the std gear but then again why bother Quote Link to comment Share on other sites More sharing options...
kdrakon Posted June 15, 2009 Report Share Posted June 15, 2009 (edited) I ran a 4AFE head on a 4AFC Block, The 2 heads are identical except for a fuel pump cut out and injectors in inlet ports. What did you have to do about the fuel pump cut out and injector inlet ports? I would like to keep the carby on the 4A-FC, so would the injector ports cause a problem? Edited June 15, 2009 by kdrakon Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.